null  User manual
ICE WESTERN SALES LTD.
9732-52nd St. S.E.
Calgary, AB T2C 2R5
Ph: 1-403-252-5577
Fax: 1-403-252-5556
Installation and User Manual
AH SERIES PACKAGED UNITS
- DX or Chilled Water Cooling
- Gas, Electric, Steam or Hot Water Heat
Models AH-020 to AH-700
5 to 180 Tons
Refrigerant: R-410A, R-407C, R-22, R-134a
NOTE: Prestart-up: Compressors with oil heaters require minimum time or
temperature before starting. ( ie: min 8 hrs, min 120 ºF )
Contents
Contents
1. Description……………………………………………………………………………….….. 3
Hazard Identification Information
Safety Considerations
Unit Description
Refrigeration Piping
2. Model Number Description………………………………………………………………….. 8
Unit Model Number
3. User’s Information……………………………………………………………………………. 9
DX Package Units
Hydronic Cooling & Heating
Gas or Electric Heating
Multiple Unit Operation
Condensate Piping
Normal Thermostat Operation
Night and Vacancy Operation
Gas Heating System
Hot Gas Bypass System
Filter Sizes
Cabinet Construction
4. Delivery……………………………………………………………………………………….. 14
Receipt & Inspection
Storage
5. Installation…………………………………………………………………………………….. 15
General
Handling
Heating and Cooling Systems
Service Clearances
Setting the Unit
Electrical
Standard Control Board
Optional Control Board
Thermostat
Economizer Option
Lockout Modes
Condensate Piping
6. Start-Up……………………………………………………………………………………….. 26
General
Procedures
Air Balancing
Controls
Unit Start-up Checklist
7. Operation & Maintenance………………………………………………………………….. 36
General
Planned Maintenance
Cooling
Condenser Fan
Blower Assembly
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Contents
Gas Furnace
Chilled Water
Filters
Cleaning
Service
8. Pressure-Temperature Chart ……………………………………………………….……. 40
APPENDICES
Solenoid Valves 200RB/500RB Model
Solenoid Valves 240RA/540RA Model
EK, ADK & BOK Filter Drier Installation Instructions
HMI Moisture Liquid Indicator
PS1 Single High and Low Pressure & PS2 Dual Pressure Refrigeration Controls
P70, P72, P170 Series Controls for High Pressure Applications
B Series Balanced-Port Thermal Expansion Valves Installation & Service Instructions
TRAE+ Balanced Port Thermal Expansion Valve Cage
TX6 Thermo Expansion Valves Technical Data
ASC, ASC2, AM, AH, DM, EB, EM, MM, RM Coils Instruction Sheet
EX4 / EX5 / EX6 / EX7 / EX8 Electrical Control Valves Technical Data
EC3-D7x Digital Superheat Controller with EC3-D72 TCP/IP Communication Instructions
System 350 A350P Electronic Proportional Plus Integral Temperature Control
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Description
1. Description
Hazard Identification Information
WARNING
Warnings indicate potentially hazardous situations,
which can result in property damage, severe personal
injury, or death if not avoided.
CAUTION
Cautions indicate potentially hazardous situations,
which result in personal injury or equipment damage
if not avoided.
WARNING
Safety Considerations
Installation and servicing of air-conditioning equipment can be hazardous due to system
pressure and electrical components. Only trained and qualified service personnel should install,
repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of cleaning coils and filters and
replacing filters. All other operations should be performed by trained service personnel. When
working on air-conditioning equipment, observe precautions in the literature, tags and labels
attached to the unit, and other safety precautions that may apply.
Follow all safety codes, including UL 1995 (Issued: 2005/02/18 Ed:3 UL Standard for Safety
Heating and Cooling Equipment - ) and CSA C22.2#236 (Issued: 2005/02/01 Ed:3 UL Standard
for Safety Heating and Cooling Equipment - ). Wear safety glasses and work gloves. Use
quenching cloth for unbrazing operations. Have fire extinguisher available for all brazing
operations.
WARNING
Before performing service or maintenance
operations on unit, turn off main power switch to unit.
Electrical shock could cause personal injury.
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Description
WARNING
What to do if you smell gas:
1. DO NOT try to light any appliance.
2. DO NOT touch any electrical switch, or use any phone in your building.
3. IMMEDIATELY call your gas supplier from a neighbor’s phone. Follow
the gas supplier’s instructions.
4. If you cannot reach your gas supplier, call the fire department.
5. DO NOT try to light any appliance.
WARNING
DO NOT store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
WARNING
Improper installation, adjustment, alteration, service,
or maintenance can cause injury or property damage.
Refer to installation instructions provided with the
unit, and this manual. For assistance or additional
information, consult a qualified installer, service
agency, or the gas supplier.
Unit Description
Figure 1 & 2 shows typical packaged DX cooling unit with the locations of the major
components. These figures are for general information only. See the project’s certified submittals
for actual specific dimensions and locations.
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Description
Figure 1: Typical Component Locations
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Description
Figure 2: Typical Component Locations
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Description
Refrigeration Piping
This Section presents the unit refrigeration piping diagrams (single circuit,
dual stage w/ Hot Gas Bypass System ).
Figure 3: Circuit Schematic
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Model Number Description
2. Model Number Description
Unit Model Number
Model
Nom. Casing
AH -
Voltage
a1
a2
a3
Discharge
Location
b
Cooling
Heating
c
d1
d2
d3
d4
Heat
Humidification
Recovery
e1
e2
f1
f2
g1
g2
a1a2a3: Norminal Casing ( 20=2000CFM, 60=6000CFM, 80=8000CFM, 120=12000CFM, 150=15000CFM,
180=18000CFM, 210=21000CFM, 240=24000CFM, 320=32000CFM, 400=40000CFM, 480=48000CFM, 600=60000CFM,
700=70000CFM )
b: Voltage
A = 575~600V/3Ø/60HZ, B = 460~480V/3Ø/60HZ, C = 208~230V/3Ø/60HZ, D = 208~230V/1Ø/60HZ, E=120V/1Ø/60HZ
c: Discharge
T = Top, S = Side, E =End, B =Bottom, AC=Vertical
d1: Refrigerant Type
A = R410A, B = R407C, C = R-22, D = R-134a
d2: Configuration
E = Air Cooled Cond. w/ std. DX Coil
F = Cooling Water Coil
DX = DX Coil
d3: Staging
Circuit & Stage
11 = Single Circuit Single Stage
12 = Single Circuit Dual Stage
13 = Single Circuit 3 Stage
14 = Single Circuit 4 Stage
22 = Dual Circuit 2 Stage
24 = Dual Circuit 4 Stage
26 = Dual Circuit 6 Stage
28 = Dual Circuit 8 Stage
36 = Three Circuit 6 Stage
44 = Four Circuit 4 Stage
48 = Four Circuit 8 Stage
d4: Nominal Tonnage Range of 3 Ton – 180 Ton
e1: Type
GIDM = Indirect Gas Heat ( 4 - Pass Drum & Tube Heat Exchanger )
GIDMH = Indirect Gas Heat ( 4 - Pass Drum & Tube Heat Exchanger ), w/High CFM.
BMA = Direct Gas Heat
BMAE = Electric Heating Unit
DIDM = Indirect Gas Heat ( 4 - Pass Drum & Tube Heat Exchanger )
DIDMH = Indirect Gas Heat ( 4 - Pass Drum & Tube Heat Exchanger ), w/High CFM.
MTI = Indirect Gas Heat ( Multiple Tube Heat Exchanger)
HTDM = Indirect Gas Heat ( 2 - Pass Drum & Tube Heat Exchanger )
SC = Steam Coil
HW = Hot Water Coil
EC = Electric Heating Coil
AC = Air Turnover
e2: Heating Capacity ( from 20 MBH to 7500 MBH) or Electric Capacity ( from 1 KW to 550 KW )
f1: HP = Heat Pipe, HC = Heat Core, EW = Enthalpy Wheel, RA = Run Around Glycol
f2: Size or Capacity
g1: EH = Electric Humidifier, GH = Gas to Steam Humidifier, CD = Evaporative Humidifier
g2: Capacity
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User’s Information
3. User’s Information
WARNING
Failure to observe the following instructions may result
in premature failure of your system, and possible
voiding of the warranty.
DX Package Units
Never cut off the main power supply to the unit, except for complete shutdown.
Always control the system from the thermostat, or control panel, and never at the main power
supply (except in an emergency, or complete shutdown of the system).
During the cooling season, if the airflow is reduced due to dirty air filters, or other reasons, the
cooling coils will get too cold and result in excessive liquid return to the compressor. As the liquid
concentration accumulates, oil is washed out of the compressor leaving it starved for lubrication.
The compressors must be on a minimum of four minutes, and off for a minimum of five minutes.
The cycle rate must not exceed eight starts per hour.
THE COMPRESSOR LIFE WILL BE SERIOUSLY SHORTENED BY RESULTING REDUCED
LUBRICATION, AND THE PUMPING OF EXCESS AMOUNTS OF LIQUID OIL AND
REFRIGERANT.
Hydronic Cooling and Heating
Non-compressorized units may contain chilled water and/or hot water coils. Units are provided
with internal header connections for field piping. Vent and drain connections can be accessed
within the unit.
Piping is to be run via the piping chase inside the coil compartment, accessible through the coil
compartment access door on the front of the unit. Piping to coil header connections must be
supported independently of the coil to prevent undue stress from weakening connections over
time. Allow adequate flexibility for thermal expansion of the piping.
Use proper glycol solutions or brines to help prevent coil freezing. Consult the designer or
project engineer if you have concerns about lower than normal entering air temperature (typically
air temperatures below 40ºF) that could cause coils to freeze.
Gas or Electric Heating
The system is designed to heat a given amount of air each minute of operation. If the amount of
air heated is greatly reduced (approximately 1/3 capacity), the heat exchanger (or heat coil if
electric) temperature will increase above acceptable levels, and will result in shut down by a high
temperature safety switch incorporated into either the heat exchanger, or the heater area.
WARNING
GAS HEAT UNITS – If heat shuts off due to safety
switch, or gas supply shut off failure, then always
close manual gas valve to unit prior to any electrical
service. Prolonged overheating of the heat exchanger
will shorten its life.
Multiple Unit Operation
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User’s Information
When several units are used in conditioning the space, and any are combination heatingcooling units, all system thermostat switches must be set at either heating, cooling, or set at ‘OFF’.
Do not run part of a system switched to an opposite mode. Cooling only units should be switched
to ‘OFF’ at the thermostat during the heating season.
Wiring Diagrams
A complete set of unit specific wiring diagrams in both ladder and point-to point form are
laminated in plastic and affixed to the inside of the service access door.
Condensate Piping
A drain trap must be connected to the drain connection located on the side or back of the unit. If
codes require a condensate drain line, it should be the same pipe size as the drain nipple and
should pitch downward for its entire length toward the drain.
A “P” Trap could be required and supplied by others. An air break should be used with long runs
of condensate lines.
Normal Thermostat Operation
For Heating
- Set system switch to ‘HEAT’
- Set fan switch to ‘AUTO’ or ‘ON’
- Set the desired temperature
For Cooling
- Set system switch to ‘COOL’
- Set fan switch to ‘AUTO’ or ‘ON’
Air Circulation
- Set the system switch to ‘OFF’
- Set the fan switch to ‘ON’
System Off
- Set the system switch to ‘OFF’
- Set the fan switch to ‘AUTO’
- Do not change temperature setting
- With these settings the system id shut down, except for the 24-volt control system power, and
the compressor crankcase heater (approx. 60W).
Night and Vacancy Operation
To reduce the operation time during low load periods, it is recommended that the temperature
setting be increased by 5 ºF during non-occupied periods of the cooling season in commercial
buildings, such as nights and weekends. Decrease the temperature by 10ºF at these times during
the heating season.
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User’s Information
Gas Heating System
The heating section is for use with natural gas supply pressure of 7” to 14” w.c. The unit may
also utilize propane gas ( If order or after installation of a field conversion kit) with a supply
pressure to the valve of 11” to 12” w.c. The rating plate on the furnace must be inspected to make
sure the unit is stamped for proper gas. A 1/8” pressure tap should be field supplied by the
installer in the piping just ahead of the gas valve.
A centrifugal blower that draws in outside air through a protected opening supplies
combustion air on MTI model. This induced draft blower introduces the air to the blower tubes,
which assures even primary and secondary airflow.
Gas heating units use high efficiency dimpled heat exchanger, for MTI series, it has multiple
tube heat exchanger, for HTDM series, it has 2-pass drum & tube heat exchanger, for GIDM
series, it has 4-pass drum & tube heat exchanger. The instruction of all gas heating system units
please refer to the relevant operation & installation manual attached.
Figure 4: Gas Heat Exchangers
Hot Gas Bypass Systems on DX Units
Some DX cooling units may contain Modulating Hot Gas Bypass systems as factory installed
options. Piping and valves for this systems will be within the casing of the unit w/ access via a
hinged access door.
The purpose of external hot gas bypass is to prevent coil freeze-up and compressor damage
from liquid slugging during periods of low airflow operation, or with low entering air temperatures.
Hot gas bypass is useful when the air conditioning system is subject to variations in load
caused by varying air volume or large proportions of outside air. The hot gas bypass valve meters
discharge refrigerant gas to the distributor downstream of the expansion valve, and at the
entrance to the evaporator distributor tubes. The quantity of the gas varies to control a constant
suction pressure, allowing more gas to flow as suction pressure decreases.
Hot gas bypass is a standard feature on most ICE models
.
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User’s Information
Figure5: Hot Gas Bypass System
Hot Gas Bypass Valve
Filter Sizes
The required filter sizes of unit depend upon the different requirements of each Air Handling
unit.
Please refer to the rating plate of each unit for information about size and quantity of filters.
Cabinet Construction
All Air Handling units are insulated with 1” – 1 1/2 “lb, 2” – 1 1/2 “lb, 2” – 3”lb fiber glass
insulation. All cabinet roof, floor and doors use double-wall satin coat steel.
Please refer to figure 6 for more details of casing construction.
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User’s Information
Figure 6: High Performance Composite Panel
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Delivery
4. Delivery
ALL SHIPMENTS ARE F.O.B. THE FACTORY. IT IS THE RESPONSIBILITY OF THE
RECEIVING PARTY TO INSPECT THE EQUIPMENT UPON ARRIVAL.
Receipt & Inspection
The unit should be inspected for damage that may have occurred in transit. Do the following
upon receipt:
1. Inspect all items for internal, external, and concealed damage before accepting.
2. Assure carrier is in compliance with Bill of Lading instructions.
If damage is found:
1. Note all damage on Bill of Lading immediately:
−
Photograph damage if possible
−
Do not move or discard damaged packaging materials
2. Call carrier immediately to file a freight claim, and to schedule a freight inspection
3. When damage is repairable, contact ICE Western for replacement parts
4. With permission of carrier, make the repairs
5. Stay in contact with carrier to ensure payment of your claim
If repairs must be made to damaged goods, the factory must be notified before any repair
action is taken. Equipment alteration, repair, or unauthorized manipulation of damaged equipment
without the manufacturer’s consent will void all product warranties. Contact the ICE Western for
assistance with handling damaged goods, repairs, and freight claims.
Verify the equipment against the order documents upon delivery. If what you received does not
match your order exactly, then notify your Sales Representative at once.
Storage
This equipment is designed for indoor or outdoor use. However, if installation will not occur
immediately following delivery, then store equipment in a protected area, and in the proper
orientation as marked on the packaging with all internal packaging in place. Secure all looseshipped items.
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Installation
5. Installation
General
The installation of this equipment shall be in accordance with the regulations of authorities
having jurisdiction and all applicable codes. It is the responsibility of the installer to determine and
follow the applicable codes.
NOTE: Low head pressure may lead to poor, erratic refrigerant feed control at the thermostatic
expansion valve. The units have automatic control of the condenser fans which should provide
adequate head pressure control down to 50ºF (10ºC) provided the unit is not exposed to windy
conditions. The system designer is responsible for assuring the condensing section is not exposed
to excessive wind or air recirculation.
CAUTION
Sharp edges on sheet metal and fasteners can
cause personal injury.
This equipment must be installed, operated, and
serviced only by an experienced installation company
and fully trained personnel.
Handling
Be aware of what is contained in the equipment!
Dependent upon the optional accessories that were ordered, this equipment may contain fragile
components and delicate electronics. Although the unit is constructed of sturdy materials, avoid
impacts and handling methods that may damage internal apparatus and structure, or the exterior
painted surfaces of the unit. Take care not to apply destructive force to coils, or other parts
protruding beyond the extents of the unit casing. Always handle the unit by its exterior casing.
Keep equipment free from debris, and construction waste during installation. Foreign materials
may adversely affect unit operation resulting in premature failures that will not be covered by the
manufacturer’s warranty. Attach all service panels, and cover all exposed equipment when work is
not being performed. Leave unit protected from other construction until start-up is to occur.
WARNING
Always wear hand and eye protection when handling,
installing, servicing, or maintaining equipment. Sharp
or pointed edges, moving parts, and flying debris may
cause personal injury.
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Installation
Heating & Cooling Systems
Gas Heating System
The units are equipped with a direct spark ignition system that proves the burner operation with
each call for heat. Power to the ignition control is 24V or 120V. Burner ignition is by a high
intensity spark.
When heat is called for, the cooling system is inoperable except for the indoor blower motor.
Heating is accomplished by firing gas into the heat exchanger assembly.
IMPORTANT NOTICE – All gas-fired heat exchangers are completely tested at the factory before
shipment. This will remove nearly all of the oils that have been used in the manufacturing process,
however trace amounts may remain. When performing the initial start-up at the jobsite, it is highly
recommended that people, or any other living animals, that may be sensitive to the residual odors
or gases, NOT be present in the conditioned space during start-up. In all cases, including the
initial factory firing and testing, all of the gases will be under the minimum acceptable level of
concentration for human occupancy.
WARNING
Those sensitive to odors or gases from trace amounts
of residual oils should NOT be present in the
conditioned space during the start-up of a gas-fired
installation.
Electric Heating System
Heating is accomplished by passing electrical current through a specified amount of resistance
heaters that produce the required heat. The indoor blower motor energizes prior to the heaters.
DX Cooling Section
All direct expansion refrigeration systems are factory assembled, charged with refrigerant,
tested, and operated. These systems include liquid line filter driers, expansion valves, and scroll
compressors or semi-hermetic Carlyle compressors. Compressors are equipped with a positive
pressure forced lubrication system. The air-cooled condenser coil is constructed of copper tubes
and mechanically bonded aluminum fins, and air is pulled through by a propeller fan. The
evaporator coil is draw through type constructed of copper tubes and mechanically bonded
aluminum fins, and may have optional coating for hazardous locations.
Chilled Water or Non-Compressorized Cooling Section
Chilled water, or non-compressorized units, have factory-installed coils. Systems are provided
with internal header connections for field piping.
Coils are constructed of copper tubes and mechanically bonded aluminum fins.
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Installation
Service Clearances
In addition to providing adequate space around the unit for piping coils and drains, access to at
least one side of the unit is always required to allow for regular service and routine maintenance,
which includes filter replacement, drain pan inspection and cleaning, fan bearing lubrication, and
belt adjustment. Provide sufficient space—at least equal to the length of the coil—on the side of
the unit for shaft removal and coil removal. Space, at least equal to the length of the side coil, is
required for coil removal. Space, at least equal to the fin height, is required for top coil. See Figure
7 for servicing space requirements.
For routine maintenance purposes, access normally is obtained through the access doors or by
removing panels. Fan and filter sections are always provided with a service door on one side of
the unit. If requested, doors can be provided on both sides of the unit. Optional service doors are
available for most section types and are provided based on customer request.
If component replacement is required, the top panel also can be removed. If necessary, the unit
can be disassembled. Maintain at least 54” of clearance in front of electrical power devices
(starters, VFDs, disconnect switches and combination). Electrical power devices that are mounted
on the side of the unit typically are up to 12” deep. See Figure 8.
Figure 7: Servicing Space Requirements
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Installation
Figure 8: Service Clearance for Electrical Power Devices
Setting the Unit
Units should always be installed level, and above water drainage routes. Outdoor unit operation
can be affected by wind. It is good practice to position outdoor unit condensing sections away from
prevailing winds.
Protective Shipping Brackets
Before staring the unit, be sure to remove the protective shipping brackets, or bolts.
Ground Setting
Set the unit on a solid slab high enough above the soil grade to allow water to drain away from
the base of the unit. The unit should be set on a slab that has been placed over compact, level
earth. A poured concrete (permanent) slab is recommended.
Roof Setting with Curb
Mount roof curbs first, and locate so duct connections will clear any structural members of the
building. When using the factory curb, make openings in roof decking large enough to allow for
duct penetrations and workspace only. Do not make openings larger than necessary. Set the curb
to coincide with the openings. CURB MUST BE LEVEL.
NOTE: PRIOR TO SETTING UNIT ON CURB – To ensure proper isolation and seal between the
unit and the curb, gasket material MUST BE APPLIED to the curb on ALL SURFACES meeting
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Installation
with the unit.
Hoisting
Lifting lugs are provided on the bottom of the unit.
If cables or chains are used to hoist the unit, they must be of the appropriate length, and care
should be taken to prevent damage to the unit.
It is recommended that the unit be hoisted with the outside air hood (if present) in the shipped
position.
Before lifting unit, be sure that all shipping material is removed. Secure hooks and cables at
all lifting points/lugs provided on the unit.
Prior to setting the rooftop unit onto the roof curb, be sure that the gasket material has been
applied to all curb surfaces meeting with the unit.
Hoist unit to a point directly above the curb and duct openings. Carefully lower and align the
unit’s utility and duct openings so the unit perimeter fits around the curb. Make sure the unit is
properly seated on the curb and is level.
Outside Air Hood (Optional)
Units equipped with outside air intake will have an outside air hood. The outside air hood must
be installed prior to unit operation. Ensure the air hood is properly sealed to prevent leakage.
Outdoor air intake adjustments should be made according to building ventilation, or local code
requirements.
Figure 9: Lifting Lugs
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Installation
WARNING
DO NOT USE OPEN FLAME OR OTHER SOURCE
OF IGNITION FOR LEAK TESTING.
When pressure testing the gas supply piping, the
furnace must be isolated, or disconnected by closing
individual manual shut-off valve from the gas supply.
Gas valve can be damaged if subjected to more than
0.5 PSIG pressure.
WARNING
Install gas fired units so that the flue discharge vent
is located a minimum of 120” from openings through
which combustion products can enter the building.
Never point flue discharge in direction of air intake for
other equipment. Unit location must assure combustion
and ventilation airflows are never obstructed.
Electrical
Check the unit data plate to make sure it matches the power supply. Connect power to the unit
according to the wiring diagram provided with the unit. The power and control wiring may be
brought in through the utility entry. Do not run power and control wires in the same conduit.
Protect the branch circuit in accordance with code requirements. The units must be electrically
grounded in accordance with the National Electric Code, ANSI/NFPA No. 70. In Canada use
current C.S.A. Standard C22.1, Canadian Electric Code Part 1.
Connect power wiring to the terminal block, or optional disconnect switch. The manufacturer
has done all wiring beyond this point, and cannot be modified without affecting the unit’s agency
and/or safety certification, and warranty.
Power can be applied to the unit after the control wiring is connected.
Standard Control Board
This printed circuit board is the central control point for all the electrical components in the unit.
Low voltage terminals are provided for connection to the wall mounted thermostat of the
customer’s selection, or as furnished by ICE Western.
Confirm the optional features that were specified and purchased. This will allow proper selection
of the number of control options listed below that may need additional wiring.
Each Air Handling Unit has a standard Cooling Lock-out feature that prevents the compressor
cooling mode when the outdoor temperature is below 55ºF. Each unit may has a condenser fan
cycle feature that delays the start of the condenser fan until there is satisfactory compressor
discharge pressure.
Eight colored LEDs are furnished on the circuit board to provide status information.
Every unit is furnished with a high and low pressure sensor, as well as an outdoor air
temperature sensor. These sensors provide a signal to the control board that also present a fault
condition or Mode indicator at the LEDs with a code.
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Installation
Figure 10: Power and Control Wiring
Unit Burner Proving System
Optional Control Relay Board
Ambistat Temperature Controller
HTDM Unit Control Board
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Installation
Optional Control Board
This Control Relay Board is supplied within the Packaged DX Cooling model when it has been
furnished with certain optional features specified by the customer. Among these are an
Economizer, Return Air Bypass, Hot Gas Bypass and many other optional features according to
the requirements.
Thermostat
The low voltage room thermostat should be located on an inside wall 4 to 5 feet above the
floor where it will not be subjected to drafts, sun exposure or heat from electrical fixtures or
appliances. The control wire size must be large enough to prevent excess voltage drop that
may cause improper operation of the equipment. The Packaged DX Cooling unit control board
has approximately a 1/2 amp current flow through the thermostat. Follow the thermostat
manufacturer’s instructions to set the heat anticipator.
Table1: Low Voltage Thermostat Field Wiring Size
T-stat Load Amps
Less than 1.0
50 Ft.
18 ga.
Length of Wire Run
100 Ft.
18 ga.
150 Ft.
16 ga.
Single Stage Heating & Cooling
The terminals on a single stage thermostat should be connected to
labeled terminals on the Control Terminal Strip in the Packaged DX Cooling unit.
the similarly
Multiple Step Compressor Cooling Models
- The Packaged DX Cooling models with multiple step cooling compressor may use multiple step
cooling thermostat connected to the terminals on the Control Terminal Strip in the Packaged DX
Cooling unit.
Economizer Option
The economizer option is used to provide cooling at lower outdoor air temperatures and to
provide a quantity of ventilation air to the occupied space. The economizer option can be selected
with either a sensible outdoor air temperature sensor or an enthalpy sensor that measures the
heat content in the outdoor air. The economizer controller can be field installed or factory
installed by ICE Western as selected by the customer.
Supply Air Temperature Sensor
A supply air temperature sensor is provided within the equipment. This sensor must be installed
in the downstream supply air ductwork at a sufficient distance from the equipment to provide a
correctly mixed supply air temperature back to the unit control board.
Factory Installed
When factory installed the control board will use the outdoor air sensor and the cooling signal
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Installation
from the thermostat to provide a first stage of cooling using the outside air when possible before
starting the compressor and mechanical cooling cycle. The thermostat wiring to the control board
with single or multi-stages should be wired as listed previously.
Lockout Modes
Gas Heating
The heating mode will be locked out if the ignition system safety monitors trip 3 times
during a call for heating.
Electric Heating
The heating mode will be locked out if the high temperature limit switch trips 3 times during
a call for heating.
Cooling
The cooling mode will be locked out if the low pressure switch safety switch trips 3 times
during a call for cooling or dehumidification.
Cooling operation will be locked out if the Outside Air Sensor is missing or defective.
The economizer operation during dehumidification will be locked out if the Air Sensor is
defective.
To reset the lockout condition, reset the tripped device. If the device trips again, call
qualified service technician.
Condensate Piping
AH Packaged DX Cooling units are equipped with a condensate drain connection, and ‘P’
traps are furnished by others. The drain connection must be used and individually trapped to
ensure a minimum amount of condensate accumulation in the drain pans.
Although drainage of condensate directly onto the roof may be acceptable in certain areas, is
not recommended as it can damage some types of roofing, and roofing materials. Refer to local
codes for legalities concerning condensate drainage.
Condensate can be piped to a gutter system, or away from the building into other drainage.
Ideally, condensate will be piped into the building drainage system, in which case the drainpipe
may need to penetrate the roof external to the unit itself.
The drain line should be pitched away from the unit with at least 1/8” of slope per foot. On
longer runs, an air break should be used to ensure proper drainage.
Drain pans in air conditioning equipment have moisture present and require periodic cleaning to
remove build up of algae, and/or bacteria. Cleaning the drain pans reduces the probability of
plugged drain lines and overflow of the pan itself. All cleaning of the drain pans and inside of the
equipment should be done by qualified personnel.
ICE WESTERN
23
Installation
Figure 11: DX Coil Piping and Condenser
Figure 12:
Scroll Compressor
ICE WESTERN
Digital Scroll Compressor
24
Installation
Figure 13: Crankcase Heater
ICE WESTERN
25
Start-Up
6. Start-Up
General
ONLY QUALIFIED, AUTHORIZED PERSONNEL SHOULD POWER ON, OR START-UP THIS
EQUIPMENT.
The use of common sense, and good practice in the installation, and start-up of equipment will
prevent many potential problems with the system in the future.
Before starting up the equipment, building construction should be complete, and start-up
personnel should:
- Have a working knowledge of general HVAC and mechanical commissioning procedures and
practices;
- Be familiar with unit functions, features, optional unit accessories, and all control sequences;
- Have appropriate literature on hand for consultation.
Procedures
EQUIPMENT OPERATION DURING CONSTRUCTION IS NOT RECOMMENDED.
CONSTRUCTION SITE POLLUTION CAN AFFECT UNIT OPERATION, AND SERIOUSLY
DEGRADE PERFORMANCE. OPERATION DURING CONSTRUCTION WILL VOID ALL
MANUFACTURER’S WARRANTIES.
Before the structure is occupied, the installation, and/or start-up personnel must take three
essential steps:
1. Pre-Startup Check Out
2. Start-Up
3. Commissioning
Pre-Startup Check Out
All equipment should be thoroughly checked for loose wiring, free spinning condenser fan and
blower wheel, and well fitting access panels. Unit should not be operated without proper ductwork,
and access panels installed, except as required during start-up and air balancing.
Install gauges, voltmeter, and ammeter before start-up. Observe refrigerant pressures during
initial operation. Note, and determine the cause of any excessive sound, or vibration. Follow
procedures outlined below to start each piece of equipment.
1. Verify that the unit is completely and properly installed with ductwork connected.
2. Verify that all construction debris is removed, and that the filters are clean.
3. Verify that all electrical work is complete and properly terminated.
4. Verify that all electrical connections in the unit control panel and compressor terminal box are
tight, and that the proper voltage is connected.
5. Verify all nameplate electrical data is compatible with the power supply.
6. Verify the phase voltage imbalance is no greater than 10%.
7. Verify that gas piping is complete and leak tight.
8. Verify that the shutoff cock is installed ahead of the furnace, and that all air has been bled from
the gas line.
9. Manually rotate all fans and verify that they rotate freely.
10. Verify that the belts are tight and the sheaves are aligned.
11. Verify that all setscrews and fasteners on the fan assemblies are still tight.
12. Verify that the evaporator condensate drain is trapped and that the drain pan is level.
13. If unit is curb mounted, verify that the curb is properly flashed to prevent water leakage.
14. Before attempting to operate the unit, review the control layout description to become familiar
ICE WESTERN
26
Start-Up
with the control locations.
15. Review the equipment and service literature, and the wiring diagrams to become familiar with
the functions and purposes of the controls and devices.
16. Determine which optional controls are included with the unit.
17. Before closing (connecting) the power disconnect switch, open (disconnect) the following unit
control circuit switches:
a. Main Control Panel
- Turn system switch to OFF.
- Electric heat units: turn switch to OFF.
- Turn compressor control circuit switches to OFF.
b. Furnace Control Compartment
- Turn furnace switch to OFF.
- Main Control Panel Switch to OFF.
Start-Up
NOTE:
1. Failure to adhere to the following start-up procedures will void all manufacturer’s warranties.
2. Completed factory test sheets are in the equipment literature packet shipped inside the unit.
Factory run-test readings recorded on the test sheets may be helpful to reference during start-up.
CAUTION
IMPORTANT FOR 3 PHASE UNITS ONLY!
CHECK COMPRESSOR FOR PROPER ROTATION BY STARTING
UNIT ONLY AFTER CONNECTING PRESSURE GAUGES TO
SUCTION AND DISCHARGE LINES. SCROLL COMPRESSORS
WILL BE DESTROYED IF OPERATED IN THE WRONG
DIRECTION.
Sheave Alignment
Mounting:
1. Verify both driving and driven sheaves are in alignment and the shafts are parallel. The center
line of the driving sheave must be in line with the center line of the driven sheave. See figure 12.
2. Verify that all setscrews are still tight before starting drive. Check setscrew and belt tension
after 24 hours of service.
ICE WESTERN
27
Start-Up
Figure 14: Sheave Alignment
Must be
Parallel
Bearing
Center lines must coincide
Motor
Adjustable Sheave
Must be
Parallel
Drive Belt Adjustment
General Rules of Tensioning
1. The ideal tension is the lowest tension at which the belt will not slip under peak load conditions.
2. Check tension frequently during 24-48 hours of operation.
3. Over tensioning shortens belt and bearing life.
4. Keep belts free from foreign material which may cause slippage.
5. Inspect V-belts on a periodic basis. Adjust tension if the belt is slipping. Do not apply belt
dressing. This may damage the belt and cause early failure.
Tension Measurement Procedure
1. Measure the belt span. See figure 13.
2. Place belt tension checker squarely on one belt at the center of the belt span. Apply force to the
checker, perpendicular to the belt span, until the belt deflection equals to belt span distance
divided by 64. Determine force applied while in this position.
3. Compare this force to the values on the drive kit label found on the fan housing.
Figure 15: Drive Belt Adjustment
ICE WESTERN
28
Start-Up
Fan Start-up
1. Verify all duct isolation dampers are open.
2. Verify the fan rotation is correct.
3. a. Put Unit into summer mode at remote panel.
b. Dampers should open then end switch will start blower.
c. Record motor Amps to verify against rated.
4. If damper do not open:
a. Check fuses.
b. Check the manual motor protectors or that the circuit breakers have not tripped.
c. Check the optional phase monitor.
Refrigeration System
I. Capacity control adjustments for Carlyle compressor
Pressure-Operated Control Valve is controlled by suction pressure and actuated by the
discharge pressure. Each valve controls 2 cylinders (one bank). On start-up, controlled cylinders
do not load up until differential between suction and discharge pressures is approximately 25
psi.
ADJUSTMENTS
Control Set Point ( cylinder load-up point ) is adjustable from 0 psig to 86 psig.
Turn adjustment nut clockwise to the bottom stop. In this position, the cylinder load-up
pressure is 86 psig. Control set point is regulated to desired pressure by turning the adjustment
nut counterclockwise. Each full turn clockwise decreases the load-up point by approximately 7.2
psi. Approximately 12 turns changes the pressure from 85 psig to 0 psig.
Pressure Differential between cylinder load-up point and unload point is adjustable from 6
psi to 16 psi.
Turn adjustment screw counterclockwise to the back-stop. In this position, the differential is 6
psi. Differential is set by turning the adjustment screw clockwise. Each full turn clockwise
increases the differential by approximately 0.8 psi. Approximately 5 turns changes the differential
from 6 psig to 10 psig
Electrically-Operated Control Valve is actuated by an electric solenoid, which must be of the
same voltage as the unit control circuit. No adjustments are necessary. When the solenoid is
de-energized, the orifices and passage-ways in the valve are aligned for loaded condition,
shown in figure 14. When the solenoid is energized, the system is unloaded as shown in figure
14.
Suction Cutoff Unload Operation – The capacity control valve shown in figure 14 is the
pressure–operated type, which is the one in the following description. In the electrically-actuated
valve, the function of a similar poppet valve is the same as in the pressure-operated type but it is
moved by a solenoid. The function within the cylinder head is the same for both types of control
valve.
LOADED
When suction pressure rises high enough to overcome control set point spring, the diaphragm
snaps to the left and relieves pressure against the poppet valve. The drive spring moves the
poppet valve to the left and it seats in the closed position.
With poppet valve closed, discharge gas is directed into the unload-piston chamber and
pressure builds up against the piston. When pressure against unloader piston is high enough to
overcome the unloader valve spring, piston moves valve to the right, opening suction port.
Suction gas can now be drawn into the cylinders and the bank is running fully loaded.
ICE WESTERN
29
Start-Up
UNLOADED
As suction pressure drops below set point, control spring expands, snapping diaphragm to
right. This forces poppet valve open and allows gas from discharge manifold to vent through
base of control valve to suction side. Loss of full discharge pressure against unloader piston
allows unloader valve spring to move valve left to closed position. The suction port is blocked,
isolating the cylinder bank from the suction manifold. The cylinder bank is now loaded.
Figure 16: Suction Cut-Off Unloaded Operation
ICE WESTERN
30
Start-Up
II. Adjustments for Dual Pressure Control
( JOHNSON CONTROLS: P70, P72, and P170 Series Controls )
All-Range Controls (Low Side Only)
The low side of All-Range controls displays the CUT IN and CUT OUT setpoints. Turn the
range screw to adjust the cut in and cut out setpoints up or down simultaneously which maintains
the set differential value. Turn the differential screw to adjust the cut out setpoint and change the
differential value.
Dual Pressure Control (High Side)
The high side scale plate of the P70, P72, P170 dual pressure controls display only the CUT
OUT setpoint. Turn the range screw to adjust the cutout setpoint. The differential is fixed at about
65 psi.
To adjust the dual pressure controls:
Set low side cut in setpoint by adjusting low side range screw. All-Range Controls: Turn the
screw clockwise to raise the cut in setpoint.
Adjust the differential screw. All-Range Controls: Turn the screw clockwise to raise the cut out
setpoint.
Set high side cut out setpoint by adjusting high side range screw. Turn screw clockwise to raise
the cut out setpoint. (High side differential is fixed.)
III. Hot Gas Bypass Regulator Adjustments
Install an accurate pressure gauge at the control (sensing) point at the outlet side of the valve.
To adjust the valve, loosen Seal Nut and turn Adjusting Stem clockwise to raise the pressure
or counterclockwise to lower the pressure.
The regulator should be set under actual operating conditions. For hot gas bypass this
condition occurs under minimal system load conditions. The regulator should be adjusted to
maintain minimum desired suction pressure. Hot gas flow through the valve can be detected by
listening to the gas flow through the regulator or by feeling the outlet pipe for warmth. When it is
not possible to simulate minimum load conditions, an approximate setting may be obtained by
adjusting the valve until gas flow begins, observing the gauge reading, and then turning the
adjusting stem counterclockwise for the required number of turns to obtain the desired minimum
pressure. This setting should be checked and readjusted as needed under actual conditions.
IV. Typical Malfunctions Of Solenoid Valve
( SPORLAN: Solenoid Valves )
Coil Burnout
a. Coils burnouts are extremely rare unless caused by one of the following:
b. Improper electrical characteristics.
c. Continuous over-voltage, more than 10%.
d. Under-voltage of more than 15%. This applies only if the operating conditions are such that
reduced MOPD causes stalling of the plunger, which results in excessive current draw.
e. Incomplete magnetic circuit due to the omission of parts such as: coil housing, coil sleeves,
coil spring, coil housing bottom plate or plunger on the MKC molded model coils.
f. Mechanical interference with plunger movement which may be caused by a deformed
enclosing tube.
g. Voltage spike.
h. Valve ambient exceeds 120ºF.
i. Fluid or gas temperatures greater than 240 ºF, while the valve ambient is 120 ºF.
Failure To Open (Normally Closed Types)
a. Coil burned out or an open circuit to coil connections.
ICE WESTERN
31
Start-Up
b. Improper electrical characteristics.
c. In pilot operated valves, dirt, scale or sludge may prevent the piston, disc or diaphragm
from lifting. This could also be caused by a deformed body.
d. High differential pressure that exceeds the MOPD rating of the valve.
e. Diameter reduction of synthetic seating material in pilot port because of high temperatures
and/or pressures, or severe pulsations.
Failure To Close
a. Valve is oversized.
b. In pilot operated valves, dirt, scale or sludge may prevent the piston, disc or diaphragm
from lifting. This could also be caused by a deformed body.
c. Held open by the manual lift stem.
d. In pilot operated valves only, a damaged pilot port may prevent closing.
e. A floating disc due to severe discharge pulses.
f. Have voltage feedback to the coil after the coil de-energizes.
V. Superheat Adjustment Of Thermal Expansion Valves
( EMERSON: T-Series Thermal Expansion Valves )
T-Series Thermal Expansion Valves are factory-set for a static superheat. However, the
superheat should be adjusted for the application. Improper superheat adjustment may result in
system malfunction. To properly adjust thermal expansion valve to other superheat settings:
a. Remove seal cap on side of valve.
b. Turn the adjusting stem in a clockwise direction to increase the superheat, and
counterclockwise to decrease superheat.
NOTE: Allow adequate time between adjustments for system to stabilize before checking
superheat.
c. When the desired superheat setting is achieved, reinstall the seal cap.
Gas Heating
1. Ensure that gas lines have been purged of air
- wait 5 minutes after purging to allow gas to clear before continuing with startup.
2. Turn the unit power on.
3. Turn the unit blower on, and check for correct rotation.
4. If correct, take blower amp readings, and compare to see if the amp draw is within the safety
factor area of the motor. Once correct, turn blower off.
5. Turn on the first stage of heating.
6. Check to see that induced draft motor starts.
7. Check to see that main burner lights within 5 seconds of the heating call.
8. Check gas input and manifold pressure, and adjust if necessary.
9. Ensure blower started after burner ignition.
10. Observe burner flames for light blue color, and even flames across burner (propane flames
will have yellow tips). Set with co analyzer.
11. Check temperature rise across heating section while all stages are on.
12. If temperature rise is within range, turn all heating calls off.
13. Check that blower stops after heat turns off.
Electric Heating
1. Turn the unit power on.
2. Turn the unit blower on, and check for correct rotation.
3. If correct, take blower amp readings, and compare to see if the amp draw is within the safety
ICE WESTERN
32
Start-Up
factor area of the motor. Once correct, turn blower off.
4. Turn on the first stage of heating.
5. Check amp draw of each element of each stage.
6. Check temperature rise across heating section while all stages are on.
7. If temperature rise is within range, turn all heating calls off.
8. Check to see that blower stops.
Optional Equipment
Operation of each of the following, if equipped in the unit, must be checked according to that
item’s manufacturer’s specifications:
- Clogged filter switch
- Supply air smoke detector
- Return air smoke detector
- Hot gas bypass
Commissioning
The commissioning of an HVAC system is the process of achieving, verifying, and documenting
the performance of that system to meet the operational needs of the building. This may not be a
formal process in smaller structures, such as a normal residence, but some form of owner
acceptance will occur. Adjustments made during the commissioning phase may include air
balancing, or configuration of controls, and operational sequences.
Air Balancing
High performance systems commonly have complex air distribution and fan systems. Unqualified
personnel should not attempt to adjust fan operation, or air circulation, as all systems have unique
operating characteristics. Professional air balance specialists should be employed to establish
actual operating conditions, and to configure the air delivery system for optimal performance.
Water Balancing
A hydronic specialist with a complete working knowledge of water systems, controls, and
operation must be employed to properly balance the entire system. Unqualified personnel should
not attempt to manipulate temperatures, pressures, or flow rates, as all systems have unique
operating characteristics, and improper balancing can result in undesirable noises and operation.
Controls
A variety of controls and electrical accessories may be provided with the equipment. Identify the
controls on each unit by consulting appropriate submittal, or order documents, and operate
according to the control manufacturer’s instructions. If you cannot locate installation, operation, or
maintenance information for the specific controls, then contact your sales representative, or the
control manufacturer for assistance.
ICE WESTERN
33
Start-Up
WARNING
Do not alter factory wiring. Deviation from the supplied
wiring diagram will void all warranties, and may result
in equipment damage or personal injury.
Contact the factory with wiring discrepancies.
Figure 17: Gas Burner
ICE WESTERN
34
Start-Up
UNIT START-UP CHECKLIST
MODEL NO:
DATE:
I.
SERIAL NO:
TECHNICIAN:
.
.
PRE-START-UP:
Verify that all packaging materials have been removed from unit
Verify installation of outdoor air hood
Verify that condensate connection is installed per installation instructions
Verify that all electrical connections and terminals are tight
Check that indoor-air filters are clean and in place
Check that outdoor air inlet screens are in place
Verify that unit is level
Check fan wheels and propeller for location in housing and verify setscrew is tight
Verify that fan sheaves are aligned and belts are properly tensioned
Verify that compressors are rotating in the correct direction
Verify installation of thermostat/space sensor
Verify configuration values for electronic controls
Verify that crankcase heaters have been energized for at least 24 hours
II. START-UP
ELECTRICAL
Supply voltage
L2-L3
L1-L2
L3-L1
.
Compressor AMPS – Compressor A1
– Compressor B1
– Compressor C1
Condenser Fan AMPS – Fan #1
– Fan #2
L1
L1
L1
L1
L1
L2
L2
L2
L2
L2
L3
L3
L3
L3
L3
.
.
.
.
.
Supply Fan AMPS
L1
L2
L3
.
TEMPERATURES
ºF DB (Dry Bulb)
ºF DB
ºF
Outdoor-air temperature
Return-air temperature
Cooling supply air
ºF WB (Wet Bulb)
PRESSURE
Refrigerant suction
Refrigerant discharge
Oil Pressure
Circuit A
Circuit B
Circuit C
Circuit A
Circuit B
Circuit C
A
PSIG
PSIG
PSIG
PSIG
PSIG
PSIG
PSIG
B
PSIG
REFRIGERANT
Type:
R22
R407C
R410A
R134a
Verify refrigerant charge using charging charts
GENERAL
Economizer minimum vent and changeover settings to job requirements
ICE WESTERN
35
Operation & Maintenance
7. Operation & Maintenance
General
Preventive maintenance is the best way to avoid unnecessary expense and inconvenience. Have
this system inspected at regular intervals by a qualified service technician. The required frequency
of inspections depends upon the total operating time and the indoor and outdoor environmental
conditions.
Planned Maintenance
Routine maintenance should cover the following items:
- Tighten all belts, wire connections, and setscrews.
- Clean the evaporator and condenser coils mechanically or with cold water, if necessary. Usually
any fouling is only matted on the entering air face and can be removed by brushing.
- Lubricate the motor and fan shaft bearings.
- Align or replace the belts as needed.
- Clean or replace the filters as needed.
- Check each circuit’s refrigerant sight glass when the circuit is operating under steady-state, full
load conditions. The sight glass should then be full and clear. If it is not, check for refrigerant
leaks. (A partially full sight glass is not uncommon at part load conditions.)
- Check for proper superheat.
- Check for proper subcooling.
- Check for blockage of the condensate drain. Clean the condensate pan as needed.
- Check the power and control voltages.
- Check the running amperage of all motors.
- Check all operating temperatures and pressures.
- Check and adjust all temperature and pressure controls as needed.
- Check and adjust all damper linkages as needed.
- Check the operation of all safety controls.
- Examine the gas furnace.
- Check the condenser fans and tighten their setscrews.
- Lubricate the door latch mechanisms.
Cooling
Coils should be inspected and cleaned at least once per year to ensure there is no
obstruction to airflow.
Evaporator Coil
Dirty evaporator coils will eventually freeze up, and often result in a time consuming, and
expensive service call. Clean filters will help to prevent dirt from accumulating on the evaporator;
however the evaporator should be cleaned annually with a soft bristled brush, and/or a noncorrosive coil cleaning solution.
Condenser Coil
One of the most overlooked maintenance requirements is the need to keep air moving freely
across air-cooled condensing coils. Dirty condensers, like evaporators, can significantly increase
cooling costs during the year. As a minimum, clean the condenser coil at the beginning of
each cooling season. It is preferable to use a medium pressure water spray from the inside
ICE WESTERN
36
Operation & Maintenance
of the condenser cabinet with a non-corrosive coil cleaning solution. TURN OFF all power to the
unit before cleaning.
Comb out any visible exterior fin damage to help maintain unit efficiency.
Condenser Fan
Always check condenser fan blades to ensure unobstructed, free rotation after manipulating
the unit cabinet in any way, and before turning power back on to the condenser. Clean the fan
blades if they are dirty.
Blower Assembly
Clean blower wheels are necessary to reduce electrical use, maintain capacity and reduce
stress on the unit. The blower wheel and blower section need to be inspected periodically, and
cleaned of dust, or debris.
To inspect and clean the blower; set thermostat to the “OFF” position; turn the electrical power
to the unit to the “OFF” position at the disconnect switch.
Figure 18: Blower Section
Gas Furnace
Planned maintenance is the best way to avoid unnecessary expense and inconvenience. Have
this system inspected at regular intervals by a trained and experienced service technician. The
following service intervals are typical for average situations but will have to be adjusted to you’re
your particular circumstances.
ICE WESTERN
37
Operation & Maintenance
Fuel pressure settings and control settings should be made only by persons thoroughly
experienced with the burner and control system, and must not be tampered with by persons
without such experience.
Always replace covers on burner controls and boxes as the electrical contacts are sensitive to
dust and dirt. Perform maintenance of controls, gas valves, and other components in accordance
with instructions contained in the manufacturer’s bulletins.
Monthly
Check air filters and replace if dirty.
Twice Yearly
1. Burner Air - Check burner fan wheel for dirt buildup and lint. Check combustion air intake louver
and flue box for dirt buildup and accumulation of windborne debris.
2. Cleaning - Inspect flue tubes and combustion chamber, cleaning as required. Keep burner
vestibule clean. Dirt and debris can result in burner air blockages.
Yearly
1. Gas Train - Check all valves, piping and connections for leakage. Inspect and clean flame rod,
ignition electrode, and burner manifold.
2. Condensate Pan/Drain/P-Trap – Check pan, drain, and p-traps for accumulation of debris.
Check that p-traps are filled with water at the start of each cooling season.
Chilled Water
Check remote chiller operations as per the manufacturer’s instructions. Check coolant flow
valves for correct operation and settings.
Filters
Open the filter access door. Slide filters towards you to inspect. Replace old filters with
the size indicated on each filter. Filters should be checked every 30 days and replaced or cleaned
as necessary.
IT IS IMPORTANT TO KEEP FILTERS, COILS, AND BLOWERS CLEAN!
Figure 19: Filter Section
ICE WESTERN
38
Operation & Maintenance
Cleaning
Inspect and clean unit interior at the beginning of each heating and cooling season and as
operating conditions require.
Service
In the event the unit is not functioning correctly and a service company is required, only a
company with service technicians qualified and experienced in both heating and air conditioning
should be permitted to service the systems in order to keep warranties in effect. The service tech
may call ICE Western if assistance is required.
BEFORE CALLING, THE MODEL AND SERIAL NUMBER OF THE UNIT WILL BE NEEDED
FOR ICE WESTERN TO HELP ANSWER QUESTIONS REGARDING THE UNIT.
ICE WESTERN
39
Pressure – Temperature Chart
8. Pressure – Temperature Chart
Temperature
ºF
ºC
R22
PSIG
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
140
145
150
43.0
48.8
54.9
61.5
68.5
76.0
84.0
92.6
102
111
121
132
144
156
168
182
196
211
226
243
260
278
297
317
337
359
382
-6.7
-3.9
-1.1
1.7
4.4
7.2
10.0
12.8
15.6
18.3
21.1
23.9
26.7
29.4
32.2
35.0
37.8
40.6
43.3
46.1
48.9
51.7
54.4
57.2
60.0
62.8
65.6
ICE WESTERN
Liquid
Pressure
(PSIG)
51.6
58.2
65.2
72.6
80.7
89.2
98.3
108
118
129
141
153
166
180
195
210
226
243
261
280
300
321
342
365
389
-
R407C
Vapor
Pressure
(PSIG)
38.0
43.6
49.6
56.1
63.1
70.6
78.7
87.3
96.8
106
117
128
140
153
166
181
196
211
229
247
266
286
307
329
353
-
R410A
PSIG
R134a
PSIG
78.3
87.3
96.8
107
118
130
142
155
170
185
201
217
235
254
274
295
317
340
365
391
418
446
476
507
539
573
608
18.4
22.1
26.1
30.4
35.0
40.1
45.5
51.3
57.5
64.1
71.2
78.8
86.8
95.4
104
114
124
135
147
159
171
185
199
214
229
246
263
40
Solenoid Valves
200RB/500RB Model
2
1
R-11
R-12
R-22
R-113
R-114
R-115
R-123
R-124
R-125
R-134a
R-401A
R-401B
R-402A
R-402B
R-404A
R-407A
R-407B
R-407C
R-500
R-502
R-507
200RB
500RB
AM
AH
DM
MM
ASC2
ü
ü
ü
ü
ü
ü
ü
ü
Refrigerant Compatibility
Verify Coil
Compatibilidad con Refrigerantes
Verifique la Bobina
Compatibilidade do Refrigerante
Verifique a bobina
Compatibilité du réfrigérant
3
Coil
Model
4
Vérifier la bobine
5
Do Not Bend Enclosing Tube
Flow Follows Arrow
Valve Orientation
No doble el casquillo del Embolo de la Aguja
El Flujo sigue la Flecha
Orientación de Válvulas
Não danifique o tubo de apoio da bobina
Barra Indica Posição do Fluido
Orientação da Válvula
Ne pas plier le tube
L’écoulement doit suivre la flèche
Orientation de la valve
6
T < 250°F (121°C)
7
Type F = SAE
Type P = FTP
8
Type T
Solder Techniques
Use Wrench On Valve Body Only
Coil Installation
Técnicas para Soldar
Utilice la llave sólo en el cuerpo de la Válvula
Técnicas de Soldagem
No corpo use sómente uma chave de boca
Instalación de la Bobina
Instalação da bobina
Technique de soudure
Utiliser la clé a molette sur le corps seulement
l’installation de la bobine
9
Coil Electrical Data
VAC/Hz
Maximum Amps
Inrush
Holding
VA
Holding
23
24/50
2.0
0.96
24/60
1.6
0.74
18
Transformer Selection
120/50
0.45
0.21
25
120/60
0.36
0.16
19
Selección del Transformador
208/50
0.19
0.08
17
Selecione transformador capacidade suficiente
208/60
0.15
0.06
12
Sélection du transformateur
220/50
0.24
0.10
24
0.19
0.08
19
0.11
0.05
24
480/60
0.09
0.04
19
t
t
t
t
240/60
480/50
50 in.-lb.
(5.6 N•m)
Manual Override
Vástago de Operación Manual
Acionamento manual
Ouverture manuel de la tige
Emerson Climate Technologies and the Emerson Climate Technologies logo are trademarks and service
marks of Emerson Electric Co. © 2004 Emerson Electric Co.
PA-00295 Oct 2006
Solenoid Valves
240RA/540RA Models
3
2
1
R-11
R-12
R-22
R-113
R-114
R-115
R-123
R-124
R-125
R-134a
R-401A
R-401B
R-402A
R-402B
R-404A
R-407A
R-407B
R-407C
R-500
R-502
R-507
Coil
Model
240RA
540RA
AM
AH
DM
MM
ASC2
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
Refrigerant Compatibility
Verify Coil
Compatibilidad con Refrigerantes
Verifique la Bobina
Compatibilidade do Refrigerante
Verifique a bobina
Compatibilité du réfrigérant
Vérifier la bobine
4
5
Do Not Bend Enclosing Tube
Flow Follows Arrow
Valve Orientation
No doble el casquillo del Embolo de la Aguja
El Flujo sigue la Flecha
Orientación de Válvulas
Não danifique o tubo de apoio da bobina
Barra Indica Posição do Fluido
Orientação da Válvula
Ne pas plier le tube
L’écoulement doit suivre la flèche
Orientation de la valve
6
T < 250°F (121°C)
7
Coil Electrical Data
8
VAC/Hz
Maximum Amps
Inrush
Holding
VA
Holding
23
24/50
2.0
0.96
24/60
1.6
0.74
18
120/50
0.45
0.21
25
120/60
0.36
0.16
19
208/50
0.19
0.08
17
208/60
0.15
0.06
12
220/50
0.24
0.10
24
240/60
0.19
0.08
19
480/50
0.11
0.05
24
480/60
0.09
0.04
19
Solder Techniques
Coil Installation
Transformer Selection
Técnicas para Soldar
Instalación de la Bobina
Selección del Transformador
Técnicas de Soldagem
Instalação da bobina
Selecione transformador capacidade suficiente
Technique de soudure
l’installation de la bobine
Sélection du transformateur
t
240RA Only
t
t
t
Manual Override
Vástago de Operación Manual
Acionamento manual
Ouverture manuel de la tige
Emerson Climate Technologies and the Emerson Climate Technologies logo are trademarks and service
marks of Emerson Electric Co. © 2004 Emerson Electric Co.
PA-00296 Oct 2006
50 in.-lb.
(5.6 N•m)
EK, ADK & BOK
Filter Drier
2
1
Installation Instructions
3
R-11
R-12
R-22
R-113
R-114
R-115
R-123
R-124
R-125
R-134a
R-401A
R-401B
R-402A
R-402B
R-404A
R-407A
R-407B
R-407C
R-410A
R-500
R-502
R-507
Refrigerant Compatibility
System Location
Compatibilidad con Refrigerantes
Compatibilidade do Refrigerante
Localización en el Sistema
Localização do Sistema
Compatibilité du réfrigérant
Emplacement du système
4
5
SAE
6
ODF
All Positions OK
Remove Seals
Flow Follows Arrow
Todas las Posiciones OK
Remueva los Empaques
El Flujo sigue la Flecha
Todas as Posições São Possíveis
Remova os Tampões
Barra Indica Posição do Fluido
Toute position OK
Enlever les capuchons
L’écoulement doit suivre la flèche
7
SAE
ODF
Installation Precautions
Pressurize And Check For Leaks
Precauciones de Instalación
Presurize y Verifique si existen Fugas
Precauções na Instalação
Pressurize e Verifique Vazamentos
Précautions d’insatallation
Pressuriser et vérifier pour les fuites
Emerson Climate Technologies and the Emerson
Climate Technologies logo are trademarks and
service marks of Emerson Electric Co.
© 2004 Emerson Electric Co.
PA-00292 Jul 2006
Instruction Sheet
PA-00228
January 2008
HMI Moisture Liquid Indicator
HMI Moisture Liquid Indicator
General Information
Only one indicated element is required for all common
refrigerants. This element is highly sensitive to moisture
and will gradually change color in direct relation to an
increase or decrease in the moisture content of the
system. The dry-caution-wet system operating conditions
are then easily determined by matching the element
color with the two colors displayed on the reference label.
Colors change as often as the system moisture content
changes.
MWP - 680 psig
IMPORTANT: 12 hours is recommended after installation
of the Moisture Liquid Indicator before attempting to
determine the system moisture content.
Following installation of a Moisture Liquid Indicator or an
EK filter-drier, the system should be allowed to reach
equilibrium as previously noted. If a caution or wet
system condition is still indicated following this period,
the filter-drier or the replaceable cores should be
replaced. This practice should be continued until the
system has dried and a safe condition is indicated.
Safety Instructions
1. Read all instructions thoroughly. Failure to comply
can result in valve failure, system damage, or
personal injury.
2. The indicator element will indicate an unsafe
condition before installation. This is normal and
simply reflects the room humidity condition.
3. The exclusive fused glass eyepiece in the Moisture
Liquid Indicator provides a clear, wide-angle view of
the liquid refrigerant flow so that bubbles or flash gas
are easily seen. This indicates an insufficient system
charge, low head pressure, insufficient liquid
subcooling or some form of restriction in the liquid
line.
Installation Instructions
1. The Moisture Liquid Indicator may be installed
anywhere in the liquid line and in any position. It is
normally installed downstream from the filter-drier
and immediately ahead of the thermal expansion
valve.
2. Extended cooper connections with bar stock body
permits use of any soft solder or commonly used
brazing alloys. When soldering or brazing, direct the
flame away from the body. Wet rags or chill blocks
must be used when brazing to prevent damaging the
Moisture Liquid Indicator. See Figure 1.
Figure 1
CAUTION: This product is intended for use on all CFC,
HCFC and HFC refrigerants. Do not use on any
unlisted fluid media without prior approval of the
Emerson Climate Technologies Flow Controls
Division Applications Engineering Department. Use
on fluids not listed above could result in deterioration
of the moisture indicator element. Not for use on
refrigerants classified by ASHRAE standard 34 as
Class A1/A2, A2, A3, B2 and B3.
www.emersonflowcontrols.com
11911 Adie Road P.O. Box 411400 St. Louis MO 63141 USA
CUSTOMER SERVICE (314) 569-4666
PS1 Single High and Low Pressure
& PS2 Dual Pressure Refrigeration Controls
Instruction Sheet
PA-00281
October 2007
PS1 Single High and Low Pressure &
PS2 Dual Pressure Refrigeration Controls
THE FLEXIBLE CONTROL
INSTALLATION INSTRUCTIONS–GENERAL
• Emerson Type PS1 Single and PS2 Dual Pressure Controls are
designed for cycling, cutout and alarm applications on the high and
low pressure sides of refrigeration systems.
• Standard pressure ranges and construction are ideally suited to
conventional fluorocarbon and new alternative refrigerants (not
Ammonia).
• High rated single pole double throw (SPDT) switch action on all
PS series controls provides either open or close on pressure
rise (pressure drop) operation to provide maximum application
flexibility. The other switch contact can be used for an alarm or
signal function if desired.
• A convertible reset feature on selected dual pressure controls
allows the user to select either Automatic or Manual Reset
Cutout on the high pressure side.
• PS2 Dual Pressure Controls incorporate 2 independent SPDT
switches with factory installed jumper for conventional
operation with high and/or low pressure cutout alarm or signal,
if desired. Removal of the jumper on dual pressure controls
provides totally independent high and low pressure SPDT
switch operation.
• The parts package includes a lockplate and knob which allows
the user to lock both the range and differential screws or the
range or differential screw with a knob on the unlocked screw.
1. Cover Removal—Loosen cover screw and lift cover up.
2. Mounting—Mount the control in a protected area with the
included angle mounting bracket and screws, or on a flat
surface from the front.
CAUTION: If other screws are used, use 8-32 screws that
do not penetrate into the control more than 1/8’’.
3. Pressure Connections/Capillary /Pressure Lines: Proper
installation of capillary and pressure lines will insure
a trouble–free installation.
• If the control is mounted on the compressor, all lines
must be secured to the compressor so they do not
vibrate independently from the compressor.
• If the control is mounted remote from the compressor
an open coiled vibration loop, 2 to 3 coils, 2 to 3’’
diameter should be provided between the rigid compressor
base and the moving compressor. The lines coming
from the coil should be secured to the base and
compressor so the coil takes all the vibration. Avoid
any “violin string” runs of pressure connection lines.
• Sharp bends or kinks must be avoided in the capillary
or pressure lines. Do not allow the lines to rub and
abrade against any moving surface. Avoid any excessive handling or reforming of the copper lines to
minimize work hardening of the copper.
• A generous loop (3 to 4") should be provided in the
capillary below the control.
Pressure connections should be self-draining. High and
low pressure connections to refrigeration lines should be
on the top or now lower than the side of the line to
minimize refrigerant oil from entering the line, which
slows the control's ability to respond to pressure changes.
Pressure connections to the compressor body should be
slanted to allow the connection to self-drain to the
compressor body.
4. WARNING: Before making any electrical connections,
check with a voltmeter as there could be more than one
power source.
5. Electrical Connections – Make certain the load to be
connected is within the electrical rating of the control.
• All wiring should conform to National Electrical Code
and local regulations. Use 14AWG or larger copper
conductors ONLY.
See Switch Connection Diagrams later in this installation
instructions sheet.
• The terminals are of a clamp design. Loosen the
terminal screw with a Phillips head or small screwdriver,
insert approximately 3/8’’ stripped wire and tighten.
Details of the Emerson "Flexible" Control options
are in the installation Instructions.
SAFETY INSTRUCTIONS
1. Read all Instructions thoroughly. Failure to comply can result
in control failure, system damage or personal injury.
2. Do not use with ammonia or on hazardous or corrosive fluids.
3. Do not install in Hazardous Locations.
4. Disconnect electrical power before installation. Do not reapply
power until control installation is complete, wiring connections
secured and cover is installed.
5. Before making pressure control connections, depressurize
system and make certain lines are at atmospheric pressure.
SPECIFICATIONS – SWITCH RATINGS
Maximum Load
Full Load Amps
Locked Rotor Amps
Horsepower
Pilot Duty
NonInductive
120VAC
240VAC
24 FLA
24 FLA
144 LRA
144 LRA
2 HP
3 HP
720VA
720VA
24 amps
24 amps
www.emersonclimate.com/flowcontrols
11911 Adie Road P.O. Box 411400 St. Louis MO 63141 USA
CUSTOMER SERVICE (314) 569-4666
PS1 SINGLE LOW PRESSURE CONTROL SWITCH CONNECTIONS
SINGLE LOW PRESSURE
SWITCH RESPONSE
LOW PRESSURE CYCLING
OR PUMPDOWN
LOW PRESSURE
CUTOUT/ALARM
TO DEFROST
TERMINATION SOLENOID
UNLOADER
CONTROL
DEFROST
TERMINATION
TO
UNLOADER
PS1 SINGLE HIGH PRESSURE CONTROL SWITCH CONNECTIONS
SINGLE HIGH PRESSURE
SWITCH RESPONSE
HIGH PRESSURE
CUTOUT
CONDENSER
FAN CYCLING
TO CONDENSER
FAN MOTOR
NOTE: In above diagrams, P = Pressure
2
SETTINGS & ADJUSTMENTS
Adjustable Range & Differential Controls
Adjustable Range Fixed Differential Controls
or High Side Dual Pressure
Controls may have external
adjustments (shown), or internal
adjustments. If the control has
internal adjustments, the cover
must be removed to access the
adjustment screws.
Procedure
1) Adjust the Range Screw/Pointer to the desired "High Event"
setting.
2) Adjust the Differential screw to the desired differential.
Low Event = High Event – Differential
✧ Adjustment of the Range Screw changes both high and
low events.
✧ Adjustment of the Differential Screw changes the "Low Event"
only.
Procedure
1) Adjust the Range Screw to the desired "High Event" setting.
Low Event = High Event – Fixed Differential
✧ Adjustment of the Range Screw changes both the high and
low events.
Do not set the Low Event below the lowest allowable event
Low Event – High Event = Differential
Lowest Allowable Events
Low Pressure Control = 27" Hg
High Pressure Control = 50 PSIG
CONTROL SETTING & CHECKOUT
❍ High Pressure Controls – With a high pressure gauge
attached to a high pressure service port, restrict the air flow
thru an air-cooled condenser, or reduce the water flow thru a
water-cooled condenser to cause discharge pressure to rise.
Observe the control's High Event Switch Point and adjust as
necessary. Restore normal cooling and observe the control's
Low Event Switch Point, adjusting as required.
❍ Low Pressure Controls – With an accurate pressure gauge
attached to the suction service valve, slowly close the liquid
line valve to allow the system to pump down.
Observe the control's Low Event Switching Pressure – slowly
open the liquid line to allow suction pressure to rise. Observe
the control's High Event Switching Pressure – adjust the
control range and differential set points as required to
achieve the desired settings.
Before leaving a new control installation, it is best to observe a minimum of 3 cycles to assure proper operation.
LOCKPLATE AND KNOB
KNOB
SCREW
The lockplate can be used to lock:
1. Both Range and Differential Screws. Neither setting can be
adjusted. To use lockplate options 2 or 3, break one end off
the lockplate along the creaseline (see exploded view
diagram at left).
2. Range Screw Only. Range screw is locked so that high event
is fixed – adjusting the differential screw allows low event only
to be changed.
3. Differential Screw Only. Differential is locked so that
differential is fixed – adjusting range screw moves both high
and low event up or down together.
KNOB
FULL LOCKPLATE
LOCKS BOTH
RANGE &
DIFFERENTIAL
Lockplate Installation on Dual Pressure Control
NOTE: If only one screw is
locked, knob can be applied to
unlocked screw.
NOTE: The Range Screw(s) and
Lockplate attachment screw are
cross-drilled to allow the use of a
wire seal.
3
SPECIFICATIONS –
TEMPERATURE & PRESSURE RANGES
CONTROL MOUNTING
Dual Pressure Control Illustrated
Temperature Range -20°F to +140°F
Pressure Range – see control label on box.
Maximum Pressure – During installation and service, the
control's power element should not be exposed to pressure
exceeding those listed in the table below.
Control Range
Maximum Allowable Pressure
24" to 42 PSIG
230 PSIG
15" to 100 PSIG
360 PSIG
90 to 450 PSIG
500 PSIG
SPECIFICATIONS – ENCLOSURE
NEMA CLASS I – Mount the control body in an area
protected from the weather, water or excessive moisture,
dirt, dust and corrosive or explosive atmospheres.
MOUNTING DIMENSIONS
(Back View)
MANUAL OPERATION
The control can be easily manually operated as illustrated below
CONVERTIBLE RESET CONTROLS
The high pressure side of dual pressure controls is
furnished with the convertible reset feature that can be
changed from manual to automatic reset as illustrated and
described below.
❍ With the tab rotated counterclockwise so it does not
touch the manual reset tab, the control will operate
in the manual mode.
With the tab rotated clockwise so it holds the manual
reset tab down fully, the control will operate as an
automatic reset control.
TOP VIEW
(cover off)
SIDE VIEWS
(cover off)
4
MANUAL
RESET
POSITION
AUTO RESET
POSITION
PS2 DUAL PRESSURE CONTROL SWITCH CONNECTIONS
DUAL PRESSURE SWITCH RESPONSE
DUAL PRESSURE SWITCH RESPONSE
Low Pressure Side – Cycling pumpdown or cutout. Close high. Open low.
High Pressure Side – Cutout. Open high. Close low.
ISOLATED HIGH/LOW PRESSURE FUNCTIONS –
JUMPER REMOVED
Isolated Low Pressure Switch can be used in separate
circuit for unloading, low pressure cutout
with time delay or other functions.
CONVENTIONAL HOOKUP WITH ALARM
Low Pressure Side – Cycling pumpdown or cutout. Close high. Open low.
High Pressure Side – Cutout. Open high. Close low.
NOTE: In above diagrams, P = Pressure; LP = Low Side Pressure; HP = High Side Pressure
5
Installation Instructions
Issue Date
P70
June 12, 2006
P70, P72, and P170 Series Controls for
High Pressure Applications
Application
P70, P72, and P170 Series Controls for High Pressure
Applications provide high-side pressure control on
commercial refrigeration and air conditioning
applications.
IMPORTANT:
Except for those models listed
as Refrigeration Pressure Limiting Controls, use the
P70, P72, and P170 Series Controls for High
Pressure Applications only as an operating control.
Where failure or malfunction of a P70, P72, or P170
pressure control could lead to personal injury or
property damage to the controlled equipment or
other property, additional precautions must be
designed into the control system. Incorporate and
maintain other devices such as supervisory or alarm
systems or safety or limit controls intended to warn
of, or protect against, failure or malfunction of the
P70, P72, or P170 pressure control.
x
P70C, P70D, P170C, and P170D type models
with Single-Pole Single-Throw (SPST) Open-High
switch action are the most popular models and are
typically used as high pressure Cutout controls.
The C type models are automatic reset controls.
The D type models have a manual reset lockout
mechanism. Some P70C, P70D, P170C, and
P170D type models are UL Listed as refrigeration
pressure limiting controls. See Table 2 for
standard models available.
x
P70A and P170A type models feature SPST
Open-Low switch action and typically are used for
condenser-fan cycling control.
x
P70 and P170 Series models with Single-Pole
Double-Throw (SPDT), or 4-Wire, 2-Circuit switch
action allow users to install alarm devices or other
control circuits.
x
P72 Series models have a Double-Pole
Single-Throw (DPST) switch with load-carrying
contacts that can provide direct control of 208-240
VAC single-phase motors up to 3 hp, 480 and 600
VAC single-phase noncompressor motors, and
208-220 VAC 3-phase motors up to 5 hp. See
Table 6.
Controls are available in several pressure ranges and
are compatible with most common refrigerants.
© 2006 Johnson Controls, Inc.
Part No. 24-7664-1938, Rev. D
They may also be used on air, water and other
noncorrosive fluid applications. Ammonia compatible
models are also available.
!
CAUTION: Risk of Property Damage.
Mount the pressure control separately from the
electrical cabinet and seal all electrical piping to
prevent ammonia from migrating to electrical
components. Where there may be exposure to
ammonia, use only ammonia compatible control
modules and pressure connections. System
shutdown due to improper adjustment may cause
property damage.
The Manual Reset Lockout mechanism does not
allow the pressure control to automatically reset after
the control has Cutout, providing shutdown capability
for unmonitored equipment. See Manual Reset
Operation.
NEMA 1 enclosures are standard on most models.
NEMA 3R enclosures are also available on quanity
orders.
Dimensions
2-Mounting Holes
10-32 UNF-2B
Thread
3-1/4
83
5/16
8
5/16
8
5/16
8
1-5/16
34
3-1/16
77 4
1/16
101
2
3-1/4
83
1
25
1-1/8
29
3/16 Diameter
1-7/8
5 Mounting Hole 49
3/16
3/16
4
4
2-1/16
53 15/16
24
2-13/16
71
1-1/4
33
15/16
(24)
1-11/16
43
15/16
(24)
3/8 3/16
X
10
5
Diameter
Mounting Hole
7/8 (NEMA 1/2 in.)
22 Conduit Hole
Figure 1: Dimensions for P70, P72, and P170
Pressure Controls with NEMA 1 Enclosures,
in. (mm)
1
www.johnsoncontrols.com
Mounting Holes for
Flat Vertical Surfaces
5/8
16
79
4-1/16
5/8 104
16
15/16
24
5/8
1-1/4
31
1-5/8
41
1/2
12
4-1/16
104
2-11/16
68
70
2-15/16
74
3/16
4 Mounting Holes
5
5/16 Diameter
8
3/4 in. NPSM
Rigid Conduit
Hole
1-9/16
40
1/2
13
3/8
10
25
Figure 2: Dimensions for P70, P72, and P170
Pressure Controls with NEMA 3R Enclosures,
in. (mm)
Mounting
Mount the control in an accessible position, where the
control and pressure connection are not subject to
damage.
Mount the pressure control upright and level. Position
the pressure connection line to allow drainage away
from control bellows. Locate pressure tap points on the
top side of the refrigerant lines to reduce the possibility
of oil, liquids, or sediment accumulating in the bellows,
which could cause control malfunction.
Mount controls with NEMA 1 enclosures on horizontal
or vertical flat surfaces.
Use two screws or bolts through the two outer holes
on the back of the control case to mount the control
directly to a flat, vertical surface.
Use the two inner holes with the Universal Mounting
Bracket (and screws supplied) when mounting the
control to a flat, horizontal surface. See Figure 3.
Mount controls with NEMA 3R enclosures in a level,
upright position with the bellows and conduit
connection facing down. Ensure that all gaskets are in
place. Mounting NEMA 3R enclosures in any position
other than upright and level may trap water in the
enclosure and submerge internal control components.
IMPORTANT:
Use only the mounting screws
supplied with the Universal Mounting Bracket to
avoid damaging internal components. Be careful not
to distort or bend the control case when mounting
the control to an uneven surface. Using other screws
or bending the control case will void the warranty.
2
Use mounting screws
provided. Longer screws
may damage control.
Universal Mounting
Bracket
(Part No. 271-51)
Mount bracket to
horizontal surface.
Figure 3: Mounting the P70, P72, and P170
Pressure Controls with NEMA 1 Enclosures,
in. (mm)
Pressure Connections
P70, P72, and P170 high pressure controls are
connected to the controlled equipment by a capillary
(except ammonia models). These controls are
available with a variety of pressure connection styles.
Follow these guidelines when installing pressure
connection lines:
IMPORTANT:
If these controls are installed on
equipment that contains hazardous or regulated
materials, such as refrigerants or lubricants, you
must comply with all standards and regulations
governing the containment and handling of those
materials.
Avoid Sharp Bends in the Capillary Tube
Sharp bends can weaken or kink capillary tubes, which
may result in leaks or restrictions.
Allow for Slack in the Capillary Tube
Leaving a little slack in the capillary tube helps
dampen mechanical vibration that can weaken or
damage capillary tubes.
Coil and Secure Excess Capillary Tubing
Carefully loop any excess capillary tubing into smooth,
circular coils (approximately 2 to 3 in.[50 to 75 mm]
diameter). Securely fasten the coiled tubing.
Avoid Contact between the Capillary Tubing and
Sharp or Abrasive Objects
Vibration of sharp or abrasive objects in contact with
capillary tubes can result in leaks.
P70, P72 and P170 Series Controls for High Pressure Applications Installation Instructions
Do Not Overtighten Flare Nuts on Pressure
Connection Line Fittings
Overtightening flare connections may damage the
threads on the flare nuts or flare connectors, and may
result in leaks. Do not exceed 9 ft˜lb (12 N˜m) of torque
when tightening brass flare connections.
Avoid Severe Pressure Pulsation at
Pressure Connections
Install pressure connection lines to pressure tap points
away from the compressor to minimize the effects of
pressure pulsation from reciprocating compressors.
IMPORTANT:
After installing the control,
evacuate pneumatic and pressure connection lines
to remove air, moisture and other contaminants in a
manner consistent with applicable environmental
regulations and standards.
L1
L2
Load
M1
Line
L1
L2
Load
M1
Line
Open-High switch action:
opens on pressure rise.
(C and D Models)
Figure 4: Typical Wiring for SPST Switch
(P70A, B, C, D and P170A, C, D Type Models)
L1
L2
Alarm
Load
2
Wiring
P70, P72, and P170 controls for high pressure
applications are available with several switch options
and electrical ratings. Check the label inside the
control cover for model number, switch action, and
electrical rating. See Table 1 for switch actions and
models. See Electrical Ratings.
Check the wiring terminal designations on the control
switch-block, and refer to the following guidelines and
applicable wiring diagrams when wiring the control.
1
3
1 to 3 opens, and 1 to 2 closes
on pressure rise.
Figure 5: Typical Wiring for SPDT Switch
(P70E and F Type Models)
L1
L2
Alarm
Circuit
Power
Alarm
M1
!
WARNING: Risk of Electrical Shock.
Disconnect each of multiple power supplies before
making electrical connections. More than one
disconnect may be required to completely
de-energize equipment. Contact with components
carrying hazardous voltage can cause electric shock
and may result in severe personal injury or death.
Load
Line
Line
M2
Main circuit (Line to M2) opens and auxiliary
circuit (Line to M1) closes on pressure rise.
Figure 6: Typical Wiring for 4-Wire, 2-Circuit
Switch (P70J, K and P170K Type Models)
L1
L2
*L3
IMPORTANT:
Use only the terminal screws
that are supplied with the switch-block. Using other
screws may cause damage to the switch-block and
will void the warranty.
IMPORTANT:
Use copper conductors only.
Make all wiring connections in accordance with local,
national, and regional regulations. Do not exceed the
controls.
Line
M2
Line
M1
Load
Line to M1, and Line to M2 open on pressure rise.
(*L3 is third supply line in 3-phase applications.)
Figure 7: Typical Wiring for DPST Switch
(P72C and D Type Models)
Table 1: Pressure Control Switch Action, Low Events, High Events, Model Types, and Electrical Ratings
Tables References
P70, P72, P170 Series Controls for High Pressure Applications Installation Instructions
3
Switch and Action
Low Event
High Event
Model Types - Electrical
Rating Table References
Single-Pole Single-Throw
(SPST) Open-Low
Cutout
(Opens Line to M1)
Cut In
(Closes Line to M1)
P70A, P70B, P170A
See Table 3.
Single-Pole Single-Throw
(SPST) Open-High
Cut In
(Closes Line to M1)
Cutout
(Opens Line to M1)
P70C, P70D, P170C, P170D
See Table 3.
Single-Pole Double-Throw
(SPDT)
Opens 1 to 2 and
Closes 1 to 3
Closes 1 to 2 and
Opens 1 to 3
P70E, P70F
See Table 4.
4-Wire, 2-Circuits,
1-NO, 1-NC
Open-Low
Cutout
(Opens M2 to Line and
Closes M1 to Line)
Cut In
(Closes M2 to Line and
Opens M1 to Line)
P70G, P70H
See Table 5.
4-Wire, 2-Circuits,
1-NO, 1-NC
Open-High
Cut In
(Closes M2 to Line and
Opens M1 to Line)
Cutout
(Opens M2 to Line and
Closes M1 to Line)
P70J, P70K, P170K
See Table 5.
Double-Pole Single-Throw
(DPST)
Open-Low
Cutout
(Opens M1 to Line and
M2 to Line)
Cut In
(Closes M1 to Line and
M2 to Line)
P72A, P72B
See Table 6.
(DPST)
Open-High
Cut In
(Closes M1 to Line and
M2 to Line)
Cutout
(Opens M1 to Line and
M2 to Line)
P72C, P72D
See Table 6.
Adjustments
Adjustments of the P70, P72, and P170 high
pressure controls vary, depending on the model.
The following guidelines and diagrams illustrate the
procedures for adjusting these controls. Refer to the
product label inside the control cover for model
number and switch action. Refer to Table 1 for
switch action, low event, and high event for the
various control models.
High Pressure Cutout - Automatic Reset
High pressure Cutout controls with automatic reset
have a scaleplate that displays the Cut In and
Cutout setpoints. (See the visible scale on the
control.) Turn the range screw to adjust the Cut In
and Cutout setpoints up or down simultaneously,
while maintaining a constant pressure differential.
Turn the differential screw to adjust (only) the low
event on the left side of the scale (which changes
the differential pressure value).
High Pressure Cutout - Manual Reset Lockout
High pressure Cutout controls with the Manual
Reset Lockout option have a scaleplate that displays
the Cutout setpoint. There is no pointer for the Cut In
setpoint. (See the visible scale on the control.)
Turn the range screw to adjust the Cutout setpoint
on the right side of the scale. There is no differential
4
screw on Manual Reset Lockout models. The differential
pressure value is fixed.
Condenser Fan Cycling - Open-Low Switch Action
Condenser fan cycling pressure controls have a
scaleplate that displays the Cut In setpoint and
Differential setting. (See visible scale on the control.)
Turn the range screw to adjust the Cut In setpoint on the
right side of the scale. Turn the differential screw to
adjust the Differential setting on the left side of the scale
(which changes the Cutout pressure value).
IMPORTANT:
Do not adjust pointers beyond the
highest or lowest indicator marks on the control’s
pressure scale. Adjusting pointers beyond indicator
marks may damage screw threads, may cause
inaccurate control operation, and will void the
warranty.
IMPORTANT:
Use the pressure control settings
recommended by the manufacturer of the controlled
equipment. Do not exceed the pressure ratings of the
controlled equipment or any of its components when
checking pressure control operation or operating the
controlled equipment.
P70, P72 and P170 Series Controls for High Pressure Applications Installation Instructions
Figure 8: Adjusting P70, P72, and P170 Controls for High Pressure Applications
IMPORTANT:
After mounting and wiring
control, attach a reliable set of gauges to the
controlled equipment, and operate the equipment
(at least) three cycles at the pressures necessary
to verify control setpoints and proper equipment
operation.
On equipment with locked-out controls, first determine
and remedy the cause of the lockout, and allow the
sensed pressure to drop at least 70 psig below the
Cutout setpoint. Then, press and release the reset
button on the front of the control to restore operation of
the controlled equipment.
Manual Reset Operation
Pressure controls with the Manual Reset option lock
out when they reach Cutout pressure and must be
manually reset by the user to restart the controlled
equipment. The manual reset mechanism is
trip-free and cannot be overridden by blocking or
tying the reset button down.
P70, P72, P170 Series Controls for High Pressure Applications Installation Instructions
5
Table 2: Standard P70, P72, and P170 Control Models for High Pressure Applications
Model
Number
P70AA-118
P72AA-27
P170AA-118
Switch Action
Range
Psig (kPa)
Pressure
Connection
Maximum Working
Pressure (MWP)
Psi (kPa)
Condenser Fan Cycling Control Models (for Noncorrosive Refrigerants)
36 in. Capillary with
Minimum 35
100 to 400
1/4 in. Flare Nut
(241)
SPST
psig
Maximum 200
Open-Low
(690 to 2758)
(1379)
DPST
100 to 400
Minimum 35
Open-Low
psig
(241)
(690 to 2758)
Maximum 200
1/4 in. Male
SPST
(1379)
Flare Connector
Open-Low
All-Range Control Models (for Noncorrosive Refrigerants)
SPST
Open-High
Minimum 60
(414)
Maximum 150
(1034)
4-Wire, 2-Circuit
Line-M1 Close-High
Line-M2 Open-High
Manual Reset
Lockout
P70CA-2*
P70CA-3*
Differential
Psi (kPa)
475
(3275)
1/4 in. Male
Flare Connector
P70DA-1*
P70KA-1*
36 in. Capillary with
1/4 in. Flare Nut
P72CA-2*
DPST
Open-High
50 to 500
(345 to 3448)
P72DA-1*
P170CA-3*
SPST
Open-High
P170DA-1*
P170KA-1*
4-Wire, 2-Circuit
Line-M1 Close-High
Line-M2 Open-High
Minimum 60
(414)
Maximum 150
(1034)
manual Reset
Lockout
Minimum 60
(414)
Maximum 150
(1034)
Manual Reset
Lockout
525
(3620)
1/4 in. Male
Flare Connector
Ammonia-Compatible Models
P70AA-119
P70CA-5*
SPST
Open-Low
SPST
Open-High
P70DA-2*
50 to 300
50 to 500
(345 to 3448)
Minimum 20
(138)
Maximum 120
(827)
Minimum 60
(414)
Maximum 150
(1034)
Manual Reset
Lockout
1/4 in. SS
Female NPT
Continued on next page . . .
6
P70, P72 and P170 Series Controls for High Pressure Applications Installation Instructions
525
(3620)
Switch Action
Model
Number
Range
Differential
Pressure
Connection
Maximum Working
Pressure (MWP)
High Pressure Control Models for High Pressure Non-corrosive Refrigerants
P70AA-400
P170AA-400
Condenser Fan
Cycling
SPST Opens Low
P70CA-400*
P170CA-400*
100 to 470
(689 to 3241)
Adjustable
35 to 200
(241 to 1379)
200 to 610
(1379 to 4206)
Adjustable
60 to 150
(413 to 1034)
SPST Opens High
P70DA-400*
200 to 610
(1379 to 4206)
P170DA-400*
Manual Reset
Lockout
36 in. Capillary with
1/4 in. Flare Nut
1/4 in. Male Flare
Connector
36 in. Capillary with
1/4 in. Flare Nut
1/4 in. Male Flare
Connector
36 in. Capillary with
1/4 in. Flare Nut
1/4 in. Male Flare
Connector
690
(4757)
*
Models that are UL Listed as refrigeration pressure limiting controls. For models not included in this table, contact the
Refrigeration Application Engineering Group at 1-800-275-5676 for details and availability.
Note:
See Dimensions and Technical Specifications for additional model information including Maximum Working
Pressure.
Electrical Ratings
Table 3: SPST Electrical Ratings (P70A, B, C, D, and P170A, B, C, D Models)
120 VAC
208 VAC
240 VAC
*480 VAC
*600 VAC
Hermetic
Compressor
Single-Phase
Ratings
208/240 VAC
Motor Full-Load
Amperes
24
18.7
17
5
4.8
24
Motor Locked-Rotor
Amperes
144
112.2
102
30
28.8
144
Non-Inductive Amperes
22
22
22
--
--
--
Standard Single-Phase Ratings
Pilot Duty
*
125 VA at 120 to 600 VAC; 57.5 VA at 120 to 300 VDC
Not for compressor motor loads
Table 4: SPDT Electrical Ratings Standard Differential Switch (P70E Models)
Standard Single-Phase Ratings
120 VAC
208 VAC
240 VAC
*277 VAC
Motor Full Load Amperes
16.0
9.2
8.0
7.0
Motor Locked Rotor Amperes
96.0
55.2
48.0
42.0
Non-Inductive Amperes
16.0
16.0
16.0
16.0
Pilot Duty
*
125 VA at 120 to 600 VAC
125 VA at 24 to 600 VAC
Rating for P70EC models only
P70, P72, P170 Series Controls for High Pressure Applications Installation Instructions
7
Table 5: 4-Wire, 2-Circuit Electrical Ratings (P70G, H, J, K, and P170K Models)
Standard Single-Phase Ratings
120
VAC
Line-M2
(Main Contacts)
208
240
277
*480
VAC
VAC
VAC
VAC
Line-M1
(Auxiliary Contacts)
120
208
240
277
VAC
VAC
VAC
VAC
*600
VAC
Motor Full
Load
Amperes
16.0
9.2
8.0
--
5
4.8
6.0
3.3
3.0
--
Motor Locked
Rotor Amperes
96.0
55.2
48.0
--
30
28.8
36.0
19.8
18.0
--
Non-Inductive
Amperes
16.0
9.2
8.0
7.2
--
--
6.0
6.0
6.0
6.0
Pilot Duty (for
both sets of
contacts)
*
125 VA at 24 to 600 VAC; 57.5 VA at 120 to 300 VDC
Not for compressor motor loads
Table 6: DPST Electrical Ratings (P72A, B, C and D Type Models)
Hermetic
Compressor
Ratings
Standard Ratings
120
VAC
1Ø
208
VAC
1Ø
240
VAC
1Ø
208
VAC
3Ø
220
VAC
3Ø
*480
VAC
1Ø
*600
VAC
1Ø
208
VAC
1Ø
240
VAC
1Ø
Motor Full-Load Amperes
24
18.7
17
15.9
15
5
4.8
24
24
Motor Locked-Rotor Amperes
144
112.2
102
95.4
90
30
28.8
144
144
AC Non-Inductive Amperes
24
24
24
24
24
--
--
--
--
DC Non-Inductive Amperes
3
0.5
0.5
0.5
0.5
--
--
--
--
Pilot Duty
*
8
125 VA at 120 to 600 VAC; 57.5 VA at 120 to 300 VDC
Not for compressor motor loads
P70, P72 and P170 Series Controls for High Pressure Applications Installation Instructions
Technical Specifications
Product
P70, P72, and P170 Controls for High Pressure Applications
Switch Action
P70, P170: SPST; 4-Wire/2-Circuit; or SPDT PENN® switch
Pressure Connection
P70, P72 Standard Models
Various connections
available
Ambient Temperature
P70E and P70F: 50 to 104qF (10 to 40qC)
All Other Models: -40 to 140qF (-40 to 60qC)
Case and Cover
NEMA 1 Enclosures: Case is galvanized steel; cover is plated and painted steel.
NEMA 3R Enclosures: Case and cover are plated and painted steel.
Dimensions
(H x W x D)
NEMA 1 Enclosure: 3-1/4 x 4 x 2-1/16 in. (83 x 101 x 53 mm)
NEMA 3R Enclosure: 4-1/16 x 4-1/16 x 2-15/16 in. (104 x 104 x 74 mm)
Approximate
Shipping Weight
Individual Pack (NEMA 1): 2.4 lb (1.08 kg);
Bulk Pack (NEMA 1, multiples of 25 controls): 60 lb (27.2 kg)
Compliance
For information on specific models, contact the Refrigeration Application Engineering Group
at 1-800-275-5676.
Accessories
271-51 Universal Mounting Bracket (supplied with standard controls)
P170 Standard Models
1/4 in. SAE male flare
P72: DPST
Ammonia Compatible Models
1/4 in. stainless steel female
NPT connection
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, contact the Refrigeration Application Engineering Group at 1-800-275-5676. Johnson Controls, Inc. shall not be liable for
damages resulting from misapplication or misuse of its products.
Controls Group
507 E. Michigan Street
P.O. Box 423
Milwaukee, WI 53201
Published in U.S.A.
www.johnsoncontrols.com
P70, P72, P170 Series Controls for High Pressure Applications Installation Instructions
9
Controles para Aplicaciones de Presión Alta
Series P70, P72 y P170
Aplicación
Los Controles de las Series P70, P72 y P170 para
Aplicaciones de Presión Alta proporcionan control de
presión del lado de alta en aplicaciones de refrigeración
comercial y de aire acondicionado.
IMPORTANTE: Con excepción de los modelos listados
como Contoles de Límite de Presión de Refrigeración, el
propósito de los controles de las Series P70, P72 y P170
para Aplicaciones de Presión Alta es de controlar equipo
bajo condiciones de operación normales. Donde un mal
funcionamiento o falla de un control de presión P70,
P72, o P170 pueda resultar en una condición anormal
de operación, que a su vez pueda causar lesión
personal o daño al equipo u otra propiedad, se deben
instalar otros aparatos (controles limitadores o de
seguridad) o sistemas (de alarma o supervisión) para
advertir o proteger contra éstas fallas o mal
funcionamiento del control de presión P70, P72, o P170,
y mantenerse como parte del sistema de control.
x
Modelos del Tipo P70C, P70D, P170C y P170D con
acción del interruptor de Un Polo – Un Tiro (SPST)
con acción Abren en Alta son los modelos más
populares y se usan típicamente como controles de
Desconexión de presión alta. Los modelos de tipo C
son controles con restablecimiento automático. Los
modelos de tipo D tienen un mecanismo de bloqueo
de restablecimiento manual. Algunos modelos del
tipo P70C, P70D, P170C y P170D están Listados por
UL como controles de límite de presión de
refrigeración.
x
Los modelos del tipo P70A y P170A están
disponibles con interruptor SPST con acción abren en
Baja y se usan típicamente para controlar el ciclo del
abanico del condensador.
x
Los modelos de la Serie P70 y P170 tienen un
interruptor de Un Polos-Dos Tiro (SPDT), o de 4
Alambres-2 Circuitos que permiten que los usuarios
instalen aparatos de alarma u otros circuitos de
control.
x
Los modelos de la Serie P72 tienen un interruptor
de Dos Polos-Un tiro (DPST) con contactos para
llevar la carga que puede proporcionar control directo
a motores de monofásicos de 208-240 VCA hasta 3
HP, motores monofásicos de 480 y 600 VCA no de
compresor y motores trifásicos de 208-220 VCA hasta
5 HP. Refiérese a la Tabla 6.
Estos controles están disponibles en varios rangos de
presión y son compatibles con los refrigerantes más
comúnes. También se usan en aplicaciones de aire, agua,
y otros líquidos no corrosivos. También tenemos modelos
compatibles con amoníaco.
!
PRECAUCION:
Riesgo de Daño del
Equipo. El amoníaco es muy corrosivo a componentes
de cobre y latón. En aplicaciones de amoníaco se deben
usar sólo modelos de control y conexiones de presión
compatibles con amoníaco. El control de presión se
debe instalar separadamente del gabinete eléctrico y se
deben sellar todos los conductos eléctricos para evitar
que el amoníaco se filtre a los componentes eléctricos.
El mecanismo de Bloqueo de Restablecimiento Manual
no
permite
que
el
control
se
restablezaca
automáticamente después de llegar al punto de
Desconexión, y proporciona la capacidad de apagado para
equipo no monitoreado. Ver Ajuste de Operación de
Restablecimiento Manual.
Las cajas NEMA 1 son estándares en la mayoría de los
modelos.
Las cajas NEMA 3R también están disponibles.
Dimensiones
2 Orificios
Montaje
2 Orificios
de de
Montaje
Hilos 10/32
rosca
10/32 UN/2B
UN/2B 3-1/4
83
5/16
8
5/16
8
2-13/16
71
3-1/4
83
1
25
1-1/8
29
5/16
8
3/16
5
3/16
4
1-7/8
49
2-1/16
53 15/16
24
1-5/16
34
3-1/16
77 4
1/16
101
2
3/16
4
1-1/4
33
15/16
15/16 (24)
(24)
3/8 3/16
X
10
5
1-11/16
43
Diametro del
Orificio de Montaje
7/8 (NEMA ½ pul.)
Orificio del
Conduit
Conductor
22 Orificio
Figura 1: Dimensiones para los Controles de Presión
P70, P72, y P170 con Cajas NEMA 1, pulg. (mm)
10
P70, P72 and P170 Series Controls for High Pressure Applications Installation Instructions
Orificios de Montaje para
Superficies Planas y Verticales
5/8
16
Utilize los tonillos de
montaje provistos. Los
tornillos mas largos
pueden dañar el control
79
4-1/16
5/8 104
16
15/16
24
1/2
12
4-1/16
104
5/8
2-11/16
68
25
70
3/8
2-15/16
10
74
3/16
4 Oriificios de Montaje
5
5/16 Diametro
8
1-9/16
40
1-1/4
31
1-5/8
3/4pulg. NPSM
Conduit
Orificio del
Conducto
Rígido
1/2
13
Figura 2: Dimensiones para Controles de Presión
P70, P72, y P170 con Cajas NEMA 3R, pulg. (mm)
Instalación
Instale el control en una posición accesible, donde el
control y la línea de conexión de presión no se dañen.
Instale el control de presión en una posición vertical y
nivelada. Coloque la línea de conexión de presión de
manera que se pueda drenar lejos del fuelle del control.
Los puntos de entrada de la presión se deben localizar en
el lado superior de la Lneaa del refrigerante para reducir la
posibilidad de que el aceite, líquidos, o sedimento se
acumulen en el fuelle, que podría causar un mal
funcionamiento del control.
Instale los controles con cajas NEMA 1 en superficies
planas horizontales o verticales.
Use dos tornillos o pernos a través de los dos orificios
exteriores en el reverso de la caja de control cuando se
instale directamente en una superficie plana y vertical.
Soporte de Montaje
Universal
(Número de Parte 271-51)
Instale el soporte a la
superficie horizontal
Figura 3: Instalación del los Controles de Presión
P70, P72 y P170 con Cajas NEMA 1, pulg. (mm)
Conexiones de Presión
Los controles de presión alta P70, P72 y P170 se
conectan al equipo controlado por medio de un capilar
(excepto en modelos para amoníaco). Están disponibles
en diferentes tipos de conexión de presión.
Siga estas pautas al instalar las líneas de conexión de
presión:
IMPORTANTE: Si estos controles se instalan en equipo
que contiene materiales peligrosos o regulados, tal como
refrigerantes o lubricantes, el instalador y usuario deben
observar todas las reglamentaciones que gobiernan el
manejo y contención de esos materiales.
Evite Dobleces Agudos en el Tubo Capilar
Los dobleces agudos pueden debilitar los tubos del
capilar, que resultarían en fugas u obstrucciones.
Permita Soltura en el Tubo Capilar
Dejar el tubo capilar un poco flojo puede ayudar a
amortiguar la vibración mecánica que pueda debilitar o
dañar los tubos capilares.
Enrolle y Asegure el Exceso del Tubo Capilar
Use los dos orificios internos con el soporte de Instalación
Universal (y los tornillos provistos), al instalar el control en
una superficie plana y horizontal. Ver Figura 3.
Cuidadosamente enrolle cualquier exceso de tubo capilar
en bobinas lisas y redondas (aproximadamente 2 pulg. de
diámetro). Sujete el capilar enrollado.
Instale los controles con cajas NEMA 3R en una posición
nivelada y vertical, con el fuelle y la conexión conduit hacia
abajo. Asegúrese que todos los empaques estén en su
lugar. La instalación de cajas NEMA 3R en cualquier
posición otra que vertical y nivelada puede atrapar agua
en la caja y sumergir los componentes internos del control.
Evite el Contacto entre el Tubo Capilar y Objetos
Agudos o Abrasivos
IMPORTANTE: Use sólo los tornillos de montaje
provistos con el soporte de Instalación Universal para
evitar daño a los componentes internos. No tuerza la
caja del control cuando instale el control a una superficie
irregular.
La vibración de los objetos agudos o abrasivos que estén
en contacto con los tubos capilares pueden resultar en
fugas.
No Apriete Demasiado las Tuercas Abocinadas en los
Conectores de la Línea de Conexión de Presión
Si aprieta las conexiones abocinadas demasiado puede
dañar los hilos en las tuercas abocinadas o los conectores
abocinados, y resultar en fugas. No exceda 9 pies-lbs (12
Nm) de torque al apretar las conexiones de latón
abocinadas.
Instrucciones de Instalación de Controles de Series P70, P72, P170 para Aplicaciones de Alta Presión 11
Evite la Pulsación de Presión Severa en las
Conexiones de Presión
L1
L2
Carga
Instale las Líneas de conexión de presión que van a los
puntos de entrada de presión lejos del compresor para
minimizar los efectos de pulsación de presión en los
compresores recíprocos.
IMPORTANTE: Después de instalar el control, vacíe
las líneas del control y conexión de presión de acuerdo
con los reglamentos locales, nacionales y regionales
aplicables para remover el aire, humedad y otros
contaminantes
Alambrado
Los controles P70, P72 y P170 para aplicaciones de
presión alta están disponibles con varias opciones de
interruptor y rangos eléctricos. Revise la etiqueta dentro
de la tapa del control para el número del modelo, acción
del interruptor, y clasificación eléctrica. Ver la Tabla 1
para las acciones de los interruptores y los modelos.
Vea Clasificaciones Eléctricas.
Revise las designaciones de la terminales alambrado en
el interruptor del control, y refiérase a las siguientes
pautas y al diagrama de alambrado aplicable cuando se
instale el control.
M1
Accion de interruptor
abierto - bajo: se abre al
disminuir la presion
(Modelos A y B )
Línea
L1
L2
Carga
M1
Línea
Figura 4: Alambrado Típico para Interruptores SPST
(Modelos P70A, B, C, D y P170A, C, D)
L1
L2
Alarma
Carga
2
1
3
1a 3 abre, y 1 a 2 cierra
al incrementar la presión
Figura 5: Alambrado Típico para Interruptores SPDT
(Modelos P70E y F)
!
ADVERTENCIA:
Riesgo de Descarga
Desconecte la corriente eléctrica antes
de iniciar las conexiones eléctricas para evitar una
posible descarga eléctrica. Puede ser necesario
ejecutar más de una desconexión para desenergizar el
control y el equipo.
Eléctrica.
IMPORTANTE:
Use los tornillos de terminal
provisos con el interruptor. El uso de otros tornillos de
terminal invalidará la garantía y puede dañar el
interruptor.
IMPORTANTE:
Hace todas las conexiones de
la instalación eléctrica de acuerdo con las
reglamentaciones nacionales, locales, y regionales.
Use sólo conductores de cobre. No exceda la
clasificación eléctrica del control.
L1
L2
Corriente del
Circuito de
Alarma
Alarma
M1
Carga
Línea
Línea
M2
Circuito principal (Línea a M2) se abre
y el circuito auxiliar (Línea a M1) se
cierra al incrementar la presión
Figura 6: Alambrado Típico para Interruptores de 4
Alambres - 2 Circuitos (Modelos P70J, K y P170K)
L1
L2
*L3
Línea
M2
Línea
M1
Carga
Línea a M1 y Línea a M2 se abren al incrementar
la presión (L3 es la tercer línea de suministro
en aplicaciones de 3 fases)
Figura 7: Alambrado Típico para Interruptores DPST
(Modelos P72C y D)
12 Instrucciones de Instalación de Controles de Series P70, P72, P170 para Aplicaciones de Alta Presión
Tabla 1: Controles de Presión Sencilla con Acción del Interruptor, Eventos Bajos, Eventos Altos, Tipos de
Modelo, y Tabla de Referencia de Clasificación Eléctrica
Interruptor y Acción
Evento Bajo
Evento Alto
Un Polo-Un Tiro (SPST)
Abre en baja
Un Polo-Un Tiro (SPST)
Abre en alta
Desconexión
(Abre Línea a M1)
Conexión
(Cierra Línea a M1)
Abre 1 a 2 y
Cierra 1 a 3
Desconexión
(Abre M2 a Línea y Cierra
M1 a Línea)
Conexión
(Cierra M2 a Línea y Abre
M1 a Línea)
Desconexión
(Abre M1 a Línea y
M2 a Línea)
Conexión
(Cierra M1 a Línea y
M2 a Línea)
Conexión
(Cierra Línea a M1)
Desconexión
(Abre Línea a M1)
Un Polo-Dos Tiros (SPDT)
4-Alambres, 2-Circuitos,
1 N.A., 1 N.C.
Abre en baja
4-Alambres, 2-Circuitos,
1 N.A., 1 N.C.
Abre en alta
Dos Polos-Un Tiro (DPST)
Abre en baja
(DPST)
Abre en alta
Ajustes
Los ajustes de los controles de Presión Alta P70, P72 y
P170 varían, dependiendo del modelo. Las siguientes
pautas y diagramas ilustran los procedimientos para
ajustar estos controles. Refiérase a la etiqueta del
producto dentro de la tapa del control para el número del
modelo y la acción del interruptor. Refiérase a la Tabla 1
para la acción del interruptor, evento bajo, y evento alto
de los diferentes modelos de control.
Desconexión de Presión Alta – Restablecimiento
Automático
Los controles de Desconexión de Presión Alta con
restablecimiento automático tienen un placa de escala
que despliega los puntos de ajuste de Conexión y
Desconexión. (Ver la escala visible en el control). Gire
el tornillo de rango para cambiar los puntos de ajuste de
Conexión y Desconexión, simultáneamente hacia arriba
y abajo mientras se mantiene un diferencial de presión
constante. Gire el tornillo del diferencial para ajustar
(sólo) el evento bajo en el lado izquierdo de la escala
(que cambia el valor de presión del diferencial).
Desconexión de Presión Alta – Bloqueo del
Restablecimiento Manual
Los controles de Desconexión de Presión Alta con la
opción de Bloqueo de Restablecimiento Manual tienen
un placa de escala que despliega el punto de ajuste de
desconexión. No existe ningún indicador para el punto
de ajuste de Conexión. (Ver la ecala visible en el
control.). Gire el tornillo de rango para cambiar el punto
de ajuste de Conexión en el lado derecho de la escala.
Los modelos de Bloqueo de Restablecimiento Manual
Cierra 1 a 2 y Abre 1 a 3
Conexión
(Cierra M2 a Línea y Abre
M1 a Línea)
Desconexión
(Abre M2 a Línea y Cierra
M1 a Línea)
Conexión
(Cierra M1 a Línea y
M2 a Línea)
Desconexión
(Abre M1 a Línea y
M2 a Línea)
Tipos de Modelos – Tabla
de Referencia de
Clasificación Electrica
P70A, P70B, P170A
Ver Tabla 3.
P70C, P70D, P170C, P170D
Ver Tabla 3.
P70E
Ver Tabla 4.
P70G, P70H
Ver Tabla 5.
P70J, P70K, P170K
Ver Tabla 5.
P72A, P72B
Ver Tabla 6.
P72C, P72D
Ver Tabla 6.
no cuentan con tornillo de diferencial. El valor de la presión
del diferencial está fijo.
Ciclado del Abanico del Condensador – Acción del
Interruptor de Abierto Bajo
Los controles de presión que ciclado del abanico del
condensador tienen un placa de escala que despliega el
punto de ajuste de Conexión y el ajuste del Diferencial. (Ver
la escala visible en el control.) Gire el tornillo de rango para
cambiar el punto de ajuste de Conexión en el lado derecho
de la escala. Gire el tornillo del diferencial para cambiar el
ajuste en el lado izquierdo de la escala (que cambia el valor
de presión de Desconexión).
IMPORTANTE:
No ajuste los indicadores más
allá de las marcas mas alta o mas baja del indicador en la
escala de presión del control. El ajuste de los indicadores
más allá de éstas marcas puede dañar los hilos del tornillo
y resultar en una operación incorrecta del control.
IMPORTANTE: Use los ajustes de control de presión
recomendados por el fabricante del equipo que va a ser
controlado. No exceda las clasificaciones de presión del
equipo controlado ni de cualquiera de sus componentes al
verificar la operación de control de la presión o al operar el
equipo controlado.
Instrucciones de Instalación de Controles de Series P70, P72, P170 para Aplicaciones de Alta Presión 13
Paso 1. Establezca evento alto ajustado el tornillo de rango
derecha para incrementar el punto de DESCONEXION
Contr oles de Desconex ión de Presión Alta: Gire el tornillo hacia la izquierda
Contr oles de Ciclado del Albanico del Condensador: Gire el tornillo hacia la izquierda para disminuir el punto de DESCONEXION.
Indicador de Desconexión
Abre en Alta
(Controles de Desconexión Abierto-Alto
Indicador del Punto de Conexión
(Controles de Ciclado del Abanico del
Condensador)
Tornillo de Rango
Botón de Restablecimiento Manual
(Opción de Bloqueo de
Restablecimiento Manual no
disponible en todos los modelos.)
Tornillo del Diferencial
Escala de Presión Visible
Indicador de CONEXION (Controles de Desconexión
Abre
en Alta Modelos de
Abierto-Alto.
Restabelcimiento Automático solamente)
Indicador de Diferencial (Controles de Ciclado del Abanico del Condensador)
Tornillo de Tapa
Fuelle
derecha
derecha
Figura 8: Ajuste de Controles P70, P72 y P170 para Aplicaciones de Presión Alta
IMPORTANTE: Después de montar y alambrar el
control, instale un juego de medidores confiables al
equipo controlado, y opere el equipo (por lo menos)
tres ciclos bajo las presiones necesarias para verificar
los puntos de ajuste del control y la operación del
equipo apropiada.
Operación de Restablecimiento Manual
Los controles de presión con la opción de Restablecimiento
Manual se bloquean cuando se alcanzan la presión de
Desconexión y deben restablecerse manualmente por el
usuario para reiniciar el equipo controlado. El mecanismo
de restablecimiento manual de movimiento libre y no
puede restablecerse al bloquear o sujetar el botón de
restablecimiento.
En equipo con los controles bloqueados, determine y
resuelva la razón del bloqueo, y permita que la presión
detectada caiga por lo menos 70 psig más abajo del punto
de ajuste de Desconexión. Después, presione y suelte el
botón de restablecimiento que se localiza al frente del control
para restablecer la operación del equipo controlado.
14 Instrucciones de Instalación de Controles de Series P70, P72, P170 para Aplicaciones de Alta Presión
Table 2: Modelos de Control Estándar P70, P72 y P170 para Aplicaciones de Presión Alta
Número del
Modelo
Acción del
Interruptor
Rango
psig (kPa)
Diferencial
psi (kPa)
Conexión de Presión
Modelos de Control de Ciclado del Abanico del Condensador (para Refrigerantes No Corrosivos)
P70AA-118
P70AA-2
SPST
Abre en baja
P72AA-27
DPST
Abre en baja
P170AA-118
SPST
Abre en baja
100 a 400 psig
(690 a 2758)
Mínimo 35 (241)
Máximo 200 (1379)
0 a 150 psig
(0 a 1034)
Mínimo 12 (83)
Máximo 70 (482)
100 a 400 psig
(690 a 2758)
Mínimo 35 (241)
Máximo 200 (1379)
Capilar de 36 pulg.
con Tuerca Abocinada
de 1/4 pulg.
Conector Abocinado
Macho de 1/4 pulg.
Modelos de Control de Todo Rango (para Refrigerantes No Corrosivos)
P70CA-2*
P70CA-3*
Mínimo 60 (414)
Máximo 150 (1034)
SPST
Abre en Alta
Conector Abocinado
Macho de 1/4 pulg.
P70DA-1*
P70KA-1*
P72CA-2*
P72DA-1*
P170CA-3*
P170DA-1*
P170KA-1*
4-Alambres,
2-Circuitos
Línea-M1 Cierra en
Alta
Línea-M2 Abre en
Alta
Restablecimiento
Manual
50 a 500 psig
(345 a 3448)
DPST
Abre en Alta
Capilar de 36 pulg.
con Tuerca Abocinada
de 1/4 pulg.
Mínimo 60 (414)
Máximo 150 (1034)
Restablecimiento
Manual
Mínimo 60 (414)
Máximo 150 (1034)
SPST
Abre en Alta
4-Alambres,
2-Circuitos
Línea-M1 Cierra en
Alta
Línea-M2 Abre en
Alta
Restablecimiento
Manual
Conector Abocinado
Macho de 1/4 pulg.
Modelos Compatibles con Amoníaco
P70AA-119
P70CA-5*
P70DA-2*
SPST
Abre en Baja
SPST
Abre en Alta
50 a 300 psig
(345 a 2068)
50 a 500 psig
(345 a 3448)
Mínimo 20 (138)
Máximo 120 (827)
Mínimo 60 (414)
Máximo 150 (1034)
NPT Hembra de Acero
Inoxidable de 1/4 pulg.
Restablecimiento
Manual
* Modelos que son listados por UL como controles de límite de presión de refrigeración.
Nota: Ver Dimensiones y Especificaciones Técnicas para mayor información del modelo que incluye la Presión
Operacional Máxima y las clasificaciones de la Máxima Sobrepresión.
Instrucciones de Instalación de Controles de Series P70, P72, P170 para Aplicaciones de Alta Presión
15
Clasificaciones Eléctricas
Tabla 3: Clasificaciones Eléctricas SPST (Modelos P70A, B, C, D, y P170A, B, C, D)
Clasificaciones de Motores Monofásicos Estándares
Clasificaciones
para Compresor
Hermético
Monofásico
208/240 VCA
120 VCA
208 VCA
240 VCA
*480 VCA
*600 VCA
Amperios del Motor con
Carga Completa
20
18.7
17
5
4.8
20
Amperios del Motor con
el Rotor Bloqueado
120
112.2
102
30
28.8
120
Amperios No
Inductivos
22
22
22
--
--
125 VA de 120 de 600 VCA; 57.5 VA de 120 a 300 VCD
Servicio Piloto
*
--
No es para cargas de motores de compressores.
Tabla 4: Clasificaciones Eléctricas del Interruptor de Diferencial Estándar (Modelos P70E)
Clasificaciones de Motores Monofásicos Estándares
120 VCA
208 VCA
240 VCA
277 VCA*
Amperios del Motor con
Carga Completa
16.0
9.2
8.0
7.0
Amperios del Motor con el
Rotor Bloqueado
96.0
55.2
48.0
42.0
Amperios No Inductivos
16.0
16.0
16.0
16.0
Servicio Piloto
*
125 VA de 24 hasta 600
VCA
125 VA de 120 hasta 600 VCA
Clasificaciones para modelos P70EC solamente
Tabla 5: Clasificaciones Eléctricas de 4 Alambres – 2 Circuitos (Modelos P70G, H, J, K, y P170K)
Clasificaciones de Motores Monofásicos Estándares
120
VCA
Línea-M2
208
VCA
(Contactos Principales)
240
277
*480
*600
VCA
VCA
VCA
VCA
Línea-M1 (Contactos Auxiliares)
120
208
240
277
VCA
VCA
VCA
VCA
Amperios del Motor
con Carga Completa
16.0
9.2
8.0
--
5
4.8
6.0
3.3
3.0
--
Amperios del Motor
con el Rotor
Bloqueado
96.0
55.2
48.0
--
30
28.8
36.0
19.8
18.0
--
Amperios No
Inductivos
16.0
9.2
8.0
7.2
--
--
6.0
6.0
6.0
6.0
Servicio Piloto (para
ambos juegos de
contactos
*
125 VA de 24 a 600 VCA; 57.5 VA de 120 a 300 VCD
No para cargas de motor de compresor
16 Instrucciones de Instalación de Controles de Series P70, P72, P170 para Aplicaciones de Alta Presión
Tabla 6: Clasificaciones Eléctricas DPST (Modelos P72A, B, C y D)
Rangos del
Compresor
Hermético
Clasificaciones Estándares
120
VCA
1Ø
208
VCA
1Ø
240
VCA
1Ø
208
VCA
3Ø
220
VCA
3Ø
*480
VCA
1Ø
*600
VCA
1Ø
208
VCA
1Ø
240
VCA
1Ø
Amperios del Motor con Carga
Completa
24
18.7
17
15.9
15
5
4.8
24
24
Amperios del Motor con el Rotor
Bloqueado
144
112.2
102
95.4
90
30
28.8
144
144
Amperios No Inductivos CA
24
24
24
24
24
--
--
--
--
Amperios No Inductivos CD
3
0.5
0.5
0.5
0.5
--
--
--
--
Servicio Piloto
*
125 VA de 120 a 600 VCA; 57.5 VA de 120 a 300 VCD
No es para cargas del motor de compresor
Especificaciones Técnicas
Producto
Acción del Interruptor
Conexión de Presión
Máxima Presión
Operacional
Máxima Sobrepresión
(non-recurrente)
Condiciones
Ambientales
Caja y Tapa
Controles P70, P72 y P170 para Aplicaciones de Alta Presión
P70, P170: SPST; 4-Alambres/2-Circuitos; o Interruptor
SPDT PENN®
P72: DPST
Modelos Estándares P70,
P72 disponibles con varias
conexiones.
Modelos Estándares
Modelos Compatibles con
P170, conector macho
Amoníaco 1/4 pulg. NPT
abocinado de 1/4 pulg.
conexión hembra de acero
SAE
inoxidable
para rango
para rango
para rango
para rango 50-500
0-150 psig: 150 psig 50-300 psig:
100-400 psig:
psig: 500 psig (3448
(1034 kPa)
300 psig (2068 kPa) 400 psig (2758 kPa) kPa)
para rango
para rango
para rango
para rango 50-500
0-150 psig:
50-300 psig:
100-400 psig:
psig: 525 psig (3620
525 psig (3620 kPa) 400 psig (2758 kPa) 475 psig (3275 kPa) kPa)
Tipos P70E y P70F: 50 a 104qF (10 a 40qC)
Todos los Otros Modelos: -40 a 140qF (-40 a 60qC)
Caja NEMA 1: Caja de acero galvanizado; tapa de acero cromado y pintado.
Caja NEMA 3R: Caja y tapa de acero cromado y pintado.
Dimensiones
(A x A x P)
Caja NEMA 1: 3-1/4 x 4 x 2-1/16 pulg. (83 x 101 x 53 mm)
Caja NEMA 3R: 4-1/16 x 4-1/16 x 2-15/16 pulg. (104 x 104 x 74 mm)
Peso de Embarque
Aproximado
Empaque Individual (NEMA 1): 2.4 lb (1.08 kg);
Empaque Múltiple (NEMA 1, multiplos de 25 controls): 60 lb (27.2 kg)
Listados de Agencias
Accesorios
Para información sobre modelos especificos, contacte al Grupo de Ingeniera de Aplicación
de Refrigeración a 1-800-275-5676.
Soporte de Instalación Universal 271-51 (provisto con controles estándares)
Las especificaciones del desempeño son nominales y de acuerdo a estándares aceptables de la industria. Para aplicación en condiciones que
estén fuera de éstas especificaciones, contácte al Grupo de Ingeniería de Aplicación de Refrigeración al 1-800-275-5676. Johnson Controls, Inc.
no será responsable de daños que resulten de una aplicación incorrecta o un mal uso de su productos.
Controls Group
507 E. Michigan Street
P.O. Box 423
Milwaukee, WI 53201
Publicado en EE.UU.
www.johnsoncontrols.com
Instrucciones de Instalación de Controles de Series P70, P72, P170 para Aplicaciones de Alta Presión
17
B Series
Balanced-Port Thermal Expansion Valves
Instruction Sheet
PA-00266
June 2006
Installation & Service Instructions
Safety Instructions
Installation Instructions
Warning : Before opening any system, make sure the pressure
1. Warning: Before opening any system, make sure the pressure
in the system is brought to and remains at atmospheric pressure.
Use approved refrigerant recovery methods when necessary.
Failure to comply can result in system damage and/or personal
injury.
in the system is brought to and remains at atmospheric pressure.
Use approved refrigerant recovery methods when necessary.
Failure to comply can result in system damage and/or personal
injury.
1, Read installation instructions thoroughly . Failure to follow
instructions may result in valve failure, system damage, or personal
injury.
2. Valves may be installed in any position, but should be located
as close as possible to the distributor or evaporator inlet.
2. Do not use on service conditions or fluids not specifically
cataloged, without prior written approval of the Emerson Climate
Technologies Engineering Department. Use of Thermal valves on
applications not specifically cataloged can result in valve failure
and/or system damage.
3. Protect against excessive vibration, it may cause a tubing break,
which will cause valve failure and/or personal injury
4. On valves with solder connections, wrap wet cloths around
valve. Direct torch away from valve to avoid valve damage.
5. Do not exceed maximum working pressure of 450 psig. - excess
internal pressure could cause damage to diaphragm, resulting in
valve malfunction.
6. Do not exceed maximum working temperature (see Table 1) excess temperatures could cause internal damage, resulting in
valve malfunction.
3. Foreign matter in the Thermal valve may cause diaphragm
failure, flooding, or starving of the valve. Use of an Emerson liquid
line filter-drier is strongly recommended.
4. Valves are factory set to a specific superheat. If
adjustment is needed, refer to Superheat Adjustment
section for proper procedure . Improper adjustment of
superheat can result in system damage.
5. Proper valve sizing is important. An oversized valve may result
in erratic control. An undersized valve considerably reduces
system capacity.
6. Be sure valve is installed with its
flow arrow corresponding to the flow
direction thru the piping.
www.emersonflowcontrols.com
11911 Adie Road P.O. Box 411400 St. Louis MO 63141 USA
CUSTOMER SERVICE (314) 569-4666
page 2
B Series
Balanced-Port Thermal Expansion Valves
Instruction Sheet
PA-00266
June 2006
Installation & Service Instructions
7. For BA(E)S, BN(E)S Valves, remove strainer nut and strainer
before brazing. Replace strainer nut.
11. Connect one end of the external equalizer line to the valve.
Connect the other end to the suction line slightly downstream from the
remote bulb location and positioned so that it cannot siphon oil from
the suction line.
12. Check for leaks, sufficient system refrigerant charge, and be sure
no flash gas is present before attempting to check valve operation.
13. The expansion valve must be free of all contaminants - install an
Emerson Climate Technologies liquid line filter-drier before the valve.
NOTE:For improve the quality of our valve, we use a neopreon Oring
in the strainer nut, the brazing heat would produce extreme damage
in the piece.
8. Installing connections to valve. an valves
Measuring Superheat
1. Determine the suction pressure with an accurate gauge at the
evaporator outlet.
with solder connections, wrap wet cloths
around valve. to prevent valve damage
while brazing. Direct torch away from
valve.
9. To replace strainer, remove strainer nut and install new strainer.
Replace nut and torque nut to 50 inch pounds.
10. Attach the remote bulb to the suction line as close to the
evaporator outlet as possible. Position the bulb at the 4 or 8 o’clock
position. Clean surface of suction line where the remote bulb is
to be attached, then securely fasten the bulb with straps provided.
If the remote bulb can be affected by the surrounding ambient, then
the bulb should be insulated with a material that will not absorb water.
On self-contained systems, the suction pressure may be read at the
compressor suction connection
2. From refrigerant pressure-temperature tables, determine saturation
temperature at observed suction pressure (TEMP p).
3. Measure temperature of suction gas at Thermo Valve remote bulb
location (TEMPT).
4. Subtract saturation temperature (read from tables in step 2) from
temperature measured in step 3, the difference is the superheat of
the suction gas.
www.emersonflowcontrols.com
11911 Adie Road P.O. Box 411400 St. Louis MO 63141 USA
CUSTOMER SERVICE (314) 569-4666
page 3
B Series
Balanced-Port Thermal Expansion Valves
Instruction Sheet
PA-00266
June 2006
Installation & Service Instructions
Superheat Adjusment
Dimesional Data
Emerson’s Thermal valves are factory set to a specific superheat however, the superheat should be adjusted for the application. To
adjust the valve to other superheat settings:
1. Remove the seal cap from bottom of valve.
2. Turn the adjustment screw clockwise to increase superheat and
counterclockwise to decrease superheat.
One complete 360* turn changes the
superheat approximately 3-4°F, regardless
of the refrigerant type. As much as 30
minutes may be required for the system to
stabilize after the adjustment is made.
3. Replace and hand-tighten seal cap.
Caution: There are 10 turns on the adjustment stem. When adjusting
superheat setting - when stop is reached, any further
turning adjustment will damage valve.
Nomenclature Selection
www.emersonflowcontrols.com
11911 Adie Road P.O. Box 411400 St. Louis MO 63141 USA
CUSTOMER SERVICE (314) 569-4666
page 4
B Series
Balanced-Port Thermal Expansion Valves
Instruction Sheet
PA-00266
June 2006
Installation & Service Instructions
Application & Operation
Dimesional Data
The BA(E) valve is currently replacing conventional TXV’s on air
conditioning and refrigeration systems with any combination of the
following system operating conditions:
1. Widely varying evaporator loads
2. Widely varying head pressures
3. Widely varying pressure drop available
across the thermostatic expansion valve and
refrigerant distributor
4. Fluctuating or extremely low liquid temps.
Severe conditions are those which drastically increase a conventional
expansion valve’s maximum capacity: high head pressures for
example, also, low liquid temperatures that would be experienced on
a system with mechanical sub coolers during summer operation.
BA(E) high system performance is possible because the large
diaphragm allows the valve to operate with the valve pin controlling
very close to the seat. This provides, stable control at minimum
changes in stroke, enabling a large port to handle small loads.
Problems can occur with refrigeration systems during both high and
low ambient conditions when the condensing temperature is allowed
to follow the ambient. As the evaporator temperature remains
reasonably constant, this results in extreme pressure drop changes
across the valve. These pressure drop changes can result in a
conventional valve not maintaining a constant superheat at the
evaporator outlet. These superheat changes can result in the
evaporator starving in low ambient conditions and flooding in the
higher ambient, depending on the valve design. Another variable
factor for this situation is how low the head pressure is allowed to
decrease. This of course depends on whether heat reclaim is utilized
for heating purposes, or if hot gas will be used for evaporator defrost.
Emerson’s BA(E) Thermal Expansion Valves are
designed to meet the specific demands of refrigerated
display cases, reach-in & walk-in coolers and freezers,
and commercial applications ranging from medium
(+50°F)to low(-50°F) temperature, with proper charge.
www.emersonflowcontrols.com
11911 Adie Road P.O. Box 411400 St. Louis MO 63141 USA
CUSTOMER SERVICE (314) 569-4666
Instruction Sheet
PA-00260
June 2007
TRAE+ Balanced Port Thermal Expansion Valve Cage
TRAE+ Balanced Port Thermal Expansion Valve Cage
SAFETY INSTRUCTIONS
CAGE REPLACEMENT INSTRUCTIONS
Warning: Before opening any system, make sure the
pressure in the system is brought to and remains at
atmospheric pressure. Use approved refrigerant recovery
methods when necessary. Failure to comply can result in
system damage and/or personal injury.
1. Read installation instructions thoroughly. Failure to
follow instructions may result in valve failure, system
damage, or personal injury.
2. Do not use on service conditions or fluids not
specifically cataloged, without prior written approval
of the Emerson Climate Technologies Flow Controls
Division Applications Engineering Department. Use of
thermal expansion valves on applications not
specifically cataloged can result in valve failure and/
or system damage.
3. Protect against excessive vibration. If may cause a
tubing break which will cause valve failure and/or
personal injury.
4. Do not exceed maximum working pressure of 450
psig - excess internal pressure could cause damage
to diaphragm, resulting in valve malfunction.
5. Do not exceed maximum working temperature (see
table 1) - excess temperature could cause internal
damage, resulting in valve malfunction.
6. Warning: Do not place open flame on or near remote
bulb.
1.
NOMINAL CAPACITIES
12.
13.
R-134a
Valve Type
TRAE9M*
TRAE13M
TRAE14M
TRAE22M
TRAE30M
R-22/R-407C
Valve Type
TRAE10H*
TRAE15H
TRAE20H
TRAE30H
TRAE40H
R-507/R-404A
Valve Type
TRAE8*
TRAE12
TRAE14
TRAE20
TRAE30
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Cage Kit
KT20289
KT20290
KT20291
KT20292
KT20293
Before removing superheat adjustment assembly,
make sure system is at atmospheric pressure using
EPA approved methods. Failure to comply can result
in system damage or personal injury.
Remove superheat adjustment assembly, superheat
spring and spring guide. Care must be taken not to
damage threads or surface area.
Remove spool and stem assembly.
Using KT20294 toll provided, remove seat turning in a
counter clockwise direction.
Remove spool and stem assembly from new cage
before installing seat in valve.
Before installing seat, ensure there is no foreign
material inside valve or on seat.
Lightly oil all seals with same type oil that is in
system.
Carefully install seat taking care not to damage seals
or threads. Torque cage 60 to 64 inch pounds.
Reinstall spool and stem assembly.
Reassemble spring guide superheat spring and
adjustment assembly. Torque assembly 400 to 425
inch pounds.
Before restarting system, turn adjustment stem
counter clockwise until it stops. Then turn clockwise 6
full turns. This will be close to factory superheat
setting.
Leak check valve.
Adjust superheat to manufacturers’ recommendations.
POWER ELEMENT
SEAT (K)
* Select correct charge code.
Cage Wrench KR20294
Kit Includes:
• Cage
• Cage Wrench
• Instruction Sheet
SPOOL AND
STEM
SPRING GUIDE
TABLE 1
Maximum Dehydration Temperature °F
REFRIGERANT
R12
R22
R502
THERMOSTATIC CHARGE
C
Z
WMOP/CA
190
250
250
160
185
250
150
170
250
SPRING
ADJUSTING STEM
ASSEMBLY
SPOOL AND STEM ASSEMBLY SEAT
This Table refers to the maximum dehydration
temperatures when the bulb and valve body are
subjected to the same temperature. On L, C, and Z
charges, 250°F maximum valve body temperature is
permissible (if the bulb temperature) does not
exceed those shown in the table.
www.emersonflowcontrols.com
11911 Adie Road P.O. Box 411400 St. Louis MO 63141 USA
CUSTOMER SERVICE (314) 569-4666
REPLACEMENT PARTS
Part #
Description
X-28458
Power Assembly
KT20294
Cage Removal Tool
27676-1
Seal Cap
MEASURING SUPERHEAT
SUPERHEAT ADJUSTMENT
1.
Emerson thermal expansion valves are factory set to a
specific superheat - however, the superheat should be
adjusted for the application. To adjust the valve to other
superheat settings:
1. Remove the seal cap from bottom of valve.
2. Turn the adjustment screw clockwise to increase
superheat and counterclockwise to decrease superheat.
One complete 360° turn changes the superheat approximately 3-4°F, regardless of the refrigerant type. As
much as 30 minutes may be required for the system to
stabilize after the adjustment is made.
3. Replace and hand-tighten seal cap.
Caution: There are 12 turns on the adjustment stem. When
adjusting superheat setting - when stop is reached, any
further turning adjustment will damage valve.
3.
4.
TEMPT
40°
–
–
TEMPP = SUPERHEAT
33°
=
7°
69 PSIG = 40°F
59 PSIG = 33°F
59 PSIG = 40°F
FIGURE 2
EXTERNAL EQUALIZER
2.
Determine the suction pressure with an accurate gauge
at the evaporator outlet (see P in figure 2). On selfcontained systems, the suction pressure may be read at
the compressor suction connections.
From refrigerant pressure-temperature tables, determine
saturation temperature at observed suction pressure
(TEMPP).
Measure temperature of suction gas at thermal expansion valve remove bulb location (TEMPT).
Subtract saturation temperature (read from tables in step
2) from temperature measured in step 3; the difference
is the superheat of the suction gas.
T
P
40°F
59 PSIG
TX6
Thermo Expansion Valves
Technical Data
ALCO’s TX6 series of Thermo-Expansion Valves are
designed for air conditioning, chillers, rooftops, close control,
A/C transportation, heat pumps, industrial cooling process and
refrigeration applications. The TX6 is ideal for those
applications requiring hermetic / compact size combined with
stable and accurate control over wide load and evaporating
temperature ranges.
Features
•
Balance port construction for constant superheat
operation over a wide application range under variation
of condensing pressure
•
Six sizes up to 97 kW (R410A)
•
Compact size
•
Hermetic design
•
Brazing connections with straight through configuration
•
Long life laser welded stainless steel power element
resists corrosion
•
Large diaphragm eliminates disturbances to the valve
and provides smoother and consistent valve control
•
Tailored charges for different applications
•
External equalizer
•
External superheat adjustment
•
Brass body
TX6
Introduction
Construction
Thermo-Expansion Valves control the superheat of refrigerant
vapour at the outlet of the evaporator. They act as a throttle
device between the high and low pressure sides of refrigeration
system and ensure the rate of refrigerant flow into the
evaporator exactly matches the rate of evaporation of liquid
refrigerant. Thus the evaporator is fully utilized and no liquid
refrigerant may reach the compressor.
The valve body is made from brass, the connections are in a
straight through configuration. The diaphragm movement is
transferred to a steel metering pin. When the charge pressure
increases, the diaphragm will be deflected downward and this
motion will be transferred to the pin. The pin will then lift from
seat and the liquid can pass through orifice.
The pin design gives the balance port feature. Balance port
design will eliminate the undesirable variable influence of inlet
pressure i.e. condensing pressure during different air ambient
temperature in systems with aircooled condenser.
The balance port design is only available in one direction as
arrow indicates on the valve. This means, when the valve
operates as Bi-flow in heat pump applications, the advantage of
balance port is given in cooling or heating mode.
A spring opposes the force underneath the pin and its tension
can be adjusted by the external stem. The static superheat can
be adjusted by rotation of the stem. Static superheat increases
by turning the stem clockwise and decreased by turning the
stem counter clockwise.
When the actual superheat is higher than the setpoint, thermo
expansion valve feeds the evaporator with more liquid
refrigerant. Likewise, the valve decreases the refrigerant flow to
the evaporator when the actual superheat is lower than the set
point.
TX6__35011_EN_R06.doc
1 / 12
17.03.2008
TX6
Thermo Expansion Valves
Description of bulb charges
The application ranges of Thermo expansion valves are
heavily influenced by the selected charge.
Liquid charges
The behaviour of Thermo-Expansion Valves with liquid
charges is exclusively determined by temperature changes at
the bulb and not subject to any cross-ambient interference.
They feature a fast
response time and thus react quickly in the control circuit.
Liquid charges cannot incorporate MOP functions. The
maximum bulb temperatures is limited and shall not exceed the
values, shown in the following table:
Table 1:
Refrigerant/Charge
Performance of TXV with MOP function, gas charge
Static superheat
MOP
Working range
Evaporating
temperature/
pressure
Valve operates as superheat control in normal working range
and operates as pressure regulator within MOP range.
Maximum bulb temperature
R 134a / M0
R 407C / N0
R 22 / H0
Practical hints:
Superheat adjustments influence the MOP:
•
Increase of superheat: decrease of MOP
Decrease of superheat: increase of MOP
•
88°C
71°C
71°C
Gas charges
The behaviour of Thermo-Expansion Valves with gas charges
will be determined by the lowest temperature at any part of the
expansion valve (power assembly, capillary tube or bulb). If any
parts other than the bulb are subject to the lowest temperature,
malfunction of the expansion valve may occur (i.e. erratic low
pressure or excessive superheat). ALCO TX6 with gas charges
always feature MOP functions and include ballasted bulbs.
Ballast in the bulb leads to slow opening and fast closure of the
valve. Maximum bulb temperature is 120°C.
MOP (Maximum Operating Pressure)
MOP functionality is somewhat similar to the application of a
crankcase pressure regulator.
Evaporator pressures are limited to a maximum value to protect
compressor from overload conditions.
MOP selection should be within maximum allowed low pressure
rating of the compressor and should be at approximately 3 K
above maximum evaporating temperature.
Table 2: MOP value, gas charge
MOP
Upper limit of evaporating temperature
°C
Code
bar
°C
R407C
R22
R 410A
R134a
N1
H1
M1
Z1
6.9
6.9
3.8
12.1
+17
+15
+14
+16
+14
-
+12
-
+14
+10
Note: All pressures are gauge pressure
TX6__35011_EN_R06.doc
2 / 12
17.03.2008
TX6
Thermo Expansion Valves
Heat pump applications
There are several ways to apply an expansion valve in a heat pump. The following figures are showing the most popular
applications:
1) System with two expansion valves, single Bi-flow filter
dryer and two check valves
3) System with single Bi-flow expansion Valve and Alco
suction filter dryer ASD
Four way valve
Four way valve
Outdoor
coil
Outdoor
coil
Check valve
BFK
Bi-flow
ASD
TX6
Compressor
Compressor
Accumulator
Indoor coil
Accumulator
Indoor coil
Check valve
This type of system employs two expansion valves and two
check valves. In this type of application, it is recommended
to locate the external equalizer and bulb on the suction line
between reversing valve and suction accumulator (if
available) or compressor as shown.
Bi-flow application
For application of TX6 in Bi-flow as single TXV in heat pumps,
the following subjects need to be considered:
2) System with single Bi-flow expansion Valve and Alco Biflow filter dryer(s) BFK
•
TX6 is balance port only in normal flow direction but not in
reverse flow direction
•
Inlet pressure in reverse flow act on valve pin as closing
force. This effect is more significant at higher inlet
pressure and lower evaporating temperature
Four way valve
Outdoor
coil
•
This effect will prevent the valve from desired opening
percentage in reverse flow dependant to port size of valve,
inlet pressure and evaporating temperature
Based on the above facts, it is necessary to evaluate the
selection of TX6 in Bi-flow application. The following curves and
table are as guidance for proper selection of TX6 in BI-flow
application.
BFK
Bi-flow
TX6
Compressor
Accumulator
Indoor coil
TX6-N07, Static superheat shifting
Inlet pressure: 8 bar
TX6-N02, Static superheat shifting
Inlet pressure: 8 bar
8
20
Normal flow
Reverse flow
4
2
Reverse flow
12
8
4
0
-30
Normal flow
16
SS, K
SS, K
6
-25
-20
-15
-10
-5
0
5
10
15
0
-30
To, °C
TX6__35011_EN_R06.doc
-25
-20
-15
-10
-5
0
5
10
15
To, °C
3 / 12
17.03.2008
TX6
Thermo Expansion Valves
Size of valve
Small port size
(TX6-..2 /..3)
Condition in reverse flow
High or low operating inlet
pressure
High evaporating
temperature
Low evaporating
temperature
High or low operating inlet
pressure
Large port size
(TX6-..4 /..5 /..6 /..7) Higher evaporating
temperature
Impact on operation of
valve
Application of
valve in Bi-flow
Consideration for
performance improvement
Negligible
Negligible
Recommended
None
This needs to be
evaluated *
This needs to be
evaluated *
-
Slightly increase of
superheat
Increase of superheat
Increase of superheat
-
Lower evaporating
temperature
Significant increase of
superheat
Not
recommended
Lower system capacity in
reverse vs. normal flow
Reduction of compressor
capacity
Oversized valve
No solution
*) During system design and prototype unit test.
Other Subjects to be considered in Bi-flow applications:
•
In an air to water (liquid) systems, it may require a receiver
in order to hold excessive refrigerant in one mode of
operation
•
Do not install the Bulb of TXV between accumulator and
compressor
•
It is possible to install several Bi-flow filter dryers in
parallel in system with larger capacity
•
It is important to provide proper refrigerant distribution
through liquid distributor at the inlet of evaporator due to
distance between TXV and distributor
Static superheat setting
The factory setting of a TX6 is made with the valve pin just
starting to move away from the seat. The superheat increment
necessary to get the pin ready to move is called static
superheat (SS). An increase of superheat over and beyond the
static superheat (factory setting) is necessary for the valve pin
to open to its rated capacity. This additional superheat is known
as gradient or opening superheat (OS).
The working superheat (WS), which can be measured in the
field, is the sum of static superheat and opening superheat.
The opening superheat of TXV varies if the selected valve
operates at higher or lower capacities than the rated capacity. It
is highly recommended to select the valve according to the
rated capacity. Using reserve capacity leads to larger opening
superheat and longer pull down time during start-up or after
defrost.
Selecting a larger valve than required in a system may lead to
smaller opening superheat and/or hunting of TXV.
Capacity
Qr = Reserve capacity
Qmax.
Qr
Qn
Superheat (K)
SS
OS
WS
Qr ≈ 15% for TX6-..2/3/4/5/6
Qr ≈ 10% for TX6-..7
TX6__35011_EN_R06.doc
4 / 12
17.03.2008
TX6
Thermo Expansion Valves
Standard superheat setting
Charge
Refrigerant/
charge code
Refrigerant
M0
R 134a
Liquid (no MOP)
N0
R 407C
H0
R 22
MOP 3.8 bar
M1
R 134a
MOP 6.9 bar
N1
R 407C
MOP 12.1 bar
H1
R 22
Z1
R 410A
Setting
Given
Bulb temperature
Nominal static
superheat (SS)
Nominal opening
superheat (OS*)
0°C
3.3 K
3K
*) The given opening superheats valid when the capacity of selected valve is equal to the capacity of system at
design / operating conditions. Note : All pressures are gauge pressure.
Nomenclature and identification
TX6 -
N 1 7
Valve series
Refrigerant
N: R407C
H: R22
M: R134a
Z: R410A
Charge
0: Liquid
1: Gas MOP (see table 2, page 2)
Capacity size
2, 3, 4, 5, 6, 7 (see page 6 and 7)
TX6__35011_EN_R06.doc
5 / 12
17.03.2008
TX6
Thermo Expansion Valves
Selection table
Refrigerant
R 407C
R 22
R 134a
R 410A
Nominal capacity Qn
kW
Without MOP
Type
PCN
With MOP *)
Type
PCN
Connection size
Equalizer
Inlet x Outlet
14.4
14.4
25.6
25.6
35.7
35.7
45.2
45.2
66.9
66.9
87.3
87.3
TX6-N02
TX6-N02
TX6-N03
TX6-N03
TX6-N04
TX6-N04
TX6-N05
TX6-N05
TX6-N06
TX6-N06
TX6-N07
TX6-N07
801 651
801 653
801 652
801 654
801 659
801 663
801 660
801 664
801 661
801 665
801 662
801 666
TX6-N12
TX6-N12
TX6-N13
TX6-N13
TX6-N14
TX6-N14
TX6-N15
TX6-N15
TX6-N16
TX6-N16
TX6-N17
TX6-N17
801 655
801 534
801 656
801 535
801 667
801 536
801 668
801 537
801 669
801 538
801 670
801 539
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
12mm x 16mm
1/2" x 5/8"
12mm x 16mm
1/2" x 5/8"
16mm x 22mm
5/8" x 7/8"
16mm x 22mm
5/8" x 7/8"
22mm x 28mm
7/8" x 1-1/8"
22mm x 28mm
7/8" x 1-1/8"
13.3
13.3
23.7
23.7
33.0
33.0
41.8
41.8
61.9
61.9
80.8
80.8
TX6-H02
TX6-H02
TX6-H03
TX6-H03
TX6-H04
TX6-H04
TX6-H05
TX6-H05
TX6-H06
TX6-H06
TX6-H07
TX6-H07
801 551
801 549
801 552
801 550
801 585
801 581
801 586
801 582
801 587
801 583
801 588
801 584
TX6-H12
TX6-H12
TX6-H13
TX6-H13
TX6-H14
TX6-H14
TX6-H15
TX6-H15
TX6-H16
TX6-H16
TX6-H17
TX6-H17
801 555
801 553
801 556
801 554
801 593
801 589
801 594
801 590
801 595
801 591
801 596
801 592
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
12mm x 16mm
1/2" x 5/8"
12mm x 16mm
1/2" x 5/8"
16mm x 22mm
5/8" x 7/8"
16mm x 22mm
5/8" x 7/8"
22mm x 28mm
7/8" x 1-1/8"
22mm x 28mm
7/8" x 1-1/8"
10.3
10.3
18.4
18.4
25.6
25.6
32.5
32.5
48.1
48.1
62.8
62.8
TX6-M02
TX6-M02
TX6-M03
TX6-M03
TX6-M04
TX6-M04
TX6-M05
TX6-M05
TX6-M06
TX6-M06
TX6-M07
TX6-M07
801 543
801 541
801 544
801 542
801 569
801 565
801 570
801 566
801 571
801 567
801 572
801 568
TX6-M12
TX6-M12
TX6-M13
TX6-M13
TX6-M14
TX6-M14
TX6-M15
TX6-M15
TX6-M16
TX6-M16
TX6-M17
TX6-M17
801 547
801 545
801 548
801 546
801 577
801 573
801 578
801 574
801 579
801 575
801 580
801 576
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
12mm x 16mm
1/2" x 5/8"
12mm x 16mm
1/2" x 5/8"
16mm x 22mm
5/8" x 7/8"
16mm x 22mm
5/8" x 7/8"
22mm x 28mm
7/8" x 1-1/8"
22mm x 28mm
7/8" x 1-1/8"
TX6-Z12
TX6-Z12
TX6-Z13
TX6-Z13
TX6-Z14
TX6-Z14
TX6-Z15
TX6-Z15
TX6-Z16
TX6-Z16
TX6-Z17
TX6-Z17
801 510
801 511
801 512
801 513
801 514
801 515
801 516
801 517
801 518
801 519
801 520
801 521
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
12mm x 16mm
1/2" x 5/8"
12mm x 16mm
1/2" x 5/8"
16mm x 22mm
5/8" x 7/8"
16mm x 22mm
5/8" x 7/8"
22mm x 28mm
7/8" x 1-1/8"
22mm x 28mm
7/8" x 1-1/8"
16.0
16.0
28.0
28.0
40.0
40.0
50.0
50.0
74.0
74.0
97.0
97.0
Nominal capacities at +38°C saturated condensing temperature, +4°C saturated evaporating temperature and 1 K subcooling at the inlet of the
expansion valve. Valve selection for other operating conditions see pages 7 to 11.
*) See table 2 on page 2 for MOP values.
TX6__35011_EN_R06.doc
6 / 12
17.03.2008
TX6
Thermo Expansion Valves
Dimensioning of Thermo-Expansion Valves
To apply proper Thermo-Expansion Valves on a system the
following design conditions must be available:
•
Cooling capacity Q0
Effective pressure differential across TXV ∆p
•
•
Evaporating temperature / pressure
•
Lowest possible condensing temperature / pressure
Liquid temperature at the inlet of TXV
•
Refrigerant type
•
To facilate valve dimensioning for other than the standard
conditions ALCO offers an Excel based Selection Tool. This
can be ordered from all Copeland sales offices. See
www.eCopeland.com for contact addresses, email or phone
numbers.
Otherwise the following formula has to be used:
Cooling capacity x K∆p x Kt = Nominal capacity of TXV
•
Select Kt-factor according to refrigerant. liquid and
evaporating temperature from tables on pages 9-11.
•
Determine effective pressure differential across the
Thermo-Expansion Valve using condensing pressure.
subtract evaporating pressure and all other possible
pressure losses. Select K∆p-factor from tables
on pages 11 … 12.
Example 1
A valve has to be selected for the following conditions:
Refrigerant
System cooling capacity
Evaporating temperature
Lowest condensing temperature
Liquid temperature
Valve without MOP
R 22
45 kW
+5°C
+30°C
+25°C
Calculation:
1. Theoretical pressure differential:
Lowest condensing pressure is Pc = 11.9 bara at +30°C and
evaporating pressure is P0 = 5.8 bara at +5°C
Differential pressure is Pc - P0 = 11.9 – 5.9 = 6 bar
2. Pressure losses:
Across distributor = 1.0 bar
Others in piping. solenoid valve. drier. sight glass. fitting.
etc. = 0.5 bar
Total pressure losses = 1 + 0.5 = 1.5
3. Effective pressure differential across valve:
6.0 – 1.5 = 4.5 bar
TX6__35011_EN_R06.doc
4. Correction factors:
Correction factor K∆p for the pressure differential 4.5 bar
from table on page 9 for R 22
∆p = 4.5
K∆p = 1.42
Correction factor Kt for liquid and evaporating temperature
from table on page 9 for R 22 at +25°C / 5°C
Kt = 0.89
5. Calculation of nominal capacity Q0 x K∆p x Kt = Qn
45 x 1.42 x 0.89 = 56.9 kW.
You can select the valve from table on page 6.
It is a TX6-H06 with a nominal capacity of 61.9 kW.
7 / 12
17.03.2008
TX6
Thermo Expansion Valves
Dimensioning of Thermo-Expansion Valves for
systems with refrigerant R 407C
As opposed to single substances (e.g. R 22. R 134a etc.) where
the phase change takes place at a constant temperature /
pressure. the evaporation and condensation of zeotropic blend
R407C is in a “gliding” form (e.g. at a constant pressure the
temperature varies within a certain range) through evaporators
and condensers.
The condensing / evaporating pressure must be determined at
saturated temperatures (bubble / dew points) for dimensioning
of Thermo-Expansion Valves.
P
(bar)
R407C
35.5°C
13.6
30°C
+5°
C
5.5
-1°C
h
Example 2:
System cooling capacity (R407C)
Evaporating temperature (dew point)
Lowest condensing temperature (bubble)
Liquid temperature
Valve without MOP
55 kW
+5°C
+30°C
+25°C
Calculation:
1. Theoretical pressure differential:
Differential pressure is Pc - P0 = 13.6 – 5.5 = 8.1 bar
2. Pressure losses:
Across distributor = 1 bar
Others in piping, solenoid valve, drier, sight glass, fitting
etc. = 0.6 bar
Total pressure losses = 1 + 0.6 = 1.6
3. Effective pressure differential across valve:
8.1 - 1.6 = 6.5 bar
4. Correction factors:
Correction factor K∆p for the pressure differential 9.39 bar
from table on page 9 for R 407C
∆p = 6.5 bar
K∆p = 1.31
Correction factor Kt for liquid and evaporating temperature
from table on page 9 for R 407C at +25°C / +5°C
Kt = 0.85
5.
Calculation of nominal capacity Q0 x K∆p x Kt = Qn
55 x 1.31 x 0.85 = 61.2
You can select the valve from table on page 6.
It is a TX6-N06 with a nominal capacity of 66.9 kW.
Dimensioning of Thermo-Expansion Valves for heat
pump applications
Example 3:
A heat pump with following design conditions:
Cooling mode
Cooling capacity (R 22)
Condensing temperature
Evaporating temperature
Liquid temerature
Valve without MOP
20 kW
+45°C
+5°C
45°C
1. Theoretical pressure differential:
Differential pressure is Pc - P0 = 17.3 – 5.8 = 11.5 bar
2. Pressure losses: total pressure losses = 1.6
3. Effective pressure differential across valve:
11.5 – 1.6 = 9.9 bar
4. Correction factors:
∆p = 9.9
K∆p = 0.96
at +5°C and 45°C
Kt = 1.07
5. Calculation of nominal capacity Q0 x K∆p x Kt = Qn
20 x 0.96 x 1.07 = 20.5 kW
You can select the valve from table on page 6
Heating mode (Reverse flow)
Heating capacity (R 22)
15 kW
Condensing temperature
+30°C
Evaporating temperature
-10°C
Liquid temperature
+30°C
1. Theoretical pressure differential:
Differential pressure is Pc - P0 = 11.9 – 3.5 = 8.4 bar
2. Pressure losses: total pressure losses = 1.6
3. Effective pressure differential across valve:
8.4 – 1.6 = 6.8 bar
4. Correction factors:
∆p = 6.8
K∆p = 1.16
at -10°C and 30°C
Kt = 0.99
5. Calculation of nominal capacity Q0 x K∆p x Kt = Qn
15 x 1.42 x 0.89 = 17.2 kW.
TX6-H03 has sufficient capacity in reverse flow for 17.2 kW.
It is a TX6-H03 with a nominal capacity of 23.7 kW.
TX6__35011_EN_R06.doc
8 / 12
17.03.2008
TX6
Thermo Expansion Valves
Liquid temperature
entering valve
°C
+ 60
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
+ 15
+ 10
+5
0
-5
- 10
Correction factor Kt
Evaporating temperature °C
R22
+20
+ 15
+10
+5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
1.24 1.25 1.26 1.28 1.30 1.31 1.38 1.58 1.84 2.16 2.56 3.04 3.55 4.23
1.16 1.17 1.19 1.20 1.22 1.23 1.29 1.42 1.72 2.02 2.39 2.83 3.30 3.94
1.10 1.11 1.12 1.13 1.15 1.16 1.21 1.39 1.62 1.89 2.24 2.66 3.10 3.68
1.04 1.05 1.06 1.07 1.08 1.10 1.15 1.31 1.52 1.79 2.11 2.50 2.91 3.46
0.99 1.00 1.01 1.02 1.03 1.04 1.09 1.24 1.45 1.69 2.00 2.37 2.75 3.27
0.94 0.95 0.96 0.97 0.98 0.99 1.03 1.18 1.37 1.61 1.89 2.24 2.60 3.09
0.90 0.91 0.92 0.93 0.94 0.95 0.99 1.13 1.31 1.55 1.83 2.13 2.47 2.93
0.86 0.87 0.88 0.89 0.89 0.90 0.94 1.08 1.25 1.46 1.72 2.03 2.36 2.80
0.83 0.83 0.84 0.85 0.86 0.87 0.90 1.03 1.19 1.40 1.64 1.94 2.25 2.66
0.80 0.81 0.81 0.82 0.83 0.87 0.99 1.14 1.34 1.57 1.86 2.15 2.55
0.78 0.78 0.79 0.80 0.83 0.95 1.10 1.28 1.51 1.78 2.06 2.44
0.75 0.76 0.77 0.80 0.91 1.06 1.23 1.45 1.71 1.98 2.34
0.73 0.74 0.77 0.88 1.02 1.19 1.39 1.65 1.90 2.25
0.71 0.74 0.85 0.98 1.14 1.34 1.58 1.83 2.17
0.72 0.82 0.95 1.10 1.30 1.53 1.77 2.09
Liquid temperature
entering valve
°C
+ 60
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
+ 15
+ 10
+5
0
-5
- 10
Correction factor K∆p
∆p (bar)
K∆p
∆p (bar)
K∆p
Liquid temperature
entering valve
°C
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
+ 15
+ 10
+5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
8
9
4.25 3.00 2.46 2.13 1.90 1.74 1.61 1.50 1.42 1.35 1.28 1.23 1.18 1.14 1.06 1.00
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
∆p (bar)
K∆p
∆p (bar)
0.95 0.91 0.87 0.83 0.80 0.78 0.75 0.73 0.71 0.69 0.67 0.66 0.64 0.63 0.61 0.60
K∆p
Correction factor Kt
Evaporating temperature °C
Liquid temperature
entering valve
°C
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
+ 15
+ 10
+5
0
R407C
+20
+15
+10
+5
0
-5
-10
-15
-20
-25
1.23 1.26 1.28 1.31 1.34 1.37 1.40 1.63 1.98 2.42
1.13 1.15 1.17 1.19 1.22 1.24 1.27 1.48 1.79 2.18
1.05 1.06 1.08 1.10 1.12 1.14 1.17 1.35 1.64 2.00
0.98 0.99 1.01 1.02 1.04 1.06 1.08 1.25 1.52 1.84
0.92 0.93 0.94 0.96 0.98 0.99 1.01 1.17 1.41 1.71
0.87 0.88 0.89 0.90 0.92 0.93 0.95 1.10 1.32 1.60
0.82 0.83 0.84 0.85 0.87 0.88 0.90 1.03 1.25 1.51
0.78 0.79 0.80 0.81 0.82 0.84 0.85 0.98 1.18 1.43
0.75 0.76 0.77 0.78 0.80 0.81 0.93 1.12 1.35
0.73 0.74 0.75 0.76 0.77 0.89 1.07 1.29
0.71 0.72 0.73 0.74 0.85 1.02 1.23
0.69 0.70 0.71 0.81 0.98 1.18
Correction factor K∆p
∆p (bar)
K∆p
∆p (bar)
K∆p
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
8
9
4.78 3.33 2.72 2.36 2.11 1.92 1.78 1.67 1.57 1.49 1.42 1.36 1.31 1.26 1.18 1.11
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
1.05 1.01 0.96 0.92 0.89 0.86 0.83 0.81 0.79 0.76 0.75 0.73 0.71 0.70 0.68 0.67
TX6__35011_EN_R06.doc
9 / 12
∆p (bar)
K∆p
∆p (bar)
K∆p
17.03.2008
TX6
Thermo Expansion Valves
Liquid temperature
entering valve
°C
+ 60
+ 55
+50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
+ 15
+ 10
+5
0
-5
- 10
Correction factor Kt
Evaporating temperature °C
R134a
+20
+ 15
+10
+5
0
-5
-10
-15
-20
Liquid temperature
entering valve
°C
+ 60
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
+ 15
+ 10
+5
0
-5
- 10
-25
1.27 1.30 1.33 1.36 1.40 1.44 1.48 1.75 2.08 2.46
1.18 1.21 1.23 1.26 1.29 1.33 1.36 1.60 1.90 2.25
1.10 1.13 1.15 1.17 1.20 1.23 1.26 1.48 1.76 2.07
1.04 1.06 1.08 1.10 1.12 1.15 1.17 1.38 1.63 1.92
0.98 0.99 1.01 1.03 1.05 1.08 1.10 1.29 1.52 1.79
0.92 0.94 0.96 0.97 0.99 1.01 1.03 1.21 1.43 1.68
0.88 0.89 0.91 0.92 0.94 0.96 0.98 1.14 1.35 1.58
0.83 0.85 0.86 0.87 0.89 0.91 0.92 1.08 1.27 1.49
0.80 0.81 0.82 0.83 0.85 0.89 0.88 1.02 1.21 1.41
0.77 0.78 0.79 0.81 0.82 0.84 0.97 1.15 1.34
0.75 0.76 0.77 0.78 0.80 0.93 1.09 1.28
0.73 0.74 0.75 0.76 0.89 1.04 1.22
0.71 0.72 0.73 0.85 1.00 1.17
0.69 0.70 0.82 0.96 1.12
0.68 0.79 0.92 1.07
Correction factor K∆p
∆p (bar)
K∆p
∆p (bar)
K∆p
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
3.50 2.48 2.02 1.75 1.57 1.43 1.32 1.24 1.17 1.11 1.06 1.01 0.97 0.94 0.90 0.88
8.5
9
9.5
10
10.5
11
11.5
12
13
14
15
16
17
18
19
20
∆p (bar)
K∆p
∆p (bar)
0.85 0.83 0.80 0.78 0.76 0.75 0.73 0.72 0.69 0.66 0.64 0.62 0.60 0.58 0.57 0.55
K∆p
Correction factor Kt
Evaporating temperature °C
Liquid temperature
entering valve
°C
+ 60
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
Liquid temperature
entering valve
°C
+ 60
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
R410A
+ 15
+10
+5
0
-5
-10
-15
-20
-25
-30
-35
-40
1,50 1,51 1,53 1,54 1,57 1,59 1,85 2,16 2,55 3,03 3,64 4,42
1,32 1,33 1,35 1,36 1,38 1,40 1,62 1,89 2,23 2,65 3,17 3,84
1,20 1,20 1,21 1,23 1,24 1,26 1,46 1,70 2,00 2,37 2,83 3,42
1,09 1,10 1,11 1,12 1,13 1,15 1,33 1,55 1,82 2,15 2,57 3,10
1,01 1,02 1,03 1,04 1,05 1,06 1,22 1,43 1,67 1,98 2,36 2,84
0,94 0,95 0,96 0,97 0,98 0,99 1,14 1,32 1,55 1,83 2,18 2,63
0,89 0,89 0,90 0,91 0,91 0,92 1,06 1,24 1,45 1,71 2,04 2,45
0,84 0,84 0,85 0,85 0,86 0,87 1,00 1,16 1,36 1,61 1,91 2,30
0,79 0,80 0,80 0,81 0,81 0,82 0,95 1,10 1,28 1,51 1,80 2,16
Correction factor K∆p
∆p (bar)
K∆p
∆p (bar)
K∆p
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
8
9
5,29 3,74 3,05 2,65 2,37 2,16 2,00 1,87 1,76 1,67 1,60 1,53 1,47 1,41 1,32 1,25
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
1,18 1,13 1,08 1,04 1,00 0,97 0,94 0,91 0,88 0,86 0,84 0,82 0,80 0,78 0,76 0,75
TX6__35011_EN_R06.doc
10 / 12
∆p (bar)
K∆p
∆p (bar)
K∆p
17.03.2008
TX6
Thermo Expansion Valves
Technical data
Maximum working pressure
TX6-H/M/N.. PS: 31 bar
TX6-Z12/13/14/15/16/17 PS: 42 bar
Compatibility
CFC, HCFC, HFC. Mineral
and POE lubricants.
Fluid group
II
Medium temperature range TS -45 to 65°C
Charges
CFC free
Charge
Refrigerant
N0
H0
M0
N1. MOP 6.9 bar
H1. MOP 6.9 bar
M1. MOP 3.8 bar
Z1 MOP 12.1 bar
R 407C
R 22
R 134a
R 407C
R 22
R 134a
R 410A
CE-Marking
according to PED:
Not required
Seat leakage
≤ 1% nominal capacity
Connection
Power element
Label
ODF copper
Laser welding, stainless steel
Pin printing
Recommended evaporating
temperature range
°C
-25 to +20
-45 to +20
-25 to +30
-25 to +14
-45 to +12
-25 to +10
-45 to +14
Maximum bulb temperature
°C
71
71
88
120
120
120
120
Shipping weight and pack quantity TX6
Pack quantity
Shipping weight
TX6__35011_EN_R06.doc
12 pcs
0.65 kg
(individual)
11 / 12
17.03.2008
TX6
Thermo Expansion Valves
Dimensions
TX6-….2/3
TX6-….4/5/6/
127
127
102
A1
A2
111
B1
A1
B2
A2
B1
B2
A3
64
A3
B3
64
B3
64
Type
TX6-…2
TX6-…3
TX6-…4
TX6-…5
TX6-…6
TX6-…7
A1
∅
1/2” & 12 mm
1/2” & 12 mm
5/8” & 16 mm
5/8” & 16 mm
7/8” & 22 mm
7/8” & 22 mm
B1
mm
9
9
13
13
19
19
A2
∅
5/8” & 16 mm
5/8” & 16 mm
7/8” & 22 mm
7/8” & 22 mm
1-1/8” & 28 mm
1-1/8” & 28 mm
64
B2
mm
13
13
19
19
23
23
A3
∅
1/4” & 6 mm
1/4” & 6 mm
1/4” & 6 mm
1/4” & 6 mm
1/4” & 6 mm
1/4” & 6 mm
ALCO CONTROLS is not to be held responsible for erroneous literature
regarding capacities, dimensions, applications, etc. stated herein.
Products, specifications and data in this literature are subject to change
without notice. The information given herein is based on technical data
and tests which ALCO CONTROLS believes to be reliable and which
are in compliance with technical knowledge of today. It is intended only
Emerson Electric GmbH & Co. OHG
ALCO CONTROLS
Heerstraße 111
D-71332 Waiblingen
Germany
Phone ...49-(0)7151-509-0
Fax ...49-(0)7151-509-200
www.eCopeland.com/alcoliterature.cfm
TX6__35011_EN_R06.doc
B3
mm
Capillary tube
mm
8
1500
Bulb size
Diameter
Length
mm
mm
13
(R410A:
19,2)
89
(R410A:
59)
for use by persons having the appropriate technical knowledge and
skills, at their own discretion and risk. Since conditions of use are
outside of ALCO'S control we can not assume any liability for results
obtained or damages occurred due to improper application.
This document replaces all earlier versions.
Benelux
Denmark & Finland
Eastern Europe, Turkey & Iran
France, Greece, Maghreb
Deutschland, Österreich, Schweiz
Italia
Middle East & Africa
Poland
Russia & Cis
España & Portugal
Sweden & Norway
UK & Ireland
12 / 12
Phone.:
+31 (0)773 240 234
+32 (0)87 305 565
+32 (0)87 305 061
+33 (0)478 668 570
+49 (0)6109 6059 0
+39 02 961 78 1
+97 148 832 828
+48 (0)22 458 9205
+7 495 981 9811
+34 93 4 123 752
+32 (0)87 305 565
+44 (0)1 189 838 000
Fax:
+31 (0)773 240 235
+49 24 08 929 568
+32 (0)87 305 506
+33 (0)478 668 571
+49 (0)6109 6059 40
+39 02 961 78 888
+97 148 832 848
+48 (0)22 458 9255
+7 495 981 9816
+34 93 4 124 215
+49 24 08 929 568
+44 (0)1 189 838 001
17.03.2008
Instruction Sheet
PA-00211
August 2007
ASC, ASC2, AM, AH, DM, EB, EM, MM, RM Coils
ASC, ASC2, AM, AH, DM, EB, EM, MM, RM Coils
GENERAL INSTALLATION
6. Dual Voltage Wiring Diagram
1. Verify selection of proper coil type, coil voltage and
frequency. This information appears on coil nametag.
COIL
Emerson Climate
Technologies
COIL TYPE AM
VOLTS 24
WATTS 7 HZ 50-60
2. Always disconnect electrical power source.
240-480 V. COIL
120-240 V. COIL
BLACK
YELLOW
RED
BLUE
120V.
COIL
120V.
BLACK
240V.
YELLOW
RED
BLACK
YELLOW
RED
COIL
240V.
BLUE
BLUE
240V.
COIL
240V.
BLACK
480V.
YELLOW
RED
480V.
BLUE
INSTALLATION OF ASC OR ASC2 COILS
1. Install coil so that electrical connections are closer to
the top of the enclosing tube.
2. Use metal snap cap X-13740-1 and press on until you
hear it click into place.
3. Attach electric connector (DIN PLUG) onto coil and
tighten screw until snug.
INSTALLATION OF RM COILS
3. Install the coil on the enclosing tube of the valve.
1. Install coil on top of the enclosing tube.
2. Attach lockwasher and screw to top and secure tightly.
WARNING
4. Coil may be rotated 360° for easy wiring. It is recommended that coil lead connections be soldered on D.C.
and 24V/50-60 HZ.
360°
A. Caution: Failure to attach ground wire to grounding lug
violates certain electrical codes and creates the
possibility of shock hazard.
B. Caution: Omission of conduit cover locking screw
violates certain electrical codes and could cause cover
to come off exposing "live" (energized) wires with
resulting possibility of fire hazard and/or personal
injury.
REMOVE
1. Verify selection of proper coil type, coil voltage and
frequency.
2. Before removing coil from valve, always disconnect
electrical power source. Failure to do so will cause a
good coil to burn out and possible personal injury or
property damage.
3. Remove old coil.
5. Press firmly to ensure coil is secured.
Warning: To avoid any damage to the enclosing tube, use
your hands to secure the coil, do not use a hammer or
other kind of tool.
CLICK
www.emersonclimate.com/flowcontrols
11911 Adie Road P.O. Box 411400 St. Louis MO 63141 USA
CUSTOMER SERVICE (314) 569-4666
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Technical Data
ALCO Controls EX4 / EX5 / EX6 / EX7 / EX8 are stepper motor
driven valves for precise control of refrigerant mass flow in air
conditioning, refrigeration, heat pumps, close control, and
industrial process cooling applications.
The Control Valves can be used as thermo-expansion duty,
liquid injection duty, hot gas bypass, evaporator pressure
regulator, crankcase pressure regulator, head pressure
regulator, or liquid level control.
This data sheet describes only the performance of the valves.
Operation of required controllers, driver boards and sensors
are part of other documentations (see page 29).
EX4 / EX5 / EX6 (Uni-flow/Bi-flow)
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Multifunction as expansion valves, hot gas bypass, suction
gas throttling, head pressure, liquid level actuator etc.
Fully hermetic design (no thread joints between valve body
and motor compartment)
Stepper motor driven
Very fast full stroke time (1.5 sec. for EX4/5/6, 3.2 sec. for
EX7 and 5.2 sec. for EX8)
High resolution and excellent repeatability
Bi-flow versions for heat pump applications
Positive shut-off function to eliminate the use of an
additional solenoid valve
Linear flow capacity
Extremely wide capacity range (10 … 100%)
Continuous modulation of mass flow, no stress (liquid
hammering) in the refrigeration circuit
Direct coupling of motor and valve for high reliability (no
gear mechanism)
Ceramic slide and port for accurate flow and minimal wear
Balanced force design
Corrosion resistant stainless steel body
Europe patent No. 0743476, USA patent No. 5735501,
Japan patent No. 28225789
Compatible with all CFCs, HCFCs and HFCs
EX7 (Uni-flow/Bi-flow)
EX8 (Uni-flow)
Selection table
Type
EX4-I21
Part Code
Nr.
Flow pattern
Capacity range
Inlet connection
Outlet connection
3/8” ODF
5/8” ODF
800 615
EX4-M21
800 616
10 mm ODF
16 mm ODF
EX5-U21
800 618
5/8” (16 mm) ODF
7/8” (22 mm) ODF
EX6-I21
800 620
7/8” ODF
1-1/8” ODF
EX6-M21
800 621
EX7-I21
800 624
Uni-flow
22 mm ODF
28 mm ODF
1-1/8” (28 mm) ODF
1-3/8” (35 mm) ODF
Electrical
connection
M12 plug
EX7-M21
800 625
1-1/8” (28 mm) ODF
1-3/8” (35 mm) ODF
EX8-M21
801 964
42 mm ODF
42 mm ODF
DIN Plug
EX8-U21
801 970
1-3/8” (35 mm) ODF
1-3/8” (35 mm) ODF
DIN Plug
EX4-U31
800 617
5/8” (16 mm) ODF
5/8” (16 mm) ODF
EX5-U31
800 619
7/8” (22 mm) ODF
7/8” (22 mm) ODF
EX6-I31
800 622
1-1/8” ODF
1-1/8” ODF
10 … 100%
Bi-flow
(Heat pump)
EX6-M31
800 623
28 mm ODF
28 mm ODF
EX7-U31
800 626
1-3/8” (35 mm) ODF
1-3/8” (35 mm) ODF
M12 plug
EX4/5/6/7 is delivered without cable/connector assembly (order separately). EX8 is delivered with electrical DIN plug.
EX48_35008_EN_R07.doc
1 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Cable and connector assembly for EX4 / EX5 / EX6 /EX7
Type
EX5-N15
EX5-N30
Part Code Temperature
Nr.
Range
804 650
-25 … +80°C
804 651
EX5-N60
804 652
EX5-L60
804 655
EX5-C15
804 656
EX5-C30
804 657
EX5-C60
804 658
Length
Connector type to
valve
Connector type to driver board
or controller
M12
Loose wires for EXD-S / -U / -C
and EC3-33x
1.5 m
3.0 m
6.0 m
-50 …+80°C
6.0 m
M12, low temp.
1.5 m
-25 … +80°C
Illustration
3.0 m
Phoenix type, crimp connection
for Alco EC3 controller
M12
6.0 m
Introduction
Guidelines for selection of electrical control valves
Thermostatic expansion valves and mechanical regulator valves
have been used in the refrigeration and air conditioning industry
to control superheat and refrigerant mass flow since its very
beginning. As today’s systems require improved energy
efficiency, tighter temperature control, wider range of operating
conditions and incorporate new features like remote monitoring
and diagnostics, the application of electronically operated
valves becomes mandatory. Only they offer the controls
performance necessary to meet these needs.
As more new refrigerants appear on the market requiring an
ever increasing number of different charges and settings for
thermostatic expansion valves, electrical control valves can
solve this problem too.
ALCO electrical control valves are the solution for the
challenges above. The latest technology and more than 80
years of experience in design and production of flow controls
including Thermo® expansion valves have been incorporated in
the design of the EX4, EX5, EX6, EX7 and EX8.
The following guideline should be taken in to the consideration
in order to obtain full advantages of ECV:
Published capacities are maximum. There are no reserve
capacities.
Larger size of valve leads to shorter pull down period and
shorter travel time i.e. faster respond. For example, EX7
has maximum 3.2 seconds travel time. The valve has
approximately 1.6 seconds travel time at 50% capacity
operation.
Construction
EX4/EX5/EX6/EX7/EX8 consist of two main internal
assemblies, the valve and the stepper motor. The stepper motor
is connected directly to the slide and cage assembly of the
valve. Similar to the technology used in compressors, the motor
is exposed to refrigerant and lubricant and the materials used
are identical. The housing of the motor and valve assembly is
fully hermetic, utilising exclusively brazing and welding
technologies and eliminating all gaskets.
This design offers several technical advantages. The motor is
direct coupled to the valve assembly for easy and reliable
movement of the valve slide, no need for any other seals and
eliminating the use of bellows and diaphragms which could be
subject to lifetime limitations and leaks.
Four electrical pins connect the motor to the outside. These
pins are applied to the housing using melting-glass process
technology. The EX4/5/6/7 pins require a M12 electrical
connector. EX8 is supplied with DIN electrical plug.
The complete housing of the ECVs is made from stainless steel.
EX8 is equipped with rotalock connections.
Unlike to mechanical expansion valves, EX4/5/6/7/8 are
equipped with ceramic slide port.
ALCO Selection Tool
For easy and quick selection of Electrical Control Valves an
Excel based selection tool can be ordered from the ALCO sales
offices, or use the quick selection tables mentioned in this
datasheet.
Example:
System with R407C having two different operating conditions:
A) 110 kW capacity at +4°C/+50°C with two stages compressor
at 50%/100% capacity
B) 137 kW at +4°C/+30°C with two stages compressor at
50%/100% capacity
EX6 with 126 kW covers condition A, however is not sufficient
to cover condition B. It is recommended to select the larger
valve EX7 which offers 337 kW at condition A and 293 kW at
condition B.
Condition A:
Full load ratio =
110
= 33%
337
Partial load ratio =
(110 / 2)
= 16%
337
Condition B:
Full load ratio =
137
= 47%
293
(137 / 2)
= 23%
293
The capacity ratios of system to valve are in all conditions
higher than 10%. It is recommended to use EX7 rather EX6.
Partial load ratio =
Features:
Wide range regulation (10 … 100%) with one slide orifice
for each valve
Linear characteristic over entire capacity range
Positive shut-off
-
EX48_35008_EN_R07.doc
2 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
EX4/EX5/EX6/EX7/EX8 nominal and extended capacities as expansion valves and liquid injection valves
Nominal Capacities (10% … 100%), kW
Valve Type
R 407C
R 22
EX4
2 ... 17.4
2 ... 16.5
EX5
5 ... 53
5 ... 50
EX6
15 ... 126
15 ... 120
EX7
35 ... 347
35 ... 330
EX8
100 ... 925
90 ... 880
R 134a
1 ... 12.8
4 ... 39
10 ... 93
25 ... 255
70 ... 680
R 404A
1 ... 11.5
4 ... 35
10 ... 84
25 ... 230
60 ... 613
The nominal capacity (Qn) is based on the following conditions:
Refrigerant
Evaporating temperature
R 22, R 134a, R 404A, R 410A
+4°C
R 407C
+4°C dew point
R 124
+20°C
R 23
-60°C
R 744
-40°C
R 410A
2 ... 19.3
6 ... 58
15 ... 140
40 ... 385
100 ... 1027
Condensing temperature
+38°C
+38°C bubble / +43°C dew point
+80°C
-25°C
-10°C
Overview of working pressure regardless of applied refrigerant type
Valve type
Flow pattern
Maximum working pressure PS
EX4, EX5, EX6, EX7
Uni-flow/Bi-flow
45 bar
EX8
Uni-flow
35 bar
R 23
2 ... 17.8
5 ... 54
13 ... 130
-
R 124
1 ... 9.2
3 ... 28
7 ... 67
-
R 744
3 ... 33.5
10 ... 102
24 ... 244
70 ... 670
180 ... 1789
Subcooling
1K
1K
1K
1K
1K
Factory test pressure PT
49.5 bar
38.5 bar
Capacity Diagrams (kW)
Qn, kW
35
30
R744 (33.5 kW)
R410A (19.3 kW)
25
R23 (17,8 kW)
R407C (17.4 kW)
20
R22 (16.5 kW)
R134a (12.8 kW)
R404A (11.5 kW)
15
34
EX4
19
18
17
17
R124 (9.2 kW)
13
12
9
10
5
0
0
50
00
100
150
200
250
300
350
400
450
500
550
600
650
700
750
Number of Steps
110
R744 (102 kW)
R410A (58 kW)
100
90
EX5
R23 (54 kW)
R407C (53 kW)
80
70
Qn, kW
102
R22 (50 kW)
R134a (39 kW)
R404A (35 kW)
60
50
58
53
54
50
R124 (28 kW)
40
39
35
28
30
20
10
0
0
50
00
100
150
200
250
300
350
400
450
500
550
600
650
700
750
Number of Steps
EX48_35008_EN_R07.doc
3 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
250
244
R744 (244 kW)
R410A (140 kW)
200
EX6
R23 (130 kW)
R407C (126 kW)
R22 (120 kW)
Qn, kW
150
140
130
126
120
R134a (93 kW)
R404A (84 kW)
100
93
84
67
R124 (67 kW)
50
0
100
0
0
50
150
200
250
300
350
400
450
500
550
600
650
700
750
Number of Steps
700
670
EX7
R744 (670 kW)
600
R410A (385 kW)
R407C (347 kW)
500
Qn, kW
R22 (330 kW)
400
385
347
330
R134a (255 kW)
R404A (230 kW)
300
255
230
200
100
0
0
0
200
400
600
800
1000
1200
1400
1600
Number of Steps
1200
1100
Qn, kW
900
R407C (925 kW)
800
R22 (880 kW)
700
R134a (680 kW)
600
R404A (613 kW)
1027
925
880
EX8
R410A (1027 kW)
1000
680
613
500
400
300
200
100
0
0
0
200
400
600
800
1000
1200
1400
1600
1800
2000
2200
2400
2600
Number of Steps
EX48_35008_EN_R07.doc
4 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities as expansion and liquid injection valves
The following tables provide the capacity of valves at different conditions considering 1.5 bar pressure drop through liquid line:
Condensing
temperature
°C
60
55
50
45
40
35
30
25
20
15
10
EX48_35008_EN_R07.doc
Extended capacity kW
R 410A
15
10
5
0
17
51
123
339
18
53
127
350
935
18
53
128
351
936
17
52
124
342
913
16
49
118
324
864
15
45
108
296
789
13
38
93
255
680
10
29
71
195
520
4
13
31
84
225
17
52
126
348
18
55
132
362
965
18
55
133
366
975
18
54
131
361
962
17
52
126
348
927
16
49
118
326
869
15
44
107
294
786
13
38
91
251
669
9
28
68
188
501
3
10
23
64
172
18
53
129
354
19
56
135
370
988
19
57
137
377
1006
19
57
136
375
1001
18
55
133
366
977
18
53
127
349
932
16
49
118
325
866
15
44
106
291
775
12
37
89
244
652
9
27
65
178
475
1
4
10
28
76
18
54
130
358
19
57
137
377
1005
19
58
140
386
1029
19
58
141
387
1031
19
57
138
381
1015
18
55
134
368
981
17
52
126
348
928
16
48
117
321
855
14
43
103
284
758
12
36
86
236
629
8
25
60
166
443
Evaporating temperature °C
-5
-10 -15 -20 -25
18
54
131
360
19
57
138
381
1016
20
59
142
392
1045
20
60
144
395
1054
20
59
142
392
1045
19
58
139
382
1019
18
55
133
366
976
17
52
125
344
916
16
47
114
314
837
14
42
100
276
735
11
34
82
225
600
18
54
131
361
19
58
139
383
1021
20
60
144
396
1056
20
60
146
401
1070
20
60
145
400
1067
20
59
143
393
1048
19
57
138
380
1013
18
54
131
361
964
17
51
122
337
898
15
46
111
305
813
13
40
96
265
706
18
54
131
360
19
58
139
383
1023
20
60
145
398
1061
20
61
147
405
1080
20
61
147
406
1082
20
60
146
401
1069
20
59
142
390
1041
19
56
136
375
1000
18
53
129
354
944
16
49
119
327
873
15
44
107
294
783
5 / 32
18
54
130
358
19
58
139
382
1020
20
60
145
398
1062
20
61
148
407
1085
21
62
149
409
1091
20
61
148
406
1083
20
60
145
398
1061
19
58
140
385
1027
18
55
133
367
979
17
52
125
344
917
16
47
115
315
841
18
53
129
354
19
57
138
380
1014
20
60
144
397
1059
20
61
148
407
1085
21
62
149
411
1095
21
62
149
409
1092
20
61
147
403
1075
20
59
143
392
1046
19
57
137
377
1005
18
54
130
357
951
17
50
121
332
885
Valve
Type
-30
-35
-40
-45
18
53
127
350
19
57
137
377
1005
20
59
143
394
1052
20
61
147
405
1082
21
62
149
411
1095
21
62
149
411
1095
20
61
148
406
1083
20
60
144
397
1058
19
58
139
383
1023
18
55
133
366
976
17
52
125
344
917
17
52
125
344
19
56
135
372
992
20
59
142
391
1043
20
61
146
403
1075
21
62
149
409
1091
21
62
149
410
1095
20
61
148
407
1086
20
60
145
399
1065
19
58
141
388
1034
19
56
135
372
992
18
53
128
352
940
17
51
123
338
18
55
133
366
978
19
58
140
386
1030
20
60
145
399
1064
20
61
148
406
1084
20
62
149
409
1090
20
61
148
406
1084
20
60
146
400
1067
20
59
142
390
1040
19
57
137
376
1003
18
54
130
358
956
17
50
120
331
18
54
131
360
961
19
57
138
380
1015
20
59
143
394
1052
20
61
146
402
1073
20
61
148
406
1082
20
61
147
405
1079
20
60
145
399
1065
20
59
142
390
1042
19
57
137
378
1008
18
55
132
362
965
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities as expansion and liquid injection valves
The following tables provide the capacity of valves at different conditions considering 1.5 bar pressure drop through liquid line:
Condensing temperature
Dew point
Bubble point
°C
°C
64
60
59
55
54
50
50
45
45
40
40
35
35
30
30
25
26
20
21
15
16
10
EX48_35008_EN_R07.doc
R 407C
Extended capacity kW
Valve
Evaporating temperature °C (Dew point)
Type
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
16
50
119
328
874
17
50
120
330
879
16
50
118
326
869
16
48
115
316
843
15
46
109
300
801
14
42
101
278
742
12
38
90
248
661
10
32
75
207
552
7
23
54
148
395
17
51
120
332
884
17
51
122
336
895
17
51
121
334
891
16
50
119
327
873
16
48
114
315
840
15
45
108
297
793
14
42
99
273
729
12
37
88
241
644
10
30
72
199
530
7
21
50
137
365
17
51
121
333
889
17
52
123
339
904
17
52
123
340
906
17
51
122
336
894
16
50
118
326
870
16
48
113
312
832
15
45
106
292
779
13
41
97
266
710
12
36
85
233
621
9
29
69
189
503
6
19
45
123
329
17
51
121
333
889
17
52
124
341
909
17
52
125
343
915
17
52
124
341
909
17
51
121
334
891
16
49
117
323
860
15
47
111
306
817
14
44
103
285
760
13
39
94
258
687
11
34
81
223
594
9
27
64
176
470
17
51
121
332
885
17
52
124
341
908
17
53
125
345
919
17
53
125
344
918
17
52
123
339
905
17
50
120
330
880
16
48
115
317
844
15
46
108
299
796
14
42
100
276
735
12
38
90
247
658
11
32
76
210
561
17
50
119
329
877
17
52
123
339
904
17
53
125
345
919
17
53
125
346
921
17
52
124
342
913
17
51
122
335
894
16
49
118
324
864
15
47
112
309
823
14
44
105
289
770
13
40
96
265
705
12
36
85
234
624
16
50
118
325
867
17
51
122
336
897
17
52
125
343
914
17
53
125
345
920
17
52
125
344
916
17
52
123
338
901
16
50
119
329
876
16
48
115
316
841
15
46
108
299
796
14
42
101
277
740
13
38
91
251
670
16
49
116
320
854
17
51
121
332
886
17
52
123
340
907
17
52
125
344
916
17
52
125
343
915
17
52
123
339
904
17
51
120
331
883
16
49
116
320
853
15
47
111
305
814
14
44
104
287
764
13
40
96
264
704
16
48
114
314
838
16
50
119
328
873
17
51
122
336
896
17
52
124
341
908
17
52
124
341
910
17
52
123
338
902
17
51
121
332
885
16
49
117
322
860
16
47
112
309
825
15
45
106
293
781
14
42
99
273
727
15
47
112
308
821
16
49
117
322
858
17
51
120
331
883
17
51
122
337
897
17
52
123
338
902
17
51
122
337
897
17
51
120
331
884
16
49
117
323
861
16
48
113
312
831
15
45
108
297
791
14
43
101
279
743
15
46
109
301
802
16
48
114
315
840
16
50
118
325
868
17
51
120
332
884
17
51
121
334
891
17
51
121
334
889
17
50
120
329
878
16
49
117
322
859
16
48
113
312
832
15
46
108
299
796
14
43
103
282
753
15
45
106
293
781
15
47
112
308
821
16
49
116
319
851
16
50
118
326
869
17
50
120
330
878
17
50
120
330
879
16
50
119
326
870
16
49
116
320
854
16
48
113
311
829
15
46
109
299
797
14
43
103
284
757
14
43
103
285
759
15
46
109
301
801
16
48
113
312
832
16
49
116
320
853
16
49
118
324
864
16
50
118
325
866
16
49
117
323
860
16
48
115
317
846
15
47
112
309
824
15
46
108
298
795
14
43
103
284
758
6 / 32
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities as expansion and liquid injection valves
The following tables provide the capacity of valves at different conditions considering 1.5 bar pressure drop through liquid line:
Condensing
R 22
temperature
°C
60
55
50
45
40
35
30
25
20
15
10
EX48_35008_EN_R07.doc
15
10
5
0
17
51
123
337
900
16
50
119
328
876
16
48
114
314
838
15
45
107
295
787
13
41
98
270
719
12
36
86
237
632
10
29
70
194
516
7
20
47
130
347
17
52
126
345
921
17
51
123
339
903
16
50
119
327
873
16
47
113
311
830
15
44
106
290
774
13
40
96
264
703
11
35
83
229
611
9
28
67
184
491
6
18
43
117
312
18
53
128
351
936
17
52
126
346
923
17
51
123
337
899
16
49
118
324
864
15
46
111
306
817
14
43
103
284
757
13
39
93
256
682
11
33
80
220
587
9
26
63
173
461
5
15
37
101
269
18
54
129
355
946
18
53
128
352
938
17
52
125
345
919
17
51
121
334
890
16
48
116
319
850
15
45
109
300
799
14
42
100
276
735
12
37
90
246
656
10
32
76
209
557
8
24
58
160
426
4
12
29
80
214
Extended capacity kW
Valve
Evaporating temperature °C
-5
-10 -15 -20 -25
Type
-30
-35
-40
-45
18
54
130
357
952
18
54
129
355
948
18
53
127
350
933
17
52
124
341
909
16
50
119
328
875
16
47
113
312
831
15
44
106
291
776
13
40
97
266
709
12
36
85
235
627
10
30
71
196
524
7
22
53
145
386
17
53
127
350
932
18
53
128
353
941
18
54
128
353
942
18
53
127
350
934
17
52
125
345
919
17
51
122
336
896
16
49
118
325
866
16
47
113
311
829
15
45
107
294
784
14
42
100
274
731
13
38
91
251
669
17
52
126
345
921
17
53
127
350
932
18
53
127
351
935
17
53
127
348
929
17
52
125
344
916
17
51
122
336
896
16
49
118
326
869
16
47
114
313
835
15
45
108
298
793
14
42
102
279
745
13
39
94
258
689
17
52
124
340
908
17
52
126
345
921
17
53
126
347
925
17
52
126
346
922
17
52
124
342
911
17
51
122
335
893
16
49
118
326
868
16
48
114
314
837
15
45
109
300
799
14
43
103
283
754
13
40
96
263
702
17
51
122
335
893
17
52
124
340
908
17
52
125
343
914
17
52
124
342
912
17
51
123
339
903
17
50
121
333
888
16
49
118
324
865
16
48
114
314
836
15
46
109
300
801
14
43
104
285
759
13
40
97
267
711
18
54
130
358
954
18
54
130
357
953
18
54
129
354
943
17
52
126
346
923
17
51
122
335
894
16
49
117
321
856
15
46
110
303
808
14
43
102
281
749
13
39
93
254
678
11
34
81
222
593
9
28
66
182
485
18
54
130
357
953
18
54
130
358
955
18
54
129
355
948
17
53
127
349
932
17
52
124
340
907
16
50
119
327
873
16
47
113
312
831
15
44
106
292
779
13
41
98
269
718
12
37
88
241
644
10
31
76
208
554
7 / 32
18
54
129
356
948
18
54
130
357
953
18
54
129
356
949
18
53
128
351
936
17
52
125
343
915
17
50
121
332
885
16
48
116
318
848
15
46
109
301
802
14
42
102
280
747
13
39
93
256
682
11
34
82
227
604
18
53
128
353
941
18
54
129
356
949
18
54
129
355
947
18
53
128
351
937
17
52
125
345
919
17
51
122
335
893
16
49
117
322
859
15
46
112
307
818
14
44
105
288
768
13
40
97
266
710
12
36
87
241
642
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities as expansion and liquid injection valves
The following tables provide the capacity of valves at different conditions considering 1.5 bar pressure drop through liquid line:
Condensing
R 134a
temperature
°C
60
55
50
45
40
35
30
25
20
15
10
EX48_35008_EN_R07.doc
Extended capacity kW
Valve
Evaporating temperature °C
Type
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
13
39
93
255
679
12
38
91
249
663
12
36
87
238
636
11
34
81
223
595
10
31
74
202
539
9
27
63
173
463
7
20
49
133
356
3
10
23
63
169
13
39
94
257
686
13
39
92
253
676
12
38
90
246
655
12
36
85
234
623
11
33
79
217
578
10
30
71
194
517
8
25
60
164
436
6
18
44
121
322
2
5
12
34
90
13
39
94
258
688
13
39
93
256
683
13
38
91
250
668
12
37
88
241
642
11
35
83
227
606
10
32
76
209
556
9
28
67
184
492
8
23
55
152
406
5
16
38
105
281
13
39
94
257
686
13
39
94
257
685
13
39
92
253
675
12
38
90
246
655
12
36
85
234
625
11
34
80
219
584
10
30
73
199
531
9
26
63
173
462
7
21
51
139
370
4
13
32
87
231
13
39
93
255
680
13
39
93
256
683
13
39
93
254
677
12
38
91
248
662
12
37
87
239
638
11
35
83
226
604
11
32
76
210
559
9
29
69
188
501
8
25
58
160
427
6
19
45
123
328
3
9
22
61
162
13
39
92
252
672
13
39
93
254
678
13
39
92
253
676
13
38
91
249
664
12
37
88
242
645
12
35
84
231
616
11
33
79
217
578
10
30
72
198
529
9
27
64
175
467
7
22
53
145
388
5
16
38
104
277
12
38
90
248
661
13
38
92
251
670
13
38
92
251
671
12
38
91
249
663
12
37
89
243
647
12
36
85
234
623
11
34
81
221
590
10
31
75
206
548
9
28
68
186
495
8
25
59
161
428
6
20
47
128
341
12
37
89
243
648
12
38
90
247
659
12
38
91
249
663
12
38
90
247
658
12
37
88
242
646
12
36
86
235
625
11
34
82
224
597
11
32
77
210
560
10
29
70
193
514
9
26
62
171
456
7
22
52
144
384
12
36
87
237
633
12
37
88
242
647
12
37
89
245
653
12
37
89
244
651
12
37
88
240
641
12
36
85
234
624
11
34
82
225
600
11
33
78
213
567
10
30
72
197
526
9
27
65
178
475
8
24
56
155
413
12
35
84
231
616
12
36
86
237
632
12
37
88
240
640
12
37
88
240
641
12
36
87
238
634
12
36
85
232
620
11
34
82
224
599
11
33
78
214
570
10
31
73
200
533
9
28
67
183
488
8
25
59
162
432
11
34
82
224
598
12
35
84
231
616
12
36
86
235
627
12
36
86
236
629
12
36
85
234
625
12
35
84
230
613
11
34
81
223
595
11
33
78
213
569
10
31
73
201
536
9
28
68
186
495
8
26
61
167
445
11
33
79
217
580
11
34
82
225
599
12
35
84
229
611
12
35
84
231
616
12
35
84
230
614
11
35
83
227
604
11
34
80
221
588
11
32
77
212
565
10
31
73
201
535
9
29
68
187
498
9
26
62
170
452
11
32
77
210
560
11
33
80
218
582
11
34
81
223
595
11
35
82
226
602
11
34
82
225
601
11
34
81
223
594
11
33
79
217
580
11
32
76
210
559
10
31
73
199
532
9
29
68
187
498
9
26
62
171
455
8 / 32
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities as expansion and liquid injection valves
The following tables provide the capacity of valves at different conditions considering 1.5 bar pressure drop through liquid line:
Condensing
temperature
°C
60
55
50
45
40
35
30
25
20
15
10
EX48_35008_EN_R07.doc
R 404A / R 507
Extended capacity kW
Valve
Evaporating temperature °C
Type
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
9
28
68
186
495
10
30
72
198
527
10
31
74
203
541
10
31
74
201
537
10
29
71
193
515
9
27
65
178
474
8
23
56
153
409
6
17
42
114
305
1
3
8
21
56
9
28
68
187
498
10
31
73
201
535
10
32
76
208
555
10
32
77
210
559
10
31
75
205
547
10
30
71
195
519
9
27
65
177
472
8
23
55
150
400
5
16
40
108
289
9
28
68
186
496
10
31
74
202
538
11
32
77
211
564
11
33
79
215
574
11
33
78
214
570
10
31
75
207
551
10
30
71
194
517
9
27
64
174
465
7
22
53
146
388
5
15
37
101
268
9
28
67
184
491
10
31
74
202
537
11
32
78
213
567
11
33
80
219
583
11
33
80
219
585
11
33
79
215
574
10
31
75
206
550
10
29
70
191
510
8
26
62
170
453
7
21
51
139
371
5
14
33
91
242
9
28
66
181
482
10
30
73
200
533
11
32
78
213
567
11
33
80
220
587
11
34
81
223
594
11
34
81
221
590
11
33
78
215
573
10
31
74
204
543
9
28
68
187
499
8
25
60
164
437
7
20
48
131
350
9
27
65
177
471
10
30
72
197
525
11
32
77
211
562
11
33
80
220
586
11
34
82
225
598
11
34
82
225
599
11
34
81
221
588
11
32
78
213
566
10
30
73
200
532
9
28
66
181
484
8
24
57
156
417
9
26
63
172
458
10
29
70
193
514
10
32
76
208
555
11
33
80
219
582
11
34
82
225
598
11
34
83
226
603
11
34
82
224
598
11
33
80
218
582
10
32
76
208
555
10
29
71
194
516
9
26
64
174
464
8
25
61
166
443
9
29
69
188
501
10
31
75
204
545
11
33
79
216
575
11
34
81
223
595
11
34
83
226
604
11
34
83
226
603
11
34
81
222
592
11
33
78
214
571
10
31
74
202
540
9
28
68
186
496
8
24
58
160
425
9
28
67
182
486
10
30
73
200
532
11
32
78
212
566
11
34
81
221
588
11
34
82
225
600
11
34
83
226
603
11
34
82
224
596
11
33
80
218
580
10
32
76
208
555
10
30
71
195
519
8
23
56
153
407
9
27
64
176
470
10
30
71
194
518
10
32
76
208
553
11
33
79
217
578
11
34
81
223
594
11
34
82
225
600
11
34
82
224
597
11
33
80
219
585
11
32
77
212
564
10
31
73
201
535
7
22
53
145
387
8
26
62
169
451
9
29
69
188
501
10
31
74
202
539
11
32
78
213
567
11
33
80
219
585
11
34
81
223
593
11
34
81
223
593
11
33
80
220
585
11
32
78
213
569
10
31
75
204
544
7
21
50
137
366
8
25
59
162
432
9
28
66
181
484
10
30
72
196
524
10
32
76
208
553
11
33
79
215
573
11
33
80
219
584
11
34
80
220
587
11
33
80
218
582
11
33
78
214
569
10
31
75
206
548
6
20
47
129
344
8
23
56
154
411
9
27
64
174
465
9
29
69
190
506
10
31
74
202
538
11
32
77
210
560
11
33
79
215
573
11
33
79
217
579
11
33
79
216
576
11
32
78
213
566
10
31
75
206
549
9 / 32
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities as expansion and liquid injection valves
The following tables provide the capacity of valves at different conditions considering 1.5 bar pressure drop through liquid line:
Condensing
R 23
temperature
°C
-45
17
53
127
16
50
119
15
45
109
13
40
96
11
33
78
7
22
53
-10
-15
-20
-25
-30
-35
-40
-50
18
55
132
17
52
125
16
48
117
14
44
106
13
38
92
10
30
73
6
19
46
-45
Condensing
R 124
temperature
°C
100
95
90
85
80
75
70
65
60
EX48_35008_EN_R07.doc
-55
19
56
135
18
54
130
17
51
122
15
47
113
14
42
101
12
36
86
9
28
67
5
15
37
30
7
22
53
8
24
57
8
25
61
9
26
63
9
27
64
9
27
64
9
26
62
8
25
60
8
23
56
25
7
21
51
8
23
56
8
25
59
9
26
62
9
27
63
9
27
64
9
26
63
8
26
61
8
24
58
20
7
20
49
7
23
54
8
24
58
8
25
61
9
26
63
9
27
64
9
27
64
9
26
62
8
25
60
15
6
19
47
7
22
52
8
24
56
8
25
60
8
26
62
9
26
63
9
27
63
9
26
63
8
26
61
Extended capacity kW
Valve
Evaporating temperature °C
Type
-60
19
57
138
18
55
133
17
53
127
16
49
118
15
45
108
13
40
96
11
33
80
8
25
60
-65
19
58
139
19
56
135
18
54
130
17
51
122
16
47
114
14
43
103
12
37
90
10
30
73
-70
19
58
140
19
57
137
18
55
132
17
52
125
16
49
117
15
45
108
13
40
96
11
34
82
-75
19
58
140
19
57
137
18
55
133
17
53
127
16
50
120
15
46
111
14
42
101
12
37
88
-80
19
58
140
19
57
137
18
55
134
18
53
128
17
51
122
16
47
114
14
43
104
13
39
93
-85
19
58
139
19
57
137
18
55
133
18
53
129
17
51
122
16
48
115
15
44
106
13
40
96
-90
19
57
138
19
57
136
18
55
133
18
53
128
17
51
123
16
48
116
15
45
108
13
41
98
-95
19
57
137
18
56
135
18
55
132
18
53
128
17
51
123
16
48
116
15
45
108
14
41
99
-100
18
56
135
18
55
134
18
54
131
17
53
127
17
51
122
16
48
116
15
45
108
14
41
100
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
Extended capacity kW
Valve
Evaporating temperature °C
Type
10
6
18
44
7
21
50
7
23
54
8
24
58
8
25
61
9
26
62
9
26
63
9
26
63
8
26
62
5
6
17
42
7
20
47
7
22
52
8
23
56
8
25
59
8
25
61
9
26
62
9
26
62
8
26
62
0
5
16
39
6
19
45
7
21
50
7
23
54
8
24
57
8
25
60
8
25
61
8
26
62
8
26
61
10 / 32
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
EX4
EX5
EX6
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities as expansion and liquid injection valves
The following tables provide the capacity of valves at different conditions considering 1.5 bar pressure drop through liquid line:
Condensing
Extended capacity kW
R 744
temperature
8
5
0
-5
10
5
15
36
99
-
12
36
86
237
-
18
55
132
362
12
37
89
244
-
22
68
164
450
19
57
137
376
12
38
90
247
659
0
-5
-10
-15
-10
-15
-20
26
29
31
79
87
94
189
208
225
518
572
617
23
27
29
71
81
90
170
195
215
466
535
589
19
24
27
58
72
83
139
173
198
383
475
544
1023 1267 1452
12
19
24
37
59
73
89
140
174
245
385
477
654 1028 1275
12
19
36
58
87
139
239
382
639 1021
11
35
84
229
613
-20
-25
-30
-35
-40
EX48_35008_EN_R07.doc
Type
Evaporating temperature °C
°C
5
Valve
11 / 32
-25
-30
-35
-40
-45
-50
33
99
238
653
32
96
231
634
30
91
218
598
1598
27
83
199
547
1460
24
72
173
475
1269
19
57
137
376
1003
11
33
79
216
576
34
104
249
683
33
102
244
670
32
98
234
642
1715
30
91
219
601
1604
27
83
198
544
1452
23
71
171
468
1250
18
56
133
365
974
10
30
72
198
528
35
108
257
707
35
106
254
699
34
103
247
677
1809
32
98
234
644
1718
30
91
217
597
1594
27
82
195
536
1431
23
70
166
457
1220
18
53
128
350
935
9
27
64
175
466
36
110
264
726
36
110
263
722
35
107
257
705
1883
34
103
247
678
1809
32
97
233
639
1705
29
89
214
588
1570
26
80
191
523
1398
22
67
161
442
1179
17
51
121
332
887
7
22
53
145
386
37
113
269
740
37
113
269
739
36
111
265
727
1942
35
107
257
705
1881
34
102
245
671
1793
31
96
229
628
1677
29
87
209
574
1532
25
77
185
507
1353
21
64
154
423
1129
16
47
113
310
828
5
16
37
103
275
38
114
273
750
38
115
274
753
37
113
271
744
1987
36
110
264
725
1937
35
106
254
697
1861
33
100
240
660
1761
31
93
223
613
1636
28
85
202
556
1483
24
74
177
486
1298
20
61
146
400
1068
14
43
103
284
759
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
EX4/EX5/EX6/EX7/EX8 Nominal and extended capacities as hot gas bypass regulator
Nominal Capacities, kW
Valve Type
Kv, m3/h
EX4
0.21
EX5
0.68
EX6
1.57
EX7
5.58
EX8
16.95
R 22/R 407C
4.9
16
37
131
399
R 134a
3.4
11
26
92
278
R 404A/R 507
4.6
15
35
126
382
Nominal capacities at +4°C, +38°C bubble point for all refrigerants (+43°C dew point for R407C).
Remarks: EX4, EX5, EX6, EX7 and EX8 must be installed with motor downward in hot gas line applications.
This insures the valve life expectancy.
Extended capacities, kW
Liquid / Condensing temperature
°C
R 22 / R 407C
R 134a
7
23
54
191
581
6.1
20
46
163
495
4.9
16
38
136
414
4.3
14
32
112
340
60 bubble point for all refrigerants
(64 dew point for R407C)
50 bubble point for all refrigerants
(54 dew point for R407C)
40 bubble point for all refrigerants
(45 dew point for R407C)
30 bubble point for all refrigerants
(35 dew point for R407C)
4.9
16
38
135
411
4.3
14
32
115
348
3.7
12
27
95
289
2.8
9
22
78
236
R 404A / R 507
5.8
19
45
161
488
5.5
18
41
147
447
4.9
16
36
130
394
4
13
31
111
336
Valve
type
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX4
EX5
EX6
EX7
EX8
EX6/EX7/EX8 Nominal and extended capacities as suction pressure regulator (evaporator or crankcase)
Nominal Capacities, kW
Valve Type
R 407C
R 22
R 134a
R 404A
Kv, m3/h
EX6
1.57
3.9
4.1
3.1
3.5
EX7
5.58
14
15
11
13
EX8
16.95
42
45
34
38
Nominal capacities at +4°C, +38°C bubble point for all refrigerants (+43°C dew point for R407C) and 0.15 bar pressure drop.
Remarks: EX4, EX5, EX6, EX7 and EX8 must be installed with motor downward in suction line applications.
This insures the valve life expectancy.
Multiply above nominal capacities by following factors to obtain capacities at different pressure drops:
∆P, bar
Correction factor
0.10
0.82
0.15
1.00
0.20
1.15
0.30
1.41
Example:
EX6 provides 3.5 kW at 0.15 bar pressure drop with R404A: 3.5*1.41 = 4.9 kW capacity at 0.3 bar pressure drop.
EX48_35008_EN_R07.doc
12 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities in kW, suction pressure regulator duty
Condensing
R 22
temperature
Extended capacity kW
Valve
Evaporating temperature °C
0
-10
-20
Type
°C
10
5
-30
-40
60
4
13
41
3
12
37
3
11
34
3
9
27
2
7
22
2
5
17
1
4
12
EX6
EX7
EX8
4
15
45
5
16
49
4
13
41
4
15
45
3
12
37
4
13
41
3
10
30
3
11
33
2
8
24
2
9
27
2
6
19
2
7
21
1
5
14
1
5
15
EX6
EX7
EX8
EX6
EX7
EX8
5
17
53
5
19
56
4
16
48
5
17
52
4
14
44
4
15
47
3
12
36
4
13
39
3
9
29
3
10
31
2
7
22
2
8
24
2
5
16
2
6
18
EX6
EX7
EX8
EX6
EX7
EX8
50
40
30
20
Condensing temperature
R 407C
Extended capacity kW
Valve
Evaporating temperature °C
0
-10
-20
Type
Dew point
Bubble point
°C
°C
10
5
64
60
3
12
36
3
11
33
3
10
29
2
8
23
2
6
18
EX6
EX7
EX8
54
50
45
40
4
14
41
4
15
46
3
12
37
4
14
42
3
11
34
3
12
38
2
9
27
3
10
30
2
7
21
2
8
23
EX6
EX7
EX8
EX6
EX7
EX8
35
30
26
20
5
17
51
5
18
55
4
15
46
5
16
50
4
14
41
4
15
45
3
11
33
3
12
36
2
9
26
3
9
28
EX6
EX7
EX8
EX6
EX7
EX8
EX48_35008_EN_R07.doc
13 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities in kW, suction pressure regulator duty
Condensing
temperature
R 134a
Extended capacity kW
Valve
Evaporating temperature °C
5
0
-10
Type
°C
10
60
3
10
30
2
9
27
2
8
24
2
6
18
1
4
13
EX6
EX7
EX8
3
11
34
3
12
38
3
10
30
3
11
34
2
9
27
3
10
30
2
7
21
2
8
23
1
5
15
2
6
17
EX6
EX7
EX8
EX6
EX7
EX8
4
14
41
4
15
45
3
12
37
4
13
40
3
11
33
3
12
36
2
8
26
3
9
28
2
6
19
2
7
21
EX6
EX7
EX8
EX6
EX7
EX8
50
40
30
20
Condensing
temperature
R 404A / R507
-20
Extended capacity kW
Valve
Evaporating temperature °C
0
-10
-20
Type
°C
10
5
-30
-40
60
3
9
29
2
8
26
2
8
23
2
6
18
1
4
13
1
3
10
1
2
7
EX6
EX7
EX8
3
12
36
4
14
42
3
11
32
3
12
38
3
9
29
3
11
34
2
7
23
3
9
27
2
6
18
2
7
21
1
4
13
1
5
16
1
3
9
1
4
12
EX6
EX7
EX8
EX6
EX7
EX8
4
16
48
5
17
53
4
14
43
4
16
48
4
13
39
4
14
44
3
10
31
3
12
35
2
8
25
3
9
28
2
6
19
2
7
21
1
5
14
1
5
16
EX6
EX7
EX8
EX6
EX7
EX8
50
40
30
20
EX48_35008_EN_R07.doc
14 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
EX5/EX6/EX7/EX8 Nominal and extended capacities as condensing pressure regulator and liquid duty
Nominal Capacities, kW
Valve Type
Kv, m3/h
EX5
0.68
EX6
1.57
EX7
5.58
EX8
16.95
R 407C
18
43
153
463
R 22
20
46
162
491
R 134a
18
42
151
458
R 404A
13
30
106
323
Nominal capacities at +4°C, +38°C bubble point for all refrigerants (+43°C dew point for R407C) and 0,35 bar pressure drop.
Multiply above nominal capacities by following factors to obtain capacities at different pressure drops.
0.15
0.20
0.35
∆P, bar
Correction factor
0.65
0.76
1.00
Extended capacities, kW
Condensing
R 22
temperature
°C
60
50
40
30
20
10
0
15
36
128
387
17
41
144
439
19
45
161
488
21
50
177
536
23
54
192
584
15
35
124
377
17
40
141
428
19
44
157
477
21
49
173
525
23
53
188
572
Condensing
R 134a
temperature
°C
60
50
40
30
20
EX48_35008_EN_R07.doc
10
0
14
32
115
350
16
37
133
405
18
42
151
458
20
47
168
512
22
52
186
564
13
31
109
332
15
36
127
387
18
41
145
440
20
46
162
493
22
51
180
546
Extended capacity kW
Valve
Evaporating temperature °C
-10
-20
-30
Type
-40
15
34
120
365
16
36
129
391
19
43
153
465
20
48
169
513
22
52
184
560
13
30
108
328
15
35
124
377
17
39
140
426
19
44
156
472
21
48
171
519
14
33
116
353
17
39
137
416
18
42
149
453
20
46
165
500
22
51
180
547
14
32
112
341
16
36
129
391
17
41
145
439
19
45
160
486
21
49
175
533
EX5
EX6
EX7
EX8
EX5
EX6
EX7
EX8
EX5
EX6
EX7
EX8
EX5
EX6
EX7
EX8
EX5
EX6
EX7
EX8
Extended capacity kW
Valve
Evaporating temperature °C
-10
-20
-30
Type
13
29
104
315
15
34
121
369
17
39
139
422
19
44
156
474
21
49
173
526
12
27
98
296
14
32
115
350
16
37
133
403
18
42
150
455
20
47
167
507
15 / 32
-40
EX5
EX6
EX7
EX8
EX5
EX6
EX7
EX8
EX5
EX6
EX7
EX8
EX5
EX6
EX7
EX8
EX5
EX6
EX7
EX8
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities in kW, condensing pressure and liquid regulator
Condensing
temperature
R 404A/R 507
°C
60
50
40
30
20
Valve
Evaporating temperature °C
-10
-20
-30
Type
10
0
8
19
66
202
11
24
87
264
13
30
106
321
8
17
62
189
10
23
82
250
12
28
101
306
7
16
58
175
9
22
78
236
12
27
96
291
6
15
53
160
9
20
73
220
11
26
91
276
6
13
48
146
8
19
67
205
10
24
85
260
5
12
43
130
8
17
62
189
10
23
80
243
EX5
EX6
EX7
EX8
EX5
EX6
EX7
EX8
EX5
EX6
EX7
EX8
15
35
123
375
14
33
119
360
14
32
114
345
13
30
108
329
12
29
103
312
12
27
97
295
EX5
EX6
EX7
EX8
17
40
141
427
16
38
136
412
16
37
131
397
15
35
125
380
14
34
120
363
14
32
114
346
EX5
EX6
EX7
EX8
Condensing temperature
Dew point
Bubble point
°C
°C
64
60
54
50
45
40
35
30
26
20
EX48_35008_EN_R07.doc
Extended capacity kW
R 407C
10
Extended capacity kW
Evaporating temperature °C
0
-10
-20
-40
Valve
Type
14
32
112
340
13
30
108
327
12
29
103
313
12
28
98
298
EX5
EX6
EX7
EX8
16
37
132
402
15
36
128
388
15
35
123
373
14
33
118
358
EX5
EX6
EX7
EX8
18
43
152
460
18
41
147
446
17
40
142
431
17
38
137
415
EX5
EX6
EX7
EX8
21
48
170
517
23
53
189
573
20
47
166
503
22
52
184
558
19
45
160
487
22
50
179
543
19
44
155
471
21
49
173
526
EX5
EX6
EX7
EX8
EX5
EX6
EX7
EX8
16 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
EX6/EX7/EX8 Nominal and extended capacities for hot gas flow such as heat reclaim application
Nominal Capacities, kW
Valve Type
R 22 / R 407C
R 134a
R 404A/R 507
R 410A
Kv, m3/h
EX6
1.57
11
9
10
13
EX7
5.58
39
33
36
47
EX8
16.95
119
101
108
144
Nominal capacities are at 0.5 bar pressure drops, +4°C evaporating temperature, +38°C bubble point for all refrigerants (+43°C dew
point for R407C) and 0.8 isentropic efficiency of compressor. For other conditions, page 17-20.
Remarks: EX6/EX7/EX8 must be installed with motor downward in hot gas line applications. This insures the valve life expectancy.
Extended capacities, kW
Condensing
Pressure
temperature
drop
°C
bar
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
0.1
4
15
45
4
14
43
4
14
42
4
13
40
4
13
38
3
12
36
3
11
35
3
11
33
3
10
31
3
10
29
3
9
27
2
8
25
2
8
23
EX6
EX7
EX8
0.5
9
32
99
9
31
95
8
30
92
8
29
88
8
28
84
7
26
80
7
25
76
7
24
72
6
22
68
6
21
64
6
20
60
5
18
56
5
17
52
EX6
EX7
EX8
1
13
45
137
12
44
132
12
42
127
11
40
122
11
39
117
10
37
112
10
35
106
9
33
101
9
31
95
8
29
89
8
27
84
7
26
78
7
24
72
EX6
EX7
EX8
0,1
5
16
49
4
16
47
4
15
46
4
15
44
4
14
43
4
14
41
4
13
40
4
13
38
3
12
36
3
11
35
3
11
33
3
10
31
3
10
30
EX6
EX7
EX8
0.5
10
35
107
10
34
104
9
33
101
9
32
98
9
31
95
8
30
91
8
29
88
8
28
84
7
26
80
7
25
77
7
24
73
6
23
69
6
22
65
EX6
EX7
EX8
1
14
49
149
13
48
145
13
46
141
13
45
136
12
43
131
12
42
127
11
40
122
11
38
117
10
37
112
10
35
107
9
33
102
9
32
96
8
30
91
EX6
EX7
EX8
0.1
5
16
50
4
16
49
4
16
47
4
15
46
4
15
45
4
14
43
4
14
42
4
13
40
4
13
39
3
12
37
3
12
36
3
11
34
3
11
33
EX6
EX7
EX8
0.5
10
36
109
10
35
107
10
34
104
9
33
101
9
32
98
9
31
95
9
30
92
8
29
89
8
28
86
8
27
83
7
26
79
7
25
76
7
24
73
EX6
EX7
EX8
1
14
50
152
14
49
148
13
48
144
13
46
140
13
45
136
12
44
132
12
42
128
11
41
124
11
39
119
11
38
115
10
36
110
10
35
105
9
33
101
EX6
EX7
EX8
0.1
5
16
49
4
16
48
4
15
47
4
15
46
4
15
45
4
14
43
4
14
42
4
13
41
4
13
40
4
13
38
3
12
37
3
12
36
3
11
34
EX6
EX7
EX8
0.5
10
35
108
10
35
105
10
34
103
9
33
101
9
32
98
9
31
95
9
31
93
8
30
90
8
29
87
8
28
84
8
27
81
7
26
78
7
25
76
EX6
EX7
EX8
1
14
49
149
13
48
146
13
47
142
13
46
139
13
45
135
12
43
132
12
42
128
12
41
124
11
40
120
11
38
117
10
37
113
10
36
109
10
34
104
EX6
EX7
EX8
60
50
40
30
EX48_35008_EN_R07.doc
R 404A
Extended capacity kW
Valve
Evaporating temperature °C
Type
17 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities kW, hot gas flow such as heat reclaim applications
Condensing
Pressure
temperature
drop
°C
bar
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
0.1
5
16
50
5
16
49
4
16
47
4
15
46
4
15
44
4
14
43
4
14
41
4
13
40
4
13
38
3
12
37
3
12
35
3
11
33
3
10
32
EX6
EX7
EX8
0.5
10
36
110
10
35
107
10
34
104
9
33
101
9
32
97
9
31
94
8
30
91
8
29
87
8
28
84
7
26
80
7
25
77
7
24
74
6
23
70
EX6
EX7
EX8
1
14
50
152
14
49
148
13
47
144
13
46
139
12
44
135
12
43
130
12
41
126
11
40
121
11
38
116
10
37
112
10
35
107
9
34
102
9
32
97
EX6
EX7
EX8
0,1
5
16
49
4
16
48
4
15
47
4
15
45
4
14
44
4
14
43
4
14
41
4
13
40
4
13
39
3
12
37
3
12
36
3
11
35
3
11
33
EX6
EX7
EX8
0.5
10
35
108
10
35
105
9
34
102
9
33
99
9
32
97
9
31
94
8
30
91
8
29
88
8
28
85
8
27
82
7
26
79
7
25
76
7
24
73
EX6
EX7
EX8
1
14
49
148
13
48
145
13
46
141
13
45
137
12
44
133
12
43
129
12
41
125
11
40
121
11
39
117
10
37
113
10
36
109
10
34
105
9
33
100
EX6
EX7
EX8
0.1
4
16
47
4
15
46
4
15
45
4
14
44
4
14
43
4
14
42
4
13
40
4
13
39
4
13
38
3
12
37
3
12
36
3
11
34
3
11
33
EX6
EX7
EX8
0.5
10
34
103
9
33
100
9
32
98
9
32
96
9
31
93
8
30
91
8
29
88
8
28
86
8
27
83
7
26
80
7
26
78
7
25
75
7
24
73
EX6
EX7
EX8
1
13
46
141
13
45
138
12
44
134
12
43
131
12
42
128
12
41
124
11
40
121
11
39
117
11
38
114
10
36
110
10
35
107
10
34
103
9
33
100
EX6
EX7
EX8
0.1
4
15
44
4
14
43
4
14
42
4
14
42
4
13
41
4
13
40
4
13
39
3
12
38
3
12
37
3
12
35
3
11
34
3
11
33
3
11
32
EX6
EX7
EX8
0.5
9
32
96
9
31
94
9
30
92
8
30
90
8
29
88
8
28
86
8
28
84
8
27
81
7
26
79
7
25
77
7
25
75
7
24
72
6
23
70
EX6
EX7
EX8
1
12
43
130
12
42
128
12
41
125
11
40
122
11
39
119
11
38
117
11
37
114
10
36
111
10
35
108
10
34
105
9
33
102
9
32
98
9
31
95
EX6
EX7
EX8
60
50
40
30
EX48_35008_EN_R07.doc
Extended capacity kW
R 134a
Valve
Type
Evaporating temperature °C
18 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities kW, hot gas flow such as heat reclaim applications
Condensing
Pressure
temperature
drop
°C
bar
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
0.1
6
20
59
5
19
58
5
19
57
5
18
55
5
18
54
5
17
53
5
17
51
5
16
50
4
16
48
4
15
47
4
15
45
4
14
44
4
14
42
EX6
EX7
EX8
0.5
12
43
131
12
42
129
12
41
126
11
40
123
11
39
119
11
38
116
10
37
113
10
36
110
10
35
107
10
34
103
9
33
100
9
32
97
9
31
94
EX6
EX7
EX8
1
17
60
183
17
59
179
16
58
175
16
56
171
15
55
167
15
53
162
15
52
158
14
51
154
14
49
149
13
48
145
13
46
140
13
45
135
12
43
131
EX6
EX7
EX8
0,1
5
19
58
5
19
57
5
18
56
5
18
54
5
17
53
5
17
52
5
17
51
5
16
49
4
16
48
4
15
47
4
15
45
4
14
44
4
14
42
EX6
EX7
EX8
0.5
12
42
128
12
41
126
11
40
123
11
40
120
11
39
117
11
38
115
10
37
112
10
36
109
10
35
106
10
34
103
9
33
100
9
32
97
9
31
94
EX6
EX7
EX8
1
17
59
178
16
57
175
16
56
171
15
55
167
15
54
163
15
52
159
14
51
155
14
50
151
14
49
147
13
47
143
13
46
139
13
44
135
12
43
131
EX6
EX7
EX8
0.1
5
18
56
5
18
55
5
18
54
5
17
52
5
17
51
5
16
50
5
16
49
4
16
48
4
15
47
4
15
45
4
15
44
4
14
43
4
14
42
EX6
EX7
EX8
0.5
11
40
123
11
40
120
11
39
118
11
38
115
10
37
113
10
36
110
10
35
108
10
35
105
9
34
103
9
33
100
9
32
97
9
31
94
8
30
92
EX6
EX7
EX8
1
16
56
170
15
55
167
15
54
163
15
53
160
14
52
157
14
50
153
14
49
149
14
48
146
13
47
142
13
46
139
12
44
135
12
43
131
12
42
127
EX6
EX7
EX8
0.1
5
17
53
5
17
52
5
17
51
5
16
50
4
16
49
4
16
48
4
15
46
4
15
45
4
15
44
4
14
43
4
14
42
4
14
41
4
13
40
EX6
EX7
EX8
0.5
11
38
115
10
37
113
10
37
111
10
36
109
10
35
107
10
34
104
9
34
102
9
33
100
9
32
97
9
31
95
9
30
93
8
30
90
8
29
88
EX6
EX7
EX8
1
15
52
159
14
51
156
14
50
153
14
49
150
14
48
147
13
47
144
13
46
141
13
45
138
12
44
134
12
43
131
12
42
128
12
41
124
11
40
121
EX6
EX7
EX8
60
50
40
30
R 22 / R 407C*
Extended capacity kW
Valve
Type
Evaporating temperature °C
*) Condensing temperatures R 407C:
The relation between bubble points and dew points is as follows:
Dew point
°C
Bubble point
°C
64
60
54
50
45
40
35
30
EX48_35008_EN_R07.doc
19 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Extended capacities kW, hot gas flow such as heat reclaim applications
Condensing
Pressure
temperature
drop
°C
bar
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
0.1
6
21
64
6
21
63
6
20
62
6
20
60
5
19
58
5
19
57
5
18
55
5
18
53
5
17
52
5
16
50
4
16
48
4
15
46
4
15
44
EX6
EX7
EX8
0.5
13
47
143
13
46
140
13
45
137
12
44
133
12
43
130
12
41
126
11
40
122
11
39
118
11
38
115
10
36
111
10
35
107
10
34
103
9
32
99
EX6
EX7
EX8
1
19
66
200
18
64
196
18
63
191
17
61
186
17
60
182
16
58
177
16
56
171
15
55
166
15
53
161
14
51
155
14
49
150
13
47
144
13
46
138
EX6
EX7
EX8
0,1
6
22
67
6
22
66
6
21
65
6
21
63
6
20
62
6
20
60
5
19
59
5
19
57
5
18
55
5
18
54
5
17
52
5
17
50
4
16
48
EX6
EX7
EX8
0.5
14
49
149
14
48
146
13
47
143
13
46
140
13
45
137
12
44
133
12
43
130
12
42
126
11
40
123
11
39
119
11
38
115
10
37
111
10
35
108
EX6
EX7
EX8
1
19
69
209
19
67
204
19
66
200
18
64
196
18
63
191
17
61
186
17
60
182
16
58
177
16
57
172
15
55
167
15
53
161
14
51
156
14
50
151
EX6
EX7
EX8
0.1
6
22
67
6
22
66
6
21
65
6
21
63
6
20
62
6
20
60
5
19
59
5
19
58
5
18
56
5
18
54
5
17
53
5
17
51
5
16
50
EX6
EX7
EX8
0.5
14
49
148
13
48
146
13
47
143
13
46
140
13
45
137
12
44
134
12
43
131
12
42
127
11
41
124
11
40
121
11
39
117
11
37
114
10
36
110
EX6
EX7
EX8
1
19
68
207
19
67
203
18
66
199
18
64
195
18
63
191
17
61
187
17
60
182
16
59
178
16
57
173
16
55
168
15
54
164
15
52
159
14
51
154
EX6
EX7
EX8
0.1
6
21
65
6
21
64
6
21
63
6
20
61
6
20
60
5
19
59
5
19
58
5
19
56
5
18
55
5
18
53
5
17
52
5
17
51
5
16
49
EX6
EX7
EX8
0.5
13
47
143
13
46
141
13
45
138
13
45
135
12
44
133
12
43
130
12
42
127
12
41
124
11
40
121
11
39
118
11
38
115
10
37
112
10
36
109
EX6
EX7
EX8
1
18
65
199
18
64
195
18
63
192
17
62
188
17
61
185
17
60
181
16
58
177
16
57
173
16
56
169
15
54
165
15
53
160
14
51
156
14
50
152
EX6
EX7
EX8
60
50
40
30
EX48_35008_EN_R07.doc
R 410A
Extended capacity kW
Valve
Evaporating temperature °C
Type
20 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Application of control valves in systems
The following schematics show the arrangement of integrated valves for different applications.
Legends:
TC
Pump
Thermo Expansion valve
Compressor
Condenser/Evaporator
P
Pressure transmitter
T
Temperature sensor
Flow direction
Check valve
Plate heat exchanger
Sight glass
Liquid Receiver
Solenoid valve
Suction accumulator
Four way reversing valve
Filter dryer
Overview applications:
Application 1: Expansion valve in cooling system
Application 2: Bi-Flow expansion valve in heat pump (except EX8)
Application 3: Expansion valve in heat pump (one valve)
Application 4: Expansion valve in heat pump (two valves)
Application 5: Expansion valve as liquid injection valve for desuperheating
Application 6: Expansion valve as liquid injection valve for subcooling
Application 7: Capacity control by means of hot gas bypass
Application 8: Capacity control by means of suction pressure throttling
Application 9: Crankcase pressure control
Application 10: Head pressure control
Application 11: Liquid level control
EX48_35008_EN_R07.doc
21 / 32
page
22
22
23
23
24
24
25
25
26
26
27
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Application 1: Expansion valve in cooling system
2
EC3-X33
1
(1) = Expansion Valve
(2) = Superheat controller EC3-X33
Application 2: Bi-Flow expansion valve in heat pump (except EX8)
2
EC3-X33
1
(1) = Bi-Flow Expansion Valve
(2) = Superheat controller EC3-X33
EX48_35008_EN_R07.doc
22 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Application 3: Expansion valve in heat pump (one valve)
2
EC3-X33
1
(1) = Expansion Valve
(2) = Superheat controller EC3-X33
Application 4: Expansion valve in heat pump (two valves)
1
1
(1) = Expansion Valve, heating mode
(2) = Expansion Valve, cooling mode
EX48_35008_EN_R07.doc
23 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Application 5: Expansion valve as liquid injection valve for desuperheating
4-20mA/0-10V
1
T
2
3
TC
(1) = Temperature Controller
(2) = Stepper motor driver EXD-U00
(3) = Electrical Control Valve
Application 6: Expansion valve as liquid injection valve for subcooling
4-20mA/0-10V
1
2
3
T
TC
(1) = Temperature Controller
(2) = Stepper motor driver EXD-U00
(3) = Electrical Control Valve
EX48_35008_EN_R07.doc
24 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Application 7: Capacity control by means of hot gas bypass
2
3
4-20mA/0-10V
5
1
T
TC
4
Remarks:
(1) = Temperature Controller
(2) = Check Valve: It is important to install a check valve just
after T-connection as shown. Check valve will not allow return
of liquid refrigerant from condenser through electrical control
valve in to the evaporator during power interruption to system.
(3) = Hot gas bypass valve must be installed with motor
downward. This insures the valve life expectancy.
(4) = Liquid Distributor must be selected properly for hot gas
mass flow.
(5) = Stepper motor driver EXD-U00
Application 8: Capacity control by means of suction pressure throttling
1
T
4-20mA/0-10V
4
TC
2
Remarks:
(1) = Temperature Controller
(2) = Evaporator temperature regulator. EX6, EX7 and EX8
must be installed with motor downward in suction line
applications. This insures the valve life expectancy.
EX48_35008_EN_R07.doc
(3) This application may require additional liquid injection to
suction line for desuperheating of compressor by means of
suction line superheat control or discharge line temperature
control. Please consult Alco Controls for more details.
(4) = Stepper motor driver EXD-U00
25 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Application 9: Crankcase pressure control
1
4-20mA/0-10V
P
3
TC
2
Remarks:
(1) = Pressure Controller
(2) = Crankcase pressure regulator. ECVs must be installed
with motor downward in suction line applications. This insures
the valve life expectancy.
(3) = Stepper motor driver EXD-U00
Application 10: Head pressure control
P
2
1
3
4-20mA/0-10V
TC
(1) = Pressure Controller
(2) = Condensing pressure regulator
(3) = Stepper motor driver EXD-U00
EX48_35008_EN_R07.doc
26 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Application 11: Liquid level control
4-20mA/0-10V
1
3
4-20mA
4-20mA/0-10V
3
2
1
4-20mA
2
(1) = Level Controller
(2) = Liquid level sensor
(3) = Stepper motor driver EXD-U00
Note: ECVs are not released for use with ammonia.
EX48_35008_EN_R07.doc
27 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Driver and controller
In contrary to thermo-expansion and regulator valves, stepper
motor driven valves are not self operated actuators and require:
a stepper motor driver which generates the digital pulse
sequence needed to move the stepper motor in clockwise
or counter clockwise direction
an algorithm which determines the opening of the valve as
a function of system parameters and conditions.
Alco Controls offers several solutions for this task:
EC3-X33 Superheat controller as stand alone for all
applications and EC3-X32 Superheat controller for use in
TCP/IP networks. The modules contain all required algorithms
for full operation of ALCO ECVs. For further details please refer
to EC3X33 or EC3X32 technical data sheet.
EC3-33x Cold Room Controller is a digital temperature
controller primary for refrigeration applications such as cold
rooms. It features temperature control, superheat control and
defrost, compressor and fan management where applicable.
For further details please refer to EC33x technical data sheet.
EXD-U Universal driver is a stepper motor driver which uses
an analogue input signal to define the valve opening. It enables
the operation of EX4/EX5/EX6/EX7/EX8 as:
• Electronic expansion valve
• Capacity control by means of hot gas bypass or evaporating
pressure regulator
• Crankcase pressure regulator
• Condenser pressure regulator
• Liquid level actuator
• Liquid injection valve
The input signal for the driver module can be 4…20mA or
0…10V. The output pulses provide the proportional
opening/closing of EX4/EX5/EX6/EX7/EX8 and consequently
the control of liquid or vapour refrigerant mass flow. The
universal driver module can be connected to any controller
which provides the analogue signal. This gives system
manufacturers the extreme flexibility to use any desired
controller in conjunction with the universal driver module to
achieve different functionality. For further details please refer to
EXD-U technical data sheet.
The patented valve control module VCM is a hybrid integrated
circuit, which provides the superheat algorithm and the stepper
motor driver to those customers, who want to integrate the
valve control into their own system controller. This solution is
mainly for OEMs having serial mass production systems.
The following information is for those customers who want
to develop their own driver/controller/algorithms:
2) Valve
The gate type valve is optimised to provide a wide range of
capacity with a linear relation between flow and positioning of
the valve (capacity vs. number of steps). Slide and ports are
made from ceramic for precise flow characteristics, high
resolution and infinite life.
The compliant slide eliminates undesirable horizontal forces
caused by differential pressure (across the valve) to the cage
assembly and shaft of stepper motor. The internal design of the
EX4/5/6/7/8 is patented.
Total valve travel is 750 full steps for EX4/5/6, 1600 steps for
EX7 and 2600 steps for EX8.
A mechanical stop in the fully closed position of the valve acts
as reference point. The controller is reset by driving the valve
towards the fully closed position against the mechanical stop.
By overdriving the valve i.e. applying more than the full number
of steps, it can be assured that the reference point is correct.
Function
1) Motor
A 2-phase bipolar stepper motor drives the EX4/5/6/7/8. This
motor follows the basic operating characteristics of any stepper
motor i.e. the motor will be held in position unless current
pulses from a driver board initiate rotation in either direction.
The direction of the rotation depends on the phase relationship
of the current pulses, the amount of rotation is dependent on
the number of pulses. One pulse will drive the motor one step
i.e. the rotor will move by α=1.8°. Successive pulses will lead to
continuous rotation.
The drive shaft of the rotor is connected to a spindle which
transforms the rotation into linear motion of the valve slide.
1α
0
2α
3α
Pulse
1
2
3
M
Time
closed
Angular rotation (cross section of shaft)
EX48_35008_EN_R07.doc
28 / 32
M
open
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
3) Driving of stepper motor
There are many different options to drive stepper motors like
the one used in the EX4/5/6/7/8. Alco Controls stepper motors
need a driver board with chopper drive function (constant
current), an interface and a controller.
Chopper drive (constant current)
The stepper motor of EX4/5/6/7/8 is a bipolar, 2-phase
permanent-magnet motor and operates with constant DC
current in each phase. A driver board with chopper drive
function feeds a DC current as indicated below to the windings
of the stepper motor.
4
8
10
9
1
7
6
5
Time in ms
Current in A
0,5
2
6
3
0,0
0
0,002
0,004
0,006
0,008
0,01
0,012
0,014
0,016
0,018
0,02
6
4
7
-0,5
8
9
6
10
1
4) Design of customised driver board
A suitable driver board must be selected according to the
electrical data of the stepper motor and based on the following
requirements:
•
Electrical output (four-stage switching sequence, see next
page)
•
The EX4/5/6/7/8 should be operated in full step mode.
•
Stepping rate: 500Hz for EX4/5/6/7/8
Chopper function, current:
•
5
Current
EX4/5/6
EX7
EX8
Operating
500 mA
750 mA
800 mA
Holding
100 mA
250 mA
500 mA
6
6
2
3
1
2
3
4
5
6
7
8
9
10
Stainless steel body
Stepper motor
Electrical connector
Cage assembly
Shaft
Welding and/or brazing
Ceramic inlet port
Ceramic slide
Ceramic outlet port
Brass ball
EX48_35008_EN_R07.doc
29 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Sequence for driving of stepper motor and valve
Direction
Valve
Reverse
direction
Number
of steps
Identification code of pins for electrical connections to third party
drivers/controllers
A
B
C
Current direction
D
+
-
+
-
Valve
Step 1
is
is
Step 2
-
+
+
-
opening
closing
Step 3
-
+
-
+
Step 4
+
-
-
+
Remark
↓
↓
The sequence is repeated from step 5 to 8 similar to step 1 to 4
Step 5
+
-
+
-
Step 6
-
+
+
-
Step 7
-
+
-
+
Step 8
+
-
-
+
Remark
The sequence is repeated from step 9 to 12 similar to step 1 to 4
↓
↓
EX4/EX5/EX6/EX7/EX8
identification code of pins
for
electrical connection to
third party drivers/controllers
DIN plug
for
EX8
M12 plug and cable assembly (EX5-xxx)
for
EX4/EX5/EX6/EX7
F
A
B
C
D
EX48_35008_EN_R07.doc
Plug terminal numbers
Cable, wire colour
1
3
-/4
2
White
Black
Blue
Brown
30 / 32
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Technical data
CE marking
EX4/EX5:
EX6/EX7/EX8:
Compatibility
(not released for use with
inflammable refrigerants)
MOPD (maximum operating
pressure differential)
Max. working pressure, PS
Temperature range:
Refrigerant
Ambient
Salt spray test
Humidity
Connections
not required
required, Cat I, Module A
CFCs, HCFCs, HFCs, mineral
and POE lubricants
EX4/EX5/EX6/EX7: 33 bar
EX8: 25 bar
EX4/EX5/EX6/EX7: 45 bar
EX8: 35 bar
TS: -50 to +100°C (at motor)
-40 to +55°C
non-corrosion stainless steel
body
5 to 95% r.H.
Protection accordance
to IEC 529, DIN 40050
EX4/5/6/7: IP68 with Alco supplied
cable connector assembly
EX8: IP65 with DIN plug
Vibration for non-connec- 4g
ted and fastened valve
(0 to 1000 Hz, 1 octave /min.)
Shock
Net weight (kg)
Accessories
Package and delivery
(individual)
20g at 11 ms
80g at 1 ms
0.5 kg (EX4), 0.52 kg (EX5), 0.60 kg
(EX6), 1.8 kg (EX7), 2.5 kg (EX8)
See table on page 2
EX4/5/6/7: without electrical connector
EX8: with DIN plug and a pair of
rotalock connections
External leakage
EX4/EX5/EX6/EX7: ODF
stainless steel fittings
EX8: Rotalock with ODF,
plated fittings
Seat leakage
Stepper motor type
Bi-polar, phase current
by chopper control (constant
current)
Phase inductance
Electrical connection
Reccom. driver supply voltg.
4 pin terminal via plug
24 VDC (nominal)
Step mode
Step angle
Driver supply voltage range
18 … 36 VDC
Total number of steps
Phase current, operating
EX4/EX5/EX6: 500mA max,
-10%
EX7: 750mA ±10%
EX8: 800mA ±10%
EX4/EX5/EX6: 100mA
EX7: 250mA
EX8: 500mA
Stepping rate
EX4/EX5/EX6: 3.5W
EX7/EX8: 5W
Full travel time
≤ 3 gram / year
Positive shut-off as solenoid valve
Electrical data
Holding current
Nominal input power per
phase
Winding resistance per
phase
Reference position
EX48_35008_EN_R07.doc
31 / 32
EX4/EX5/EX6: 30 mH ± 25%
EX7: 20 mH ± 25%
EX8: 22 mH ± 25%
2 phase full step
1.8° per step ± 8%
EX4/EX5/EX6: 750 full steps
EX7: 1600 full steps
EX8: 2600 full steps
500Hz
EX4/EX5/EX6: 13Ohm ±10%
EX7: 8Ohm ±10%
EX8: 6Ohm ±10%
EX4/EX5/EX6: 1.5 seconds
EX7: 3.2 seconds
EX8: 5.2 seconds
Mechanical stop at fully close position
27.09.2006
EX4 / EX5 / EX6 / EX7 / EX8
Electrical Control Valves
Dimensions EX4 / EX5 / EX6 / EX7
Dimensions EX8
Valve Type Ø A x Ø F (ODF)
B
C
D
E
H1
H2
EX4-I21
3/8" x 5/8"
8
45
55
11
113
25
EX4-M21
10 x 16 mm
8
45
55
11
113
25
EX4-U31
16 x 16 mm
(5/8" x 5/8")
11
55
55
11
113
25
EX5-U21
5/8" x 7/8"
(16 x 22mm)
11
55
65
16
113
25
EX5-U31
7/8" x 7/8"
(22 x 22mm)
16
65
65
16
113
25
EX6-I21
7/8" x 1-1/8"
16
65
75
19
113
25
EX6-M21
22 x 28 mm
16
65
75
19
113
25
EX6-I31
1-1/8" x 1-1/8"
19
75
75
19
113
25
EX6-M31
28 x 28 mm
19
75
75
19
113
25
EX7-I21
1-1/8" x 1-3/8"
20
77.5 82.5
23
157
42
EX7-M21
28 x 35 mm
20
77.5 82.5
23
157
42
EX7-U31
1-3/8 x 1-3/8
(35 x 35mm)
23
82.5 82.5
23
157
42
EX8-M21
42 x 42
25
119
117
25
78
EX8-U21
1-3/8 x 1-3/8
(35 x 35mm)
25
119
117
25
78
ALCO CONTROLS is not to be held responsible for erroneous literature
regarding capacities, dimensions, applications, etc. stated herein.
Products, specifications and data in this literature are subject to change
without notice. The information given herein is based on technical data
and tests which ALCO CONTROLS believes to be reliable and which
are in compliance with technical knowledge of today. It is intended only
Emerson Electric GmbH & Co. OHG
ALCO CONTROLS
Heerstraße 111
D-71332 Waiblingen
Germany
Phone ...49-(0)7151-509-0
Fax ...49-(0)7151-509-200
www.eCopeland.com/alcoliterature.cfm
EX48_35008_EN_R07.doc
for use by persons having the appropriate technical knowledge and
skills, at their own discretion and risk. Since conditions of use are
outside of ALCO'S control we can not assume any liability for results
obtained or damages occurred due to improper application.
This document replaces all earlier versions.
Benelux
Denmark & Finland
Eastern Europe, Turkey & Iran
France, Greece, Maghreb
Deutschland, Österreich, Schweiz
Italia
Middle East & Africa
Poland
Russia & Cis
España & Portugal
Sweden & Norway
UK & Ireland
32 / 32
Phone.:
+31 (0)773 240 234
+32 (0)87 305 565
+32 (0)87 305 061
+33 (0)478 668 570
+49 (0)6109 6059 0
+39 02 961 78 1
+97 148 832 828
+48 (0)22 458 9205
+7 495 981 9811
+34 93 4 123 752
+32 (0)87 305 565
+44 (0)1 189 838 000
Fax:
+31 (0)773 240 235
+49 24 08 929 568
+32 (0)87 305 506
+33 (0)478 668 571
+49 (0)6109 6059 40
+39 02 961 78 888
+97 148 832 848
+48 (0)22 458 9255
+7 495 981 9816
+34 93 4 124 215
+49 24 08 929 568
+44 (0)1 189 838 001
27.09.2006
EC3-D7x Digital Superheat Controller
EC3-D72 with TCP/IP communication capability
GB
Operating Instructions
Description
!
Safety instructions:
Read installation instructions thoroughly. Failure to comply can result in
device failure, system damage or personal injury.
• The product is intended for use by persons having the appropriate
knowledge and skills.
• Disconnect all voltages from system before installation.
• Do not operate system before all cable connections are completed.
• Comply with local electrical regulations when wiring.
Note: The EC3-D7x series contains a lead, acid gel rechargeable battery. The
battery must NOT be disposed of with other commercial waste. Instead, it is the
user’s responsibility to pass it to a designated collection point for the safe recycling
of batteries (harmonised directive 98/101/EEC). For further information contact
your local environmental recycling centre.
•
Technical data
Power supply
24VAC ±10%; 50/60Hz; 1A
Power consumption
Plug-in connector
Grounding
Protection class
COM, TCP/IP connection
Connection to optional
local ECD-002
Digital Input; Cooling
demand
25VA max. including EX4 … EX6
Removable screw terminals wire size 0,14 .. 1,5 mm2
6,3 mm spade earth connector
IP20
RJ45 Ethernet
ECC-Nxx or CAT5 cable with RJ45 connectors
Digital Input; Comp2
running
Mounting
The EC3-D7x is designed to be mounted onto a standard DIN rail.
Electrical installation
•
•
Digital input status is dependant to operation of compressor/0-10V input
System
0-10V input from third party
Operating
Digital Inputs
controller
condition
Comp. 1 &
“Cooling demand” ECV remains closed irrespective of
Comp.2 in stop open (0V)
voltage input value
mode
“Comp 2 Running”
open (0V)
ECV active
Comp. 1 in run “Cooling demand” Input =0V: digital valve capacity at
& Comp.2 in
closed (24V) /
10% default capacity.
stop mode)
“Comp 2 Running” When the digital comp. is in by-pass
open (0V)
the ECV will:
Close when capacity is <70%
Be inhibited when the capacity is >70%
Comp 1 &
“Cooling demand” ECV active
Comp. 2 in run closed (24V) /
The ECV will always modulate even
mode
“Comp 2 Running” when the digital compressor is in byclosed (24V)
pass mode.
Comp.1 in stop “Cooling demand” ECV remains closed irrespective of
and Comp. 2 in open (0V) /
voltage input value
run mode starts “Comp 2 Running”
closed (24V)
Digital comp. should always be regarded as base load; compressor 1
Wiring
0/24VAC/DC for stop/start function. EX valve closes
during stop command. Typically thermostat or third
party controller.
0/24VAC/DC typically connected to auxiliary
connection. EX valve control loop remains active
when input is 24V and the digital scroll is idle.
Emerson temperature sensor ECN-N60 or ECN-P60
NTC input; Coil-out
temperature sensor
4-20 mA Analog input
Emerson PT4-07M / PT4-18M / PT4-30M
4-20 mA Analog output For connection to any 3rd party controller with
12/24VDC power supply and appropriate burden
Deviation from input
±8% max
signal
Output alarm relay
SPDT contact 24V AC/DC, 2 Amp inductive load
(If L2 = 1) Activated: During normal operation (no alarm condition)
Deactivated: During alarm condition or power supply is OFF
Output pump down relay SPDT contact 24V AC/DC, 2 Amp inductive load
(If L2 = 1)
Activated: During normal operation
Deactivated: All other conditions
! If the output relays are not utilized, the user must ensure appropriate safety
precautions are in place to protect the system against damage caused by a
power failure.
Output Digital Scroll t
24V or 230V AC output to activate PWM valve on
Digital Scroll
Triac
Stepper motor output for Maximum current 0.6A with nominal 24VDC
EX4…EX6
operating voltage
Ambient temperature
0 … 60°C
range
1 … 25°C (for best battery life time)
> 35°C battery life time < 2 years
! In order to provide system protection in the event of power loss, it is
recommended to change the battery annually.
•
Important: Keep controller and sensor wiring well separated from mains wiring.
Minimum recommended distance 30mm.
Warning: Use a class II category transformer for 24VAC power supply. Do not
ground the 24VAC lines. We recommend using individual transformers for EC3
controller and for 3rd party controllers to avoid possible interference or grounding
problems in the power supply. Connecting any EC3 inputs to mains voltage will
permanently damage the EC3.
•
EC3-D7x is the superheat controller with
TCP/IP connection for stepper motor driven
Alco Electrical Control Valves EX4...EX6
and is optimized to operate with the
Copeland Digital Scroll series utilising a 010V input from a third party controller. The
controller synchronises the PWM digital
compressor solenoid valve with the
superheat controlled by the electrical control valve; EX series. The EC3-D73 has
the same functionality but can only be set-up via the ECD-002 display. It has no
external communication functionality.
Note: This document contains short form instructions for experienced users.
Refer to the electrical wiring diagram for electrical connections.
Do not apply voltage to the controller before completion of wiring.
Ground the metal housing with a 6.3mm spade connector.
EC3-D72_65141_EN_R02.doc
Replacement for R01
A: White wire
B: Black wire
C: Blue wire
D: Brown wire
E: M12 Plug cable assembly EX5-Nxx
for connection to EX4/EX5/EX6
F: 24V/230V Triac output to PWM
Digital Scroll valve
G: Remote control panel, system
controller
H: Alarm relay, dry contact. Relay coil is
not energised at Alarm or power off
!
J:
K:
L:
M:
The use of the relay is essential to
protect the system in case of power
failure if the communications interface N:
O:
or the ECD-002 are not utilized..
I: Digital input 1: “Cooling demand”
(Digital compressor run: (0V/open =
P:
Stop; 24V/closed = Control Start;)
1/4
Transformer Class II, 24VAC
secondary / 25VA min. Model
ECT-323
Third party controller (can use the
suction pressure (4-20mA) analog
output signal from EC3)
Pump down relay, dry contact.
Relay is energized during normal
operation.
Digital input 2: “Comp. 2 running”
(0V/open = Comp2 stop;
24V/closed = Comp2 running
Discharge Temp. Sensor
0-10V Digital Scroll capacity
demand signal from system
controller
ECN-N60 Coil out sensor
PCN: 865 019
11.02.2009
EC3-D7x Digital Superheat Controller
EC3-D72 with TCP/IP communication capability
GB
Operating Instructions
Preparation for Start-up:
Vacuum the entire refrigeration circuit.
Warning: Alco Electrical Control Valves EX4...EX6 are delivered at half open
position. Do not charge system before closure of valve.
• Apply supply voltage 24V to EC3 while the cooling demand digital input is 0V
(open). The valve will be driven to close position.
• After closure of valve, start to charge the system with refrigerant.
•
Possibilities of connecting EC3-D72 to a network or PC
A TCP/IP Controller Readme file is available on the www.emersonclimate.eu
website to provide detailed information about TCP/IP Ethernet connectivity. Please
refer to this file if you need information beyond the contents of this instruction
sheet.
1) Connect the EC3-D72 using the optional ECC-Nxx cable assembly or a standard
CAT5 network cable with RJ45 plugs assembly to a network or router that enables
the controller to receive a dynamic TCP/IP address or
2) Connect the EC3-D72 to a computer using a crossover cable plugged directly
into the Ethernet port. In this case, the TCP/IP address of the computer must be
manually modified to be compatible with the default address of the controller.
Refer to the TCP/IP Controller-Readme file for more details.
Setting and visualising Data: WebPages (recommended method)
Important: Make sure that cooling demand input is 0V (open). Turn the power
supply ON.
Four parameters i.e. refrigerant type (u0), pressure sensor type (uP), valve type (ut)
and control mode can be set only when cooling demand digital input is open (0V)
and the power supply is ON (24V). This feature is for added safety to prevent
accidental damage of compressors and other system components. All other
parameters can be modified at any time.
The EC3-D72 has a TCP/IP Ethernet communication interface enabling the
controller to be directly connected to a network or a PC via the standard Ethernet
port. The EC3-D72 controller has embedded WebPages to enable the user to
visualise the parameter lists using real text labels.
To view WebPages on the PC, a standard WebBrowser like Internet Explorer® or
Mozilla Firefox and JRE Java Runtime Environment is needed. JRE can be
downloaded at no charge from the www.java.com website.
Open the Internet browser program on the computer and, if EC3-D72 is connected
directly to PC with a crossover cable enter the default TCP/IP address of the
controller (192.168.1.101) into the address line, or the dynamic address from the
DHCP server from network/Router. Refer to the TCP/IP Controller-Readme file if
a specific port is required.
It is possible to identify the dynamic TCP/IP address assigned by DHCP of the
Router or network, refer to the TCP/IP Controller-Readme file.
After a few moments, the default monitoring page should be displayed. If the
browser does not open the default page or display active data, the user should
check the Internet browser “Option” configuration. Refer to the TCP/IP ControllerReadme file.
After the parameters have been modified, the complete list of settings can be saved
to the memory of the computer and used later to upload into another controller.
This can save a considerable amount of time when using multiple controllers and
over a period of time, a library can be created containing the parameter lists for
equipment for different applications.
It is also possible to display live graphical data from the controller. Superheat,
evaporating pressure, coil-out temperature and evaporating temperature are
available on a 10 minutes rolling chart. Refer to the TCP/IP Controller-Readme file
for a complete description of the features available for the TCP/IP series of
controllers.
Alternative procedure for parameter modification using ECD-002
Note: Some of the functions/parameters (manual control and TCP/IP
configuration) cannot be modified when using ECD-002 comparing to a set-up by
PC via TCP/IP. Warning: All alarms are disabled during manual control. We do
not recommend unattended operation of system during manual control.
The parameters can be accessed via the 4-button keypad. The configuration
parameters are protected by a numerical password. The default password is “12”.
To select the parameter configuration:
• Press the PRG button for more than 5 seconds
A flashing 0 is displayed
• Press or until the password is displayed (default 12).
If the password was changed, select the new password
• Press SEL to confirm password
• Press or to show the code of the parameter that has to be changed;
• Press SEL to display the selected parameter value;
• Press or to increase or decrease the value;
• Press SEL to temporarily confirm the new value and display its code;
or to show..."
Repeat the procedure from the beginning "press
To exit and save the new settings:
Press PRG to confirm the new values and exit the parameters modification
procedure.
To exit without modifying any parameters:
Do not press any button for at least 60 seconds (TIME OUT).
Special Functions:
The Special Functions can be activated by:
• Press and together for more than 5 seconds.
A flashing 0 is displayed.
• Press or until the password is displayed (default = 12).
If password was changed, select the new password.
• Press SEL to confirm password
A 0 is displayed and the Special Function mode is activated.
or
to select the function. The number of special functions is dynamic
• Press
and controller dependent. See list below.
0: Reset controller to factory settings (this action is possible only when digital
input is 0V i.e. open)
1: Displays the current TCP/IP address
2: Assign temporary 192.168.1.101 as TCP/IP address if EC3-D72 has
different address
• Press SEL to activate the function without leaving the special function mode.
• Press PRG to activate the function and leave the special function mode.
ECD-002 display/keypad unit (LEDs and button functions)
Blinking: valve is opening
ON: valve is fully open
Blinking: valve is closing
ON: valve is fully close
The Monitoring and Alarm WebPages are read only and therefore it is not
necessary to enter a username or password. A username and password will be
requested upon the initial request to any of the other WebPages. The factory
default settings are :
Username: “EmersonID” , Password: “12”
The default settings may be modified on the Display configuration page.
Press the tabs at the top of the Monitoring page with a left click of the mouse
button to enter the respective Webpage.
The parameters will be visualised in real text together with the program code as
defined in the parameter list below.
EC3-D72_65141_EN_R02.doc
Replacement for R01
Parameters setting/saving
ON: demand
OFF: no demand
Blinking: pump
down
ON: alarm
OFF: no alarm
Next parameter/
value (higher)
Not applicable
for the EC3-D72
Prg & Sel (5 sec)
Manual reset for
blinking alarm codes
2/4
Next parameter/
value (lower)
Selecting/confirming
PCN: 865 019
11.02.2009
EC3-D7x Digital Superheat Controller
EC3-D72 with TCP/IP communication capability
GB
Operating Instructions
button
Field
Min Max Factory
setting
setting
Password
1
199
12
System refrigerant
0
7
4
0 = R22;
1 = R134a; 2 = R507; 3 = R404A; 4 = R407C;
5 = R410A; 6 = R124; 7 = R744 (subcritical application)
Installed pressure sensor type
0
2
0
0 = PT4-07M (for R22/R134a/R507/R404A/R407C/R124)
1 = PT4-18M (for R410A)
2 = PT4-30M (for R744, subcritical)
Installed valve type
1
3
2
1 = EX4; 2 = EX5; 3 = EX6
Start valve opening (%)
10 100
50
Start opening duration (second)
1
30
5
Low superheat alarm function
0
2
1
0 = disable (for flooded evaporator)
1 = enable auto reset
2 = enable manual reset
Cut-out at 0.5K (if it maintains 1 min.); Cut-in immediately at 3K
Superheat set-point (K)
If uL enabled (auto or manual)
3
30
6
If uL disabled
0.5
30
6
MOP function
0
1
1
0 = disable 1 = enable
MOP set-point (°C) saturation
*
*
X
temperature
Factory setting is according to selected refrigerant (u0):
+13°C for R22
+15°C for R134a
+7°C for R507
+7°C for R404A +15°C for R407C
+15°C for R410A
+50°C for R124
-5°C for R744
Units conversion
0
1
0
0 = °C, K, bar
1 = °F, R, psig
(Psig values are divided by 10. Example: Display 12.5 is 125 psig)
Value to show
0
4
0
0 = Measured superheat (K) 1 = Measured evaporator pressure (bar)
2 = Valve opening (%)
3 = Measured coil-out temp. (°C)
4 = Calculated evaporating temperature (°C) from the pressure
5 = Compressor capacity in %
Superheat control mode
0
1
0
0 = Standard, 1 = Slow
High superheat alarm function
0
1
0
0 = disable, 1 = enable auto reset
High superheat alarm setpoint
16
40
30
High superheat alarm delay, min.
1
15
3
Freeze protection cut-out, °C
-40 40
0
Freeze protection cut-in, °C
-37 43
3
Freeze protection alarm function
0
2
0
0 = disable, 1 = enable auto-reset,
2 = enable manual reset
Freeze protection alarm delay, sec.
5
199
30
Pump-down function
0
1
0
0 = disable, 1 = enable auto-reset
Pump-down cut-out, barg
-0,5 18
0.5
Pump-down time delay, sec.
0
199
30
Low pressure alarm function
0
2
0
0 = disable, 1 = enable auto-reset,
2 = enable manual reset
Low pressure alarm cut-out, barg
-0,8 17,7
0
Low pressure alarm delay, sec.
5
199
5
Low pressure alarm cut-in, barg
-0,5 18
0.3
Code Parameter description and choices
H5
u0
uP
ut
uu
u9
uL
u5
u2
u3
┌┘5
┌┘1
u4
uH
uA
ud
P2
P3
P4
P5
P6
P7
P8
P9
PA
Pb
Pd
Code Parameter description and choices
Min
Max Factory
Field
settings settings
L2 Output logic
0
3
1
0: Alarm & pump down. = normal 1: Alarm = inverse, pump down. = normal
3: Alarm & pump down. = inverse 2: Alarm = normal, pump down. = inverse
b1 Battery error management, when battery
0
3
2
is defective, see below:
Alarm display
Reset possibility after
value
Alarm relay
Valve
recovery/replacement
0
Regulating
1
Ab
Regulating
2
Ab
Signalling Fully close
Auto
3
Ab (blinking) Signalling Fully close
Manual
! When setting b1 to option 0 or 1, the user must ensure appropriate safety
precautions are in place to protect the system against damage caused by a
power failure.
/6 Show decimal point; 0=yes, 1 = no
0
1
0
A6 Maximum discharge temperature; °C
100
140
130
A7 Discharge temp. alarm delay; sec.
0
199
30
F2 Minimum capacity; %
10
100
10
F3 Maximum capacity; %
10
100
100
F6 Scroll Valve, PWM cycle time; sec.
10
20
20
t3 Monitor discharge temperature sensor
0
1
0
0 = no, 1 = Yes
ru 0-10V input filtering; 0 = off, 1 = on
0
1
*) Min. and Max. setting values are dependant to selected type of refrigerant.
Control (valve) start-up behaviour (Parameter uu and u9)
%
uu
EX4/5/6 ≤ 1.5 seconds
Sec.
u9
EC3-X3 BA.cdr
List of parameters in scrolling sequence by pressing
Pump down function (if P6=1 and L2=1)
Cooling demand
status
24V (ON)
0V (OFF)
Alarm condition Pump down relay
NO
NO
0V or 24V
YES
Activate
Deactivate when pressure drops below
P7 and after elapsed time P8
Deactivate instantaneously
Start-up
Start the system and check the superheat and operating conditions. The EC3-D72 is
fully functional without connected PC or keypad/display unit. ECD-002.
Mounting of ECD-002
ECD-002 can be installed at any time also during operation.
• ECD-002 can be mounted in panels with 71x29 mm
cutout
• Push controller into panel cut-out.(1)
• Make sure that mounting lugs are flush with outside of
controller housing
• Insert Allen key into front panel holes and turn
clockwise. Mounting lugs will turn and gradually
move towards panel (2)
• Turn Allen key until mounting lug barely touches
panel. Then move other mounting lug to the same
position (3)
• Tighten both sides very carefully until keypad is
secured. Do not over tighten as mounting lugs will
break easily.
Error/Alarm handling
Alarm
Description
Related
Alarm
code
parameter
relay
Pressure transmitter error
Signalling
E0
Coil-out temperature sensor
Signalling
E1
error
Discharge temp. sensor
Signalling
E3
error
EX4…EX6 electrical
Signalling
AΠ
connection error
EC3-D72_65141_EN_R02.doc
Replacement for R01
Valve
Fully close
Fully close
Regulating
-
What to do?
Requires manual reset
after resolving alarm
No
No
Check wiring connection and measure the signal 4 to 20 mA
Check wiring connection and measure the resistance of sensor
10,000ohms @ 25°C
Check wiring connections and measure the resistance of the
sensor. Also check the status of the I/O configuration (t3)
Check wiring connection and measure the resistance of winding No
Refer to EX series datasheet: EX58e35008
3/4
PCN: 865 019
11.02.2009
EC3-D7x Digital Superheat Controller
EC3-D72 with TCP/IP communication capability
GB
Operating Instructions
Alarm
code
Ab
Alarm
relay
-
Regulating
b1: 2
Signalling
Fully close
Ab blinking
b1: 3
Signalling
Fully close
AE blinking Pump down action
can not accomplished
P6: 1
Signalling
Freeze protection
AF
AF blinking
P4: 1
P4: 2
Signalling
Already
closed by
Pumpdown
command
Fully close
Pumpdown
deactivated
Fully close
Pumpdown
deactivated
Fully close
Pumpdown
deactivated
Fully close
Pumpdown
deactivated
Fully close
Pumpdown
deactivated
-
Ab
Description
Battery error
Related
parameter
b1: 1
AL
AL blinking
Low superheat
(<0,5K)
uL: 1
uL: 2
Signalling
AH
High superheat
uH: 1
Signalling
AP
AP blinking
Low pressure
P9: 1
P9: 2
Signalling
dA
High discharge temp.
A6: alarm
setpoint
Signalling
Valve
What to do?
Battery potentially does not have enough charge to close valve
in case of main power supply interruption. May occur
temporarily with new controllers or after long storage but should
disappear when battery is charged sufficiently (allow 10hrs). If
Ab remains active even when battery is charged, battery may be
defective and should be replaced. (Replacement kit: 807 790).
Allocate the source, which does not let suction pressure drops
below desired set-point
Requires manual reset
after resolving alarm
Yes
Yes
Check the system for cause of low pressure such as insufficient
load on evaporator
No
Yes
Check wiring connection and operation of valve
No
Yes
Check the system
No
Check the system for cause of low pressure such as refrigerant
loss
No
Yes
Check the system
No
Fixed differential =
10°C
No
Data error display –
Data send to the display is out of range. Check temperature and
out of range
pressure sensor.
Note: When multiple alarms occur, the highest priority alarm is displayed until
Message
being cleared, then the next highest alarm is displayed until all alarms are
--- No data to display
The display will show an “---” at start up and when no data is send to ECD-002
cleared. Only then will parameters be shown again.
Er
Checking system operating conditions using local display/keypad ECD-002
The data to be permanently shown on the display can be selected by the user
(parameter ┌┘1). It is possible to temporarily display these values. However this
function is not available in an alarm condition. The display will show for one
second the numerical identifier of the data (see ┌┘1 parameter) and then the selected data.
After 5 minutes, the display will return to the value selected by parameter ┌┘1.
Service / Troubleshooting
Symptom
Operating superheat is several degrees
higher or lower than set-point
Cause
Incorrect signal from pressure or
temperature sensors
Operating superheat is too low i.e.
compressor wet running
Valve is not fully closed
1- Incorrect wiring of ECV
2- Defective sensors
1- The cooling demand digital
input is ON (24V)
2- Wrong ECV selected.
Evaporator is designed to operate
at higher superheat
Wrong wiring between EC3-D72
and valve
Stepper motor driven valves
require synchronization
Unstable superheat (hunting)
Valve opens when EC3 commands to close
and vice versa
Superheat set-point is shifting after several
months of uninterrupted operation or
permanent jumper of 24V digital input
Dimensions EC3-D72/D73
Action
1- Check the sensors
2- Make sure ECN-N60 temperature sensor is used
3- For optimum accuracy, please use:
PT4-07M for R22/R134a/R507/R404A/R407C/R124
PT4-18M for R410A
PT4-30M for R744
4- Make sure the sensor cables are not installed along with other high voltage cables
1- Check the wiring
2- Check the sensor
1- Valve is shut off only when the digital input is turned off (0V)
2- Check the setting of parameter ut
Increase the superheat set-point to a higher value; if system is stable, start to
decreasing gradually checking each time for a stable control
Check the wiring and obey the colour coding: white/black, blue/brown.
Do not apply permanent 24V digital input. Interrupt digital input once every week for
5 seconds if compressor never stops. This has the effect of referencing the valve to the
fully closed position.
ECD-002
Revision applicable to EC3-D72 software release =>114, rev 6
Emerson Electric GmbH & Co OHG - Postfach 1251 - Heerstraße 111 - D-71332 Waiblingen - Germany - Phone .49-(0)7151-509-0 - Fax .49-(0)7151-509-200
www.emersonclimate.eu
EC3-D72_65141_EN_R02.doc
Replacement for R01
4/4
PCN: 865 019
11.02.2009
FANs 930, 930.5, 125, 121
Product/Technical Bulletin A350P
Issue Date 0899
System 350TM A350P Electronic Proportional Plus Integral
Temperature Control
The A350P is an electronic, proportional plus integral
temperature control with analog 0 to 10 VDC and
0 to 20 mA outputs. The control is equipped with
three user-selectable time integration constants and
an adjustable throttling range of 2 to 30F° (1 to 17C°).
Two models cover a setpoint range of -30 to 130°F
(-35 to 55°C) and 90 to 250°F (32 to 121°C).
As are all System 350™ products, the A350P control
is housed in a NEMA 1, high-impact plastic enclosure.
The modular design provides easy, plug-together
connections for quick installation and future
expandability.
Figure 1: A350P Electronic Proportional Plus
Integral Temperature Control
Features and Benefits
❑ Modular Design
Enables stage, display, and power modules to
be purchased and installed as needed
❑ Plug-Together Connectors
Eliminates wiring between modules, which
reduces installation costs
❑ Two Models Cover a Wide
Reduces inventory by encompassing
temperature ranges required to support the
majority of Heating, Ventilation, Air Conditioning,
and Refrigeration (HVAC/R) applications
❑ Minimum Output Adjustable
Tailors the output to the requirements of the
controlled device; can be used to set minimum
valve or damper position
❑ Adjustable Throttling
Enables the user to tune the system for optimum
stable performance
❑ Field-selectable Reverse
Works in heating or cooling applications
❑ Three User-Selectable
Provides selection of the integration constant for
applications requiring proportional plus integral
control
❑ Interchangeable
Increase versatility and serviceability
and 35 mm DIN Rail
Mounting
Setpoint Range of -30 to
250°F (-35 to 121°C)
from 0 to 60%
Range of 2 to 30F° (1 to 17C°)
or Direct Acting Mode
Integration Time Constants
Temperature Sensors
© 1999 Johnson Controls, Inc.
Part No. 24-7664-192, Rev. F
Code No. LIT-930020
1
www.johnsoncontrols.com
A pplication
O peration
The A350P Temperature Control can be used as a
standalone device or in conjunction with plug-together
accessory modules. The addition of S350 Stage
Modules allows for the control of multiple stage
HVAC/R applications. Typical application for the
A350P includes:
The A350P control operates on 24 VAC/VDC and
provides two simultaneous analog outputs:
0 to 10 VDC and 0 to 20 mA. A cover-mounted,
10-segment Light-Emitting Diode (LED) bar graph
indicates percentage of output.
Features include:
•
proportional heating control with staged direct
expansion cooling
•
adjustable setpoint
•
simple temperature control for air handling units
•
adjustable minimum output
•
modulating damper actuators for mixed air control
•
adjustable throttling range (proportional band)
•
simple proportional mixed air control
•
selectable integration time constant
•
selectable Reverse Acting (RA) or Direct Acting
(DA) mode of operation
A typical System 350 Temperature Control setup
includes the following:
IMPORTANT:
A350P Temperature Control
•
A99B Series Temperature Sensor
•
Y350R Power Module (or 24 VAC Class 2
transformer)
•
S350 Stage Modules
•
D350 Digital Temperature Display Module
Module
Connector
Cover Screw
(One of Four)
Setpoint
Dial
Throttling Range
Potentiometer
All System 350 controls are
designed for use only as
operating controls. Where an
operating control failure would
result in personal injury and/or
loss of property, it is the
responsibility of the installer to
add devices (safety, limit controls)
or systems (alarm, supervisory
systems) that protect against, or
warn of, control failure.
Integration
DIP Switch
Fast
Medium
Slow
Off
On
1 2 3 4
•
Integration DIP switch is
shown in proportional-only position.
THROT
MIN
RANGE OUTPUT
Minimum Output
Potentiometer
V
I
SN
VDC
C
24V
LED Indicator
(Percent of Output)
Reverse
Acting (RA)
Direct
Acting (DA)
Operation Mode
Jumper Positions
V: 0-10 VDC Output
I: 0-20 mA Output
SN: Sensor Input
24V: 24 VAC (+)
C: Common (-)
VDC: +5 VDC (not used)
Figure 2: Interior View Showing A350P Control’s Features
2 System 350 A350P Electronic Proportional Plus Integral Temperature Control Product/Technical Bulletin
Minimum Output Adjustment
Throttling Range (Proportional Band)
The minimum output adjustment sets the minimum
voltage or milliampere output provided by the A350P
control. It can be adjusted from 0 to 60% (0 to 6 VDC
or 0 to 12 mA) of the output range.
The throttling range is the range over which a control
is active. Throttling range for the A350P control can be
adjusted from 2 to 30F° (1 to 17C°). Make the
adjustment at the throttling range potentiometer
marked THROT RANGE (see Figure 2).
Example:
A controlled device responding to a 4-20 mA output
would require the minimum output to be adjusted to
20% or 4 mA. (See Figure 3.) The minimum output
adjustment may also be used to set valves or dampers
to minimum positions.
0%
20%
50%
20
Output 10
(mA)
4
Throttling Range
0
0
2
4
6
8 10 12 14 16 18 20
Deviation Above Setpoint (F°)
Integration Function
Proportional-only controls cannot hold a process at the
exact setpoint. A proportional offset is always present
because the control output is 0% at setpoint. Any load
on the system will cause the control point to be offset
from the setpoint. The greater the load on the system,
the further the control point will be offset from the
setpoint. (This is commonly referred to as proportional
offset, and under maximum load this error will
approach the throttling range.)
Some proportional-only controls are designed with
their setpoint located midway through the proportional
band to help compensate for this offset. This results in
a plus/minus error from the setpoint rather than a
single-ended error. Refer to Figure 4.
Figure 3: Output vs. Deviation from
Setpoint for: Minimum Output = 0, 20, and
50%, Throttling Range = 20°F (DA)
Make the adjustment at the minimum output
potentiometer marked as MIN OUTPUT.
(See Figure 2.) For each 10% increase in output, the
next bar on the LED indicator will light (only one bar is
lit at any time).
Note:
Before setting the minimum output
potentiometer, verify that the control reads
zero output (that is, no LEDs are lit).
System 350 A350P Electronic Proportional Plus Integral Temperature Control Product/Technical Bulletin 3
Temperature
Proportional Only Control
System Load
Proportional
Offset
Load Change
Control Point
Follows the Load
Throttling
Range
Setpoint
Time
Proportional Plus Integral Control
Temperature
Proportional
Offset = 0
System Load
Load Change
Integration adjusts the
proportional output to
bring the process to
setpoint regardless of load.
Setpoint
Time
Figure 4: Comparison Between Proportional Only and Proportional Plus Integral Control
The A350P control has an integration feature that
forces the control point to match the setpoint. Over
time, the A350P will control the heating/cooling
equipment to balance the system load at the control
setpoint. (See Figure 4.)
On traditional proportional plus integral controls, the
amount of correction will become too large if the
system load exceeds the capacity of the equipment.
When the actuated device (valve or damper) is fully
open or closed and the setpoint still cannot be
reached, the integration error continues to grow. The
result is called integral windup.
The A350P control avoids integral windup with a
patented circuit that puts a dynamic ceiling on the
integrator. This resets the integration error when the
sensor goes just above the setpoint plus the throttling
range (in DA mode) or just below the setpoint minus
the throttling range (in RA mode). This allows the
process to recover from an out-of-range condition
without a large overshoot.
The A350P control has three field-selectable
integration constants and an off position. The
integration DIP switch selects the integration constant.
(See Figure 2 for location.)
The field-selectable integration constants include:
•
OFF: Switch 1 to On position, all others Off
provides proportional-only operation.
Note:
In open-loop (without feedback) applications,
select OFF (proportional-only) operation.
•
Slow (C3): Switch 2 to On position, all others
Off is the slowest integration constant (26 minute),
and is suitable for most proportional plus integral
applications. Slow is the recommended initial
setting.
•
Medium (C2): Switch 3 to On position, all
others Off selects a 13-minute integration
constant. If the rate of system recovery to setpoint
is sluggish with the control set to slow, and if the
system has enough capacity to drive the process
to setpoint at a faster rate, the medium setting
may be used.
•
Fast (C1): Switch 4 in On position, all
others Off is the fastest integration constant
(6.5 minutes). Use fast only in instances where the
rate of change at the sensor is extremely rapid
and system capacity can compensate for that
rapid change.
4 System 350 A350P Electronic Proportional Plus Integral Temperature Control Product/Technical Bulletin
Reverse or Direct Acting Operation
With the operation jumpers in the Reverse Acting (RA)
position, the analog output increases as the
temperature drops below setpoint. (See Figure 5.)
With the operation jumpers in the Direct Acting (DA)
position, the analog output will increase as the
temperature rises above the setpoint.
Select the RA/DA mode by positioning the operation
jumpers vertically or horizontally. (See Figure 2.)
Position the operation jumpers vertically for RA and
horizontally for DA.
The RA/DA operation jumpers are installed in the RA
mode at the factory.
Note: Dashed areas show throttling range possibilities
from minimum to maximum.
Reverse Acting
10 20
VDC mA
RA
-
0
20 10
10
0
0
30 25 20 15 10 5F°
Setpoint
Throttling Range
Direct Acting
DA
+
0
5 10 15 20 25 30F°
Setpoint
Throttling Range
Figure 5: RA and DA Proportional Bands Shown in
Proportional-Only Mode
A dd-on Modules
The maximum number of add-on modules is listed in
Table 1.
Table 1: Maximum Number of S350 Stage
Modules per A350P
Number of
Number
S350A or
of S350A
S350C
or S350C
Modules
Stage
(with
Modules
Allowed One S350P)
Allowed
Power
Source
Number of
S350A or
S350C
Modules
(with
Two S350Ps)
Allowed
Y350R
4
2
0
External
Class 2
Transformer
9
8
7
S350A On-Off stage modules receive power, setpoint,
and sensor input from the A350P control. S350A stage
modules perform switching functions based on the
control’s setpoint and sensor information, as well as
the offset and differential selected at the S350A stage
module.
For more information on these modules, refer to the
TM
System 350 S350 Temperature, S351 Humidity,
and S352 Pressure On/Off Stage Modules
Product/Technical Bulletin (LIT-930080).
S350C Slave Stage Module
S350C slave stage modules receive power and sensor
input from the A350P control. S350C slave stage
modules perform switching functions based upon the
control’s sensor information, as well as the setpoint
and differential selected at the S350C stage module.
mA VDC
10
S350A On-Off Stage Modules
For more information on these modules, refer to the
TM
System 350 S350C Temperature Slave Stage
Module Product/Technical Bulletin (LIT-930084).
S350P Proportional Stage Modules
S350P proportional stage modules receive power,
setpoint, and sensor input from the A350P control. The
S350P stage module responds with an analog 0 to
10 VDC and 0 to 20 mA output signal. This is based
upon the control’s setpoint and sensor information, as
well as the offset, throttling range, and minimum output
selected at the S350P stage module.
For more information on these modules, refer to the
TM
System 350 S350P Proportional Plus Integral
Temperature Stage Module Product/Technical Bulletin
(LIT-930086).
System 350 A350P Electronic Proportional Plus Integral Temperature Control Product/Technical Bulletin 5
D imensions
3/16 (4)
Mounting Slots
for No. 6 Screws
1/2 (13)
5 (127)
2 15/16
(75)
1 9/16
(40)
A350P
4 (102)
2 3/8 (61)
DIN
Rail Mount
7/16 (11)
1 3/16 (31)
3 (76)
Sensor
1/4 (6)
9 3/4 (248)
2 3/8 (61)
2 (50)
7/8 (22)
Conduit
Hole
7/8
(22)
Figure 6: A350P Control and Sensor Dimensions, in. (mm)
I nstallation and Wiring
Celsius Scale Conversion
A Celsius scale throttling range decal is included with
the A350P control. If the Celsius scale is desired:
1. Locate the throttling range and minimum output
potentiometers on the main PC board.
(See Figure 2.) Carefully remove the knobs and
the existing decal.
2. Apply the Celsius scale decal in the same place as
the original decal.
The A350P Temperature Control is housed in a
compact NEMA 1 plastic enclosure designed for
standard 35 mm DIN rail mounting. Four key-slot
mounting holes on the back of the control case are
provided should surface mounting be required. If a
Y350R is used, it should be mounted immediately to
the right of the control. Any S350 modules would
follow on the right, with the D350 being the last module
mounted, also on the right.
Note:
3. Rotate both knob stems completely
counterclockwise (CCW).
4. Reinstall the potentiometer knobs so the arrows
point to the minimum values.
!
When mounting any System 350 module to
rigid conduit, attach the hub to the conduit
before securing the hub to the control
enclosure.
WARNING: Risk of Electrical Shock.
Disconnect power supply before
making electrical connections to
avoid possible electrical shock or
equipment damage.
6 System 350 A350P Electronic Proportional Plus Integral Temperature Control Product/Technical Bulletin
Wiring Terminals
Sensor Connection
Install all wiring to conform to the National Electrical
Code and local regulations. For maximum electrical
rating of control, refer to the label inside the control
cover. Terminals will accept 12 to 26 AWG wire. Use
only copper conductors.
Shielded cable is not generally required for sensor
wiring on runs of less than 50 feet. When using
shielded cable, isolate and tape the shield at the
sensor. Connect the shield to Terminal C on the
A350P control.
1. Use a 1/8 in. (3 mm) flat-blade screwdriver to push
the clamp arm down.
Refer to Table 3 for the maximum recommended cable
lengths for particular sizes of wire.
2. Insert the appropriate wire into the opening.
Refer to Table 2 for terminal designations.
Table 3: Maximum Recommended
Sensor Cable Lengths
3. Release the clamp arm to secure the wire.
See Figure 7.
•
V
I
V
0 to 10 VDC output
I
0 to 20 mA output
SN
Temperature sensor input
14 AWG
800
244
16 AWG
500
152
18 AWG
310
94
20 AWG
200
61
22 AWG
124
38
•
The sensor must be mounted so that it can
accurately sense the temperature of the controlled
medium.
Table 4: A350P Controls And Sensors
Control
Sensor Included
Sensor Lead Length is 9-3/4 in. (0.25 m)
A350PS-1C
A99BB-25C; Range: -40 to 212°F
(-40 to 100°C)
Common for power supply,
temperature sensor, and outputs
A350PS-1CM
A99BB-25C; Range: -40 to 212°F
(-40 to 100°C)
24 Volts AC
A350PS-2C
A99BC-25; Range: -40 to 248°F
(-40 to 120°C)
A350PS-2CM
A99BC-25; Range: -40 to 248°F
(-40 to 120°C)
A350PT-1C
No Sensor Included
A350BA-2C
A99BC-25; Range: -40 to 248°F
(-40 to 120°C)
VDC
5 VDC power supply (not used)
C
24V
Note:
Description
Meters
The sensor must be connected to Terminals SN
and C. (See Figure 2.) The sensors are not
polarity sensitive.
Table 2: Terminal Designations
Terminal
Feet
Various A99B Series Temperature Sensors and
mounting hardware are available for use with
A350P Series controls.
SN VDC
Figure 7: Cage Clamp Terminal Block
Shielded Cable Length
Wire
Gauge
Output signals from the A350P control vary
from 0 to 10 VDC and 0 to 20 mA. (Both
outputs can be used simultaneously.)
Connections can be made to both the V and
I terminals, allowing the control to drive
two outputs from the same RA or DA ramp
simultaneously. This feature can be used to
drive motor actuators of different types in a
single application.
•
For more information regarding sensor options
and installation, refer to the A99B Series
Temperature Sensors Product/Technical Bulletin
(LIT-125186).
System 350 A350P Electronic Proportional Plus Integral Temperature Control Product/Technical Bulletin 7
A djustments
Follow this procedure to set up the A350P control for
the types of operation desired.
1. Remove its cover by loosening the four captive
cover screws. (See Figure 2.)
2. Set the RA/DA operation jumpers to the desired
mode of operation. Position the operation jumpers
vertically for RA (Reverse Acting) or horizontally
for DA (Direct Acting). (See Figure 2.)
3. Adjust the throttling range potentiometer to desired
setting. Rotate Clockwise (CW) to increase the
throttling range.
5.
Make sure the system is stable in the proportional
mode before selecting integration. Refer to the
Checkout Procedure section.
6.
Reinstall the cover and secure in place with the
four captive cover screws.
7.
Adjust the setpoint dial to the desired setpoint.
If using the D350 Display Module, press and hold
the setpoint button on the D350 while rotating the
setpoint dial.
Note:
Notes: Included with the control is a Celsius scale
throttling range decal. If the Celsius scale is
desired, refer to the Celsius Scale Conversion
section for decal installation instructions.
If the A350P is to be used in proportional plus
integral control, the initial throttling range
adjustment is seldom set below 6F° (3C°).
A narrow proportional band used in
conjunction with the integration may result in
unstable control.
4. If minimum output is required, set the minimum
output potentiometer (see Figure 2) to the desired
position. The 10-segment front LED panel or a
voltmeter can be used to read the minimum
output. (The minimum setting for the control is
designated by the 0 on the decal.)
Notes: Before adjusting the minimum output
potentiometer, verify that the control reads
zero output (that is, no LEDs are lit).
For each 10% increase in output, the next
bar will light on the LED bar graph (only
one bar is lit at anytime). In a milliampere
application, each bar equals 2 mA. In a
voltage application, each bar equals 1 VDC.
(Refer to Figure 3.)
Example:
To set the control for a minimum output of
4 mA, turn the minimum output potentiometer
clockwise until the second LED segment just
lights.
The control’s setpoint is factory calibrated at
midscale to a tolerance of ±1F° (0.6C°). The
setpoint tolerance at the extreme ends of the
setpoint scale may be ± 4F° (2.2C°). The
D350 Display Module is unaffected by this
tolerance shift. Use the D350 for the most
accurate setpoint selection.
C heckout Procedure
Follow this procedure to verify the A350P control is
connected and functioning properly.
1.
Before applying power, make sure that the
installation and wiring connections are according
to job specifications.
2.
Set up the system for proportional mode
(Integration = OFF), and make any necessary
adjustments to the setpoint, throttling range, and
minimum output. Then select Reverse or Direct
Acting mode.
3.
After making adjustments and electrical
connections, apply power to the system, and
observe it for stable operation.
4.
If integration is required, select the fast (C1),
medium (C2), or slow (C3) integration constant.
Slow is the recommended initial setting. (Refer to
the Integration Function section.)
5.
Put the system back into operation. If instability
occurs, consider increasing the throttling range.
8 System 350 A350P Electronic Proportional Plus Integral Temperature Control Product/Technical Bulletin
T roubleshooting
If the control system does not function properly, verify
that the proper operation mode is selected on each
module (DA or RA), and perform the following
procedures to determine the cause of the problem:
1. Check for proper voltages on the A350P control.
a. Connect a digital voltmeter (DVM) between
Terminals 24V (+) and C (-) located on the
A350P’s terminal block. (See Figure 2.)
If an external transformer is used, select AC
volts on the DVM. Verify that the voltage is
between 20 and 30 VAC.
If a Y350R Power Module is used, select DC
volts on the DVM. Verify that the voltage is
between 16 and 38 VDC.
If an external DC power supply is used, select
DC volts on the DVM. Verify that the voltage is
between 22 and 29 VDC.
b. If the DVM reading is within the indicated
voltage range, select DC volts on the DVM
(DVM must be accurate to +/-0.01 VDC), and
connect the (+) lead to Terminal VDC and the
(-) lead to Terminal C.
2. Check sensor for proper resistance at a given
temperature. (The resistance across the sensor
changes with the temperature of the sensor.)
a. Disconnect power from the A350P control.
b. Disconnect the sensor from the control and
measure the resistance across sensor leads.
c.
d. Refer to Figure 8 to determine the optimal
resistance for the measured temperature.
e. If the measured resistance varies substantially
from the optimal resistance for that
temperature, the sensor or wiring must be
replaced.
f.
c.
If the DVM voltage is below 4.9 VDC, check
the control using the following procedure.
Disconnect all loads from the A350P control.
(If in Direct Acting mode with power on, the
system will go to full output when the sensor is
disconnected. Thus, ensure that any loads are
disconnected before disconnecting the
temperature sensor.)
Disconnect the temperature sensor
completely, and recheck the DVM voltage.
If the DVM voltage rises to a value between
4.9 and 5.1 VDC, replace the sensor.
If the DVM voltage is still below 4.9 VDC,
replace the A350P control.
If the sensor’s resistance conforms to the
chart in Figure 8, reconnect the sensor to the
control.
g. Reconnect power to the control.
Note:
If the DVM voltage is between 4.9 and
5.1 VDC, proceed to Step 2.
If the DVM voltage is above 5.1 VDC, replace
the A350P.
When measuring the sensor’s resistance, use
an accurate thermometer to measure the
temperature at the sensor.
°F
The sensor reading indicated by the D350
may differ somewhat from thermometer
readings due to sensor tolerances, time
constants, thermometer accuracy, and other
factors.
Temperature
°C
260
120
240
220
100
200
180
80
160
140
60
120
40
100
80
20
60
40
0
20
0
-20
-20
-40
-40
500 700 900 1100 1300 1500 1700 1900 2100
Resistance (Ohms)
Figure 8: Temperature vs. Resistance Chart for the
A99B Series Sensor
System 350 A350P Electronic Proportional Plus Integral Temperature Control Product/Technical Bulletin 9
3. Check the A350P control for proper operation.
Note:
Perform Steps 1 and 2 first.
a. Reconnect the sensor to the control and
re-apply power.
b. Turn the throttling range and the minimum
output to minimum by turning both
potentiometers counterclockwise.
c.
Switch off the integration.
d. Select the RA mode.
e. Connect the DVM (+) lead to the A350P
control’s Terminal SN and the (-) lead to
Terminal C.
If the sensor voltage is less than 1.8 VDC on
model A350PS-1C or less than 2.3 VDC on
model A350PS-2C, go to Step 3g.
f.
If the voltage is greater than 1.8 VDC on
model A350PS 1C or greater than 2.3 VDC on
model A350PS-2C, adjust the setpoint to
120°F (49°C) on model A350PS-1C or 240°F
(116°C) on model A350PS-2C.
The output Terminal V should be less than
0.1 VDC, and all LEDs in the bar graph display
should be off. If not, replace the A350P.
1. Adjust the minimum output to the
maximum by turning the potentiometer
CW. As the potentiometer is turned CW,
the LEDs in the bar graph should turn on
from left to right until the fifth or sixth bar is
on. If not, replace the A350P control.
2. Adjust the minimum output to zero again,
and select the DA mode.
g. If the sensor voltage is above 1.1 VDC
on A350PS-1C or above 1.6 VDC on
A350PS-2C, adjust the setpoint to match the
actual temperature (Ts). The output Terminal
V should be less than 0.1 VDC, and all LEDs
in the bar graph should be off.
Note:
Some tolerance error is present between the
setpoint scale and the setpoint knob pointer.
Refer to the Adjustments section.
1. Make sure the A350P control is in RA
mode.
2. Increase the setpoint in increments of 2F°
(1C°).
3. As the setpoint is increased, the control’s
Terminal V output voltage should go from
0 to 10 VDC, the Terminal I output current
should go from 0 to 20 mA, and the LEDs
should turn on, one at a time from left to
right.
4. If the LEDs do not turn on and if the
outputs of terminals V and I do not change
as described above, replace the control.
h. Readjust the A350P control to the desired
control settings.
R epairs and Replacement
Do not make field repairs or perform calibration.
A99B Temperature Sensors and replacement controls
are available through the nearest Johnson Controls
representative. (See Tables 5 and 6 for ordering
information.)
3. If the right most LED in the bar graph is on
(Terminal V = 10 VDC, Terminal I = 20 mA),
go to Step 3h. If the LED is not on, replace
the A350P.
10 System 350 A350P Electronic Proportional Plus Integral Temperature Control Product/Technical Bulletin
O rdering Information
Table 5: System 350 Products
Item
Product Code Number
A350P Proportional Plus Integral
Temperature Controls
Description
A350PS-1C
Range:
-30 to 130°F (-35 to 55°C)
Throttling Range: 2 to 30 F° (1 to 17C°)
(Includes the A99BC-25C Temperature Sensor)
A350PS-2C
Range:
90 to 250°F (30 to 120°C)
Throttling Range: 2 to 30 F° (1 to 17C°)
(Includes the A99BC-25C Temperature Sensor)
A350PT-1C
Range:
-30 to 130°F (-35 to 55°C)
Throttling Range: 2 to 30F° (1 to 17C°)
(Sensor not included)
Display Modules
D350AA-1C
D350BA-1C
Digital Temperature Display Module (Fahrenheit Scale)
Digital Temperature Display Module (Celsius Scale)
On/Off Stage Modules
S350AA-1C
S350AB-1C
Fahrenheit Scale
Celsius Scale
Slave Stage Module
S350CC-1C
Dual Scale (°F and °C)
Proportional Stage Module
S350PQ-1C
Dual Scale (°F and °C)
Power Module
Y350R-1C
120 or 240 VAC, 50/60 Hz Input, Rectified Class 2,
24 VAC Output
Table 6: System 350 Accessories
Item
Product Code Number
Description
Wall Mount Plate
TE-6001-4
Includes sensor mounting clip
Cover
T-4000-2644
For wall mount plate
Mounting Clip
A99-CLP-1
Surface mounting clip for the A99B Temperature Sensor
Duct Mounting
TE-6001-1
Duct-mounting hardware with handy box
Duct Mounting
TE-6001-11
Duct-mounting hardware without handy box
Conduit Adaptor
ADP11A-600R
1/2 in. snap-fit EMT conduit adaptor (box of 10)
Immersion Well
WEL11A-601R
For liquid sensing applications
Sun Shield
SHL10A-603R
For use with outside sensors in sunny locations
DIN Rail Sections
BKT287-1R
BKT287-2R
12 in. (0.3 m) long
39-1/3 in. (1.0 m) long
DIN Rail End Clamp
PLT344-1R
Consists of two end clamps
Cables for Remote Mounting of
D350 Display Module
WHA29A-600R*
WHA29A-603R
WHA29A-604R
3 ft (0.9 m)
25 ft (7.6 m)
50 ft (15.2 m)
*WHA29A-600R may be used to daisy chain S350 modules together.
System 350 A350P Electronic Proportional Plus Integral Temperature Control Product/Technical Bulletin 11
Specifications
Product
Supply Voltage
Power Consumption
A350P Proportional Plus Time Integral Temperature Control
Y350R Power Module:
Input:
120/240 VAC 50/60 Hz
Output: 24 VDC, unfiltered, 10 VA
External Source:
24 VAC, 50/60 Hz, Class 2 (20-30 VAC)
Note: Only one supply voltage source may be used.
3.2 VA maximum
Ambient Temperature
Operating:
Shipping:
Humidity (all modules)
0 to 95% RH non-condensing; maximum dew point 85°F (29°C)
Setpoint Adjustment Range
Throttling Adjustment
Range
Analog Outputs
A350PS-1C:
A350PS-2C:
A350PT-1C:
-30 to 150°F (-34 to 66°C)
-40 to 185°F (-40 to 85°C)
-30 to 130°F (-35 to 55°C)
90 to 250°F (30 to 120°C)
-30 to 130°F (-35 to 55°C)
2 to 30F° (1 to 17C°)
0 to 10 VDC (550 ohm load minimum) and 0 to 20 mA (600 ohm load maximum)
Minimum Output
Adjustable from 0 to 60% of the output
Output Indication
A ten segment LED bar graph indicates percentage of output.
Control Action
Integration Constant
Sensor
Material
Agency Listing
Direct or reverse action is jumper selectable.
Four selectable rates: fast, medium, slow, and off
Replaceable positive temperature coefficient sensor
Reference resistance 1035 ohms at 77°F (25°C)
Case and cover:
NEMA 1 high-impact thermoplastic
UL Listed, CCN XAPX, File E27734
UL Listed for Canada, CCN XAPX7, File E27734
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications,
consult Johnson Controls Application Engineering at (414) 274-5535. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication
or misuse of its products.
Controls Group
507 E. Michigan Street
P.O. Box 423
Milwaukee, WI 53201
Printed in U.S.A.
www.johnsoncontrols.com
12 System 350 A350P Electronic Proportional Plus Integral Temperature Control Product/Technical Bulletin
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