Condensing Unit

Æ
Condensing Unit
Installation and
Operation Manual
PN 0708232_D
MANUAL 1/O H-SERIES CONDENSING UNIT
October 2016
2
TABLE OF CONTENTS
MODEL NUMBERING SYSTEM................................................................................................... 4
INSTALLATION INSTRUCTIONS................................................................................................. 5
SHIPPING DAMAGE................................................................................................................. 5
Apparent Loss or Damage...................................................................................................... 5
Concealed Loss or Damage..................................................................................................... 5
RIGGING AND LIFTING.......................................................................................................... 5
MACHINE ROOM REQUIREMENTS..................................................................................... 6
UNIT PLACEMENT................................................................................................................... 7
Minimum Allowable Clearances.............................................................................................. 7
Maximum Allowable Clearances............................................................................................. 7
SHIPPING BLOCK REMOVAL................................................................................................ 7
TWO-TIER APPLICATION....................................................................................................... 8
RECEIVER CAPACITY.............................................................................................................. 8
PRESSURE RELIEF.................................................................................................................. 8
WATER COOLED CONDENSER............................................................................................. 8
REFRIGERATION PROCESS......................................................................................................... 9
OVERVIEW................................................................................................................................. 9
REFRIGERATION CYCLE.......................................................................................................10
HEAT RECLAIM VALVE..........................................................................................................11
DEMAND COOLING................................................................................................................12
The System Parts..................................................................................................................12
Component Testing................................................................................................................13
Alarm Circuit........................................................................................................................13
Alarm Relay..........................................................................................................................13
Operational Notes.................................................................................................................14
COMPONENT PIPING...................................................................................................................15
OVERVIEW................................................................................................................................15
REFRIGERATION LINE RUNS...............................................................................................15
Through Walls or Floors........................................................................................................15
From Machine to Solid Object...............................................................................................16
P-Trap Construction..............................................................................................................16
Reduced Riser........................................................................................................................16
Factory Supplied Stubs..........................................................................................................16
Protecting Valves and Clamps................................................................................................16
Connecting Remote Condenser...............................................................................................16
Purge Valve Location.............................................................................................................16
MERCHANDISER PIPING......................................................................................................18
Suction Line..........................................................................................................................18
Liquid Line – Off Time and Electric Defrost..........................................................................18
Field Connections of Heat Reclaim........................................................................................18
SPECIAL PIPING FOR OPEN ROOMS.................................................................................18
RUN LENGTHS AND EQUIVALENT FEET...........................................................................18
INSULATION............................................................................................................................18
REFRIGERANT LINE SIZING................................................................................................19
General Information..............................................................................................................19
Refrigeration Line Stubs Out.................................................................................................19
Condenser Line Sizing...........................................................................................................19
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Condensing Unit Installation and Operation Manual
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PN 0708232_D3
ELECTRICAL................................................................................................................................. 20
OVERVIEW............................................................................................................................... 20
GUIDELINES FOR FIELD WIRING...................................................................................... 20
Unit Cooler Fan Wiring........................................................................................................ 20
Evaporator Mounted Liquid Line Solenoid............................................................................ 20
Cooler Door Switch Wiring.................................................................................................. 20
Sizing Wire and Overcurrent Protectors................................................................................ 20
Defrost Controls................................................................................................................... 20
Other Controls..................................................................................................................... 20
ABOUT THESE ELECTRICAL DIAGRAMS......................................................................... 21
Electrical Diagrams.............................................................................................................. 22
START-UP ..................................................................................................................................... 30
Leak Testing ....................................................................................................................... 30
Test Charge.......................................................................................................................... 30
Oil Levels................................................................................................................................... 30
Evacuation........................................................................................................................................ 31
Setup.................................................................................................................................... 31
Procedure.................................................................................................................................... 31
Pre-Charge Check List......................................................................................................... 31
Charging.............................................................................................................................. 31
Winter Charge............................................................................................................................ 31
Compressor Motor Rotation (Scroll)........................................................................................... 31
Final Checks......................................................................................................................... 31
MAINTENANCE............................................................................................................................. 34
COMPRESSOR REPLACEMENT.......................................................................................... 34
REPLACING DRIER AND FILTER CORES.......................................................................... 34
APPENDIX A – DIMENSION DRAWINGS.................................................................................. 35
AIR COOLED / WATER COOLED CONDENSING UNITS.................................................. 36
TROUBLESHOOTING INFORMATION..................................................................................... 52
TROUBLESHOOTING GUIDE..................................................................................................... 53
Condensing Unit Installation and Operation Manual
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PN 0708232_D
Condensing Unit Installation and Operation Manual
Refrigerant:
P - R507
S - R404a
V - R22
F - R407F
T - R448a
R - 449a
Q - R407a
Alternative:
0 - Basic
1 - First Alternative
2 - Second Alternative
3 - Third Alternative
Application (Temp Range):
H - High
M - Medium
L - Low
Compressor Vendor:
B - Bitzer
D - Copeland Discus
S - Copeland Semi-Hermetic
Z - Copeland Scroll
Compressor Horsepower:
005 - 1/2 HP
030 - 3 HP
100 - 10 HP
Base:
S - Standard
H - Heavy Duty
Unit Type:
N - Indoor
T - Outdoor
R - Remote
S - Satellite
W - Water Cooled
Name:
Voltage Designation
D - 208V / 1PH / 60 Hz
K - 208V / 3PH / 60 Hz
M - 460V / 3PH / 60 Hz
P - 575V / 3PH / 60 Hz
U - 380V / 3PH / 50 Hz
Air Condenser:
A - 20 X 32 3R 1F
B - 37.5 X 36 3R 1F
C - 37.5 X 36 3R 2F
D - 37.5 X 36 4R 2F
E - 37.5 X 72 3R 4F
F - 37.5 X 72 4R 4F
G - (2X) (C)
H - (2X) (D)
J - 50 X 87 4R 6F
K - 37.5 x 42.5 6R 4F
Receiver Size:
A - 6” x 12”
B - 6” x 18”
C - 6” x 23”
D - 6” x 30”
E - 8-5/8” x 30”
F - 10-3/4” x 30”
G - 10-3/4” x 38”
H - 12-3/4” x 30”
M - 5” x 12”
N - 6” x 15”
O - 6” x 12”
P - 6” x 36”
X - No Receiver
”A” for new KRACK Unit:
H# #R -030 0L SK - CD - A
Water Condenser:
A - WC1X06
B - WC1X09
C - WC1X12
D - WC1X18
E - WC1X24
F - WC1X30
G - WC1X36
H - WC1X42
I - WC1X48
J - WC1X60
K - WC1X72
L - WC1X84
M - WC2X48
N - WC2X60
O - WC2X72
P - WC3X48
Q - WC3X60
R - WC3X72
X - None
MODEL NUMBERING SYSTEM
4
4
PN 0708232_D5
INSTALLATION INSTRUCTIONS
SHIPPING DAMAGE
All equipment should be thoroughly examined
for shipping damage before and while unloading.
This equipment has been carefully inspected at our
factory and the carrier has assumed responsibility for
safe arrival. If damaged, either apparent or concealed,
claim must be made to the carrier.
Apparent Loss or Damage
If there is an obvious loss or damage, it must be noted
on the freight bill or express receipt and signed by the
carrier’s agent, otherwise, carrier may refuse claim. The
carrier will supply the necessary claim forms.
Concealed Loss or Damage
When loss or damage is not apparent until after equipment
is uncrated, a claim for concealed damage is made. Upon
discovering damage, make request in writing to carrier
for inspection within 15 days and retain all packing. The
carrier will supply inspection report and required claim
forms.
RIGGING AND LIFTING
Under no circumstances should the manifolds, piping
return blends or control panel be used for lifting or
moving the unit. Use lifting eyes provided on two tier
units. On singles tier units, secure lifting hooks to the
under side of the base, or use the holes provided in the
base. The installer is responsible to see that equipment
used to move the unit is operated within its limits.
1 ½ times overall
unit height
minimum
Spreader bar =
unit width + 1 in.
Secure lifting hooks on
underside of base where
sheet metal ends.
Figure 1-1 Rigging and Lifting
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MACHINE ROOM REQUIREMENTS
The equipment room floor must solidly support
the compressor unit as a live load. Ground level
installation seldom presents problems, but a
mezzanine installation must be carefully engineered.
Exhaust Fan
Baffle
9 ft
min
When a Remote Condenser Unit, Satellite Unit or
a Water Cooled Condensing Unit is installed, the
ventilation should be 100 cfm per compressor unit
horsepower. The air inlet should be sized for a
maximum of 600 fpm velocity (0.5 ft² of air intake
per compressor unit horsepower).
4 ft
min
2 ft
min
The Indoor Condensing Unit ventilation should be
750 to 1,000 cfm with 2 to 2.5 ft² of air intake per
compressor unit horsepower.
The ventilation fans should cycle by thermostatic
control.
L
o
u
v
e
r
s
Exhaust Fan
11 ft
min
All machine room ventilation equipment must be
field supplied. Check local codes for variances.
Proper ventilation provides airflow across the
compressors. Duct work may be necessary.
4 ft
min
L
o
u
v
e
r
s
Provide a floor drain for disposal of condensate that
may form on the compressor unit or header defrost
assembly.
Equipment must be located in the machine room to
provide enough working space for service personnel,
and to meet electrical codes.
Consult NEC National Fire Handbook, particularly
“Installation of Switch Boards” and “Working Space
Requirements.” Figures 1-2 and 1-3 illustrate some
suggested distances. Refer to local codes for each
installation.
PN 0708232_D
2 ft
min
Figure 1-2 Machine Room Requirements
(Side View)
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6
PN 0708232_D7
2 ft min
3 ft
min
4 ft
min
Baffle
3 ft max
2 ft min
Figure 1-3 Machine Room Requirements (Top View)
UNIT PLACEMENT
Maximum Allowable Clearances
When piping a suction riser the maximum vertical
When setting the units, plan in relation to the distance between P-traps is 20 feet.
rest of the equipment to be installed and existing
structures. Some minimum and maximum When piping from Remote Condenser Unit to
distances are listed. Note: Piping equivalent is not a Condenser, the maximum allowable piping
the same as linear distance.
equivalent is 100 feet.
Minimum Allowable Clearances
SHIPPING BLOCK REMOVAL
Between an Outdoor Condensing Unit and any
vertical structure (except open chain link fence) Hard mounting is standard on all units. All piping
was carefully design to absorb the vibration that is
the minimum allowable distance is 4 feet.
generated by the compressor and fan motors.
Between one Outdoor Condensing Unit exhaust
and another Outdoor Condensing Unit intake the When the spring mounting kit (optional) is
installed, the unit is shipped with blocks under
minimum allowable distance is 15 feet.
each compressor foot to prevent transit damage.
Between the sides of two Outdoor Condensing Loosen the mounting spring nuts at least one full
Units the minimum allowable distance is 5 feet.
turn and remove the blocks.
On Indoor Condensing Unit, Satellite Unit, Adjust the torque on the mounting spring nuts
Remote Condenser Unit and Water Cooled so that the compressor feet are 1 inch above the
Condensing Unit, the minimum distance between unit’s base.
the Control Panel and the wall is 3 feet.
On Indoor Condensing Unit, Satellite Unit,
Remote Condenser Unit and Water Cooled
Condensing Unit, the minimum distance between
the Control Panel and another live panel is 4 feet.
On Indoor Condensing Units the minimum
distance between the Condenser Air Intake and a
louvered wall is 2 feet.
Shipping
Block
Figure 1-4 Shipping Block Removal
Condensing Unit Installation and Operation Manual
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8
TWO-TIER APPLICATION
The two-tier unit is only an option when it is
installed on the heavy duty base (option) and
it is designed for indoor, water-cooled, remote
condenser or satellite application.
PRESSURE RELIEF
It is standard that a fusible plug is installed on all
the receivers. The connection size for piping from
the fusible plug to outside is 3/8” NPT.
It is also available as an option a relief valve,
which replaces the fusible plug, and has the same
connection size for piping (3/8” NPT).
WARNING:
Two Tier Remote Condenser Units
Are Front Heavy.
WATER COOLED CONDENSER
Flush the water lines before connecting them to
the water-cooled condenser.
Consult Water Cooled Condensing Unit Catalog
for pressure drop, recommended inlet water
temperature and water flow through the condenser.
Take appropriate precautions during shipment and
moving of unit. Fasten to floor upon final placement.
Figure 1-5 Two Tier Remote Condenser Units
RECEIVER CAPACITY
The receiver capacity is listed on the table below.
Capacity - 90%
H-series
Receivers
6x12
6x18
6x23
6x30
8-5/8x30
10-3/4x30
10-3/4x38
12-3/4x30
5x12
6x15
6x12
6x36
PN 0708232_D
R22
R404a/R507
R448a/449a
R407a
R407F
12.8
19.2
24.6
32
62
94.6
122
115
9.1
16.8
13.1
41.6
11.1
16.7
21.4
27.9
53.9
82.3
106.2
100.1
7.9
14.6
11.4
36.1
11.7
17.6
22.5
29.3
56.6
86.5
111.6
105.2
8.3
15.3
12.0
37.9
12.2
18.4
23.6
30.7
59.4
90.7
117.0
110.3
8.7
16.1
12.6
39.8
11.9
18.0
23.0
30.0
57.9
88.5
114.2
107.6
8.5
15.7
12.3
38.8
Condensing Unit Installation and Operation Manual
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PN 0708232_D9
REFRIGERATION PROCESS
OVERVIEW
This section details the refrigeration process by
tracking the refrigerant flow through the system
components. Heat Reclaim, Demand Cooling, Oil
separation and return is explained. See Piping for
piping guidelines.
Typically, refrigeration falls into low or medium
temperature ranges. An average low temperature
condensing unit maintains a suction temperature
of -20F with a low-temp Satellite operating at
-33F. A common medium temperature condensing
unit operates at +25F with a low-temp Satellite
operating at +7.
In these instructions the following constants are
maintained to assist the reader.
In the diagrams refrigerant flow direction is
generally clockwise and indicated by directional
arrows.
Electric solenoid valves carry the same initial
abbreviations as in the electric schematics.
Refrigeration lines not actually in the cycle being
discussed are shown closed or removed. Pressure
in oil lines will also retain a fixed pattern.
Heat Reclaim Coil
Heat Reclaim Valve
Evaporator
Check Valve
Oil Return
Line
Check Valve
Oil Separator
Sensor
Demand Cooling
Module
Accumulator
Suction Filter
Sight Glass
Differential
Check Valve
Injection
Valve
Oil Line
Solenoid
Compressor
Liquid
Line
Solenoid
Condenser
Receiver
Liquid Dryer
High Pressure Hot Vapor
High Pressure Warm Liquid
High Pressure Warm Vapor
Low Pressure Cool Vapor
Condenser
Adjustable
Flooding
Valve
Fixed Flooding Valve
Receiver
Figure 2-1 Refrigeration Cycle
Condensing Unit Installation and Operation Manual
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10
REFRIGERATION CYCLE
Beginning with the Compressor, refrigerant vapor
is compressed and flows to the Oil Separator,
which separates the oil from the discharge gas
by centrifugal force and screen baffles. The oil
is stored in the bottom of the Oil Separator and
returned to the compressors through the oil return
line.
Figure 2-3 Heat Reclaim Valve
The Condenser rejects the heat that must be
removed from refrigerant to cause it to condense.
For Low Ambient Conditions, Fan Cycling or
Flooding Valves are required. These valves may
be fixed or adjustable. The adjustable flooding
valve works in parallel with a 20 pound differential
check valve.
Figure 2-2 Oil Separator
The Flooding Valve maintains head pressure
When an Oil Separator is installed the following in low ambient conditions by restricting liquid
refrigerant flow from the Condenser. This causes
components are required:
• Check Valve on the discharge line after the liquid refrigerant to be backed up in the condenser
Oil Separator, to prevent refrigerant migration thus reducing available heat transfer surface and
during low ambient temperatures from the causing the discharge pressure to rise.
condenser to the Oil Separator, and from that
to the Compressor.
• Oil Line Solenoid on the oil return line, to
prevent the oil to return from the compressor
when the compressor is not running. The
excessive oil in the carter when the compressor
starts, could cause damage to the compressor
such as broken valve plate or piston, etc.
A 3-Way Heat Reclaim Valve directs the
superheated discharge gas to either the condenser
or a Heat Reclaim device when energized. When
the reclaim solenoid is de- energized the valve
directs the refrigerant to the condenser.
Fixed Flooding
Adjustable
Flooding Valve
Valve
and Differential
Check Valve
Figure 2-4 Flooding Valves
The Receiver is a holding vessel for liquid
refrigerant that compensates for fluctuations in
PN 0708232_D
Condensing Unit Installation and Operation Manual
10
PN 0708232_D11
liquid requirements due to changing load, defrost, At critical locations along the refrigerant path,
and weather.
service valves or ball valves allow isolation of
components.
A Liquid Line Drier removes moisture and
contaminants from the refrigerant.
HEAT RECLAIM VALVE
The Sight Glass allows service personnel to view
refrigerant flow inside the liquid line.
The Liquid Line Solenoid Valve closes off
refrigerant supply to the evaporator.
A 3-Way Heat Reclaim Valve directs the refrigerant
to either the Condenser or a Heat Reclaim Coil.
When the solenoid is de- energized the valve
directs the refrigerant to the condenser.
When the solenoid is de-energized the highpressure inlet is stopped and the passage between
suction and valve chamber is open. When the
solenoid is energized the suction outlet is stopped
and the passage between high pressure and the
valve chamber is open.
“B” version of the valve has a bleed port through
the drive piston to the suction manifold. The bleed
Figure 2-5 Liquid Line Solenoid Valve
port provides a vent for fluids trapped in the Heat
The Thermostatic Expansion Valve (TEV), located Reclaim circuits during normal operation.
in the merchandiser, meters liquid refrigerant
through its orifice to the low pressure side of the
De-energized
system where it absorbs heat from the coil causing
the liquid to evaporate.
To Suction
Manifold
Bleed Port
To Heat
Reclaim
Figure 2-6 Thermostatic Expansion Valve
The Accumulator catches liquid refrigerant in the
suction line and provides a means for it to boil off
before it reaches the compressor.
A Suction Filter is placed upstream of the
compressor to remove system contaminants from
the refrigerant vapor.
Condensing Unit Installation and Operation Manual
From
Discharge
Manifold
To Condenser Valve in
Normal Operation
Figure 2-7 Heat Reclaim Valve
Normal Operation
11
12
Energized
To Suction
Manifold
To Heat
Reclaim
From
Discharge
Manifold
To Condenser Valve in
Heat Reclaim Mode
Figure 2-8 Heat Reclaim Valve
Heat Reclaim Mode
DEMAND COOLING
Temperature
°F
77
282
292
310
Approximate Ohm
Reading
90,000
2,400
2,100
1,700
The Control Module responds to the Temperature
Sensor input by energizing the Injection Valve
Solenoid when 292°F is exceeded. Too high or too
low a resistance from the thermistor circuit will
cause the Module to shutdown the compressor
after one minute.
The Injection Valve meters saturated refrigerant
into the suction cavity of the compressor. The valve
orifice is carefully sized to meet the requirements
of a specific compressor. Valve sizes correspond
to the four compressor bodies- 2D, 3D, 4D.
The Demand Cooling System is designed to inject Probe test readings between 100,000 Ohms and
saturated refrigerant into the suction cavity when 1,600 Ohms usually indicate an operating probe.
the compressor internal head temperature exceeds
Temperature
292°F. Injection continues until the temperature
Sensor
Module
is reduced to 282°F. If the temperature remains
Injection
above 310°F for one minute the control shuts
Valve
down the compressor. After correcting the cause
of shutdown, manual reset is required.
The System Parts
Temperature Sensor
Control Module
Injection Valve
The Temperature Sensor uses a Negative
Temperature Coefficient (NTC) Thermistor to
provide signals to the Control Module. The NTC
resistance drops on temperature rise.
Temperature
Sensor
Module
Injection Valve
Solenoid
Figure 2-9 Demand Cooling Components
PN 0708232_D
Condensing Unit Installation and Operation Manual
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PN 0708232_D13
Component Testing
Remove power to the system. Unplug the
Temperature Sensor from the Module. The Sensor
should ohm out between 1,600 Ohms and 100,000
Ohms.
Leave the Sensor unplugged and restart the
system. There should be no voltage between
terminals “S” and “L2” on the Module. The inlet
and outlet sides of the Injection Valve should feel
the same temperature. After one minute the alarm
relay should trip. Remove power to the system.
Press the manual reset on the Module.
Figure 2-10 Demand Cooling
Alarm Connections
Using a small piece of wire, jump the Sensor
circuit at the female plug in the Module. Restart
the system. There should be voltage between
terminals “S” and “L2” on the Module. The outlet
side of the Injection Valve should feel colder than
the inlet side. After one minute the alarm relay
should trip.
Remove power to the system. Press the manual
reset on the Module.
Temperature
Sensor
Remove the jumper wire and plug in the
Temperature Sensor.
Restart the System.
Injection Valve
Alarm Circuit
The Alarm Circuit has three terminals in the
Control Module.
Compressor Terminal Box
Not all wires shown
“L” – Common
“M” – Normally Closed
“A” – Normally Open
To Control Panel
“L” and “M” are wired into the compressor
Figure 2-11 Demand Cooling Wiring
control circuit so an alarm condition removes
the compressor from the line and power to
the Module. A manual reset is required to call Alarm Relay
The Alarm Relay is activated after a one minute
attention the alarm condition.
delay under the following three conditions:
• Compressor discharge temperature exceeds
310°F.
Condensing Unit Installation and Operation Manual
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14
• A shorted circuit or very low Thermistor
Resistance.
• An open circuit or very high Thermistor
Resistance.
Operational Notes
Demand Cooling does NOT replace head cooling
fans, which may be required on low temperature
applications.
On indoor and outdoor condensing units, the
condenser fans replace the head cooling fan.
When fan cycling is applied, at least one condenser
fan MUST always be ON with the compressor, so
head cooling fan will be not necessary.
Temperature Sensor cables must not touch any
hot surfaces or the cable will be damaged.
PN 0708232_D
Condensing Unit Installation and Operation Manual
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PN 0708232_D15
COMPONENT PIPING
OVERVIEW
This section deals with the information necessary
for installing the refrigeration lines for a
condensing unit. The components are piped as
completely as practical at the factory.
Use only clean, dehydrated, sealed refrigeration
grade copper tubing. Use dry nitrogen in the
tubing during brazing to prevent the formation
of copper oxide. All joints should be made with
silver alloy brazing material, and use 45% silver
solder for dissimilar metals.
Floor Run
WARNING
Always use a Pressure Regulator on the
nitrogen tanks.
REFRIGERATION LINE RUNS
Liquid Lines and suction lines must be free to
expand and contract independently of each
other. Do not clamp or solder them together.
Ceiling Run
Run supports must allow tubing to expand and
contract freely. Do not exceed 100 feet without
Figure 3-1 Supporting Refrigeration Lines
a change of direction or/and offset. Plan proper
pitching, expansion allowance, and P-traps at the
base of all suction risers. Use long radius elbows Through Walls or Floors
Refrigeration lines run through walls or floors
to reduce line resistance and breakage.
must be properly insulated. Avoid running lines
Avoid completely the use of 45 degree elbows. through the refrigeration cases. When this is done
Install service valves at several locations for ease the lines must be adequately insulated.
of maintenance and reduction of service costs.
These valves must be UL approved for 410 psig
minimum working pressure.
Riser
Insulation
Insulation 2nd Layer
Support Detail
Condensing Unit Installation and Operation Manual
Figure 3-2 Insulating a Riser
15
16
From Machine to Solid Object
When mounting lines from machinery to a solid
object allow line freedom for vibration to prevent
metal fatigue.
Reduced
Riser
Clamp Here
Factory Clamp
10 X Pipe
Diameter
Figure 3-3 Vibration Allowance
P-Trap Construction
A P-Trap must be installed at the bottom of all
suction risers to return oil to the compressors.
Using Elbows
Riser
Keep this distance as short as possible
Using P-Trap
Riser
Figure 3-5 Reduced Riser
Factory Supplied Stubs
Stub sizes provided do not automatically
correspond to the line sizes necessary. It is the
installer’s responsibility to supply reduction
couplings.
Protecting Valves and Clamps
When brazing near factory installed clamps or
valves be sure to protect them with a wet rag to
avoid overheating.
Connecting Remote Condenser
• Discharge Line will be routed directly to the
condenser inlet stub with a purge valve at the
highest point.
• Liquid Return line will be pitched downstream
and provide trap less drainage to the Receiver.
Purge Valve Location
The purge valve will be installed at the highest
point of an inverted P-Trap, with at least a 6”
rise. (Use with approved recovery vessel.)
WARNING
Vent the Receiver Safety Relief Device
properly.
Figure 3-4 P-Trap Construction
Reduced Riser
When a reduced riser is necessary, place the
reduction coupling downstream of the P-Trap.
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Condensing Unit Installation and Operation Manual
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PN 0708232_D17
Fixed Flooding Valve Piping
Heat Reclaim Valve
Header End of
Condenser
3” Min
Rise
All Piping and
Valves in this
box are field
supplied and
Installed.
Bleed Line
to Suction
Fixed Flooding Valve
Liquid Return Line
Receiver
Heating Coil
From
Heat
Reclaim
To Heat
Reclaim
Bleed Line
to Suction
12” Min
Heat Reclaim Valve
Pitch ¼” per Foot
Adjustable
Flooding
Valve
Liquid Return
Line
Differential
Check
Valve
Receiver
Discharge Lines
Ball Valve
Liquid Return Lines
Check Valve
Purge Valve
Service Valve
Figure 3-6 Remote Condensing Unit Piping
Note: The Heat Reclaim Valve could be factory or field installed and depends on the customer
request.
Condensing Unit Installation and Operation Manual
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18
MERCHANDISER PIPING
SPECIAL PIPING FOR OPEN ROOMS
Suction Line
• Pitch in direction of flow.
• May be reduced by one size at one third of run
load and again after the second third. Do not
reduce below evaporator connection size.
• Suction returns from evaporators enter at the
top of the branch line.
An open preparation room allows heat infiltration
from the rest of the store at a rate which may
jeopardize total refrigeration performance. To
protect the rest of the refrigeration system, open
preparation evaporators must be piped with a
Crankcase Pressure Regulating Valve (CPR).
The CPR is field installed in the suction line(s) from
the evaporator(s). And the installer is responsible
for proper adjustment of the Valve. (See: Control
Valve Section for adjustment procedures.)
Suction Line Return
3” Loop
Liquid Line Take Off
RUN LENGTHS AND EQUIVALENT FEET
When figuring run lengths, angle valves and 90
degrees elbows are figured as additional straight
pipe. The chart below gives equivalent lengths for
these components.
Figure 3-7 Line Piping Inside Merchandisers
Tubing Size
Angle Valve
Liquid Line – Off Time and Electric Defrost
• May be reduced by one size after one half of the
case load run. Do not reduce below evaporator
connection size.
• Take-offs to evaporators exit the bottom of
the liquid line. Provide an expansion loop for
each evaporator take-off (Minimum 3 inch
diameter).
/2
/8
7
/8
1 1/8
1 3/8
1 5/8
2 1/8
2 5/8
3 1/8
3 5/8
4 1/8
6
7
9
12
15
18
24
29
35
41
47
Field Connections of Heat Reclaim
Each circuit of the heat reclaim coil is tagged to
correspond with a specific condensing unit and
must be connected only to that unit.
The supply and return lines are to be installed as
shown in Figure 3-6.
Notice that heat reclaim could be factory or field
installed, and depends on customer order.
PN 0708232_D
1
5
Long Radius
Elbow 90°
0.9
1.0
1.4
1.7
2.3
2.6
3.3
4.1
5.0
5.9
6.7
Table 3-1 Equivalent Feet for Angle Valve and
Elbow 90º
(ASHARE 1994 Refrigeration Handbook)
INSULATION
Additional insulation for the balance of the
liquid and suction lines is recommended wherever
condensation drippage is objectionable or the
lines are exposed to ambient conditions.
Condensing Unit Installation and Operation Manual
18
PN 0708232_D19
REFRIGERANT LINE SIZING
General Information
This document supersedes all previously
published line sizing data – including planning
data, installation instructions, or other standalone documents.
Refer to ASHARE standards for line sizing. The
installer is responsible for sizing the piping for
each application.
Refrigeration Line Stubs Out
Stub sizes do not match line sizes. Reduction
fittings are field supplied and installed. These are
general guidelines. The installer is responsible
to account for any factors which may affect the
system.
Condenser Line Sizing
A Condenser Line Sizing chart is established for
an equivalent pipe run of 100 feet. For longer
runs use the following formula:
Table Capacity * √100/Longer Length = Longer
Line
Capacity
Note: This formula applies only to remote
condenser lines, and only to longer runs of these
lines. A 25 ft run does not necessarily have double
the capacity of a 100 ft. run.
Condensing Unit Installation and Operation Manual
19
20
ELECTRICAL
OVERVIEW
To each condensing unit provide;
one 460/3/60 branch circuit,
The scope of this section is limited to main field one 208/3/60 circuit – see Note 1
wiring connections, and to the control panel.
• For 575/3/60 Condensing Units:
The standard Condensing Unit is available To each condensing unit provide;
wired for 208-230/1/60, 208-230/3/60, 460/3/60, one 575/3/60 branch circuit,
575/3/60 or 380/3/50 compressors (note that some one 208/3/60 circuit – see Note 1
compressors may be available in all voltages). In • For 380/3/50 Condensing Units:
either case, the control circuit is 208-230V.
To each condensing unit provide;
one 380/3/50 branch circuit, one Neutral
The standard 460V and 575V Condensing Unit
require two single point connections, one for Note 1 – Omit when single point connection kit is
the compressor (460V or 575V) and one for the used.
control and defrost circuits (208-230V). When a
single point connection is specified for 460V and Unit Cooler Fan Wiring
575V condensing units, the factory will install Off Time Defrost: the unit cooler fan should
a transformer to supply 208-230V for just the be wired from the condensing unit panel or an
control circuit.
outside panel.
Refer to the serial plate located on the control Electric Defrost: the unit cooler fan should be
panel to determine wire size (MCA) and over- wired from the condensing unit panel.
current protection (MOPD).
Evaporator Mounted Liquid Line Solenoid
GUIDELINES FOR FIELD WIRING
Power for a liquid line solenoid can be picked up
from the fan circuit.
Condensing Unit components are wired as
completely as possible at the factory with all Cooler Door Switch Wiring
work completed in accordance with UL file. All The switch must be mounted to the cooler door
deviations required by governing electrical codes frame, and must be wired to control the field
installed liquid line solenoid and evaporator fans.
will be the responsibility of the installer.
Door switches are wired in series.
The main lugs in the compressor control panel are
sized for copper wire only, with 75° C insulation. Sizing Wire and Overcurrent Protectors
All wiring must be in compliance with governing Check the serial plate for Minimum Circuit
Ampacity (MCA) and Maximum Overcurrent
electrical codes.
Protective Devices (MOPD), follow NEC
• For 208-230/1/60 Condensing Units:
guidelines.
To each condensing unit provide; one
208-230/1/60 branch circuit,
Defrost Controls
The basic defrost circuits are shown on the wiring
• For 208-230/3/60 Condensing Units:
diagrams in this section.
To each condensing unit provide; one
208-230/3/60 branch circuit,
• For 460/3/60 Condensing Units:
PN 0708232_D
Condensing Unit Installation and Operation Manual
20
PN 0708232_D21
Other Controls
When other controls are used, refer to the
manual included with that control.
ABOUT THESE ELECTRICAL
DIAGRAMS
All diagrams show the electrical system DEenergized and in refrigeration mode. Diagrams
emphasize individual circuit continuity and
logic. They aid troubleshooting and testing by
identifying point-to-point connections. Color
coding wires allows easy transfer to the control
panel. The diagrams normally move from
left to right so the user can read the series of
components and their terminals which make up
a circuit.
Generally, in a control circuit the loads are
limited to coils, lights, and bells. By identifying
one control circuit load and “reading” the
schematic to the load, the sequence of operation
becomes obvious. Troubleshooting that circuit
then breaks into test point terminals. Take only
one circuit at the time.
Important Note:
The electrical diagrams in this section show
circuit logic. They are not intended for
troubleshooting or design work. For unit cooler
fan power, electric defrost sub circuit balance,
and other location specific circuits refer to the
schematics on control panel.
Condensing Unit Installation and Operation Manual
21
22
14AWG
L1
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AND PHASE BALANCE.
PROTECTORS MAY BE EITHER CIRCUIT BREAKER OR FUSES.
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22
Condensing Unit Installation and Operation Manual
PN 0708232_D
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DATE
11MAY16
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1 � 1
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23
Condensing Unit Installation and Operation Manual
I
24
PHASE
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TIMER
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UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES.
TOLERANCES ARE
THIRD
DECIMALS .XX ±.03,
±.010
ANGLE
°
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PROJECTION
24
Condensing Unit Installation and Operation Manual
�
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PN 0708232_D
PN 0708232_D25
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THIRD
±.03,
±.010 \ �� / l__ I
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'--L/ � PROJECTION
25
Condensing Unit Installation and Operation Manual
L1
L1
L1
I
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B
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J=:
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IMER
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NOT ALL COMPONENTS ARE USED ON A SPECIFIC
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COMPONENTS MUST MAINTAIN CIRCUIT INTEGRITY
AND PHASE BALANCE.
PROTECTORS MAY BE EITHER CIRCUIT BREAKER OR FUSES.
B_
Y� BL --e-f-s
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PRESSURE CONTROL
OR-----t---B---­
HEAD COOLING FAN
OR�B--�
�
P
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BL� B _______J
R � BL
6
2
CH
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CH
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PRESSURE
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RAM
REV BY
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B
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IS
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SPLICE BLUE TO ORANGE
INJECTION
SOLENOID
DEMAND
COOLING
MODULE
REVISION DESCRIPTION
H-DIAGRAM MAJOR RE-DESIGN. ADDED SHEET DWG #3010445 FOR DETAIL BLOCKS.
REVISION HISTORY
y--e---Y
BL:
R
� fil
----BL�
y
DATE
B
,------------------oR� B --------->-----'
LIQUID LINE
SOLENOID VALVE
ECN
ECN-CAP--000
2691--A
30SEP16
R-§-R_:_J
PUMPDOWN
SWITCH
i;
LLS
B
r-----------------8--------------_J
R� �B
B
OL
AUX
�
os
CONTACTOR
SOLENOID
�--------------------------------------8-------------------------------------�
SECONDARY
208-230V
TRANSFORMER
PRIMARY
575V/460V/
380V
FUSES
60 HERTZ
R
le
I'°
R
o-----'
r I
I UNIT COOLERS
I TERM BLOCKS
-,
LFT
X!
L _J� L _J
DEFR
TERMINATION
T'STAT
H
REV
�p /
1 MATERIAL- ---I MODEL BY / DWG BY- RAM
CHECKED BYWAYNE
REF- SUPERSEDES
APPROVED BYCRAIG
DATE DRAWN -30SEPl6
SHEET I OF 1
UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES.
TOLERANCES ARE
THIRD
r,{\
� I
ANGLE
DECIMALS .xx ±.03, .xxx ±.0 IO \
°
ANGLES ± 2
'-V � PROJECTION
26
Condensing Unit Installation and Operation Manual
PN 0708232_D
POWER SUPPLY
VOLT
575 '
� !:�
PHASE
MONITOR
CONT.
26
PN 0708232_D27
1
1N-2Y
SMALL MEDIUM
LARGE UNITS
B
0-l �
FAN
CONTACTOR
FANS
0-l �
B
FAN
CONTACTOR
FANS
0-l �
B
1N-2Y-3N-4N
0-l �
B
FAN
CONTACTOR
FANS
0-l �
B
FANS
0-l �
B
FAN
CONTACTOR
0-l �
B
FANS
FAN
CONTACTOR
FANS
0-l �
B
FAN
CONTACTOR
FANS
0-l �
B
FANS
0-l �
B
FANS
FAN
CONTACTOR
H3
H4
H5
#6
HB
HB
FANS
0-l �
B
FANS
FAN
CONTACTOR
0-l �
B
FAN
CONTACTOR
0-l �
B
FANS
FAN
CONTACTOR
0-l �
B
FANS
FAN
CONTACTOR
0-l �
B
X-LARGE UNITS
1N-2Y-3Y-4Y-5Y-6N
1N-2Y-3Y-4N-5N-6N
H2
1N-2Y-3Y-4Y-5N-6N
1N-2N-3N-4Y-5N-6N
H1
1N-2Y-3Y-4Y-5Y-6Y
FAN
CONTACTOR
H1
H3
H4
1N-23Y-45Y-6Y
H2
H2
H3
H4
1N-234Y-5N-6N
H1
H2
H3
H3
H4
H5
H5
H5
H5
#4
H5
1N-23Y-45Y-6N
12
1N-23Y-4N-5N-6N
H1
H1
1N-23Y-456Y
H4
CRAIG
APPR BY
H3
H3
WAYNE
CHKD BY
H2
H2
RAM
REV BY
H1
H1
REVISION DESCRIPTION
HB
HB
HB
HB
HB
I
H
POWER SUPPLY:
208V/1PH
G)
MEDIUM
SMALL
CONDENSER FAN ARRANGEMENTS
Ww
LARGE
X-LARGE
DIAGRAM -FAN CYWNG 208V/1 PH SUPPLY
Hussmnnn®
1 FAN
OR 2 FANS
4 FANS
= 6 FANS
IWwlQ)w
r"i
SMALL UNITS =
MED UNITS = 1
LARGE UNITS =
X-LARGE UNITS
�p /
MATERIAL- ---I MODEL BY / DWG BY- RAM
CHECKED BYWAYNE
REF- SUPERSEDES
APPROVED BYCRAIG
DATE DRAWN - I I MAYl6
SHEET I OF 1
UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES.
TOLERANCES ARE
f;f::\
THIRD
i.__
ANGLE
DECIMALS .xx ±.03, .xxx ±.010 \
I
--..i PROJECTION
'-V
ANGLES ± 2·
1 1
1H81161001
DATE
FANS
FANS
NOTE:
NOT ALL COMPONENTS ARE USED ON A SPECIFIC
APPLICATION. DELETION OR ADDITION OF
COMPONENTS MUST MAINTAIN CIRCUIT INTEGRITY
AND PHASE BALANCE.
PROTECTORS MAY BE EITHER CIRCUIT BREAKER OR FUSES.
ECN
REVISION HISTORY
REV
1
H-DIAGRAM MAJOR RE-DESIGN. ADDED SHEET DWG H3010445 FOR DETAIL BLOCKS.
1
11MAY16
1
ECN-CAP-0002691-A
1
FAN
CONTACTOR
1N-2Y-34Y
1N-2Y-3Y-4Y
FA N
CONTACTOR
1N-2Y-3Y-4N
FAN
CONTACTOR
H4
1
H
1
27
Condensing Unit Installation and Operation Manual
28
FANS
FANS
FANS
FANS
1N-2Y
#1
#1
FAN
CONTACTOR
FANS
FAN
CONTACTOR
FANS
FANS
FAN
CONTACTOR
FAN
CONTACTOR
FANS
1N-2Y-3Y-4Y-5Y-6N
#2
#3
#4
#5
1N-2Y-3Y-4N-5N-6N
Jf
#2
#3
#4
#5
1N-2N-3N-4Y-5N-6N
#1
1N-2Y-3Y-4Y-5N-6N
1N-2Y-3Y-4Y-5Y-6Y
FANS
FAN
CONTACTOR
FANS
FAN
CONTACTOR
FANS
FAN
CONTACTOR
X-LARGE UNITS
#6
#6
#6
FAN
CONTACTOR
FANS
FAN
CONTACTOR
FANS
NOTE:
NOT ALL COMPONENTS ARE USED ON A SPECIFIC
APPLICATION. DELETION OR ADDITION OF
COMPONENTS MUST MAINTAIN CIRCUIT INTEGRITY
AND PHASE BALANCE.
PROTECTORS MAY BE EITHER CIRCUIT BREAKER OR FUSES.
#1
#1
#1
#3
#4
#4
#4
#4
1N-23Y-45Y-6Y
#2
#3
1N-234Y-5N-6N
#2
#3
1N-23Y-45Y-6N
#2
#3
1N-23Y-456Y
#2
CHKD BY
CRAIG
APPR BY
#1
REV BY
WAYNE
#5
#5
#6
#6
#6
#6
#5
#6
#5
#5
1LJ81162001
IH
// /
REVISION DESCRIPTION
RAM
REVISION HISTORY
H-DIAGRAM MAJOR RE-DESIGN. ADDED SHEET DWG #3010445 FOR DETAIL BLOCKS.
FANS
FAN
CONTACTOR
DATE
#4
ECN
11MAY16
#3
REV
ECN-CAP-0002691-A
#2
1N-2Y-3Y-4Y
1N-2Y-3N-4N
#2
SMALL MEDIUM
LARGE UNITS
FAN
CONTACTOR
FAN
CONTACTOR
FAN
CONTACTOR
FAN
CONTACTOR
FAN
CONTACTOR
FANS
H
.xxx
SMALL
POWER SUPPLY:
208V-575V /3PH
G)
MEDIUM
CONDENSER FAN ARRANGEMENTS
G) w
LARGE
X-LARGE
�
�
i
�
�
�
�
Dj
Hussmnnn® �
DIAGRAM -FAN CYWNu
208!460!575V-3-60 SUPPLY
1 FAN
OR 2 FANS
4 FANS
= 6 FANS
IG) w lQ) w
SMALL UNITS =
MED UNITS = 1
LARGE UNITS =
X-LARGE UNITS
r,:t\ r"I
MATERIAL- ---I MODEL BY / DWG BY- RAM
CHECKED BYWAYNE
APPROVED BYCRAIG
REF- SUPERSEDES
DATE DRAWN - 1 IMAYl6
SHEET I OF 1
UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES.
TOLERANCES ARE
THIRD
DECIMALS .XX ±.03,
±.010 \ �� J l.__ I
ANGLE
°
ANGLES + 2
'--I./ --.i PROJECTION
28
Condensing Unit Installation and Operation Manual
PN 0708232_D
PN 0708232_D29
DIAG
INSERT
COPELAND DISCUS , SEMI HERMITIC (COPELAMETIC), SCROLL
y
FOR
- COPruND
- -RECP, -COMPRESSOR.
-
FOR IIIZER - WITHOllf OI.CK1 MOOUl£:
8-TOL.2
TERM
BLOCK
SCROLL
COMPRESSOR
0MB
(IF USED)
OR
l
y
NO VOLTAGE MUST COME IN CONTACT
WITH TERMINALS 1, 2, 3, 4, 81, 82
�1 -8
BLOCK
208-230/24V
TRANSFORMER
IS
t
8
LIQUID INJECTOR
SOUENOID
BL
y
2 OR MORE CON. FANS
OR
&
p
� �
BITZER ECOLINE COMPRESSOR
FAN/OIL
RELAY 208V
TO "M" ON
OIL FAIUJRE
OR
DC
�
CASES
UNIT COOUER
FAN DELAY
T'STAT
UNIT COOLER
/
t--¢Ej:--ffiI R
HEATER SAFETY
FROM "I!" ON
PHASE MONITOR
TO L1 !ERM. BLOCK
B
NO
TO L2 !ERM. BLOCK ---I 2
TIME DELAY RELAY
AUXILIARY
PROTECTOR
SE-83
OR
BLOCK DESCRIPTION
A-COMPRESSOR TERMINAL WIRING
B-SOLID STATE MODULE WIRING
C-TRAX-OIL WIRING
D-UNIT COOLER FAN CONNECTION
E-SCROLL LIQUID INJECTION
F-HEAT TAPE WIRING
G-LIQUID INJECTION - COPELAND RECIP
H-CONDENSER FAN
I-UNIT COOLER - FAN DELAY T'STAT
J-UNIT COOLER - HEATER SAFETY
K-PHASE MONITOR TIME DELAY RELAY
L-COPELAND SCROLL ZL/ZB**K5E WITH
NEW CORESENSE DIAGNOSTICS
N-CONDENSER FAN WIRING
P-ECM MOTOR WIRING
A2(L2)
18
EATON TIMER
A 1 (L 1)
J..
I
B1
ADJUSTABLE
16 {NC)
TIME DELAY
15
C
B
TO L2 LINE ON
AUXILIARY
PROTECTOR
STANDARD APPLICATION
ORANGE WIRE TO
LM TERMINAL BLOCK
SSPC1, XPRT1 & CPC IPC JR
RED WIRE CONNECT TO
MOTOR CONTACTOR
SCROLL COMPRESSORS
STANDARD TIMER, SPPC1
XPRT1 AND CPC IPC JR
RED WIRE TO DISCHARGE T-STAT
OR IF NO T-STAT RUN RED WIRE
TO CONNECT WITH
BROWN WIRE FROM TRAXOIL
NON SCROLL COMPRESSORS
REFERANCE-EATON ADJUSTABLE TIME DELAY
ORANGE WIRE CONNECT TO BLUE WIRE
FROM HIGH PRESSURE CONTROL
OR IF OIL FAILURE CONTROL IS USED
CUT INTO ORANGE WIRE FROM "M"
CONNECTION.
SSPC1, XPRT1 & CPC IPC JR
RED WIRE CONNECT TO BLUE WIRE
FROM HIGH PRESS. CTL.
(COM)
TO L1<>---
81�
-t@/�
REFERENCE HEAT RECLAIM WIRING
#3
#4
#5
#6
208V
460V
575V
=
=
=
L1
BLACK
BROWN
RED
L2
RED
ORANGE
BLACK
L3
BLUE
YELLOW
BLUE
p
BR
COPELAND SCROLL ZF/ZB**K5E
WITH NEW CORESENSE DIAGNOSTICS
(WHEN USED)
Liquid Injection Shut-Off
�µ��µ�
CONDENSER FAN WIRING
NOTES:
1 . Remove demand signal wire from terminal "D" when
E2 Controller is applied. (Demand Thru RS-485)
17 7 7 7 :;I FROM
CONDENSER
FAN
CONTACTOR
r , , , ,1
#1H81161001, #1H81162001, #1H81163001
LEGEND:
o.
�
WIRING
NORMALl.Y CLOSED
CONTACTS
NORMALLY OPEN
CONTACTS
CONTROL
RELAY COIL
PRESSURE
CONTROL
OPEN ON RISE
o-H-o
--
--
----
0
T
D
FIELD WIRING - - FACTORY WIRING -HOUSE WIRING - HW FIELD OR HOUSE WIRING
POWER DISTRIBUTION
L 1 L2 L3
BLOCK (PDB) �
TERMINAL BLOCK
0
BROKEN LINE INDICATES
FIELD INSTAUATION
O'XrO POWER WIRING
•
�
0
WIRE COLOR CODE
RED
Y = YELLOW
BLUE
W = WHITE
ORANGE BR= BROWN
PURPLE B = BLACK
GR= GRAY
PINK
�
FAN
FAN
FAN
FAN FAN
FAN
* FOR THIS APPLICATION SINGLE CONDENSER FAN
REQUIRES CONTACTOR ALSO.
NOTE: FOR FAN CYCLE CONTROL SEE FAN CYCLING DRAWINGS
R =
BL=
OR=
P =
PK=
RELAY CONTACTS
0-;tfo
NORMAl.l.Y CLOSED
PRESSURE
CONTROL
°);-?
CLOSE ON RISE
COMPRESSOR MOTOR
CONTACTOR COIL
COMPRESSOR COOLING
§
FAN MOTOR
RELAY OR CONTR COIL TERMINAL
BLOCK
COIL IDENTIFICATION
B
MC = COMPRESSOR
FUSE
�SHOWN
::
R�
MC
l
FC = COND FAN
S 24V YELLOW
THERMAL
CH = CRANKCASE HEATER
PUMP
HEAT RECLAIM
R = HEAT RECLAIM LOCKOUTr OVERLOAD
230V RED
SOLENOID
SOLENOID
UCF = UNIT COOLER FANS
SPLICE
DC • DEFROST
DT = DEFROST THERMOSTAT
WIRE CAP
C ONDENSER
VOLTAGE PHASE TAPE OR
R = HEAT RECLAIM LOCKOUT
B REAKER
MINIMUM
CIRCUIT
CONDUCTOR COLOR
'\
WIRE SIZE
BREAKER
FANS
(AWG)
SIZE (A)
15
#2
r
CONTROL
s1�f o;rfi B
BREAKER
CONDENSER FAN
�-------GRAY
HEAD COOLING FAN
"t-1 -1
(WHEN REQ'D)
PDB c, � � PDB or
Terminal Blackl � L!:!J..!!J T....... Blackl
c,. nooded)
c,. nooded)
NOTES:
USE ONLY WHEN USING 4 OR MORE ECM FANS.
ONLY USED ON SINGLE POINT 208V POWER SUPPLY OR 380V WITH 120V CONTROL
- --
� 1�-0-1
SINGLE CON. FAN
�
TO L1 SIDE OF
MOTOR COIITACTOR
R
REFER TO TERMINAL BOX & TERMINAL PLATE FOR MOTOR CONNECTION
BASED ON MOTOR VOLTAGE.
OL
R
��1 �--+-B
BLOCK
��-���
(IF USED)
UNIT COOLER FAN CONNECTION
TO TR
TERMINAL BLOCK
COPELAND SCROLL 3-6 HP LIQUID INJECTION SOLENOID
B
p
p
LIQUID INJECTOR
CURRENT SENSING RELAY
SOLENOID
(WHEN REQ'D)
COPELAND SCROLL 7 1/2 HP AND UP LIQUID INJECTION SOLENOID
W/0 PROJECTION
W7 PROTECTION
INSERT NEUTRAL
WHITE WIRE
INTO NEUTRAL
LUG ON
BREAKER
29
Condensing Unit Installation and Operation Manual
30
STARTUP
WARNING
Know whether a circuit is open at the power supply or not. Remove all power before opening
control panels. Note: Some equipment has more than one power supply.
Always use a pressure regulator with a nitrogen tank. Do not exceed 2 pounds of pressure and vent
lines when brazing. Do not exceed 350 pounds of pressure for leak testing high side. Do not exceed
150 pounds of pressure for leak testing low side.
Always follow current EPA regulations and guidelines.
STARTUP
Leak Testing - Visually inspect all lines and joints
for proper piping practices.
Isolate - Compressors – Front Seat Service Valves
on Suction and Discharge
WARNING
Always recapture test charge in approved
recovery vessel for recycling.
Pressure Transducers - Close Angle Valves.
Oil Levels
Check oil levels for the compressor: Compressor
sight glass 1/8 to 1/2 full.
Open - Valves – to condenser, heat reclaim and
receiver.
Note: Check the oil sticker on the condensing unit
before adding oil.
Liquid Line Solenoid Valve - Solenoid should be
energized.
Test Charge
Using properly regulated dry nitrogen and R22
pressurize the system with vapor only. Add dry
nitrogen to bring the system pressure up to 150
psig. Using an electronic leak detector inspect all
connections. If a leak is found, isolate, repair, and
retest. Be sure system is at 150 psig and all valves
closed to isolate the leak are opened. After the
last leak is repaired and retested, the system must
stand unaltered for 12 hours with no pressure
drop from 150 psig.
Compressors Shipped Dry
Disconnect - Defrost Time Clock – Disconnect
power to the clock.
Verify - Refrigerant requirements for System,
Compressors, and TEV’s in merchandisers and
coolers.
Electrical supply and component requirements.
Compressors with Pre-Charged Oil as Standard
H-Series Condensing Units
Krack C Series Condensing Units
*H-Series Condensing Units with Bitzer
Compressors
*Any H-Series Condensing Units selected with Bitzer Compressors will not have oil pre-charged
or included as standard, but can be ordered as an option (ship loose).
PN 0708232_D
Condensing Unit Installation and Operation Manual
30
PN 0708232_D31
Evacuation
Nitrogen and moisture will remain in the system Repeat first two steps.
unless proper evacuation procedures are followed.
Nitrogen left in the system may cause head pressure Install the suction and liquid drier cores, if
problems. Moisture causes TEV ice blockage, wax applicable.
build up, acid oil, and sludge formation.
Pull a vacuum to 500 microns. Close vacuum
Do not simply purge the system – this procedure header valves and allow system to stand for a
is expensive, harmful to the environment, and may minimum of 12 hours. If the 500-micron vacuum
holds, charging may begin. If not the cause must
leave moisture and nitrogen behind.
be determined and corrected. Repeat the entire
Do not run the compressors to evacuate – evacuation procedure from the first step.
this procedure introduces moisture into the
WARNING
compressor’s crankcase oil and does not produce
Never
trap
liquid refrigerant
adequate vacuum to remove moisture from the
between closed valves.
rest of the system at normal temperatures.
A hydraulic explosion may result.
Setup
Using all copper lines and packless valves, connect
an 8 CFM or larger vacuum pump to suction or Pre-Charge Check List
liquid line. Connect one-micron vacuum gauge While the system is being evacuated preparation
at the pump. Plan procedures so breaking the for charging can begin. During any of the pull
vacuum with refrigerant will not introduce downs check:
contaminates into the system. The vacuum pump
must be in good condition filled with fresh oil to Check controller
Program if applicable.
achieve desired results.
Procedure
Pull a vacuum to 1500 microns. If the vacuum
fails to hold, determine the cause and correct.
Begin again with the first of the three required
evacuations.
Merchandisers
Electrical requirements and power supply
Electrical connections tight and clean
Proper fan operation
Thermostat setting.
Break the vacuum with refrigerant vapor to
a pressure of about 2psig. Do not exceed the
micron gauge transducer’s maximum pressure
limit. Liquid refrigerant may cause damage to
components through thermal shock or a pressure
surge to the transducer of the micron gauge.
Walk-in coolers and freezers
Electrical requirements and power supply
Electrical connections tight and clean
Proper fan operation
Thermostat setting.
Condensing Unit
Electrical requirements and power supply
Electrical connections tight and clean
Proper fan operation
Pressure settings
Defrost settings
Adjust head pressure valve
Condensing Unit Installation and Operation Manual
31
32
Air Cooled Condenser
Electrical requirements and power supply
Electrical connections tight and clean
Proper fan operation
Thermostat or pressure settings
Damper operation, if equipped.
Water Cooled Condenser
Flush water lines before connecting them to
water-cooled condenser.
Heat Reclaim and other systems
Electrical requirements and power supply
Electrical connections tight and clean
Component operation.
Note: Remember to reinstate control to unit
components jumpered to make test.
Set all mechanical pressure controls. Compressor
should still be isolated from the rest of the
system.
During the last evacuation look up and make
a list of the required control settings for the
system. High and low pressure, heat reclaim
lockout, winter control settings, and other
controls on the system should be noted.
Charging
Use standard procedures for charging while
watching for possible problems. Check:
Suction and discharge pressure
Oil level
Voltage differential and balance
Ampere draw and balance
Shut down the unit at first indication of unusual
operation, locate and correct cause.
Leak testing, evacuation and initial charging are
now completed.
Note: With non-azeotropic refrigerants, it is best
to charge the entire contents of the cylinder to
prevent fractionalization of the refrigerant when
charging vapor.
Winter Charge
When charging the condensing unit equipped
with winter head pressure control valve,
additional refrigerant is required for winter
operation. [See Table Below]
Compressor Motor Rotation (Scroll)
To check compressor rotation, use the following
procedure:
Install gauges on suction and discharge side
of compressor. A momentary compressor run
should cause a drop in suction header and a rise
in discharge header pressure.
With main disconnect OFF, switch OFF all
breakers or fuses in the control panel.
Turn ON main disconnect.
Coil Kit
Summer Charge (pounds) Winter Charge (pounds)
A
1
6
B
3
13
C
3
13
D
4
17
E
6
26
F
8
34
J
13
56
K
7
30
*Charges Based on R407a
PN 0708232_D
Condensing Unit Installation and Operation Manual
32
PN 0708232_D33
Defrost scheduling and timing
Condenser controls
Winter controls
TEV superheat adjustment
High and low pressure controls
Thermostat settings
Adjustments to electronic controls
Inlet / Outlet water temperature
(water cooled units only)
Look for the light on the single phase protector.
If it is not lit, turn OFF the main disconnect.
Have the field connections to the main breaker
of the unit corrected so the phase protector
indicates phase alignment (The light is lit).
Turn ON the main disconnect.
Momentarily turn ON the compressor and verify
correct pumping direction. If the compressor is
rotating backwards, change two legs on the load
side of the compressor contactor.
Note: DO NOT run compressors for more than 10
seconds during test.
Final Checks
Once the system is up and running it is the
responsibility of the installer to see that
all the fine adjustments are made so the
Condensing Unit delivers maximum temperature
performance and efficiency for the customer.
These include:
Thoroughly inspect all field piping while
the equipment is running and add supports
where line vibration occurs. Be sure additional
supports do not conflict with pipe expansion and
contraction.
When condition space is completely stocked,
check the operation of the system again.
At 48 hours of operation replace the liquid drier
and suction filter cores (if applicable).
At 90 days recheck the entire system, including
all field wiring.
Condensing Unit Installation and Operation Manual
33
34
This Procedure is not designed to cover system Remove bolts from suction and discharge service
changeover to a different refrigerant.
valves.
COMPRESSOR REPLACEMENT
Since each machine room tends to be unique, plan
carefully as to how you will move the compressor
without harming personnel, equipment or
the building. Before beginning removal of old
compressor make replacement unit ready to
install:
Verify:
Replacement compressor
Electrical requirements
Refrigerant application
Capacity
Piping hookup location and design
Suction and discharge gaskets
Mounting requirements
Remove mounting bolts.
When moving the compressor, use a come-along,
hoist or hydraulic lift to carry the weight.
Do not use the piping or panel to support a hoist
or come-along.
Do not use ceiling trusses to support a hoist or
come-along.
The rear support channel on the rack or a properly
constructed ceiling rail may be used to support a
hoist or come-along.
To make hookup and lifting easier, an eyebolt
may be installed in the rear top of the compressor
head.
Have compressor in an easily accessible position,
uncrated and unbolted from shipping pallets.
If a compressor removal table is used, slide the
compressor fully on to the table, then roll table to
Disconnect Electrical Supply:
overhead hoist or hydraulic lift area.
Turn off motor and control panel power supplies
to the Condensing Unit.
When the old compressor has been removed,
clean the suction and discharge service valve
Turn off control circuit and open all compressor gasket surfaces to shiny metal. Clean the gasket
circuit breakers or fuses.
surfaces on the new compressor to shiny metal.
Be careful not to groove or round the surfaces.
Tag and remove electrical wires and conduit from Gasket surfaces must be clean to prevent leaking.
the compressor.
Install the new compressor in reverse order of
Isolate Compressor:
removal. Do not open the new compressor to the
Front seat Suction and Discharge Service Valves. system until after it has been leak tested and triple
Close oil supply and equalizing lines.
evacuated.
Bleed compressor pressure through both discharge
REPLACING DRIER AND FILTER CORES
and suction access ports into an approved recovery
vessel.
Shut down the system. Isolate the core to be
replaced and bleed off pressure into an approved
Remove externally mounted components which recovery vessel. Open housing, replace core and
will be re-used on the replacement compressor.
close up. Pressurize, leak test and bring back into
line.
Plug holes to compressor manufacturer’s
specifications.
PN 0708232_D
Condensing Unit Installation and Operation Manual
34
PN 0708232_D35
APPENDIX A – DIMENSION DRAWINGS
Condensing Unit Installation and Operation Manual
35
36
AIR COOLED / WATER COOLED CONDENSING UNITS
SMALL SIZE
INDOOR UNIT
STANDARD LEGS
"HNSx-xxxxxxx-xx-A"
32.000
LEFT SIDE VIEW
40.250
MOUNTING
DIMENSIONS
TOP VIEW
41.750
FRONT VIEW
28.000
MOUNTING
DIMENSIONS
24.424
CONTROL PANEL
ISO VIEW
32.057
RIGHT SIDE VIEW
CONDENSER
BASE ASSEMBLY
DRAWING - SMALL ID
STD LEGS
0712528 B
36
Condensing Unit Installation and Operation Manual
PN 0708232_D
PN 0708232_D37
SMALL SIZE
OUTDOOR UNIT
STANDARD LEGS
"HTSx-xxxxxxx-xx-A"
32.000
LEFT SIDE VIEW
40.250
MOUNTING
DIMENSIONS
TOP VIEW
41.750
FRONT VIEW
28.000
MOUNTING
DIMENSIONS
24.462
CONTROL PANEL COVER
ISO VIEW
HINGED TOP FRONT PANEL
FRONT PANEL
RIGHT SIDE VIEW
FIXED TOP REAR PANEL
RH END PANEL
BASE ASSEMBLY
DRAWING - SMALL
OD STD LEGS
0712529 B
37
Condensing Unit Installation and Operation Manual
38
MEDIUM SIZE
INDOOR UNIT
STANDARD LEGS
"HNSx-xxxxxxx-xx-A"
34.750
LEFT SIDE VIEW
45.770
MOUNTING
DIMENSIONS
TOP VIEW
48.000
FRONT VIEW
28.248
MOUNTING
DIMENSIONS
41.924
CONTROL PANEL
ISO VIEW
RIGHT SIDE VIEW
CONDENSER
BASE
DRAWING - MEDIUM
ID STD LEGS
0712530 B
38
Condensing Unit Installation and Operation Manual
PN 0708232_D
PN 0708232_D39
MEDIUM SIZE
OUTDOOR UNIT
STANDARD LEGS
"HTSx-xxxxxxx-xx-A"
34.750
LEFT SIDE VIEW
45.770
MOUNTING
DIMENSIONS
TOP VIEW
48.000
FRONT VIEW
41.946
28.248
MOUNTING
DIMENSIONS
CONTROL PANEL
ISO VIEW
RIGHT END PANEL
FIXED TOP REAR PANEL
BASE
DRAWING - MEDIUM
OD STD LEGS
0712531 B
FRONT PANEL
HINGED TOP FRONT PANEL
RIGHT SIDE VIEW
39
Condensing Unit Installation and Operation Manual
40
LARGE SIZE
INDOOR UNIT
STANDARD LEGS
"HNSx-xxxxxxx-xx-A"
34.750
LEFT SIDE VIEW
81.770
MOUNTING
DIMENSIONS
TOP VIEW
84.000
FRONT VIEW
28.248
MOUNTING
DIMENSIONS
41.924
CONTROL PANEL
ISO VIEW
RIGHT SIDE VIEW
DRAWING - LARGE ID
STD LEGS
0712532 B
CONDENSER
BASE ASM
40
Condensing Unit Installation and Operation Manual
PN 0708232_D
PN 0708232_D41
LARGE SIZE
OUTDOOR UNIT
STANDARD LEGS
"HTSx-xxxxxxx-xx-A"
34.750
LEFT SIDE VIEW
81.770
MOUNTING
DIMENSIONS
TOP VIEW
84.000
FRONT VIEW
28.248
MOUNITING
DIMENSIONS
41.924
CONTROL PANEL
HINGED TOP FRONT PANEL
ISO VIEW
FRONT PANEL
RIGHT SIDE VIEW
FIXED TOP REAR PANEL
DRAWING - LARGE OD
STD LEGS
0712533 B
RIGHT END PANEL
BASE ASM
41
Condensing Unit Installation and Operation Manual
42
EXTRA LARGE SIZE
INDOOR UNIT
STANDARD LEGS
"HNSx-xxxxxxx-xx-A"
34.750
LEFT SIDE VIEW
96.770
MOUNTING
DIMENSIONS
TOP VIEW
99.000
FRONT VIEW
ISO VIEW
28.248
MOUNTING
DIMENSIONS
54.382
CONTROL PANEL
CONDENSER
BASE ASM
DRAWING - EXTRA
LARGE ID STD LEGS
0712534 B
42
Condensing Unit Installation and Operation Manual
PN 0708232_D
PN 0708232_D43
EXTRA LARGE SIZE
OUTDOOR UNIT
STANDARD LEGS
"HTSx-xxxxxxx-xx-A"
34.750
LEFT SIDE VIEW
96.770
MOUNTING
DIMENSIONS
TOP VIEW
99.000
FRONT VIEW
28.248
MOUNTING
DIMENSIONS
54.448
HINGED TOP FRONT PANEL
CONTROL PANEL
ISO VIEW
FRONT PANELS
RIGHT SIDE VIEW
FIXED TOP REAR PANEL
RIGHT END PANEL
BASE ASM
DRAWING - EXTRA
LARGE OD STD LEGS
0712535 B
43
Condensing Unit Installation and Operation Manual
44
SMALL SIZE
INDOOR UNIT
HEAVY DUTY LEGS
"HNHx-xxxxxxx-xx-A"
29.502
LEFT SIDE VIEW
35.748
MOUNTING
DIMENSIONS
TOP VIEW
RECEIVER
38.877
FRONT VIEW
26.223
MOUNTING
DIMENSIONS
32.111
CONTROL PANEL
ISO VIEW
RIGHT SIDE VIEW
CONDENSER
BASE ASSEMBLY
DRAWING - SMALL ID
HD LEGS
0712536 B
44
Condensing Unit Installation and Operation Manual
PN 0708232_D
PN 0708232_D45
SMALL SIZE
OUTDOOR UNIT
HEAVY DUTY LEGS
"HTHx-xxxxxxx-xx-A"
32.000
LEFT SIDE VIEW
34.871
MOUNTING
DIMENSIONS
TOP VIEW
RECEIVER
38.000
FRONT VIEW
32.149
28.743
MOUNTING
DIMENSIONS
CONTROL PANEL COVER
ISO VIEW
FIXED TOP REAR PANEL
BASE ASSEMBLY
0712537 B
DRAWING - SMALL
OD HD LEGS
HINGED TOP FRONT PANEL
FRONT PANEL
RIGHT SIDE VIEW
RH END PANEL
45
Condensing Unit Installation and Operation Manual
46
MEDIUM SIZE
INDOOR UNIT
HEAVY DUTY LEGS
"HNHx-xxxxxxx-xx-A"
37.252
LEFT SIDE VIEW
43.748
MOUNTING
DIMENSIONS
RECEIVER
TOP VIEW
46.877
FRONT VIEW
33.975
MOUNTING
DIMENSIONS
49.634
CONTROL PANEL
0712538 B
DRAWING - MEDIUM
ID HD LEGS
ISO VIEW
RIGHT SIDE VIEW
BASE
CONDENSER
46
Condensing Unit Installation and Operation Manual
PN 0708232_D
PN 0708232_D47
MEDIUM SIZE
OUTDOOR UNIT
HEAVY DUTY LEGS
"HTHx-xxxxxxx-xx-A"
40.871
MOUNTING
DIMENSIONS
TOP VIEW
44.000
44.570
1132.1
34.750
FRONT VIEW
RECEIVER
LEFT SIDE VIEW
49.638
31.503
MOUNTING
DIMENSIONS
CONTROL PANEL
ISO VIEW
FRONT PANEL
0712539 B
RIGHT END PANEL
FIXED TOP REAR PANEL
BASE
DRAWING - MEDIUM
OD HD LEGS
HINGED TOP FRONT PANEL
RIGHT END VIEW
47
Condensing Unit Installation and Operation Manual
48
LARGE SIZE
INDOOR UNIT
HEAVY DUTY LEGS
"HNHx-xxxxxxx-xx-A"
37.252
LEFT SIDE VIEW
43.748
MOUNTING
DIMENSIONS
RECEIVER
TOP VIEW
46.877
48.633
DIMENSION
WITH UPRIGHTS
FRONT VIEW
33.975
MOUNTING
DIMENSIONS
90.742
0712540 B
DRAWING - LARGE ID
HD LEGS
ISO VIEW
CONTROL PANEL
UPPER BASE ASSEMBLY
RIGHT SIDE VIEW
CONDENSER
CONDENSER
LOWER BASE ASSEMBLY
48
Condensing Unit Installation and Operation Manual
PN 0708232_D
PN 0708232_D49
LARGE SIZE
OUTDOOR UNIT
HEAVY DUTY LEGS
"HTHx-xxxxxxx-xx-A"
34.750
LEFT SIDE VIEW
40.871
MOUNTING HOLES
RECEIVER
TOP VIEW
80.000
FRONT VIEW
35.999
MOUNTING HOLES
31.503
MOUNTING HOLES
49.611
RIGHT END PANEL
BASE ASM
FIXED TOP REAR PANEL
FRONT PANEL
0712541 B
DRAWING - LARGE OD
HD LEGS
HINGED TOP FRONT PANEL
CONTROL PANEL
ISO VIEW
RIGHT SIDE VIEW
49
Condensing Unit Installation and Operation Manual
50
EXTRA LARGE SIZE
INDOOR UNIT
HEAVY DUTY LEGS
"HNHx-xxxxxxx-xx-A"
34.749
LEFT SIDE VIEW
47.401
MOUNTING
DIMENSIONS
RECEIVER
TOP VIEW
95.000
FRONT VIEW
44.470
HOUNTING
DIMENSIONS
31.503
MOUNTING
DIMENSIONS
62.104
CONTROL PANEL
ISO VIEW
RIGHT SIDE VIEW
BASE ASSEMBLY
CONDENSER
DRAWING- X-LARGE
ID HD LEGS
0712542 B
50
Condensing Unit Installation and Operation Manual
PN 0708232_D
LEFT SIDE VIEW
34.750
EXTRA LARGE SIZE
OUTDOOR UNIT
HEAVY DUTY LEGS
"HTHx-xxxxxxx-xx-A"
PN 0708232_D51
RECEIVER
47.401
MOUNTING
DIMENSIONS
TOP VIEW
95.000
FRONT VIEW
44.500
MOUNTING
DIMENSIONS
31.503
MOUNTING
DIMENSIONS
62.143
FIXED TOP REAR PANEL
FRONT PANELS
0712543 B
DRAWING - EXTRA
LARGE OD HD LEGS
ISO VIEW
HINGED TOP FRONT PANEL
CONTROL PANEL
RIGHT SIDE VIEW
RIGHT END PANEL
BASE ASM
51
Condensing Unit Installation and Operation Manual
52
SERVICE
TROUBLE SHOOTING INFORMATION
SPORLAN
http://www.sporlanonline.com
EMERSON
Fault Finder app
http://www.emersonclimate.com/en-us/
Resources/Mobile_Apps/Pages/mobileapps.aspx
SQUARED HOTLINE
888-SQUARED (888-778-2733)
Tech Support Line. Level One provides product
initial Tech Support and can connect the Caller
to Level 2, if required.
PN 0708232_D
Condensing Unit Installation and Operation Manual
52
Condensing Unit Installation and Operation Manual
Replace Components 4
Yes
Verify System Operation
Do Not Replace Components
4
Replace
Compressor
Does Not Restart
No
Resolve Application Issues 3
Yes
Is the Compressor Properly
Applied? Proper Refrigerant,
Voltage Application, Temp
Range?
No
Yes
Refer to Motor & Basic Wiring Section
Correct Voltage Supply Check
-- Excessive Cable Length
-- Undersized Cable
-- Power Supply/Utility Grid
-- Loose Electrical Connections
-- Bad Transformers
-- Worn Electrical Contacts
Refer to 3 Phase Voltage Monitor Section of Controls Module
3
Replace Appropriate Components
4
See Complete System Operation Worksheet
5
See Pressure Control Section of Controls Module
6
Check for Blown Gasket or Damaged Discharge Reeds
7
Check for Loss of Charge, Restriction or Faulty Control
8
Check for Dirty Condensers, Defective Condenser, Fan &
Motor, Refrigerant Overcharge, etc.
2
1
Verify System Operation
Compressor Starts
Runs Continuously
Verify System Operation 4
Do Not Replace Compressor 4, 8
Backseat It
Verify System Operation
Troubleshooting Guide
Balance System Pressure and Attempt to
Restart While Observing Amps
Replace
Compressor
Form No. 2004CC-126
© 2004 Copeland Corporation
No
Are The Start Components
(i.e. Relays, Motor Starters,
Contactors, and Capacitors)
OK?
Verify System Operation
Not High Amps
Restarts
Fix
Connections
Bad
High Amps
Fix Replace
Wiring
Good
Inspect/Replace
Compressor 6
HPC
Is the Discharge Service Valve Back
Seated?
Do Not Replace Compressor 4, 7
No
Verify System Operation
Yes
Still Short Cycling?
Do Not Replace Compressor
Fix Voltage Issues 2, 4
Check Electrical
Connections
Replace Protector
(If Accessible) or
Compressor
Wired
Correctly
Check
Wiring
Replace
Compressor
Wired
Incorrectly
Proper
Resistance
Improper
Resistance
Check Winding
Resistance and
Resistance to Ground 1
Normal Amps
Check Amp
Draw
Improper
Voltage
Verify System Operation
Proper
Voltage
DANGER!
Do Not Frontseat Suction Service
Valve if Doing so will Isolate the
LPC from the Compressor!
Do Not Replace Compressor4
LPC
Frontseat Suction Service Valve
Thermostat
Protector
Which Control is Short
Cycling?
Compressor Starts
Short Cycle
Check Voltage at
Compressor Terminals 1
High or Excessive
Amps
Allow Time for Compressor
Protector to Reset
Compressor Starts
Immediately Trips on Protector
PN 0708232_D53
U.S. & Canada 1-800-922-1919 • Mexico 01-800-890-2900 • WWW.HUSSMANN.COM
53
PN 0708232_D
Condensing Unit Installation and Operation Manual
No
Yes
Do Not Replace Compressor 2
Replace
Compressor
Verify System Operation
Not High Amps
High Amps
Windings OK
Verify System Operation
Resolve Application Issues 3
No
Is the Compressor Properly
Applied? Proper Refrigerant,
Voltage Application, Temp
Range?
Yes
1
2
Refer to Motor & Basic Wiring Module
See Complete System Operation Worksheet
3
Replace Appropriate Components
4
Check External Wiring
5
Correct Voltage Supply Check
-- Excessive Cable Length
-- Undersized Cable
-- Power Supply/Utility Grid
-- Loose Electrical Connections
-- Bad Transformers
-- Worn Electrical Contacts
Refer to 3 Phase Voltage Monitor Section of Controls Module
6
Check Fuses, Circuit Breakers, Control Circuit/Safety
ControlsThermostat, Contactors, etc.
1
Replace
Compressor
Windings Not OK
Check Winding
Resistance Using an
Ohmmeter
No
Do Not Replace Compressor
Check Components 2, 4
Replace
Compressor
Troubleshooting Guide
Replace
Compressor
Does Not Restart
Balance System Pressure and Attempt to
Restart While Observing Amps
Verify System Operation
Do Not Replace Compressor
Replace Components 2
Good
Replace Protector
(If Accessible) or
Compressor
Are The Start Components
(i.e. Relays, Motor Starters,
Contactors, and Capacitors)
OK?
Verify System Operation
Did Not Reset
Check Electrical
Connections
Restarts
Fix
Connections
Bad
Fix
Replace
Reset
Wired
Correctly
Check
Wiring
Proper
Resistance
No Voltage6
Do Not Replace Compressor
Fix Voltage Issues 4
Improper
Voltage 5
Allow Time for Compressor
Protector to Reset
No Amps
Wired
Incorrectly
Form No. 2004CC-126
© 2004 Copeland Corporation
Replace
Compressor
Improper
Resistance
Check Winding
Resistance and
Resistance to Ground 1
High or
Excessive
Check Amp
Draw
Proper
Voltage
Yes
Is Compressor Grounded?
Allow Time for Compressor
Protector to Reset
Check Voltage at
Compressor Terminals 1
Does Not Start
Instantly Blown Fuses
Compressor Not Running
54
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
54
To obtain warranty information
or other support, contact your
Hussmann representative.
Please include the model and
serial number of the product.
Hussmann Corporation, Corporate Headquarters: Bridgeton, Missouri, U.S.A. 63044-2483
01 October 2012