H&V Products
Tranquility 27® (TT) Series
Tranquility 20™ (TS) Series
Residential Horizontal & Vertical
Packaged Geothermal Heat Pumps
Installation, Operation &
Maintenance Instructions
97B0045N03
Revision: 9 March, 2011B
Table of Contents
Model Nomenclature
Storage
Pre-Installation
Horizontal Installation
Field Conversion of Air Discharge
Duct System Installation
Condensate Piping Installation
Vertical Installation
Water Connection Installation
Ground Loop Applications
Open Loop - Ground Water Systems
Water Quality Standards
Hot Water Generator
Electrical - Line Voltage
Electrical - Low Voltage Wiring
Accessory Connections
Electrical - Thermostat Wiring
ECM Blower Control
Blower Data
CXM Controls
3
4
4
5
7
8
8
9
11
11-12
13
15
16-18
19-20
21-22
22
23
24-25
26-28
29-30
Safety Features – CXM Control
Unit Commissioning
And Operating Conditions
Unit Start-Up and Operating Conditions
Unit Start-Up Procedure
Coax Pressure Drop Tables
Unit Operating Conditions
Preventive Maintenance
Troubleshooting
CXM Process Flow Chart
Functional & Performance Troubleshooting
Troubleshooting Form
Refrigerant Circuit Diagram
Warranty
Revision History
30-32
33
34
35
36
37-41
42
43
44
45-46
47
47
48
50
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Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Model Nomenclature: General Overview
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NOTE: Above model nomenclature is a general reference. Consult individual speciÀcation sections for detailed information.
Safety
Warnings, cautions and notices appear throughout this
manual. Read these items carefully before attempting any
installation, service, or troubleshooting of the equipment.
CAUTION: Indicates a potentially hazardous situation or an
unsafe practice, which if not avoided could result in minor or
moderate injury or product or property damage.
DANGER: Indicates an immediate hazardous situation, which
if not avoided will result in death or serious injury. DANGER
labels on unit access panels must be observed.
NOTICE: Noti¿cation of installation, operation or maintenance
information, which is important, but which is not hazardrelated.
WARNING: Indicates a potentially hazardous situation, which
if not avoided could result in death or serious injury.
ѥWARNING! ѥ
ѥWARNING! ѥ
WARNING! All refrigerant discharged from this unit must
be recovered WITHOUT EXCEPTION. Technicians must
follow industry accepted guidelines and all local, state, and
federal statutes for the recovery and disposal of refrigerants.
If a compressor is removed from this unit, refrigerant circuit
oil will remain in the compressor. To avoid leakage of
compressor oil, refrigerant lines of the compressor must be
sealed after it is removed.
WARNING! The EarthPure® Application and Service
Manual should be read and understood before attempting
to service refrigerant circuits with HFC-410A.
ѥWARNING! ѥ
WARNING! To avoid the release of refrigerant into the
atmosphere, the refrigerant circuit of this unit must be
serviced only by technicians who meet local, state, and
federal pro¿ciency requirements.
ѥCAUTION! ѥ
CAUTION! To avoid equipment damage, DO NOT use
these units as a source of heating or cooling during the
construction process. The mechanical components and
¿lters will quickly become clogged with construction dirt and
debris, which may cause system damage.
c l i m a t e m a s t e r. c o m
3
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
General Information
Pre Installation
Inspection
Upon receipt of the equipment, carefully check the shipment
against the bill of lading. Make sure all units have been
received. Inspect the packaging of each unit, and inspect each
unit for damage. Insure that the carrier makes proper notation
of any shortages or damage on all copies of the freight bill and
completes a common carrier inspection report. Concealed
damage not discovered during unloading must be reported
to the carrier within 15 days of receipt of shipment. If not ¿led
within 15 days, the freight company can deny the claim without
recourse. Note: It is the responsibility of the purchaser to ¿le
all necessary claims with the carrier. Notify your equipment
supplier of all damage within ¿fteen (15) days of shipment.
6.
7.
Loosen compressor bolts on units equipped with
compressor grommet vibration isolation until the
compressor rides freely on the grommets.
Locate and verify any hot water generator (HWG), hanger,
or other accessory kit located in the compressor section
or blower section.
Storage
Equipment should be stored in its original packaging in a
clean, dry area. Store units in an upright position at all times.
Stack units a maximum of 3 units high.
Unit Protection
Cover units on the job site with either the original packaging
or an equivalent protective covering. Cap the open ends
of pipes stored on the job site. In areas where painting,
plastering, and/or spraying has not been completed, all due
precautions must be taken to avoid physical damage to the
units and contamination by foreign material. Physical damage
and contamination may prevent proper start-up and may
result in costly equipment clean-up.
Examine all pipes, ¿ttings, and valves before installing any of
the system components. Remove any dirt or debris found in
or on these components.
Pre-Installation
Installation, Operation, and Maintenance instructions are
provided with each unit. Horizontal equipment is designed for
installation above false ceiling or in a ceiling plenum. Other
unit con¿gurations are typically installed in a mechanical
room. The installation site chosen should include adequate
service clearance around the unit. Before unit start-up,
read all manuals and become familiar with the unit and its
operation. Thoroughly check the system before operation.
ѥCAUTION! ѥ
CAUTION! DO NOT store or install units in corrosive
environments or in locations subject to temperature or
humidity extremes (e.g., attics, garages, rooftops, etc.).
Corrosive conditions and high temperature or humidity can
signi¿cantly reduce performance, reliability, and service life.
Always move and store units in an upright position. Tilting
units on their sides may cause equipment damage.
ѥCAUTION! ѥ
CAUTION! CUT HAZARD - Failure to follow this caution
may result in personal injury. Sheet metal parts may have
sharp edges or burrs. Use care and wear appropriate
protective clothing, safety glasses and gloves when
handling parts and servicing heat pumps.
Prepare units for installation as follows:
1. Compare the electrical data on the unit nameplate with
ordering and shipping information to verify that the correct
unit has been shipped.
2. Keep the cabinet covered with the original packaging until
installation is complete and all plastering, painting, etc. is
¿nished.
3. Verify refrigerant tubing is free of kinks or dents and that it
does not touch other unit components.
4. Inspect all electrical connections. Connections must be
clean and tight at the terminals.
5. Remove any blower support packaging (water-to-air
units only).
4
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Horizontal Installation
Horizontal Unit Location
Units are not designed for outdoor installation. Locate
the unit in an INDOOR area that allows enough space for
service personnel to perform typical maintenance or repairs
without removing unit from the ceiling. Horizontal units
are typically installed above a false ceiling or in a ceiling
plenum. Never install units in areas subject to freezing or
where humidity levels could cause cabinet condensation
(such as unconditioned spaces subject to 100% outside air).
Consideration should be given to access for easy removal of
the filter and access panels. Provide sufficient room to make
water, electrical, and duct connection(s).
If the unit is located in a confined space, such as a closet,
provisions must be made for return air to freely enter the
space by means of a louvered door, etc. Any access panel
screws that would be difficult to remove after the unit is
installed should be removed prior to setting the unit. Refer to
Figure 3 for an illustration of a typical installation. Refer to unit
specifications catalog for dimensional data.
Conform to the following guidelines when selecting
unit location:
1. Provide a hinged access door in concealed-spline or
plaster ceilings. Provide removable ceiling tiles in T-bar
or lay-in ceilings. Refer to horizontal unit dimensions for
specific series and model in unit specifications catalog.
Size the access opening to accommodate the service
technician during the removal or replacement of the
compressor and the removal or installation of the unit
itself.
2. Provide access to hanger brackets, water valves and
fittings. Provide screwdriver clearance to access panels,
discharge collars and all electrical connections.
3. DO NOT obstruct the space beneath the unit with piping,
electrical cables and other items that prohibit future
removal of components or the unit itself.
4. Use a manual portable jack/lift to lift and support the
weight of the unit during installation and servicing.
Mounting Horizontal Units
Horizontal units have hanger kits pre-installed from the
factory as shown in Figure 1. Figure 3 shows a typical
horizontal unit installation.
Horizontal heat pumps are typically suspended above a
ceiling or within a soffit using field supplied, threaded rods
sized to support the weight of the unit.
Use four (4) field supplied threaded rods and factory
provided vibration isolators to suspend the unit. Hang the
unit clear of the floor slab above and support the unit by the
mounting bracket assemblies only. DO NOT attach the unit
flush with the floor slab above.
Pitch the unit toward the drain as shown in Figure 2 to
improve the condensate drainage. On small units (less than
8.8kW) ensure that unit pitch does not cause condensate
leaks inside the cabinet.
Figure 1: Hanger Bracket
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Figure 2: Horizontal Unit Pitch
The installation of water source heat pump units and all
associated components, parts and accessories which make
up the installation shall be in accordance with the regulations
of ALL authorities having jurisdiction and MUST conform to
all applicable codes. It is the responsibility of the installing
contractor to determine and comply with ALL applicable
codes and regulations.
1/4” (6.4mm) pitch
per foot for drainage
Drain
Connection
c l i m a t e m a s t e r. c o m
5
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Horizontal Installation
Figure 3: Typical Horizontal Unit Installation
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Air Coil - To obtain maximum performance, the air coil should
be cleaned before start-up. A 10% solution of dishwasher
detergent and water is recommended for both sides of the coil.
A thorough water rinse should follow..
6
Geothermal Heat Pump Systems
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Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Field Conversion of Air Discharge
Overview - Horizontal units can be field converted between
side (straight) and back (end) discharge using the instructions
below.
Figure 4: Left Return Side to Back
Remove Screws
Water
Connection End
Note: It is not possible to field convert return air between left or
right return models due to the necessity of refrigeration copper
piping changes.
Return Air
Preparation - It is best to field convert the unit on the ground
before hanging. If the unit is already hung it should be taken
down for the field conversion.
Side Discharge
Side to Back Discharge Conversion
1.
Place unit in well lit area. Remove the screws as shown in
Figure 4 to free top panel and discharge panel.
2.
Lift out the access panel and set aside. Lift and rotate
the discharge panel to the other position as shown, being
careful with the blower wiring.
3.
Check blower wire routing and connections for tension or
contact with sheet metal edges. Reroute if necessary.
4.
Check refrigerant tubing for contact with
other components.
5.
Reinstall top panel and screws noting that the location for
some screws will have changed.
6.
Manually spin the fan wheel to ensure that the wheel is
not rubbing or obstructed.
7.
Replace access panels.
Water
Connection End
Rotate
Return Air
Move to Side
Replace Screws
Water
Connection End
Return Air
Back to Side Discharge Conversion - If the discharge is
changed from back to side, use above instruction noting that
illustrations will be reversed.
Drain
Left vs. Right Return - It is not possible to field convert return
air between left or right return models due to the necessity of
refrigeration copper piping changes. However, the conversion
process of side to back or back to side discharge for either
right or left return configuration is the same. In some cases,
it may be possible to rotate the entire unit 180 degrees if the
return air connection needs to be on the opposite side. Note
that rotating the unit will move the piping to the other end of the
unit.
Discharge Air
Back Discharge
Figure 5: Right Return Side to Back
Water
Connection End
Return Air
Supply Duct
Side Discharge
Water
Connection End
Return Air
Drain
Discharge Air
c l i m a t e m a s t e r. c o m
Back Discharge
7
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Horizontal Installation
Condensate Piping
Condensate Piping – Horizontal Units
Pitch the unit toward the drain as shown in Figure 2 to
improve the condensate drainage. On small units (less
than 2.5 tons/8.8 kW), insure that unit pitch does not cause
condensate leaks inside the cabinet.
Install condensate trap at each unit with the top of the trap
positioned below the unit condensate drain connection as
shown in Figure 6. Design the depth of the trap (water-seal)
based upon the amount of ESP capability of the blower
(where 2 inches [51mm] of ESP capability requires 2 inches
[51mm] of trap depth). As a general rule, 1-1/2 inch [38mm]
trap depth is the minimum.
Each unit must be installed with its own individual trap and
connection to the condensate line (main) or riser. Provide
a means to flush or blow out the condensate line. DO NOT
install units with a common trap and/or vent.
Always vent the condensate line when dirt or air can collect
in the line or a long horizontal drain line is required. Also vent
when large units are working against higher external static
pressure than other units connected to the same condensate
main since this may cause poor drainage for all units on the
line. WHEN A VENT IS INSTALLED IN THE DRAIN LINE, IT
MUST BE LOCATED AFTER THE TRAP IN THE DIRECTION
OF THE CONDENSATE FLOW.
Figure 6: Horizontal Condensate Connection
Trap
Depth
Vent
*3/4" FPT
Min 1.5"
[38mm]
1.5" [38mm]
3/4" PVC or
Copper by others
* Some units include a painted drain
connection. Using a threaded pipe or
similar device to clear any excess paint
accumulated inside this fitting may
ease final drain line installation.
1/4" per foot
(21mm per m)
drain slope
Rev.: 2/7/12B
CAUTION!
CAUTION! Ensure condensate line is pitched toward drain
1/4 inch per ft [21mm per m] of run.
DUCT SYSTEM INSTALLATION
Duct System Installation
The duct system should be sized to handle the design
airflow quietly. Refer to Figure 3 for horizontal duct system
details or figure 8 for vertical duct system details. A flexible
connector is recommended for both discharge and return
air duct connections on metal duct systems to eliminate
the transfer of vibration to the duct system. To maximize
sound attenuation of the unit blower, the supply and return
plenums should include internal fiberglass duct liner or be
constructed from ductboard for the first few feet. Application
of the unit to uninsulated ductwork in an unconditioned
space is not recommended, as the unit’s performance will be
adversely affected.
8
At least one 90° elbow should be included in the supply
duct to reduce air noise. If air noise or excessive air flow is
a problem, the blower speed can be changed. For airflow
charts, consult specifications catalog for the series and
model of the specific unit.
If the unit is connected to existing ductwork, a previous
check should have been made to insure that the ductwork
has the capacity to handle the airflow required for the unit.
If ducting is too small, as in the replacement of a heating
only system, larger ductwork should be installed. All existing
ductwork should be checked for leaks and repaired as
necessary.
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Vertical Installation
Vertical Unit Location
Units are not designed for outdoor installation. Locate
the unit in an INDOOR area that allows enough space for
service personnel to perform typical maintenance or repairs
without removing unit from the mechanical room/closet.
Vertical units are typically installed in a mechanical room
or closet. Never install units in areas subject to freezing or
where humidity levels could cause cabinet condensation
(such as unconditioned spaces subject to 100% outside air).
Consideration should be given to access for easy removal of
the filter and access panels. Provide sufficient room to make
water, electrical, and duct connection(s).
If the unit is located in a confined space, such as a closet,
provisions must be made for return air to freely enter the
space by means of a louvered door, etc. Any access panel
screws that would be difficult to remove after the unit is
installed should be removed prior to setting the unit. Refer to
Figures 7 and 8 for typical installation illustrations. Refer to
unit specifications catalog for dimensional data.
1. Install the unit on a piece of rubber, neoprene or other
mounting pad material for sound isolation. The pad
should be at least 3/8” [10mm] to 1/2” [13mm] in
thickness. Extend the pad beyond all four edges of the
unit.
2. Provide adequate clearance for filter replacement
and drain pan cleaning. Do not block filter access
with piping, conduit or other materials. Refer to unit
specifications for dimensional data.
3. Provide access for fan and fan motor maintenance and
for servicing the compressor and coils without removing
the unit.
4. Provide an unobstructed path to the unit within the
closet or mechanical room. Space should be sufficient to
allow removal of the unit, if necessary.
5. Provide access to water valves and fittings and
screwdriver access to the unit side panels, discharge
collar and all electrical connections.
Figure 7: Vertical Unit Mounting
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Figure 8: Typical Vertical Unit Installation Using Ducted
Return Air
Internally insulate supply
duct for first 1.2 m each way
to reduce noise
Use turning vanes in
supply transition
Flexible canvas duct
connector to reduce
noise and vibration
Downflow units may be installed directly on the floor. The
optional internal electric heat is rated for zero clearance to
combustible materials.
Rounded return
transition
The installation of water source heat pump units and all
associated components, parts and accessories which make
up the installation shall be in accordance with the regulations
of ALL authorities having jurisdiction and MUST conform to
all applicable codes. It is the responsibility of the installing
contractor to determine and comply with ALL applicable
codes and regulations.
Internally insulate return
transition duct to reduce
noise
c l i m a t e m a s t e r. c o m
Rev.: 6/2/09S
9
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Vertical Installation
Sound Attenuation for Vertical Units - Sound attenuation
is achieved by enclosing the unit within a small mechanical
room or a closet. Additional measures for sound control
include the following:
1.
Mount the unit so that the return air inlet is 90° to the
return air grille. Refer to Figure 9. Install a sound baffle
as illustrated to reduce line-of sight sound transmitted
through return air grilles.
2.
Mount the unit on a Tranquility Unit Isolation Pad to
minimize vibration transmission to the building structure.
For more information on Tranquility Unit Isolation Pads,
contact your distributor.
Condensate Piping for Vertical Units - Vertical units utilize
a condensate hose inside the cabinet as a trapping loop;
therefore an external trap is not necessary. Figure 10a shows
typical condensate connections. Figure 10b illustrates the
internal trap for a typical vertical heat pump. Each unit must be
installed with its own individual vent (where necessary) and a
means to flush or blow out the condensate drain line. Do not
install units with a common trap and/or vent.
Figure 10a: Vertical Condensate Drain
*3/4" FPT
Figure 9: Vertical Sound Attenuation
Vent
3/4" PVC
(21mm per m)
Water
Connections
Return
Air Inlet
Alternate
Condensate
Location
* Some units include a painted drain connection. Using a
threaded pipe or similar device to clear any excess paint
accumulated inside this fitting may ease final drain line installation.
Figure 10b: Vertical Internal Condensate Trap
10
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Water Connection Installation
External Flow Controller Mounting
The Flow Controller can be mounted beside the unit as
shown in Figure 12. Review the Flow Controller installation
manual for more details.
Water Connections-Residential (Distributor) Models
Residential models utilize swivel piping fittings for water
connections that are rated for 450 psi (3101 kPa) operating
pressure. The connections have a rubber gasket seal similar
to a garden hose gasket, which when mated to the flush
end of most 1” threaded male pipe fittings provides a leakfree seal without the need for thread sealing tape or joint
compound. Check for burrs and ensure that the rubber seal
is in the swivel connector prior to attempting any connection
(rubber seals are shipped attached to the swivel connector).
DO NOT OVER TIGHTEN or leaks may occur.
The female locking ring is threaded onto the pipe threads
which holds the male pipe end against the rubber gasket,
and seals the joint. HAND TIGHTEN ONLY! DO NOT
OVERTIGHTEN!
Figure 11: Water Connections
Swivel Nut
Stainless steel
snap ring
Hand Tighten
Only!
Do Not
Overtighten!
Gasket
Brass Adaptor
GROUND-LOOP HEAT PUMP APPLICATIONS
Figure 12: Typical Ground-Loop Application
Pre-Installation
Prior to installation, locate and mark all existing underground
utilities, piping, etc. Install loops for new construction before
sidewalks, patios, driveways, and other construction has
begun. During construction, accurately mark all ground loop
piping on the plot plan as an aid in avoiding potential future
damage to the installation.
To Thermostat
Piping Installation
The typical closed loop ground source system is shown in
Figure 12. All earth loop piping materials should be limited to
polyethylene fusion only for in-ground sections of the loop.
Galvanized or steel fittings should not be used at any time
due to their tendency to corrode. All plastic to metal threaded
fittings should be avoided due to their potential to leak in earth
coupled applications. A flanged fitting should be substituted.
P/T plugs should be used so that flow can be measured using
the pressure drop of the unit heat exchanger.
Earth loop temperatures can range between 25 and
110°F [-4 to 43°C]. Flow rates between 2.25 and 3 gpm
per ton [2.41 to 3.23 l/m per kW] of cooling capacity is
recommended in these applications.
High and
Low Voltage
Knockouts
Vibration Isolation Pad
CAUTION!
CAUTION! The following instructions represent industry
accepted installation practices for closed loop earth coupled
heat pump systems. Instructions are provided to assist the
contractor in installing trouble free ground loops. These
instructions are recommendations only. State/provincial
and local codes MUST be followed and installation MUST
conform to ALL applicable codes. It is the responsibility of
the installing contractor to determine and comply with ALL
applicable codes and regulations.
Test individual horizontal loop circuits before backfilling.
Test vertical U-bends and pond loop assemblies prior to
installation. Pressures of at least 100 psi [689 kPa] should be
used when testing. Do not exceed the pipe pressure rating.
Test entire system when all loops are assembled.
Flushing the Earth Loop
Once piping is completed between the unit, Flow Controller
and the ground loop (Figure 12), the loop is ready for final
purging and charging. A flush cart with at least a 1.5 hp
[1.1 kW] pump is required to achieve enough fluid velocity
in the loop piping system to purge air and dirt particles. An
c l i m a t e m a s t e r. c o m
11
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Ground-Loop Heat Pump Applications
antifreeze solution is used in most areas to prevent freezing.
All air and debris must be removed from the earth loop piping
before operation. Flush the loop with a high volume of water
at a minimum velocity of 2 fps (0.6 m/s) in all piping. The
steps below must be followed for proper flushing.
1. Fill loop with water from a garden hose through the flush
cart before using the flush cart pump to insure an even fill.
2. Once full, the flushing process can begin. Do not allow
the water level in the flush cart tank to drop below the
pump inlet line to avoid air being pumped back out to
the earth loop.
3. Try to maintain a fluid level in the tank above the return
tee so that air cannot be continuously mixed back into
the fluid. Surges of 50 psi (345 kPa) can be used to help
purge air pockets by simply shutting off the return valve
going into the flush cart reservoir. This “dead heads” the
pump to 50 psi (345 kPa). To purge, dead head the pump
until maximum pumping pressure is reached. Open the
return valve and a pressure surge will be sent through the
loop to help purge air pockets from the piping system.
4. Notice the drop in fluid level in the flush cart tank when
the return valve is shut off. If air is adequately purged from
the system, the level will drop only 1-2 inches (2.5 - 5 cm)
in a 10” (25 cm) diameter PVC flush tank (about a half
gallon [2.3 liters]), since liquids are incompressible. If the
level drops more than this, flushing should continue since
air is still being compressed in the loop fluid. Perform the
“dead head” procedure a number of times. Note: This
fluid level drop is your only indication of air in the loop.
5. Consult ClimaDry AOM for flushing instructions
for units equipped with ClimaDry Whole House
Dehumidification option.
Antifreeze may be added before, during or after the flushing
procedure. However, depending upon which time is chosen,
antifreeze could be wasted when emptying the flush cart
tank. See antifreeze section for more details.
Loop static pressure will fluctuate with the seasons.
Pressures will be higher in the winter months than during
the cooling season. This fluctuation is normal and should
be considered when charging the system initially. Run the
unit in either heating or cooling for a number of minutes to
condition the loop to a homogenous temperature. This is
a good time for tool cleanup, piping insulation, etc. Then,
perform final flush and pressurize the loop to a static
pressure of 50-75 psi [345-517 kPa] (winter) or 35-40 psi
[241-276 kPa] (summer). After pressurization, be sure to
loosen the plug at the end of the Grundfos loop pump
motor(s) to allow trapped air to be discharged and to insure
the motor housing has been flooded. This is not required
for Taco circulators. Insure that the Flow Controller provides
adequate flow through the unit by checking pressure drop
across the heat exchanger and compare to the pressure
drop tables at the back of the manual.
12
Antifreeze
In areas where minimum entering loop temperatures drop
below 40°F [5°C] or where piping will be routed through
areas subject to freezing, antifreeze is required. Alcohols
and glycols are commonly used as antifreeze; however your
local sales manager should be consulted for the antifreeze
best suited to your area. Low temperature protection should
be maintained to 15°F [9°C] below the lowest expected
entering loop temperature. For example, if 30°F [-1°C] is
the minimum expected entering loop temperature, the
leaving loop temperature would be 25 to 22°F [-4 to -6°C]
and low temperature protection should be at 15°F [-10°C].
Calculation is as follows:
30°F - 15°F = 15°F [-1°C - 9°C = -10°C].
All alcohols should be premixed and pumped from a
reservoir outside of the building when possible or introduced
under the water level to prevent fumes. Calculate the
total volume of fluid in the piping system. Then use the
percentage by volume shown in Table 2 for the amount
of antifreeze needed. Antifreeze concentration should be
checked from a well mixed sample using a hydrometer to
measure specific gravity.
Low Water Temperature Cutout Setting - CXM Control
When antifreeze is selected, the FP1 jumper (JW3) should
be clipped to select the low temperature (antifreeze 10°F
[-12.2°C]) set point and avoid nuisance faults (see “Low
Water Temperature Cutout Selection” in this manual). Note:
Low water temperature operation requires extended range
equipment.
Table 1: Approximate Fluid Volume (gal.) per 100' of Pipe
Fluid Volume (gal [liters] per 100’ [30 meters) Pipe)
Pipe
Size
Volume (gal) [liters]
1”
4.1 [15.3]
Copper
1.25”
6.4 [23.8]
2.5”
9.2 [34.3]
1”
3.9 [14.6]
3/4” IPS SDR11
2.8 [10.4]
Rubber Hose
Polyethylene
1” iPS SDR11
4.5 [16.7]
1.25” IPS SDR11
8.0 [29.8]
1.5” IPS SDR11
10.9 [40.7]
2” IPS SDR11
18.0 [67.0]
1.25” IPS SCH40
8.3 [30.9]
1.5” IPS SCH40
10.9 [40.7]
2” IPS SCH40
17.0 [63.4]
Unit Heat Exchanger
Typical
1.0 [3.8]
Flush Cart Tank
10” Dia x 3ft tall
[254mm x 91.4cm tall]
10 [37.9]
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Ground-Loop Heat Pump Applications
Open Loop - Ground Water Systems
Table 2: Antifreeze Percentages by Volume
Minimum Temperature for Low Temperature Protection
Type
10°F [-12.2°C]
15°F [-9.4°C]
20°F [-6.7°C]
25°F [-3.9°C]
25%
38%
29%
21%
25%
25%
16%
22%
20%
10%
15%
14%
Methanol
100% USP food grade Propylene Glycol
Ethanol*
* Must not be denatured with any petroleum based product
GROUND-WATER HEAT PUMP APPLICATIONS
Open Loop - Ground Water Systems
Typical open loop piping is shown in Figure 13. Shut off
valves should be included for ease of servicing. Boiler drains
or other valves should be “tee’d” into the lines to allow acid
flushing of the heat exchanger. Shut off valves should be
positioned to allow flow through the coax via the boiler drains
without allowing flow into the piping system. P/T plugs
should be used so that pressure drop and temperature can
be measured. Piping materials should be limited to copper
or PVC SCH80. Note: Due to the pressure and temperature
extremes, PVC SCH40 is not recommended.
Water quantity should be plentiful and of good quality.
Consult table 3 for water quality guidelines. The unit can
be ordered with either a copper or cupro-nickel water
heat exchanger. Consult table 3 for recommendations.
Copper is recommended for closed loop systems and open
loop ground water systems that are not high in mineral
content or corrosiveness. In conditions anticipating heavy
scale formation or in brackish water, a cupro-nickel heat
exchanger is recommended. In ground water situations
where scaling could be heavy or where biological growth
such as iron bacteria will be present, an open loop system
is not recommended. Heat exchanger coils may over time
lose heat exchange capabilities due to build up of mineral
deposits. Heat exchangers must only be serviced by a
qualified technician, as acid and special pumping equipment
is required. Desuperheater coils can likewise become scaled
and possibly plugged. In areas with extremely hard water,
the owner should be informed that the heat exchanger
may require occasional acid flushing. In some cases, the
desuperheater option should not be recommended due to
hard water conditions and additional maintenance required.
Water Quality Standards
Table 3 should be consulted for water quality requirements.
Scaling potential should be assessed using the pH/Calcium
hardness method. If the pH <7.5 and the Calcium hardness
is less than 100 ppm, scaling potential is low. If this method
yields numbers out of range of those listed, the Ryznar
Stability and Langelier Saturation indecies should be
calculated. Use the appropriate scaling surface temperature
for the application, 150°F [66°C] for direct use (well water/
open loop) and DHW (desuperheater); 90°F [32°F] for
indirect use. A monitoring plan should be implemented in
these probable scaling situations. Other water quality issues
such as iron fouling, corrosion prevention and erosion and
clogging should be referenced in Table 3.
Pressure Tank and Pump
Use a closed, bladder-type pressure tank to minimize
mineral formation due to air exposure. The pressure tank
should be sized to provide at least one minute continuous
run time of the pump using its drawdown capacity rating to
prevent pump short cycling. Discharge water from the unit
is not contaminated in any manner and can be disposed
of in various ways, depending on local building codes (e.g.
recharge well, storm sewer, drain field, adjacent stream
or pond, etc.). Most local codes forbid the use of sanitary
sewer for disposal. Consult your local building and zoning
department to assure compliance in your area.
The pump should be sized to handle the home’s domestic
water load (typically 5-9 gpm [23-41 l/m]) plus the flow rate
required for the heat pump. Pump sizing and expansion
tank must be chosen as complimentary items. For example,
an expansion tank that is too small can causing premature
pump failure due to short cycling. Variable speed pumping
applications should be considered for the inherent energy
savings and smaller pressure tank requirements.
Water Control Valve
Note the placement of the water control valve in figure 13.
Always maintain water pressure in the heat exchanger by
placing the water control valve(s) on the discharge line
to prevent mineral precipitation during the off-cycle. Pilot
operated slow closing valves are recommended to reduce
water hammer. If water hammer persists, a mini-expansion
tank can be mounted on the piping to help absorb the excess
hammer shock. Insure that the total ‘VA’ draw of the valve
can be supplied by the unit transformer. For instance, a slow
closing valve can draw up to 35VA. This can overload smaller
40 or 50 VA transformers depending on the other controls
in the circuit. A typical pilot operated solenoid valve draws
approximately 15VA (see Figure 22). Note the special wiring
diagrams for slow closing valves (Figures 23 & 24).
Flow Regulation
Flow regulation can be accomplished by two methods. One
method of flow regulation involves simply adjusting the ball
c l i m a t e m a s t e r. c o m
13
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Ground-Water Heat Pump Applications
valve or water control valve on the discharge line. Measure the
pressure drop through the unit heat exchanger, and determine
flow rate from tables 9a through 9c. Since the pressure is
constantly varying, two pressure gauges may be needed.
Adjust the valve until the desired flow of 1.5 to 2 gpm per ton
[2.0 to 2.6 l/m per kW] is achieved. A second method of flow
control requires a flow control device mounted on the outlet of
the water control valve. The device is typically a brass fitting
with an orifice of rubber or plastic material that is designed
to allow a specified flow rate. On occasion, flow control
devices may produce velocity noise that can be reduced by
applying some back pressure from the ball valve located on
the discharge line. Slightly closing the valve will spread the
pressure drop over both devices, lessening the velocity noise.
NOTE: When EWT is below 50°F [10°C], a minimum of 2
gpm per ton (2.6 l/m per kW) is required.
CAUTION!
CAUTION! Refrigerant pressure activated water regulating
valves should never be used with this equipment.
Water Coil Low Temperature Limit Setting
For all open loop systems the 30°F [-1.1°C] FP1 setting
(factory setting-water) should be used to avoid freeze
damage to the unit. See “Low Water Temperature Cutout
Selection” in this manual for details on the low limit setting.
Figure 13: Typical Open Loop/Well Application
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Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Water Quality Standards
Table 3: Water Quality Standards
Water Quality
Parameter
HX
Material
Closed
Recirculating
Open Loop and Recirculating Well
Scaling Potential - Primary Measurement
Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below
pH/Calcium Hardness
Method
All
-
pH < 7.5 and Ca Hardness <100ppm
Index Limits for Probable Scaling Situations - (Operation outside these limits is not recommended)
Scaling indexes should be calculated at 66°C for direct use and HWG applications, and at 32°C for indirect HX use.
A monitoring plan should be implemented.
Ryznar
6.0 - 7.5
All
Stability Index
If >7.5 minimize steel pipe use.
-0.5 to +0.5
Langelier
All
If <-0.5 minimize steel pipe use. Based upon 66°C HWG and
Saturation Index
Direct well, 29°C Indirect Well HX
Iron Fouling
Iron Fe 2+ (Ferrous)
(Bacterial Iron potential)
All
Iron Fouling
All
-
<0.2 ppm (Ferrous)
If Fe2+ (ferrous)>0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria.
-
<0.5 ppm of Oxygen
Above this level deposition will occur .
Corrosion Prevention
6 - 8.5
pH
All
Hydrogen Sulfide (H2S)
All
Ammonia ion as hydroxide, chloride,
nitrate and sulfate compounds
All
Monitor/treat as
needed
-
6 - 8.5
Minimize steel pipe below 7 and no open tanks with pH <8
<0.5 ppm
At H2S>0.2 ppm, avoid use of copper and copper nickel piping or HX's.
Rotten egg smell appears at 0.5 ppm level.
Copper alloy (bronze or brass) cast components are OK to <0.5 ppm.
-
<0.5 ppm
Maximum Allowable at maximum water temperature.
Maximum
Chloride Levels
Copper
Cupronickel
304 SS
316 SS
Titanium
-
10$C
<20ppm
<150 ppm
<400 ppm
<1000 ppm
>1000 ppm
24$C
NR
NR
<250 ppm
<550 ppm
>550 ppm
38 C
NR
NR
<150 ppm
< 375 ppm
>375 ppm
Erosion and Clogging
Particulate Size and
Erosion
All
<10 ppm of particles
and a maximum
velocity of 1.8 m/s
Filtered for maximum
841 micron [0.84 mm,
20 mesh] size.
<10 ppm (<1 ppm "sandfree” for reinjection) of particles and a maximum
velocity of 1.8 m/s. Filtered for maximum 841 micron 0.84 mm,
20 mesh] size. Any particulate that is not removed can potentially
clog components.
The ClimateMaster Water Quality Table provides water quality requirements for ClimateMaster coaxial heat exchangers. When water properties are outside of those
requirements, an external secondary heat exchanger must be used to isolate the heat pump heat exchanger from the unsuitable water. Failure to do so will void the
warranty for the coaxial heat exchanger.
Rev.: 3/22/2012
Notes:
‡ &ORVHG 5HFLUFXODWLQJ V\VWHP LV LGHQWLILHG E\ D closed pressurized piping system.
c l i m a t e m a s t e r. c o m
15
Residential H&V - 60Hz HFC-410A
R e v. : 7 A u g . , 2 0 1 1 B
Hot Water Generator
The HWG (Hot Water Generator) or desuperheater option
provides considerable operating cost savings by utilizing
excess heat energy from the heat pump to help satisfy
domestic hot water requirements. The HWG is active
throughout the year, providing virtually free hot water when
the heat pump operates in the cooling mode or hot water at
the COP of the heat pump during operation in the heating
mode. Actual HWG water heating capacities are provided in
the appropriate heat pump performance data.
Heat pumps equipped with the HWG option include a builtin water to refrigerant heat exchanger that eliminates the
need to tie into the heat pump refrigerant circuit in the field.
The control circuit and pump are also built in for residential
equipment. Figure 14 shows a typical example of HWG water
piping connections on a unit with built-in circulating pump.
This piping layout reduces scaling potential.
The temperature set point of the HWG is field selectable
to 125°F or 150°F . The 150°F set point allows more heat
storage from the HWG. For example, consider the amount
of heat that can be generated by the HWG when using the
125°F set point, versus the amount of heat that can be
generated by the HWG when using the 150°F set point.
Electric water heaters are recommended. If a gas, propane,
or oil water heater is used, a second preheat tank must be
installed (Figure 15). If the electric water heater has only a
single center element, the dual tank system is recommended
to insure a usable entering water temperature for the HWG.
Typically a single tank of at least 52 gallons (235 liters) is
used to limit installation costs and space. However, a dual
tank, as shown in Figure 15, is the most efficient system,
providing the maximum storage and temperate source water
to the HWG.
It is always advisable to use water softening equipment on
domestic water systems to reduce the scaling potential and
lengthen equipment life. In extreme water conditions, it may
be necessary to avoid the use of the HWG option since the
potential cost of frequent maintenance may offset or exceed
any savings. Consult Table 3 for scaling potential tests.
Figure 14: Typical HWG Installation
Shut-Off
Valve #1
Hot Outlet
Shut-Off
Valve #2
In a typical 50 gallon two-element electric water heater
the lower element should be turned down to 100°F, or the
lowest setting, to get the most from the HWG. The tank will
eventually stratify so that the lower 80% of the tank, or 40
gallons, becomes 100°F (controlled by the lower element).
The upper 20% of the tank, or 10 gallons, will be maintained
at 125°F (controlled by the upper element).
Using a 125°F set point, the HWG can heat the lower 40
gallons of water from 100°F to 125°F, providing up to 8,330
btu’s of heat. Using the 150°F set point, the HWG can heat
the same 40 gallons of water from 100°F to 150°F and the
remaining 10 gallons of water from 125°F to 150°F, providing
a total of up to 18,743 btu’s of heat, or more than twice as
much heat as when using the 125°F set point.
Shut-Off Valve #4
Shut-Off Valve #3
Upper
element to
120 - 130°F
[49 - 54°C]
Powered
Water Heater
Lower
element to
100 - 110°F
[38 - 43°C]
Field Supplied
3/4” Brass Nipple
and “T”
Insulated Water Lines 5/8” OD, 50 ft Maximum
[16mm OD, 15 Meters Maximum]
Figure 15: HWG Double Tank Installation
This example ignored standby losses of the tank. When
those losses are considered the additional savings are even
greater.
WARNING!
Shut-Off
Valve #1
Shut-Off
Valve #2
Cold Inlet
Upper
element to
120 - 130°F
[49 - 54°C]
Shut-Off Valve #4
Unpowered
Water Heater
Field Supplied
3/4” Brass Nipple
and “T”
Insulated Water Lines 5/8” OD, 50 ft Maximum
[16mm OD, 15 Meters Maximum]
Geothermal Heat Pump Systems
Hot Outlet
To House
Cold Inlet From
Domestic Supply
Hot Outlet
Shut-Off Valve #3
WARNING! A 150°F SETPOINT MAY LEAD TO
SCALDING OR BURNS. THE 150°F SET POINT MUST
ONLY BE USED ON SYSTEMS THAT EMPLOY AN
APPROVED ANTI-SCALD VALVE.
16
Cold Inlet From
Domestic Supply
Powered
Water Heater
Lower
element to
110 - 120°F
[43 - 49°C]
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Hot Water Generator
Installation
The HWG is controlled by two sensors and a microprocessor
control. One sensor is located on the compressor discharge
line to sense the discharge refrigerant temperature. The
other sensor is located on the HWG heat exchanger’s “Water
In” line to sense the potable water temperature.
ANTI-SCALD
VALVE PIPING
CONNECTIONS
ANTI-SCALD
VALVE
ѥWARNING! ѥ
HOT WATER
TO HOUSE
The microprocessor control monitors the refrigerant and
water temperatures to determine when to operate the HWG.
The HWG will operate any time the refrigerant temperature
is sufÄciently above the water temperature. Once the
HWG has satisÄed the water heating demand during a
heat pump run cycle, the controller will cycle the pump at
regular Intervals to determine if an additional HWG cycle
can be utilized. The microprocessor control Includes 3 DIP
switches, SW10 (HWG PUMP TEST), SW11 (HWG TEMP),
and SW12 (HWG STATUS).
SW10 HWG PUMP TEST. When this switch is in the “ON”
position, the HWG pump is forced to operate even if there
is no call for the HWG. This mode may be beneÄcial to
assist in purging the system of air during Initial start up.
When SW10 is in the “OFF” position, the HWG will operate
normally. This switch is shipped from the factory in the
“OFF” (normal) position. NOTE; If left in the “On” position for
5 minutes, the pump control will revert to normal operation.
SW11 HWG TEMP. The control setpoint of the HWG can
be set to either of two temperatures, 125°F or 150°F. When
SW11 is in the “ON” position the HWG setpoint is 150°F.
When SW11 is in the “OFF” position the HWG setpoint is
ѥWARNING! ѥ
WARNING! USING A 150°F SETPOINT ON THE
HWG WILL RESULT IN WATER TEMPERATURES
SUFFICIENT TO CAUSE SEVERE PHYSICAL INJURY
IN THE FORM OF SCALDING OR BURNS, EVEN
WHEN THE HOT WATER TANK TEMPERATURE
SETTING IS VISIBLY SET BELOW 150°F. THE 150°F
HWG SETPOINT MUST ONLY BE USED ON SYSTEMS
THAT EMPLOY AN APPROVED ANTI-SCALD VALVE
(PART NUMBER AVAS4) AT THE HOT WATER
STORAGE TANK WITH SUCH VALVE PROPERLY
SET TO CONTROL WATER TEMPERATURES
DISTRIBUTED TO ALL HOT WATER OUTLETS AT A
TEMPERATURE LEVEL THAT PREVENTS SCALDING
OR BURNS!
C
M
H
8” MAX
WARNING! UNDER NO CIRCUMSTANCES SHOULD
THE SENSORS BE DISCONNECTED OR REMOVED
AS FULL LOAD CONDITIONS CAN DRIVE HOT
WATER TANK TEMPERATURES FAR ABOVE SAFE
TEMPERATURE LEVELS IF SENSORS HAVE BEEN
DISCONNECTED OR REMOVED.
CHECK VALVE
COLD WATER
SUPPLY
WATER HEATER
125°F. This switch Is shipped from the factory in the “OFF”
(125°F) position.
SW12 HWG STATUS. This switch controls operation of
the HWG. When SW12 is in the “ON” position the HWG is
disabled and will not operate. When SW12 is in the “OFF”
position the HWG is in the enabled mode and will operate
normally. This switch is shipped from the factory in the
“ON” (disabled) position. CAUTION: DO NOT PLACE THIS
SWITCH IN THE ENABLED POSITION UNITL THE HWG
PIPING IS CONNECTED, FILLED WITH WATER, AND
PURGED OR PUMP DAMAGE WILL OCCUR.
When the control is powered and the HWG pump output
is not active, the status LED (AN1) will be “On”. When the
HWG pump output is active for water temperature sampling
or HWG operation, the status LED will slowly Åash (On 1
second, Off 1 second).
If the control has detected a fault, the status LED will Åash a
numeric fault code as follows:
Hot Water Sensor Fault
Compressor Discharge sensor fault
High Water Temperature (>160ºF)
Control Logic Error
1 Åash
2 Åashes
3 Åashes
4 Åashes
Fault code Åashes have a duration of 0.4 seconds with
a 3 second pause between fault codes. For example, a
“Compressor Discharge sensor fault” will be four Åashes
0.4 seconds long, then a 3 second pause, then four Åashes
again, etc.
c l i m a t e m a s t e r. c o m
17
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Hot Water Generator
Warning! The HWG pump Is fully wired from the
factory. Use extreme caution when working around
the microprocessor control as it contains line voltage
connections that presents a shock hazard that can
cause severe injury or death!
The heat pump, water piping, pump, and hot water tank
should be located where the ambient temperature does
not fall below 50°F [10°C]. Keep water piping lengths at a
minimum. DO NOT use a one way length greater than 50 ft.
(one way) [15 m]. See Table 7 for recommended piping sizes
and maximum lengths.
All installations must be in accordance with local codes. The
installer is responsible for knowing the local requirements,
and for performing the installation accordingly. DO NOT
connect the pump wiring until “Initial Start-Up” section,
below. Powering the pump before all installation steps are
completed may damage the pump.
Water Tank Preparation
1. Turn off power or fuel supply to the hot water tank.
2. Connect a hose to the drain valve on the water tank.
3. Shut off the cold water supply to the water tank.
4. Open the drain valve and open the pressure relief valve
or a hot water faucet to drain tank.
5. When using an existing tank, it should be flushed with
cold water after it is drained until the water leaving the
drain hose is clear and free of sediment.
6. Close all valves and remove the drain hose.
7. Install HWG water piping.
HWG Water Piping
1. Using at least 5/8” [16mm] O.D. copper, route and install
the water piping and valves as shown in Figures 14 or
15. Install an approved anti-scald valve if the 150°F HWG
setpoint is or will be selected. An appropriate method
must be employed to purge air from the HWG piping.
This may be accomplished by flushing water through the
HWG (as In Figures 14 and 15) or by Installing an air vent
at the high point of the HWG piping system.
2. Insulate all HWG water piping with no less than 3/8”
[10mm] wall closed cell insulation.
3. Open both shut off valves and make sure the tank drain
valve is closed.
Water Tank Refill
1. Close valve #4. Ensure that the HWG valves (valves #2
and #3) are open. Open the cold water supply (valve #1)
to fill the tank through the HWG piping. This will purge air
from the HWG piping.
2. Open a hot water faucet to vent air from the system until
water flows from faucet; turn off faucet. Open valve #4.
3. Depress the hot water tank pressure relief valve handle to
ensure that there is no air remaining in the tank.
4. Inspect all work for leaks.
18
5. Before restoring power or fuel supply to the water heater,
adjust the temperature setting on the tank thermostat(s)
to insure maximum utilization of the heat available from
the refrigeration system and conserve the most energy.
On tanks with both upper and lower elements and
thermostats, the lower element should be turned down
to 100°F [38°C] or the lowest setting; the upper element
should be adjusted to 120-130°F [49-54°C]. Depending
upon the specific needs of the customer, you may want
to adjust the upper element differently. On tanks with a
single thermostat, a preheat tank should be used (Fig 15).
6. Replace access cover(s) and restore power or
fuel supply.
Initial Start-Up
1. Make sure all valves in the HWG water circuit are
fully open.
2. Turn on the heat pump and allow it to run for
10-15 minutes.
3. Set SW12 to the “OFF” position (enabled) to engage the
HWG.
4. The HWG pump should not run if the compressor is not
running.
5. The temperature difference between the water entering
and leaving the HWG coil should be approximately
5-10°F [3-6°C].
6. Allow the unit to operate for 20 to 30 minutes to insure
that it is functioning properly.
Table 7: HWG Water Piping Sizes and Length
Unit
Nominal
Tonnage
Nominal
HWG Flow
(gpm)
1/2" Copper
(max length*)
3/4" Copper
(max length*)
1.5
0.6
50
-
2.0
0.8
50
-
2.5
1.0
50
-
3.0
1.2
50
-
3.5
1.4
50
-
4.0
1.6
45
50
5.0
2.0
25
50
6.0
2.4
10
50
*Maximum length is equivalent length (in feet) one way of type L
copper.
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Electrical - Line Voltage
WARNING!
CAUTION!
WARNING! To avoid possible injury or death due to
electrical shock, open the power supply disconnect switch
and secure it in an open position during installation.
CAUTION! Use only copper conductors for field installed
electrical wiring. Unit terminals are not designed to accept
other types of conductors.
Table 4a: Tranquility® 27 (TT) Series Electrical Data
All TT Units with Emerson ECM Fan Motor
Compressor
TT Units (ECM) Standard
TT Units (ECM) with ClimaDry
Ext
Loop
Pump
FLA
Fan
Motor
FLA
Total
Unit
FLA
Min
Circuit
Amps
Max
Fuse/
HACR
(2)
ClimaDry
Pump
FLA
Total
Unit
FLA
Min
Circuit
Amps
Max/
Fuse
HACR
(2)
RLA
LRA
Qty
HWG
Pump
FLA
026
10.3
52.0
1
0.40
4.0
3.9
18.6
21.2
30
0.8
19.4
22.0
30
038
16.7
82.0
1
0.40
4.0
3.9
25.0
29.2
45
0.8
25.8
30.0
45
049
21.2
96.0
1
0.40
4.0
6.9
32.5
37.8
50
1.07
33.6
38.9
60
064
25.6
118.0
1
0.40
4.0
6.9
36.9
43.3
60
1.07
38.0
44.4
60
072
27.2
150.0
1
0.40
4.0
6.9
38.5
45.3
70
1.07
39.6
46.4
70
Model
Rated Voltage of 208-230/60/1
HACR circuit breaker in USA only
Min/Max Voltage of 197/254
All fuses Class RK-5
Table 4b: Tranquility® 20 (TS) Series Electrical Data
Standard TS Unit
Compressor
TS Unit with ClimaDry
Ext
Loop
Pump
FLA
Fan
Motor
FLA
Min
Circuit
Amps
ClimaDry
Pump
FLA
Total
Unit
FLA
Min
Circuit
Amps
Max Fuse/
HACR (2)
RLA
LRA
Qty
HWG
Pump
FLA
018
9.0
48.0
1
0.40
4.0
1.0
14.4
16.7
25
0.8
15.2
17.5
25
024
12.8
60.0
1
0.40
4.0
1.1
18.3
21.5
30
0.8
19.1
22.3
35
030
13.5
61.0
1
0.40
4.0
1.4
19.3
22.7
35
0.8
20.1
23.5
35
036
14.7
72.5
1
0.40
4.0
2.1
21.2
24.9
35
0.8
22.0
25.7
40
042
15.4
83.0
1
0.40
4.0
2.1
21.9
25.8
40
0.8
22.7
26.6
40
048
20.5
109.0
1
0.40
4.0
3.0
27.9
33.0
50
1.07
29.0
34.1
50
060
26.9
145.0
1
0.40
4.0
4.9
36.2
42.9
60
1.07
37.3
44.0
70
Model
Total
Unit
FLA
Max
Fuse/
HACR
(2)
PSC Electrical Data
ECM Electrical Data
018
9.0
48.0
1
0.40
4.0
3.9
17.3
19.6
25
0.8
18.1
20.4
25
024
12.8
60.0
1
0.40
4.0
3.9
21.1
24.3
35
0.8
21.9
25.1
35
030
13.5
61.0
1
0.40
4.0
3.9
21.8
25.2
35
0.8
22.6
26.0
35
036
14.7
72.5
1
0.40
4.0
3.9
23.0
26.7
40
0.8
23.8
27.5
40
042
15.4
83.0
1
0.40
4.0
3.9
23.7
27.6
40
0.8
24.5
28.4
40
048
20.5
109.0
1
0.40
4.0
6.9
31.8
36.9
50
1.07
32.9
38.0
50
060
26.9
145.0
1
0.40
4.0
6.9
38.2
44.9
70
1.07
39.3
46.0
70
070
30.1
158.0
1
0.40
4.0
6.9
41.4
48.9
70
1.07
42.5
50.0
80
Rated Voltage of 208-230/60/1
HACR circuit breaker in USA only
Min/Max Voltage of 197/254
All fuses Class RK-5
c l i m a t e m a s t e r. c o m
19
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Electrical - Line Voltage
Figure 16: TT/TS Single Phase Line Voltage
Field Wiring
WARNING!
WARNING! Disconnect electrical power source to prevent
injury or death from electrical shock.
CAUTION!
CAUTION! Use only copper conductors for field installed
electrical wiring. Unit terminals are not designed to accept
other types of conductors.
Electrical - Line Voltage
All field installed wiring, including electrical ground, must
comply with the National Electrical Code as well as all
applicable local codes. Refer to the unit electrical data for
fuse sizes. Consult wiring diagram for field connections that
must be made by the installing (or electrical) contractor.
All final electrical connections must be made with a length of
flexible conduit to minimize vibration and sound transmission
to the building.
General Line Voltage Wiring
Be sure the available power is the same voltage and phase
shown on the unit serial plate. Line and low voltage wiring
must be done in accordance with local codes or the National
Electric Code, whichever is applicable.
Power Connection
Line voltage connection is made by connecting the incoming
line voltage wires to the “L” side of the contactor as shown
in Figure 16. Consult Tables 4a through 4b for correct fuse
size.
Unit Power Supply
(see electrical table for wire
and breaker size)
Special Note for AHRI Testing: To achieve rated airflow for
AHRI testing purposes on all PSC products, it is necessary
to change the fan speed to “HI” speed. When the heat pump
has experienced less than 100 operational hours and the coil
has not had sufficient time to be “seasoned”, it is necessary
to clean the coil with a mild surfactant such as Calgon to
remove the oils left by manufacturing processes and enable
the condensate to properly “sheet” off of the coil.
Figure 17: PSC Motor Speed Selection
208 Volt Operation
All residential 208-230 Volt units are factory wired for 230
Volt operation. The transformer may be switched to the 208V
tap as illustrated on the wiring diagram by switching the red
(208V) and the orange (230V) wires at the contactor terminal.
Blower Speed Selection – Units with PSC Motor
PSC (Permanent Split Capacitor) blower fan speed can be
changed by moving the blue wire on the fan motor terminal
block to the desired speed as shown in Figure 17. Optional
ECM motor speeds are set via low voltage controls (see
“ECM Blower Control”). Most units are shipped on the
medium speed tap. Consult specifications catalog for
specific unit airflow tables. Typical unit design delivers rated
airflow at nominal static (0.15 in. w.g. [37Pa]) on medium
speed and rated airflow at a higher static (0.4 to 0.5 in. w.g.
[100 to 125 Pa]) on high speed for applications where higher
static is required. Low speed will deliver approximately 85%
of rated airflow at 0.10 in. w.g. [25 Pa].
20
Connect the blue wire to:
H for High speed fan
M for Medium speed fan
L for Low speed fan
Medium is factory setting
Fan Motor
HWG Wiring (Split Units Only)
The hot water generator pump power wiring is disabled at
the factory to prevent operating the HWG pump “dry.” After
all HWG piping is completed and air purged from the water
piping, the pump power wires should be applied to terminals
on the HWG power block PB2 as shown in the unit wiring
diagram. This connection can also serve as a HWG disable
when servicing the unit.
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Electrical - Low Voltage Wiring
Thermostat Connections
The thermostat should be wired directly to the CXM board
(units with PSC fan). Units with optional ECM motor include
factory wiring from the CXM board to the ECM interface
board. Thermostat wiring for these units should be connected
to the ECM interface board. Figure 18 shows wiring for TT/
TS units with PSC or optional ECM motor. See “Electrical –
Thermostat” for speciÄc terminal connections.
Figure 18: TT/TS Low Voltage Field Wiring
Low voltage
Äeld wiring
for units with
PSC FAN
(ECM board
will not be
present)
Low Water Temperature Cutout Selection
The CXM control allows the Äeld selection of low water (or
water-antifreeze solution) temperature limit by clipping jumper
JW3, which changes the sensing temperature associated with
thermistor FP1. Note that the FP1 thermistor is located on
the refrigerant line between the coaxial heat exchanger and
expansion device (TXV). Therefore, FP1 is sensing refrigerant
temperature, not water temperature, which is a better indication
of how water Åow rate/temperature is affecting the refrigeration
circuit.
The factory setting for FP1 is for systems using water (30°F
[-1.1°C] refrigerant temperature). In low water temperature
(extended range) applications with antifreeze (most ground
loops), jumper JW3 should be clipped as shown in Figure
19 to change the setting to 10°F [-12.2°C] refrigerant
temperature, a more suitable temperature when using
an antifreeze solution. All residential units include water/
refrigerant circuit insulation to prevent internal condensation,
which is required when operating with entering water
temperatures below 59°F [15°C].
Figure 19: FP1 Limit Setting
Low voltage Äeld wiring for units with ECM fan
CXM PCB
c l i m a t e m a s t e r. c o m
JW3-FP1
jumper should
be clipped for
low temperature
operation
21
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Electrical - Low Voltage Wiring
Accessory Connections
A terminal paralleling the compressor contactor coil has
been provided on the CXM control. Terminal “A” is designed
to control accessory devices, such as water valves. Note:
This terminal should be used only with 24 Volt signals
and not line voltage. Terminal “A” is energized with the
compressor contactor. See Figure 20 or the speciÄc unit
wiring diagram for details.
Figure 23 illustrates piping for two-stage solenoid valves.
Review ¿gures 20-22 for wiring of stage one valve. Stage two
valve should be wired between terminal “Y2” (ECM board)
and terminal “C.”
Note: When EWT is below 50°F [10°C], a minimum of 2
gpm per ton (2.6 l/m per kW) is required.
Figure 21: AVM Valve Wiring
C
Y1
Figure 20: Accessory Wiring
2
3
1
1. The valve will remain open during a unit lockout.
2. The valve will draw approximately 25-35 VA through the
“Y” signal of the thermostat.
Note: This valve can overheat the anticipator of an
electromechanical thermostat. Therefore, only relay or
triac based thermostats should be used.
Two-stage Units
Tranquility 27™ (TT) two-stage units should be designed with
two parallel valves for ground water applications to limit water
use during ¿rst stage operation. For example, at 1.5 gpm/
ton [2.0 l/m per kW], an 049 unit requires 6 gpm [23 l/m] for
full load (2nd stage) operation, but only 4 gpm [15 l/m] during
1st stage operation. Since the unit will operate on ¿rst stage
80-90% of the time, signi¿cant water savings can be realized
by using two parallel solenoid valves with two Àow regulators.
In the example above, stage one solenoid would be installed
with a 4 gpm [15 l/m] Àow regulator on the outlet, while stage
two would utilize a 2 gpm [8 l/m] Àow regulator. When stage
one is operating, the second solenoid valve will be closed.
When stage two is operating, both valves will be open,
allowing full load Àow rate.
22
Y1
Water Solenoid Valves
An external solenoid valve(s) should be used on ground
water installations to shut off Àow to the unit when the
compressor is not operating. A slow closing valve may be
required to help reduce water hammer. Figure 20 shows
typical wiring for a 24VAC external solenoid valve. Figures
21 and 22 illustrate typical slow closing water control valve
wiring for Taco 500 series (ClimateMaster P/N AVM…)
and Taco SBV series valves. Slow closing valves take
approximately 60 seconds to open (very little water will Àow
before 45 seconds). Once fully open, an end switch allows
the compressor to be energized. Only relay or triac based
electronic thermostats should be used with slow closing
valves. When wired as shown, the slow closing valve will
operate properly with the following notations:
C
Heater Switch
AVM
Taco Valve
Thermostat
Figure 22: Taco SBV Valve Wiring
Figure 23: Two-Stage Piping
Solenoid
Valve
Flow
Regulator
Stage 2
To Discharge
OUT
Stage 1
IN
Geothermal Heat Pump Systems
From Water Source
NOTE: Shut-off valves, strainers and
other required components not shown.
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Electrical - Thermostat Wiring
Figure 24: Units With Optional ECM Fan.
ѥCAUTION! ѥ
Connection to ECM Control
CAUTION! Many units are installed with a factory or ¿eld
supplied manual or electric shut-off valve. DAMAGE
WILL OCCUR if shut-off valve is closed during unit
operation. A high pressure switch must be installed on
the heat pump side of any ¿eld provided shut-off valves
and connected to the heat pump controls in series with
the built-in refrigerant circuit high pressure switch to
disable compressor operation if water pressure exceeds
pressure switch setting. The ¿eld installed high pressure
switch shall have a cut-out pressure of 300 psig and a
cut-in pressure of 250 psig. This pressure switch can
be ordered from ClimateMaster with a 1/4” internal Àare
connection as part number 39B0005N02.
ATP32U04 Thermostat
Compressor
Compressor Stage 2
Y1
Auxiliary Heat
Dehumidification
W
DH
Reversing Valve
Fan
O
24Vac Hot
24Vac Common
Fault LED
R
Y2
G
C
L
ECM
Board
Y1
Y2
W
DH
O
G
R
C
AL1
ѥCAUTION! ѥ
CAUTION! Refrigerant pressure activated water regulating
valves should never be used with ClimateMaster
equipment.
Thermostat Installation
The thermostat should be located on an interior wall in a
larger room, away from supply duct drafts. DO NOT locate
the thermostat in areas subject to sunlight, drafts or on
external walls. The wire access hole behind the thermostat
may in certain cases need to be sealed to prevent erroneous
temperature measurement. Position the thermostat back
plate against the wall so that it appears level and so the
thermostat wires protrude through the middle of the back
plate. Mark the position of the back plate mounting holes
and drill holes with a 3/16” (5mm) bit. Install supplied
anchors and secure plate to the wall. Thermostat wire must
be 18 AWG wire. Wire the appropriate thermostat as shown
in Figures 24 and 25 to the low voltage terminal strip on the
CXM (units with PSC motor) or ECM control board (units
with ECM motor). Practically any heat pump thermostat will
work with these units, provided it has the correct number of
heating and cooling stages.
NOTICE: Units with ClimaDry whole house dehumidiÄcation
option require a separate humidistat or thermostat part
number ATP32U04 (See ClimaDry AOM for more details).
Units with CXM or DXM board and ECM fan motor, utilizing ECM dehumidification
mode (without ClimaDry option)
Notes:
1) Units with whole house dehumidification option have slightly different
thermostat wiring.Terminal DH at the thermostat is connected to terminal H at
the DXM board
2) ECM dehumidification mode slows down fan speed in the cooling mode when
dehumidification output from thermostat is active. Normal heating and cooling fan
speeds are not affected.
3) ECM board DIP switch SW9 must be in dehumid. mode for
ECM dehumidification mode.
Figure 25: Typical Thermostat 2 Heat/1 Cool (PSC Fan)
Connection to CXM Control
ATM21U01 Thermostat
CXM
Y
Compressor
Heating Stage 2 Y2/W
W
Reversing Valve
Fan
24Vac Hot
24Vac Common
Fault LED
c l i m a t e m a s t e r. c o m
Y
O
O
G
G
R
R
C
C
L
AL1
23
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
ECM Blower Control
The ECM fan is controlled by an interface board that
converts thermostat inputs and ¿eld selectable CFM
settings to signals used by the ECM motor controller.
Units manufactured before July 2005 have version I (P/N
69243707). Units manufactured after July 2005 have version
II (P/N 17B0019N01). Fan speeds are selected with jumpers
for version I or via a nine position DIP switch for version II. To
take full advantage of the ECM motor features, a multi-stage
thermostat should be used (2-stage heat/2-stage cool or
3-stage heat/2-stage cool).
HFC-410A packaged units built after May 2009 have ECM
controller version III (P/N 17B0034N01). This controller
includes logic and a relay to control the HWG functions.
Note: Power must be off to the unit for at least three
seconds before the ECM motor will recognize a speed
change. The motor will recognize a change in the CFM
Adjust or dehumidi¿cation mode settings while the unit
is powered.
There are four different airÀow settings from lowest airÀow
rate (speed tap 1) to the highest airÀow rate (speed tap 4).
The charts below indicate settings for both versions of the
ECM interface board, followed by detailed information for
each setting.
Cooling Settings: The cooling setting determines the cooling
(normal) CFM for all units with ECM motor. Cooling (normal)
setting is used when the unit is not in dehumidi¿cation mode.
Tap 1 is the lowest CFM setting, while tap 4 is the highest
CFM setting. To avoid air coil freeze-up, tap 1 may not
be used if the dehumidi¿cation mode is selected. Consult
submittal data or speci¿cations catalog for the speci¿c unit
series and model to correlate speed tap setting to airÀow in
CFM.
TEST setting runs the ECM motor at 70% torque, which
causes the motor to operate like a standard PSC motor, and
disables the CFM counter.
Dehumidi¿cation Mode Settings: The dehumidi¿cation mode
setting provides ¿eld selection of humidity control. When
operating in the normal mode, the cooling airÀow settings
are determined by the cooling tap setting above. When
dehumidi¿cation is enabled there is a reduction in airÀow
in cooling to increase the moisture removal of the heat
pump. Consult submittal data or speci¿cations catalog for
the speci¿c unit series and model to correlate speed tap to
airÀow in CFM. The dehumidi¿cation mode can be enabled in
two ways.
1.
2.
Constant Dehumidi¿cation Mode: When the
dehumidi¿cation mode is selected (via DIP switch or
jumper setting), the ECM motor will operate with a
multiplier applied to the cooling CFM settings (approx.
20-25% lower airÀow). Any time the unit is running in
the cooling mode, it will operate at the lower airÀow
to improve latent capacity. The “DEHUM” LED will be
illuminated at all times. Heating airÀow is not affected.
NOTE: Do not select dehumidi¿cation mode if cooling
setting is tap 1.
Automatic (Humidistat-controlled) Dehumidi¿cation
Mode: When the dehumidi¿cation mode is selected
(via DIP switch or jumper setting) AND a humidistat is
connected to terminal DH (version II) or HUM (version
I), the cooling airÀow will only be reduced when the
humidistat senses that additional dehumidi¿cation is
required. The DH (or HUM) terminal is reverse logic.
Therefore, a humidistat (not dehumidistat) is required.
The “DEHUM” LED will be illuminated only when
the humidistat is calling for dehumidi¿cation mode.
Heating airÀow is not affected. NOTE: Do not select
dehumidi¿cation mode if cooling setting is tap 1.
Heating Settings: The heating setting determines the heating
CFM for Tranquility 27® (TT) and Tranquility 20 (TS) units.
Tap 1 is the lowest CFM setting, while tap 4 is the highest
CFM setting. Consult submittal data or speci¿cations catalog
for the speci¿c unit series and model to correlate speed tap
setting to airÀow in CFM.
Auxiliary/Emergency Heat Settings: The auxiliary/emergency
heat setting determines the CFM when the unit is in auxiliary
heat or emergency heat mode. This setting is used for
residential units with internal electric heat. When auxiliary
electric heat is energized (i.e. compressor and electric heat),
the greater of the auxiliary/emergency or heating setting
will be used. A “G” (fan) signal must be present from the
thermostat for electric heat to operate. Consult the submittal
data or speci¿cations catalog for the speci¿c unit series and
model to correlate speed tap setting to airÀow in CFM.
CFM Adjust Settings: The CFM adjust setting allows four
selections. The NORM setting is the factory default position.
The + or – settings adjust the airÀow by +/- 15%. The +/settings are used to “¿ne tune” airÀow adjustments. The
24
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
ECM Blower Control
Table 5: ECM Board Tap Settings
Cooling settings: TT, TS Units
Tap
Setting
1
2
3
4
Version I
69243707
HP CFM
Jumper
1
2
3
4
Heating settings: TT, TS Units
Version II and III
(17B0019N01 & 17B0034N01)
DIP Switch
SW1
SW2
ON
ON
ON
OFF
OFF
ON
OFF
OFF
Tap
Setting
1
2
3
4
CFM Adjust settings: TT, TS Units
Version I
Version II and III
69243707 (17B0019N01 & 17B0034N01)
DIP Switch
Tap
CFM Adj
Setting
Jumper
SW7
SW8
TEST
1
ON
ON
2
ON
OFF
+
3
OFF
ON
NORM
4
OFF
OFF
Version I
69243707
DELAY
Jumper
1
2
3
4
Y2
O
W
G
G
R
Tap
Setting
1
2
3
4
Version I
69243707
AUX CFM
Jumper
1
2
3
4
Thermostat
Input LEDs
TB1
G
Thermostat
Connections
1/4" Spade
Connections
to CXM or
DXM Board
A
L
O
W1 EM C
Thermostat
Input LEDs
R
CFM Counter
1 flash per 100CF
LED's
CFM
J01
6
ECM Motor
Low Voltage
Connector
Norm
(+)
(–)
Test
4
3
2
1
CFM
Adjust
Aux
CFM
7 8 9 10
J1
Dehumidification
LED
4
3
2
1
4
3
2
Norm 1
1 2
HP
CFM
Delay
2 3
Dehumid
AL1
DEHUM
A
S1
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
SW9
OFF ON
G
Y1 Y2
TB01
ECM Motor
Low Voltage
Connector
1 2 3 4 5
CFM Counter
1 flash per 100 CFM
Y
Y2 Y1 G O W1 EM NC C R Hum
CFM
Y2 Y1 G O W C R DH AL1 A
Dehumidification
LED
DIP Switch
SW5
SW6
ON
ON
ON
OFF
OFF
ON
OFF
OFF
Figure 26b: ECM Version I Interface Layout
C
Thermostat
Connections
Version II and III
(17B0019N01 & 17B0034N01)
*Residential Units
A L
Y1
G
DIP Switch
SW3
SW4
ON
ON
ON
OFF
OFF
ON
OFF
OFF
A L
G
R
G
(17B0019N01 & 17B0034N01)
Dehum Mode settings: TT, TS Units
Version I
Version II and III
69243707 (17B0019N01 & 17B0034N01)
DIP Switch
Tap
Dehumid
SW9
Setting
Jumper
ON
NORM
pins 1,2
OFF
Dehumid
pins 2,3
Figure 26a: ECM Version II Interface Layout
1/4" Spade
Connections
to CXM or
DXM Board
Aux/Emerg Heat settings: TT, TS Units*
Version II and III
Fan Speed Selection DIP Switch
Fan Speed Selection Jumpers
Figure 26c: ECM Version III Interface Layout
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25
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Tranquility 27® (TT) Series ECM Blower Performance Data
Residential
Units Only
Airflow in CFM with wet coil and clean air filter
Model
026
038
049
064
072
Max
ESP
(in. wg)
Fan
Motor
(hp)
Tap
Setting
Cooling Mode
Dehumid Mode
Heating Mode
Fan
AUX
CFM
Aux/
Emerg
Mode
Stg 1
Stg 2
Fan
Stg 1
Stg 2
Fan
Stg 1
Stg 2
0.50
1/2
4
810
950
475
630
740
475
920
1060
475
4
1060
0.50
1/2
3
725
850
425
560
660
425
825
950
425
3
950
0.50
1/2
2
620
730
370
490
570
370
0.50
1/2
1
520
610
300
710
820
370
2
820
600
690
300
1
690
0.50
1/2
4
1120
1400
700
870
1090
700
1120
1400
700
4
1400
0.50
1/2
3
1000
1250
630
780
980
630
1000
1250
630
3
1350
0.50
1/2
2
860
1080
540
670
0.50
1/2
1
730
900
450
840
540
860
1080
540
2
1350
730
900
450
1
1350
0.75
1
4
1460
1730
870
1140
1350
870
1560
1850
870
4
1850
0.75
1
3
1300
1550
780
1020
1210
780
1400
1650
780
3
1660
0.75
1
2
1120
1330
670
870
0.75
1
1
940
1120
560
1040
670
1200
1430
670
2
1430
1010
1200
560
1
1350
0.75
1
4
1670
2050
1020
1300
1600
1020
1860
2280
1020
4
2280
0.75
1
3
1500
1825
920
1160
1430
920
1650
2050
920
3
2040
0.75
1
2
1280
1580
790
1000
0.75
1
1
1080
1320
660
1230
790
1430
1750
790
2
1750
1200
1470
660
1
1470
0.75
1
4
1620
2190
1050
1270
1650
1050
1690
2230
1050
4
2230
0.75
1
3
1500
1950
980
1170
1520
980
1600
2100
980
3
2100
0.75
1
2
1400
1830
910
1100
1420
910
1400
1850
910
2
1870
0.75
1
1
1320
1700
850
1240
1620
850
1
1670
During Auxiliary operation (residential units only) the CFM will run at the higher if the heating (delay jumper) or AUX settings
Airflow is controlled within +/- 5% up to Max ESP shown with wet coil and standard 1” fiberglass filter
Do not select Dehumidification mode if HP CFM is on setting 1
All units AHRI/ISO/ASHRAE 13256-1 rated HP (Cooling) Delay (Heating) CFM Setting 3
Note: See the ECM Blower Control section for information on setting taps.
26
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Tranquility 20™ (TS) Series PSC Blower Performance Data
Airflow in CFM with wet coil and clean air filter
Model
018
024
030
036
042
048
060
070
Airflow (cfm) at External Static Pressure (in. wg)
Fan
Speed
Rated
Airflow
Min
CFM
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0.60
0.70
HI
600
450
704
708
711
702
693
692
690
683
675
658
640
598
515
MED
600
450
602
601
599
590
581
583
585
579
573
560
547
492
LOW
600
450
531
529
527
522
517
512
506
501
495
479
462
HI
850
600
965
960
954
943
931
923
914
898
882
862
842
794
725
MED
850
600
841
833
825
817
809
800
790
777
763
747
731
686
623
LOW
850
600
723
715
707
703
698
689
680
668
656
642
627
HI
950
750
1271
1250
1229
1207
1185
1164
1143
1118
1093
1061
1029
953
875
MED
950
750
1048
1037
1025
1016
1007
994
981
962
943
915
886
822
LOW
950
750
890
887
884
879
874
865
855
842
829
809
789
HI
1250
900
1411
1407
1402
1390
1378
1370
1361
1326
1290
1248
1205
MED
1250
900
1171
1164
1156
1145
1133
1113
1092
1064
1035
997
958
LOW
1250
900
983
967
950
943
936
936
HI
1400
1050
1634
1626
1618
1606
1594
1583
1571
1539
1507
1464
1420
MED
1400
1050
1332
1323
1314
1298
1282
1263
1243
1206
1169
1115
1060
LOW
1400
1050
1130
1109
1088
1086
1084
1066
1048
1052
1055
HI
1600
1200
1798
1781
1764
1738
1711
1688
1665
1630
1595
1555
1514
MED
1600
1200
1384
1382
1379
1375
1371
1356
1341
1318
1294
1261
1227
LOW
1600
1200
1083
942
1265
1078
1420
1239
0.80
0.90
1.00
635
753
HI
1950
1500
2311
2306
2300
2290
2279
2268
2257
2233
2209
2175
2140
2088
1990
1901
1856
1752
MED
1950
1500
2058
2049
2039
2028
2016
2000
1983
1966
1949
1935
1920
1874
1807
1750
1670
1582
LOW
1950
1500
1868
1863
1858
1858
1858
1848
1838
1822
1806
1799
1792
1749
1699
1636
1570
HI
2100
1800
2510
2498
2486
2471
2455
2440
2424
2401
2377
2348
2318
2247
2161
2078
1986
MED
2100
1800
2171
2167
2162
2162
2162
2158
2153
2135
2117
2101
2085
2024
1971
1891
1823
LOW
2100
1800
2010
2008
2006
2006
2006
2006
2006
1992
1977
1962
1947
1892
1851
1855
Black areas denote ESP where operation is not recommended.
Units factory shipped on medium speed. Other speeds require field selection.
All airflow is rated and shown above at the lower voltage if unit is dual voltage rated, e.g. 208V for 208-230V units.
Note: See the ECM Blower Control section for information on setting taps.
c l i m a t e m a s t e r. c o m
27
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Tranquility 20™ (TS) Series ECM Blower Performance Data
Residential
Units Only
Airflow in CFM with wet coil and clean air filter
Model
018
024
030
036
042
048
060
070
Max
ESP
(in. wg)
0.50
0.50
0.50
0.50
0.50
0.75
0.75
0.75
Fan
Motor
(hp)
1/2
1/2
1/2
1/2
1/2
1
1
1
Cooling Mode
Dehumid Mode
Fan
AUX
CFM
Aux/
Emerg
Mode
750
380
4
750
570
700
350
3
700
310
510
620
310
2
650
430
530
270
1
650
740
470
870
1060
470
4
1060
540
660
420
780
950
420
3
950
490
600
360
670
820
390
2
820
570
690
340
1
690
560
720
880
560
1000
1230
560
4
1230
1000
500
640
780
500
900
1100
500
3
1100
740
900
450
580
700
450
800
980
450
2
980
1
660
800
400
700
850
400
1
850
4
1150
1400
700
900
1090
700
1150
1400
700
4
1400
3
1020
1250
630
800
980
630
1020
1250
630
3
1350
2
890
1080
540
690
840
540
890
1080
540
2
1350
1
740
900
450
750
920
450
1
1350
4
1290
1580
790
1010
1230
790
1290
1580
790
4
1580
3
1150
1400
700
900
1090
700
1150
1400
700
3
1400
2
1050
1280
640
820
1000
640
1020
1240
640
2
1350
1
920
1120
560
900
1080
560
1
1350
4
1420
1730
870
1110
1350
870
1520
1850
865
4
1850
3
1270
1550
780
990
1210
780
1350
1650
775
3
1650
2
1180
1440
720
920
1120
720
1190
1450
720
2
1450
1
1050
1280
640
1020
1250
640
1
1350
4
1680
2050
1030
1310
1600
1030
1870
2280
1030
4
2280
3
1500
1830
910
1170
1420
910
1680
2050
910
3
2050
2
1400
1700
850
1090
1330
850
1480
1800
850
2
1800
1
1300
1580
790
1270
1550
790
1
1550
4
1830
2230
1100
1420
1740
1100
1830
2230
1100
4
2230
3
1600
1950
980
1250
1520
980
1720
2100
980
3
2100
2
1440
1750
880
1120
1360
880
1670
1950
880
2
1950
1
1200
1580
790
1460
1780
790
1
1780
Stg 1
Stg 2
Fan
Stg 1
Stg 2
Fan
Stg 1
Stg 2
4
620
750
380
480
590
380
620
3
570
700
350
450
550
350
2
510
620
310
400
480
1
430
530
270
4
780
950
470
610
3
700
850
420
2
630
770
360
1
550
670
300
4
920
1130
3
820
2
Bold numbers indicate factory settings.
During Auxiliary operation the CFM will run at the higher of the Heating (Delay jumper) or AUX settings.
Airflow is controlled within 5% up to the Max ESP shown with wet coil.
Do not select Dehumidification mode if HP CFM is on setting 1.
All units AHRI/ISO/ASHRAE 13256-1 rated HP CFM Setting 3.
Note: See the ECM Blower Control section for information on setting taps.
28
Heating Mode
Tap
Setting
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
CXM Controls
CXM Control
For detailed control information, see CXM Application,
Operation and Maintenance (AOM) manual (part
#97B0003N12).
DDC operation. If set to “DDC Output at EH2,” the EH2
terminal will continuously output the last fault code of
the controller. If set to “EH2 normal,” EH2 will operate as
standard electric heat output.
Field Selectable Inputs
Test mode: Test mode allows the service technician to
check the operation of the control in a timely manner. By
momentarily shorting the test terminals, the CXM control
enters a 20 minute test mode period in which all time delays
are sped up 15 times. Upon entering test mode, the status
LED will flash a code representing the last fault. For diagnostic
ease at the thermostat, the alarm relay will also cycle during
test mode. The alarm relay will cycle on and off similar to the
status LED to indicate a code representing the last fault, at
the thermostat. Test mode can be exited by shorting the test
terminals for 3 seconds.
Retry Mode: If the control is attempting a retry of a fault,
the status LED will slow flash (slow flash = one flash every 2
seconds) to indicate the control is in the process of retrying.
NOTE: Some CXM controls only have a 2 position DIP switch
package. If this is the case, this option can be selected by
clipping the jumper which is in position 4
of SW1.
Field Configuration Options
Note: In the following field configuration options, jumper
wires should be clipped ONLY when power is removed from
the CXM control.
Water coil low temperature limit setting: Jumper 3 (JW3-FP1
Low Temp) provides field selection of temperature
limit setting for FP1 of 30°F or 10°F [-1°F or -12°C]
(refrigerant temperature).
Not Clipped = 30°F [-1°C]. Clipped = 10°F [-12°C].
Air coil low temperature limit setting: Jumper 2 (JW2-FP2
Low Temp) provides field selection of temperature limit
setting for FP2 of 30°F or 10°F [-1°F or -12°C] (refrigerant
temperature). Note: This jumper should only be clipped
under extenuating circumstances, as recommended by
the factory.
Not Clipped = 30°F [-1°C]. Clipped = 10°F [-12°C].
On = EH2 Normal. Off = DDC Output at EH2.
Jumper not clipped = EH2 Normal. Jumper clipped = DDC
Output at EH2.
DIP switch 5: Factory Setting - Normal position is “On.” Do
not change selection unless instructed to do so by
the factory.
Table 6a: CXM LED And Alarm Relay Operations
Description of Operation
LED
Alarm Relay
Normal Mode
Normal Mode with UPS Warning
CXM is non-functional
Fault Retry
Lockout
Over/Under Voltage Shutdown
On
On
Off
Slow Flash
Fast Flash
Slow Flash
Open
Cycle (closed 5 sec., Open 25 sec.)
Open
Open
Closed
Open (Closed after 15 minutes)
Test Mode - No fault in memory
Flashing Code 1
Cycling Code 1
Test Mode - HP Fault in memory Flashing Code 2
Cycling Code 2
Test Mode - LP Fault in memory
Flashing Code 3
Cycling Code 3
Test Mode - FP1 Fault in memory Flashing Code 4
Cycling Code 4
Test Mode - FP2 Fault in memory Flashing Code 5
Cycling Code 5
Test Mode - CO Fault in memory Flashing Code 6
Cycling Code 6
Test Mode - Over/Under
shutdown in memory
Flashing Code 7
Cycling Code 7
Test Mode - UPS in memory
Flashing Code 8
Cycling Code 8
-Flash
code
2 =Thermistor
2 quickFlashing
flashes,
10
pause,
Test Mode
- Swapped
Code
9 secondCycling
Code29quick
flashes, 10 second pause, etc.
-On pulse 1/3 second; off pulse 1/3 second
Alarm relay setting: Jumper 1 (JW1-AL2 Dry) provides field
selection of the alarm relay terminal AL2 to be jumpered to
24VAC or to be a dry contact (no connection).
Not Clipped = AL2 connected to R. Clipped = AL2 dry
contact (no connection).
DIP Switches
Note: In the following field configuration options, DIP
switches should only be changed when power is removed
from the CXM control.
DIP switch 1: Unit Performance Sentinel Disable - provides
field selection to disable the UPS feature.
Figure 27: Test Mode Pins
On = Enabled. Off = Disabled.
Short test pins
together to enter Test
Mode and speed-up
timing and delays for
20 minutes.
DIP switch 2: Stage 2 Selection - provides selection of
whether compressor has an “on” delay. If set to stage 2, the
compressor will have a 3 second delay before energizing.
Also, if set for stage 2, the alarm relay will NOT cycle during
test mode.
On = Stage 1. Off = Stage 2
DIP switch 3: Not Used.
DIP switch 4: DDC Output at EH2 - provides selection for
c l i m a t e m a s t e r. c o m
29
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
CXM Controls
Safety Features – CXM Control
The safety features below are provided to protect the
compressor, heat exchangers, wiring and other components
from damage caused by operation outside of design
conditions.
Anti-short cycle protection: The control features a 5 minute
anti-short cycle protection for the compressor.
Note: The 5 minute anti-short cycle also occurs at power up.
Random start: The control features a random start upon
power up of 5-80 seconds.
Fault Retry: In Fault Retry mode, the Status LED begins
slowly flashing to signal that the control is trying to recover
from a fault input. The control will stage off the outputs and
then “try again” to satisfy the thermostat input call. Once the
thermostat input call is satisfied, the control will continue on
as if no fault occurred. If 3 consecutive faults occur without
satisfying the thermostat input call, the control will go into
“lockout” mode. The last fault causing the lockout will be
stored in memory and can be viewed by going into test mode.
Note: FP1/FP2 faults are factory set at only one try.
Lockout: In lockout mode, the status LED will begin fast
flashing. The compressor relay is turned off immediately.
Lockout mode can be “soft” reset by turning off the
thermostat (or satisfying the call). A “soft” reset keeps
the fault in memory but resets the control. A “hard” reset
(disconnecting power to the control) resets the control and
erases fault memory.
Lockout with emergency heat: While in lockout mode, if W
becomes active (CXM), emergency heat mode will occur.
High pressure switch: When the high pressure switch opens due
to high refrigerant pressures, the compressor relay is de-energized
immediately since the high pressure switch is in series with the
compressor contactor coil. The high pressure fault recognition is
immediate (does not delay for 30 continuous seconds before deenergizing the compressor).
High pressure lockout code = 2
Example: 2 quick flashes, 10 sec pause, 2 quick flashes, 10
sec. pause, etc.
Low pressure switch: The low pressure switch must be open
and remain open for 30 continuous seconds during “on” cycle
to be recognized as a low pressure fault. If the low pressure
switch is open for 30 seconds prior to compressor power up it
will be considered a low pressure (loss of charge) fault. The low
pressure switch input is bypassed for the initial 60 seconds of a
compressor run cycle.
Low pressure lockout code = 3
Water coil low temperature (FP1): The FP1 thermistor
temperature must be below the selected low temperature limit
setting for 30 continuous seconds during a compressor run
cycle to be recognized as a FP1 fault. The FP1 input is bypassed
for the initial 120 seconds of a compressor run cycle. FP1 is
set at the factory for one try. Therefore, the control will go into
lockout mode once the FP1 fault has occurred.
Air coil low temperature (FP2): The FP2 thermistor temperature
must be below the selected low temperature limit setting for
30 continuous seconds during a compressor run cycle to be
recognized as a FP2 fault. The FP2 input is bypassed for the
initial 120 seconds of a compressor run cycle. FP2 is set at the
factory for one try. Therefore, the control will go into lockout
mode once the FP2 fault has occurred.
FP2 lockout code = 5
Condensate overflow: The condensate overflow sensor
must sense overflow level for 30 continuous seconds to
be recognized as a CO fault. Condensate overflow will be
monitored at all times.
CO lockout code = 6
Over/under voltage shutdown: An over/under voltage
condition exists when the control voltage is outside the range
of 18VAC to 31.5VAC. Over/under voltage shut down is a
self-resetting safety. If the voltage comes back within range
for at least 0.5 seconds, normal operation is restored. This is
not considered a fault or lockout. If the CXM is in over/under
voltage shutdown for 15 minutes, the alarm relay will close.
Over/under voltage shut down code = 7
Unit Performance Sentinel-UPS (patent pending): The UPS
feature indicates when the heat pump is operating inefficiently.
A UPS condition exists when:
a) In heating mode with compressor energized, FP2 is
greater than 125°F [52°C] for 30 continuous seconds, or:
b) In cooling mode with compressor energized, FP1 is
greater than 125°F [52°C] for 30 continuous seconds, or:
c) In cooling mode with compressor energized, FP2 is less
than 40°F [4.5°C] for 30 continuous seconds. If a UPS
condition occurs, the control will immediately go to UPS
warning. The status LED will remain on as if the control
is in normal mode. Outputs of the control, excluding LED
and alarm relay, will NOT be affected by UPS. The UPS
condition cannot occur during a compressor off cycle.
During UPS warning, the alarm relay will cycle on and
off. The cycle rate will be “on” for 5 seconds, “off” for 25
seconds, “on” for 5 seconds, “off” for 25 seconds, etc.
UPS warning code = 8
Swapped FP1/FP2 thermistors: During test mode, the control
monitors to see if the FP1 and FP2 thermistors are in the
appropriate places. If the control is in test mode, the control
will lockout, with code 9, after 30 seconds if:
a) The compressor is on in the cooling mode and the FP1
sensor is colder than the FP2 sensor, or:
b) The compressor is on in the heating mode and the FP2
sensor is colder than the FP1 sensor.
Swapped FP1/FP2 thermistor code = 9.
Diagnostic Features
The LED on the CXM board advises the technician of the
current status of the CXM control. The LED can display either
the current CXM mode or the last fault in memory if in test
mode. If there is no fault in memory, the LED will flash Code 1
(when in test mode).
FP1 lockout code = 4
30
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
CXM Controls
CXM Control Start-up Operation
The control will not operate until all inputs and safety controls
are checked for normal conditions. The compressor will
have a 5 minute anti-short cycle delay at power-up. The first
time after power-up that there is a call for compressor, the
compressor will follow a 5 to 80 second random start delay.
After the random start delay and anti-short cycle delay,
the compressor relay will be energized. On all subsequent
compressor calls, the random start delay is omitted.
Table 6b: Unit Operation
T-stat signal
G
1
2
3
4
5
6
TT
TS
TS
ECM fan
ECM fan
PSC fan
Fan only
Fan only
Fan only
1
3
Stage 1 heating
Stage 1 heating
1
Stage 2 heating
1
5
3
Stage 2 heating
3
G, Y or Y1
Stage 1 heating
G, Y1, Y2
Stage 2 heating
G, Y1, Y2, W
Stage 3 heating
Stage 3 heating
N/A
G, W
Emergency heat
Emergency heat
Emergency heat
2
4
Stage 1 cooling
Cooling
2
Stage 2 cooling
4
N/A
G, Y or Y1, O
Stage 1 cooling
G, Y1, Y2, O
Stage 2 cooling
5
6
Stage 1 = 1st stage compressor, 1st stage fan operation
Stage 2 = 2nd stage compressor, 2nd stage fan operation
Stage 3 = 2nd stage compressor, auxiliary electric heat, 2nd
or 3rd stage fan operation (depending on fan settings)
Stage 1 = 1st stage compressor, 1st stage fan operation, reversing valve
Stage 2 = 2nd stage compressor, 2nd stage fan operation, reversing valve
Stage 1 = compressor, 1st stage fan operation
Stage 2 = compressor, 2nd stage fan operation
Stage 3 = compressor, auxiliary electric heat, 2nd or 3rd stage fan operation (depending on fan settings)
Stage 1 = compressor, 1st stage fan operation, reversing valve
Stage 2 = compressor, 2nd stage fan operation, reversing valve
Stage 1 = compressor, fan
Stage 2 = compressor, auxiliary electric heat, fan
Cooling = compressor, fan, reversing valve
c l i m a t e m a s t e r. c o m
31
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
CXM Controls
Safety Features – CXM Control
Table 7: Nominal resistance at various temperatures
Temp
(°C)
Temp
(°F)
Resistance
(kOhm)
Temp
(°C)
Temp
(°F)
Resistance
(kOhm)
CXM Thermostat Details
Thermostat Compatibility - Most all heat pump thermostats
can be used with the CXM control. However Heat/Cool
stats are NOT compatible with the CXM.
Anticipation Leakage Current - Maximum leakage current
for "Y" is 50 mA and for "W" is 20mA. Triacs can be used
if leakage current is less than above. Thermostats with
anticipators can be used if anticipation current is less than
that specified above.
Thermostat Signals • "Y" and "W" have a 1 second recognition time when
being activated or being removed.
• "O" and "G" are direct pass through signals but are
monitored by the micro processor.
• "R" and "C" are from the transformer.
• "AL1" and "AL2" originate from the alarm relay.
• "A" is paralleled with the compressor output for use
with well water solenoid valves.
• The "Y" 1/4" quick connect is a connection point to the
"Y" input terminal P1 for factory use. This "Y" terminal
can be used to drive panel mounted relays such as the
loop pump relay.
32
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Unit Commissioning And Operating Conditions
Operating Limits
Environment – Units are designed for indoor installation only. Never install units in areas subject to freezing or where humidity levels
could cause cabinet condensation (such as unconditioned spaces subject to 100% outside air).
Power Supply – A voltage variation of +/– 10% of nameplate utilization voltage is acceptable.
Determination of operating limits is dependent primarily upon three factors: 1) return air temperature. 2) water temperature,
and 3) ambient temperature. When any one of these factors is at minimum or maximum levels, the other two factors should be
at normal levels to insure proper unit operation. Extreme variations in temperature and humidity and/or corrosive water or air
will adversely affect unit performance, reliability, and service life. Consult Table 8a for operating limits.
Table 8a: Building Operating Limits
Operating Limits
Air Limits
Min. ambient air, DB
Rated ambient air, DB
Max. ambient air, DB
Min. entering air, DB/WB
Rated entering air, DB/WB
Max. entering air, DB/WB
Water Limits
Min. entering water
Normal entering water
Max. entering water
Normal Water Flow
TT
TS
Cooling
Heating
Cooling
Heating
45ºF [7ºC]
80.6ºF [27ºC]
130ºF [54ºC]
60/45ºF [16/7ºC]
80.6/66.2ºF [27/19ºC]
100/75ºF [38/24ºC]
39ºF [4ºC]
68ºF [20ºC]
85ºF [29ºC]
40ºF [4.4ºC]
68ºF [20ºC]
80ºF [27ºC]
45ºF [7ºC]
80.6ºF [27ºC]
130ºF [54ºC]
60/50ºF [16/10ºC]
80.6/66.2ºF [27/19ºC]
95/75ºF [35/24ºC]
39ºF [4ºC
68ºF [20ºC
85ºF [29ºC]
45ºF [7ºC]
68ºF [20ºC
80ºF [27ºC]
30ºF [-1ºC]
20ºF [-6.7ºC]
50-110ºF [10-43ºC]
30-70ºF [-1 to 21ºC]
120ºF [49ºC]
90ºF [32ºC]
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
30ºF [-1ºC]
20ºF [-6.7ºC]
50-110ºF [10-43ºC]
30-70ºF [-1 to 21ºC]
120ºF [49ºC]
90ºF [32ºC]
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
Rev.: 7 Sept., 2012B
Commissioning Conditions
Consult Table 8b for the particular model. Starting conditions vary depending upon model and are based upon the following
notes:
Notes:
1. Conditions in Table 8b are not normal or continuous operating conditions. Minimum/maximum limits are start-up conditions
to bring the building space up to occupancy temperatures. Units are not designed to operate under these conditions on a
regular basis.
2. Voltage utilization range complies with AHRI Standard 110.
Table 8b: Building Commissioning Limits
Commissioning Limits
Air Limits
Min. ambient air, DB
Rated ambient air, DB
Max. ambient air, DB
Min. entering air, DB/WB
Rated entering air, DB/WB
Max. entering air, DB/WB
Water Limits
Min. entering water
Normal entering water
Max. entering water
TT/TS
Cooling
Heating
45ºF [7ºC]
80.6ºF [27ºC]
130ºF [54ºC]
*50ºF [10ºC]
80.6/66.2ºF [27/19ºC]
110/83ºF [43/28ºC]
39ºF [4ºC]
68ºF [20ºC]
85ºF [29ºC]
40ºF [4.5ºC]
68ºF [20ºC]
80ºF [27ºC]
30ºF [-1ºC]
20ºF [-6.7ºC]
50-110ºF [10-43ºC]
30-70ºF [-1 to 21ºC]
120ºF [49ºC]
90ºF [32ºC]
1.5 to 3.0 gpm / ton
Normal Water Flow
[1.6 to 3.2 l/m per kW]
,IZLWKDFWLYH&OLPD'U\Œʞʝ
Rev.: 7 Sept., 2012B
c l i m a t e m a s t e r. c o m
33
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Unit Start-Up and Operating Conditions
Unit and System Checkout
BEFORE POWERING SYSTEM, please check the following:
UNIT CHECKOUT
Balancing/shutoff valves: Insure that all isolation valves
are open and water control valves are wired.
Line voltage and wiring: Verify that voltage is within
an acceptable range for the unit and wiring and fuses/
breakers are properly sized. Verify that low voltage wiring
is complete.
Unit control transformer: Insure that transformer has the
properly selected voltage tap. Residential 208-230V units
are factory wired for 230V operation unless specified
otherwise.
Loop/water piping is complete and purged of air. Water/
piping is clean.
Antifreeze has been added if necessary.
Entering water and air: Insure that entering water and air
temperatures are within operating limits of Table 8.
Low water temperature cutout: Verify that low water
temperature cut-out on the CXM/CXM control is properly
set.
Unit fan: Manually rotate fan to verify free rotation and
insure that blower wheel is secured to the motor shaft.
Be sure to remove any shipping supports if needed.
DO NOT oil motors upon start-up. Fan motors are preoiled at the factory. Check unit fan speed selection and
compare to design requirements.
Condensate line: Verify that condensate line is open and
properly pitched toward drain.
HWG pump is disconnected unless piping is completed
and air has been purged from the system.
Water flow balancing: Record inlet and outlet water
temperatures for each heat pump upon startup. This
check can eliminate nuisance trip outs and high velocity
water flow that could erode heat exchangers.
Unit air coil and filters: Insure that filter is clean and
accessible. Clean air coil of all manufacturing oils.
Unit controls: Verify that CXM field selection options are
properly set. Low voltage wiring is complete.
Blower speed is set.
Service/access panels are in place.
SYSTEM CHECKOUT
System water temperature: Check water temperature
for proper range and also verify heating and cooling set
points for proper operation.
System pH: Check and adjust water pH if necessary to
maintain a level between 6 and 8.5. Proper pH promotes
longevity of hoses and fittings (see Table 3).
System flushing: Verify that all air is purged from the
system. Air in the system can cause poor operation or
system corrosion. Water used in the system must be
potable quality initially and clean of dirt, piping slag,
and strong chemical cleaning agents. Some antifreeze
solutions may require distilled water.
Flow Controller pump(s): Verify that the pump(s) is wired,
purged of air, and in operating condition.
System controls: Verify that system controls function and
34
operate in the proper sequence.
Low water temperature cutout: Verify that low water
temperature cut-out controls are set properly
(FP1 - JW3).
Miscellaneous: Note any questionable aspects of
the installation.
CAUTION!
CAUTION! Verify that ALL water control valves are open
and allow water flow prior to engaging the compressor.
Freezing of the coax or water lines can permanently
damage the heat pump.
CAUTION!
CAUTION! To avoid equipment damage, DO NOT
leave system filled in a building without heat during the
winter unless antifreeze is added to the water loop. Heat
exchangers never fully drain by themselves and will
freeze unless winterized with antifreeze.
Unit Start-up Procedure
1. Turn the thermostat fan position to “ON.” Blower
should start.
2. Balance air flow at registers.
3. Adjust all valves to their full open position. Turn on the
line power to all heat pump units.
4. Room temperature should be within the minimummaximum ranges of Table 8b. During start-up checks,
loop water temperature entering the heat pump should
be between 30°F [-1°C] and 95°F [35°C].
5. Two factors determine the operating limits of water
source heat pumps, (a) return air temperature, and (b)
water temperature. When any one of these factors is at a
minimum or maximum level, the other factor must be at
normal level to insure proper unit operation.
a. Adjust the unit thermostat to the warmest setting.
Place the thermostat mode switch in the “COOL”
position. Slowly reduce thermostat setting until the
compressor activates.
b. Check for cool air delivery at the unit grille within a
few minutes after the unit has begun to operate.
Note: Units have a five minute time delay in the
control circuit that can be bypassed on the CXM/
CXM control board as shown below in Figure 27. See
controls description for details.
c. Verify that the compressor is on and that the water
flow rate is correct by measuring pressure drop
through the heat exchanger using the P/T plugs and
comparing to Tables 9a through 9b.
d. Check the elevation and cleanliness of the
condensate lines. Dripping may be a sign of a
blocked line. Check that the condensate trap is filled
to provide a water seal.
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Unit Start-Up Procedure
6.
7.
8.
9.
e. Refer to Table 10. Check the temperature of both
entering and leaving water. If temperature is within
range, proceed with the test. If temperature is outside
of the operating range, check refrigerant pressures
and compare to Tables 11 through 12. Verify correct
water flow by comparing unit pressure drop across
the heat exchanger versus the data in Tables 9a
through 9b. Heat of rejection (HR) can be calculated
and compared to catalog data capacity pages. The
formula for HR for systems with water is as follows:
HR = TD x GPM x 500, where TD is the temperature
difference between the entering and leaving water,
and GPM is the flow rate in U.S. GPM, determined
by comparing the pressure drop across the heat
exchanger to Tables 9a through 9b.
f. Check air temperature drop across the air coil when
compressor is operating. Air temperature drop should
be between 15°F and 25°F [8°C and 14°C].
g. Turn thermostat to “OFF” position. A hissing noise
indicates proper functioning of the reversing valve.
Allow five (5) minutes between tests for pressure to
equalize before beginning heating test.
a. Adjust the thermostat to the lowest setting. Place the
thermostat mode switch in the “HEAT” position.
b. Slowly raise the thermostat to a higher temperature
until the compressor activates.
c. Check for warm air delivery within a few minutes after
the unit has begun to operate.
d. Refer to Table 10. Check the temperature of both
entering and leaving water. If temperature is within
range, proceed with the test. If temperature is outside
of the operating range, check refrigerant pressures
and compare to Tables 11 through 12. Verify correct
water flow by comparing unit pressure drop across
the heat exchanger versus the data in Tables 9a
through 9b. Heat of extraction (HE) can be calculated
and compared to submittal data capacity pages. The
formula for HE for systems with water is as follows:
HE = TD x GPM x 500, where TD is the temperature
difference between the entering and leaving water,
and GPM is the flow rate in U.S. GPM, determined
by comparing the pressure drop across the heat
exchanger to Tables 9a through 9b.
e. Check air temperature rise across the air coil when
compressor is operating. Air temperature rise should
be between 20°F and 30°F [11°C and 17°C].
f. Check for vibration, noise, and water leaks.
If unit fails to operate, perform troubleshooting analysis
(see troubleshooting section). If the check described
fails to reveal the problem and the unit still does not
operate, contact a trained service technician to insure
proper diagnosis and repair of the equipment.
When testing is complete, set system to maintain
desired comfort level.
BE CERTAIN TO FILL OUT AND RETURN ALL
WARRANTY REGISTRATION PAPERWORK.
manual. To obtain maximum performance, the air coil should
be cleaned before start-up. A 10% solution of dishwasher
detergent and water is recommended.
WARNING!
WARNING! When the disconnect switch is closed, high
voltage is present in some areas of the electrical panel.
Exercise caution when working with energized equipment.
CAUTION!
CAUTION! Verify that ALL water control valves are open
and allow water flow prior to engaging the compressor.
Freezing of the coax or water lines can permanently
damage the heat pump.
Note: If performance during any mode appears abnormal,
refer to the CXM section or troubleshooting section of this
c l i m a t e m a s t e r. c o m
35
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Unit Operating Conditions
Table 9a: TT Coax Water Pressure Drop
Model
GPM
4.0
6.0
7.0
8.0
026
Table 9b: TS Coax Water Pressure Drop
Pressure Drop (psi)
30°F
1.5
3.1
4.1
5.1
50°F
1.3
2.6
3.4
4.3
70°F
90°F
1.1
2.3
3.0
3.8
1.0
2.1
2.7
3.4
Model
GPM
Pressure Drop (psi)
30°F
50°F
70°F
90°F
018
2.8
4.1
5.5
0.7
2.1
3.5
0.5
1.7
2.8
0.3
1.4
2.4
0.2
1.1
2.0
024
4.0
6.0
8.0
1.5
3.1
5.1
1.3
2.6
4.3
1.1
2.3
3.8
1.0
2.1
3.4
030
4.0
6.0
8.0
1.5
3.1
5.1
1.3
2.6
4.3
1.1
2.3
3.8
1.0
2.1
3.4
036
4.5
6.8
9.0
1.7
3.3
5.7
1.3
3.1
5.2
1.1
2.9
4.8
0.9
2.6
4.4
042
5.5
8.3
11.0
1.1
2.2
3.9
0.9
2.1
3.6
0.8
2.0
3.2
0.7
1.8
3.1
4.0
6.0
8.0
9.0
1.2
2.6
4.5
5.7
1.0
2.5
4.2
5.2
0.8
2.3
4.0
4.8
0.6
2.1
3.7
4.4
049
5.5
8.3
11.0
12.0
1.1
2.2
3.9
4.5
0.9
2.1
3.6
4.2
0.8
2.0
3.2
3.8
0.7
1.8
3.1
3.5
064
7.0
10.5
14.0
15.0
0.5
1.9
3.9
4.8
0.3
1.8
3.5
4.3
0.2
1.7
3.2
3.9
0.1
1.6
2.9
3.5
1.7
3.9
6.9
8.9
1.5
3.4
6.0
7.7
1.3
3.0
5.4
6.9
1.3
2.8
5.0
6.5
048
072
7.5
11.3
15.0
17.0
6.0
9.0
12.0
1.3
2.6
4.5
1.1
2.5
4.2
1.0
2.3
3.8
0.9
2.2
3.5
060
7.5
11.3
15.0
0.6
2.3
4.8
0.4
2.1
4.3
0.3
2.0
3.9
0.2
1.8
3.5
Table 10: Water Temperature Change Through Heat
Exchanger
070
8.3
12.4
16.5
2.4
5.2
8.0
2.0
4.5
7.0
1.7
4.0
6.3
1.6
3.8
6.0
038
Antifreeze Correction Table
Antifreeze Type
Water
Propylene Glycol
Methanol
Ethanol
Ethylene Glycol
36
Antifreeze
%
Cooling
Heating
EWT 90°F
EWT 30°F
WPD
Corr. Fct.
EWT 30°F
Total Cap
Sens Cap
Power
Htg Cap
Power
0
1.000
1.000
1.000
1.000
1.000
5
0.995
0.995
1.003
0.989
0.997
1.070
15
0.986
0.986
1.009
0.968
0.990
1.210
25
0.978
0.978
1.014
0.947
0.983
1.360
5
0.997
0.997
1.002
0.989
0.997
1.070
15
0.990
0.990
1.007
0.968
0.990
1.160
25
0.982
0.982
1.012
0.949
0.984
1.220
5
0.998
0.998
1.002
0.981
0.994
1.140
15
0.994
0.994
1.005
0.944
0.983
1.300
25
0.986
0.986
1.009
0.917
0.974
1.360
5
0.998
0.998
1.002
0.993
0.998
1.040
15
0.994
0.994
1.004
0.980
0.994
1.120
25
0.988
0.988
1.008
0.966
0.990
1.200
Geothermal Heat Pump Systems
1.000
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Unit Operating Conditions
Table 11: TT Series Typical Unit Operating Pressures and Temperatures
TT026
Entering
Water
Suction
Water
Flow
Pressure
Temp
GPM/ton
PSIG
°F
Full Load Cooling - without HWG active
Water
Temp
Superheat Subcooling
Rise
°F
Discharge
Pressure
PSIG
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Full Load Heating - without HWG active
Water
Temp
Drop
°F
Discharge
Pressure Superheat Subcooling
PSIG
Air
Temp
Rise °F
DB
30*
1.5
2.25
3
118-128
118-128
118-128
159-179
146-166
132-152
25-30
25-30
25-30
9-14
7-12
7-12
16.7-18.7
12.3-14.3
7.9-9.9
19-25
20-26
20-26
72-83
75-85
78-88
273-293
275-295
277-297
6-11
6-11
6-11
3-8
3-8
3-8
5.9-7.9
4.2-6.2
2.7-4.7
16-22
17-23
18-24
50
1.5
2.25
3
128-138
128-138
128-138
186-206
172-192
158-178
18-23
18-23
18-23
8-13
6-11
6-11
16.3-18.3
12.1-14.1
7.8-9.8
19-25
20-26
20-26
102-112
106-116
110-120
302-322
303-323
305-325
8-12
8-12
8-12
6-11
6-11
6-11
8.9-10.9
6.7-8.7
4.5-6.5
22-28
23-29
23-29
70
1.5
2.25
3
136-146
136-146
136-146
281-301
267-287
253-273
7-12
7-12
7-12
7-12
5-10
4-9
15.7-17.7
11.6-13.6
7.6-9.6
19-25
19-25
19-25
128-138
134-144
141-151
330-350
332-352
334-354
10-15
10-15
10-15
8-13
8-13
8-13
11.3-13.3
8.5-10.5
5.8-7.8
27-34
28-35
28-35
90
1.5
2.25
3
139-149
139-149
139-149
368-388
354-374
340-360
6-11
6-11
6-11
7-12
5-10
5-10
14.9-16.9
11-13
7.2-9.2
18-24
18-24
18-24
162-172
166-176
171-181
367-387
372-392
377-397
14-19
15-20
17-22
10-15
10-15
10-15
14.4-16.4
10.8-12.8
7.1-9.1
33-41
34-42
34-42
110
1.5
2.25
3
143-153
143-153
143-153
465-485
450-470
433-453
6-11
6-11
6-11
7-12
5-10
5-10
13.9-15.9
10.2-12.2
6.5-8.5
17-23
17-23
17-23
*Based on 15% Methanol antifreeze solution
TT038
Full Load Cooling - without HWG active
Entering
Water
Temp
°F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
30*
1.5
2.25
3
120-130
119-129
119-129
156-176
148-168
138-158
50
1.5
2.25
3
129-139
128-138
128-138
70
1.5
2.25
3
90
110
Full Load Heating - without HWG active
Subcooling
Water
Temp
Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
Subcooling
Water
Temp
Drop
°F
Air
Temp
Rise °F
DB
25-30
25-30
25-30
9-14
8-13
8-13
22.1-24.1
16.8-18.8
10.5-12.5
18-24
19-25
19-25
69-79
73-83
76-86
293-313
297-317
300-320
7-12
7-12
7-12
14-19
14-19
14-19
8.9-10.9
6.7-8.7
4.5-6.5
17-23
18-24
19-25
225-245
211-231
197-217
15-20
15-20
15-20
10-15
9-14
9-14
21.9-23.9
16.1-18.1
10.3-12.3
18-24
19-25
19-25
96-106
100-110
105-115
322-342
326-346
331-351
10-15
10-15
10-15
17-22
17-22
17-22
12.2-14.2
9.3-11.3
6.4-8.4
23-29
24-30
24-30
136-146
135-145
135-145
302-322
283-303
265-285
9-14
9-14
9-14
13-18
12-17
12-17
21.5-23.5
15.8-17.8
10-12
18-24
19-25
19-25
123-133
129-139
135-145
352-372
358-378
364-384
11-16
11-16
11-16
19-24
19-24
19-24
15-17
11.6-13.6
8.2-10.2
28-35
29-36
30-37
1.5
2.25
3
140-150
140-150
140-150
390-410
369-389
349-369
7-12
8-13
8-13
13-18
8-13
8-13
20.5-22.5
14.9-16.9
9.3-11.3
17-23
17-23
17-23
157-167
169-179
181-191
390-410
399-419
408-428
13-18
13-18
14-19
18-23
16.5-21.5
15-20
21-23
15.5-17.5
10.5-12.5
36-44
37-45
39-47
1.5
2.25
3
145-155
145-155
145-155
488-508
467-487
447-467
7-12
8-13
8-13
13-18
8-13
8-13
19-21
14-16
9-11
17-23
17-23
17-23
*Based on 15% Methanol antifreeze solution
TT049
Full Load Cooling - without HWG active
Entering
Water
Temp
°F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
30*
1.5
2.25
3
112-122
111-121
111-121
187-207
167-187
147-167
50
1.5
2.25
3
125-135
123-133
122-132
70
1.5
2.25
3
90
110
Full Load Heating - without HWG active
Subcooling
Water
Temp
Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
Subcooling
Water
Temp
Drop
°F
Air
Temp
Rise °F
DB
22-27
22-27
23-28
14-19
12-17
11-16
20.7-22.7
15.5-17.5
10.2-12.2
18-24
18-24
18-24
66-76
69-79
72-82
286-306
289-309
292-312
7-12
7-12
7-12
8-13
9-14
9-14
8-10
6-8
4-6
18-24
19-25
19-25
242-262
224-244
205-225
13-18
13-18
14-19
10-15
9-14
7-12
20.9-22.9
15.6-17.6
10.2-12.2
19-25
19-25
19-25
93-103
98-108
103-113
314-334
320-340
326-346
8-13
8-13
8-13
10-15
10-15
10-15
11.5-13.5
8.7-10.7
5.9-7.9
23-29
24-30
25-31
133-143
132-142
131-141
310-330
290-310
270-290
8-13
8-13
9-14
8-13
7-12
5-10
20.5-22.5
15.2-17.2
9.9-11.9
19-25
19-25
19-25
123-133
130-140
137-147
344-364
354-374
361-381
9-14
9-14
9-14
9-14
9-14
9-14
15-17
11.5-13.5
7.9-9.9
28-35
29-36
30-37
1.5
2.25
3
138-148
137-147
136-146
396-416
374-394
352-372
7-12
7-12
7-12
7-12
6-11
4-9
19.2-21.2
14.3-16.3
9.3-11.3
18-24
18-24
18-24
165-175
175-185
185-195
390-410
401-421
413-433
13-18
15-20
17-22
8-13
8-13
8-13
19.6-21.6
15-17
10.3-12.3
37-45
38-46
39-47
1.5
2.25
3
144-154
143-153
142-152
497-517
472-492
447-467
7-12
7-12
7-12
5-10
4-9
3-8
18-20
13.3-15.3
8.5-10.5
17-23
17-23
17-23
Discharge
Pressure Superheat
PSIG
*Based on 15% Methanol antifreeze solution
c l i m a t e m a s t e r. c o m
37
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Unit Operating Conditions
Table 11: TT Series Typical Unit Operating Pressures and Temperatures: Continued
TT064
Entering
Water
Water
Flow
Temp
GPM/ton
°F
Suction
Pressure
PSIG
Full Load Cooling - without HWG active
Water
Discharge
Temp
Pressure Superheat Subcooling
Rise
PSIG
°F
Air Temp
Drop °F
DB
Full Load Heating - without HWG active
Water
Suction Discharge
Temp
Pressure Pressure Superheat Subcooling
Drop
PSIG
PSIG
°F
Air
Temp
Rise °F
DB
30*
1.5
2.25
3
117-127
116-126
115-125
170-190
143-163
135-155
27-32
28-33
29-34
15-20
13-18
12-17
18.2-20.2
12.6-14.6
7-9
17-23
17-23
17-23
66-76
69-79
72-82
282-302
285-305
289-309
10-16
10-16
10-16
9-14
9-14
10-15
8-10
6-8
4-6
19-25
19-25
20-26
50
1.5
2.25
3
128-138
126-136
125-135
238-258
222-242
205-225
16-21
21-26
26-31
14-19
13-18
12-17
20.5-22.5
14.9-16.9
9.2-11.2
21-27
21-27
21-27
90-100
95-105
99-109
310-330
313-333
316-336
11-17
11-17
11-17
12-17
12-17
12-17
11.3-13.3
8.5-10.5
5.7-7.7
24-30
25-31
26-32
70
1.5
2.25
3
135-145
134-144
133-143
315-335
296-316
276-296
10-15
12-17
15-20
14-19
13-18
11-16
21-23
15.5-17.5
10-12
22-28
22-28
22-28
115-125
120-130
126-136
337-357
341-361
345-365
12-18
12-18
12-18
14-19
14-19
15-20
14-16
10.6-12.6
7.3-9.3
28-35
29-36
30-37
90
1.5
2.25
3
139-149
138-148
138-148
408-428
386-406
364-384
10-15
10-15
10-15
15-20
13-18
11-16
20.1-22.1
14.8-16.8
9.5-11.5
21-27
21-27
21-27
157-167
161-171
166-176
390-410
394-414
398-418
15-20
15-20
15-20
14-19
14-19
15-20
18.2-20.2
13.9-15.9
9.6-11.6
37-45
38-46
39-47
110
1.5
2.25
3
144-154
143-153
142-152
515-535
493-513
469-489
8-13
8-13
8-13
14-19
13-18
12-17
19-21
14-16
9-11
20-26
20-26
20-26
*Based on 15% Methanol antifreeze solution
TT072
Full Load Cooling - without HWG active
Entering Water
Water
Flow
Temp
GPM/
°F
ton
Suction Discharge
Pressure Pressure Superheat Subcooling
PSIG
PSIG
Full Load Heating - without HWG active
Water
Temp
Rise
°F
Air
Suction Discharge
Temp
Pressure Pressure Superheat Subcooling
Drop °F
PSIG
PSIG
DB
Water
Temp
Drop
°F
Air
Temp
Rise
°F DB
30*
1.5
2.25
3
119-129
117-127
115-125
155-175
150-170
144-164
25-30
25-30
28-32
17-22
17-22
17-22
18-20
13.2-15.2
8.4-9.4
21-27
21-27
22-28
61-71
65-75
68-78
292-312
296-316
300-320
11-16
11-16
10-15
13-18
14-19
15-20
7.2-9.2
5.4-7.4
3.5-5.5
19-25
20-26
21-27
50
1.5
2.25
3
131-141
130-140
129-139
210-230
205-225
200-220
10-15
11-16
13-18
12-17
12-17
12-17
18.5-20.5
14-16
9.5-11.5
22-28
23-29
24-30
89-99
98-108
106-116
327-347
337-357
348-368
10-15
10-15
10-15
19-24
14-19
9-14
10.9-12.9
8.3-10.3
5.7-7.7
26-32
28-34
30-36
70
1.5
2.25
3
135-145
131-141
128-138
300-320
295-315
290-310
10-15
11-16
13-18
15-20
14-19
14-19
17.6-19.6
13.8-15.8
10-12
23-29
23-29
23-29
119-129
132-142
144-154
365-385
380-400
395-415
10-15
10-15
10-15
21-26
16-21
11-16
14.7-16.7
11.3-13.3
7.9-9.9
33-39
36-42
38-44
90
1.5
2.25
3
139-149
137-147
135-145
390-410
370-390
350-370
10-15
10-15
10-15
16-21
14-19
13-18
16.7-18.7
12.6-14.6
8.5-10.5
22-28
22-28
22-28
162-172
172-182
182-192
418-438
430-450
444-464
10-15
10-15
11-16
19-24
19-24
19-24
19.4-21.4
14.7-16.7
10.1-12.1
43-49
45-51
47-53
110
1.5
2.25
3
145-155
145-155
144-154
490-510
470-490
452-472
10-15
10-15
9-14
16-21
14-19
13-18
15.9-17.9
11.7-13.7
7.4-9
20-27
20-27
20-27
*Based on 15% Methanol antifreeze solution
Table 12: TS Series Typical Unit Operating Pressures and Temperatures
018
Full Load Cooling - without HWG active
Entering
Water
Temp °F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
30*
1.5
2.25
3
120-130
120-130
120-130
155-175
142-162
128-148
50
1.5
2.25
3
137-147
137-147
137-147
70
1.5
2.25
3
90
110
Full Load Heating - without HWG active
Subcooling
Water
Temp Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
Subcooling
Water
Temp Drop
°F
Air Temp
Rise °F DB
27-32
27-32
27-32
11-16
9-14
9-14
16.9-19.9
12.5-14.5
8.1-10.1
16-22
17-23
17-23
73-83
75-85
78-88
268-288
270-290
272-292
8-13
8-13
8-13
4-9
4-9
4-9
6.1-8.1
4.4-6.4
2.9-4.9
15-21
16-22
16-22
220-240
206-226
192-212
16-21
16-21
16-21
10-15
8-13
8-13
17-19
12.6-14.6
8.4-10.4
16-22
17-23
17-23
102-112
106-116
110-120
295-315
297-317
299-319
8-13
8-13
8-13
8-13
8-13
8-13
9.1-11.1
6.9-8.9
4.7-6.7
20-26
21-27
21-27
142-152
142-152
142-152
287-307
273-239
259-279
7-12
7-12
7-12
10-15
8-13
8-13
15.9-17.9
11.8-13.8
7.8-9.8
16-22
17-23
17-23
131-141
137-147
144-154
324-344
326-346
328-348
9-14
9-14
9-14
10-15
10-15
10-15
12.1-14.1
9.3-11.3
6.6-8.6
25-33
26-34
26-34
1.5
2.25
3
146-156
146-156
146-156
375-395
361-381
347-367
6-11
6-11
6-11
10-15
8-13
8-13
14.9-16.9
11-13
7.2-9.2
16-22
17-23
17-23
174-184
180-190
187-197
360-380
367-387
374-394
10-15
11-16
12-17
12-17
12-17
12-17
15.8-17.8
11.9-13.9
8-10
32-40
33-41
33-41
1.5
2.25
3
154-164
154-164
154-164
478-498
461-481
445-465
6-11
6-11
6-11
10-15
8-13
8-13
14-16
10.2-12.2
6.5-8.5
16-22
16-22
16-22
*Based on 15% Methanol antifreeze solution
38
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Unit Operating Conditions
Table 12: TS Series Typical Unit Operating Pressures and Temperatures: Continued
024
Full Load Cooling - without HWG active
Entering
Water
Temp °F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
30*
1.5
2.25
3
115-125
115-125
115-125
154-174
141-161
127-147
50
1.5
2.25
3
115-120
115-120
115-120
70
1.5
2.25
3
90
110
Full Load Heating - without HWG active
Subcooling
Water
Temp Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
Subcooling
Water
Temp Drop
°F
Air Temp
Rise °F DB
40-45
40-45
40-45
8-13
6-11
6-11
16.5-18.5
12.1-14.1
77.7-9.7
19-25
20-26
20-26
73-83
75-85
78-88
283-303
285-305
287-307
8-12
8-12
8-12
6-11
6-11
6-11
5.9-7.9
4.2-6.2
2.7-4.7
16-22
17-23
18-24
209-229
195-215
181-201
24-29
24-29
24-29
10-15
8-13
8-13
15.7-17.7
11.6-13.6
7.6-9.6
18-24
18-24
18-24
102-112
106-116
110-120
313-333
314-334
316-336
8-12
8-12
8-12
8-13
8-13
8-13
8.9-10.9
6.7-8.7
4.5-6.5
22-28
23-29
23-29
136-146
136-146
136-146
275-295
261-281
247-267
6-11
6-11
6-11
6-11
5-10
4-9
15.7-17.7
11.6-13.6
7.6-9.6
18-24
18-24
18-24
128-138
134-144
141-151
340-360
342-362
344-364
9-14
9-14
9-14
9-14
9-14
9-14
11.3-13.3
8.5-10.5
5.8-7.8
27-34
28-35
28-35
1.5
2.25
3
140-150
140-150
140-150
361-381
347-367
333-353
6-11
6-11
6-11
6-11
5-10
4-9
14.9-16.9
11-13
7.2-9.2
18-24
18-24
18-24
162-172
166-176
171-181
370-390
376-396
383-403
14-19
15-20
16-21
9-14
9-14
9-14
14.4-16.4
10.8-12.8
7.1-9.1
32-40
34-42
34-42
1.5
2.25
3
144-154
144-154
144-154
460-480
445-465
428-448
6-11
6-11
6-11
6-11
4-9
4-9
13.9-15.9
10.2-12.2
6.5-8.5
17-23
17-23
17-23
*Based on 15% Methanol antifreeze solution
030
Full Load Cooling - without HWG active
Entering
Water
Temp °F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
30*
1.5
2.25
3
116-126
115-125
115-125
146-166
138-158
128-148
50
1.5
2.25
3
129-139
128-138
128-138
70
1.5
2.25
3
90
110
Full Load Heating - without HWG active
Subcooling
Water
Temp Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
Subcooling
Water
Temp Drop
°F
Air Temp
Rise °F
DB
27-32
27-32
27-32
7-13
6-11
6-11
19.6-21.6
14.3-16.3
8-10
16-22
17-23
17-23
69-79
73-83
76-86
275-295
277-297
279-299
7-12
7-12
7-12
6-11
6-11
6-11
7.2-9.2
5.4-7.4
3.5-5.5
16-22
17-23
17-23
217-237
203-223
189-209
12-17
12-17
12-17
6-11
5-10
5-10
20.8-22.8
15-17
9.2-11.2
17-23
18-24
18-24
96-106
100-110
105-115
300-320
304-324
309-329
10-15
10-15
10-15
9-14
9-14
9-14
10.5-12.5
7.6-9.6
4.8-6.8
21-27
22-28
22-28
132-142
131-141
131-141
293-313
274-294
256-276
9-14
9-14
9-14
6-11
5-10
5-10
20.1-22.1
14.4-16.4
8.6-10.6
17-23
18-24
18-24
123-133
129-139
135-145
327-347
333-353
339-359
11-16
11-16
11-16
11-16
11-16
11-16
13.2-15.2
9.8-11.8
6.4-8.4
25-32
26-33
27-34
1.5
2.25
3
137-147
137-147
137-147
383-403
362-382
342-362
7-12
7-12
7-12
5-10
5-10
5-10
19.4-21.4
13.8-15.8
8.2-10.2
16-22
16-22
16-22
155-165
162-172
169-179
355-375
362-382
369-389
13-18
14-19
16-21
11-16
11-16
11-16
16.8-18.8
12.7-14.7
8.6-10.6
30-38
31-39
32-40
1.5
2.25
3
143-153
143-153
143-153
475-495
457-477
439-459
6-11
6-11
6-11
9-14
6-11
6-11
18.2-20.2
13-14
7.7-9.7
16-22
16-22
16-22
*Based on 15% Methanol antifreeze solution
036
Full Load Cooling - without HWG active
Entering
Water
Temp °F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
30*
1.5
2.25
3
117-127
116-126
116-126
142-162
134-154
124-144
50
1.5
2.25
3
136-146
136-146
136-146
70
1.5
2.25
3
90
110
Full Load Heating - without HWG active
Subcooling
Water
Temp Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
Subcooling
Water
Temp Drop
°F
Air Temp
Rise °F
DB
33-38
33-38
33-38
8-14
7-12
7-12
19.1-21.1
13.8-15.8
7.4-9.4
15-22
15-22
15-22
69-79
73-83
76-86
276-296
278-298
280-300
10-15
10-15
10-15
10-15
10-15
10-15
7.2-9.2
5.3-7.3
3.5-5.5
17-23
18-24
18-24
211-231
197-217
183-203
11-16
11-16
11-16
6-11
5-10
5-10
20.6-22.6
14.8-16.8
9-11
17-23
17-23
17-23
99-109
103-113
108-118
302-322
306-326
311-331
10-15
10-15
10-15
13-18
13-18
13-18
10.6-12.6
7.7-9.7
5-7
22-28
23-29
23-29
137-147
137-147
137-147
275-295
260-280
245-265
9-14
9-14
9-14
10-15
9-14
9-14
19-21
13.8-15.8
8-10
18-24
19-25
19-25
127-137
133-143
139-149
332-352
338-358
344-364
10-15
10-15
10-15
15-20
15-20
15-20
13.5-15.5
10.1-12.1
6.7-8.7
27-34
28-35
29-36
1.5
2.25
3
142-152
142-152
142-152
373-393
352-372
332-352
7-12
8-13
8-13
10-15
6-11
6-11
19.5-21.5
13.9-15.9
8.3-10.3
17-23
17-23
17-23
164-174
172-182
181-191
365-385
372-392
379-399
11-16
11-16
12-17
15-20
15-20
15-20
17.4-19.4
13.2-15.2
9-11
34-42
35-43
36-44
1.5
2.25
3
147-157
147-157
147-157
467-487
448-468
430-450
6-11
6-11
6-11
10-15
8-13
7-12
16.2-18.2
11.9-13.9
7.6-9.6
16-22
16-22
16-22
*Based on 15% Methanol antifreeze solution
c l i m a t e m a s t e r. c o m
39
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Unit Operating Conditions
Table 12: TS Series Typical Unit Operating Pressures and Temperatures: Continued
042
Full Load Cooling - without HWG active
Entering
Water
Temp °F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
30*
1.5
2.25
3
114-124
113-123
113-123
170-190
150-170
131-151
50
1.5
2.25
3
130-140
129-139
129-139
70
1.5
2.25
3
90
110
Full Load Heating - without HWG active
Subcooling
Water
Temp Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
Subcooling
Water
Temp Drop
°F
Air Temp
Rise °F
DB
27-32
27-32
27-32
10-15
9-14
7-12
17.2-19.2
12.7-14.7
8.2-10.2
17-23
17-23
17-23
69-79
72-82
75-85
286-306
289-309
292-312
5-10
5-10
6-11
5-10
6-11
6-11
4.5-6.5
3.9-5.9
3.2-5.2
16-22
17-23
18-24
226-246
208-228
190-210
10-15
10-15
10-15
6-11
5-10
4-9
17.8-19.8
13.3-15.3
8.8-10.8
20-26
20-26
20-26
100-110
105-115
110-120
315-335
322-342
330-350
7-12
8-13
10-15
6-11
6-11
7-12
9-11
7-9
5-7
22-28
23-29
24-30
132-142
131-141
131-141
290-310
273-293
255-275
6-11
6-11
6-11
6-11
5-10
4-9
17.3-19.3
12.8-14.8
8.3-10.3
19-25
19-25
19-25
131-141
138-148
145-155
347-367
358-378
369-389
11-16
13-18
16-21
6-11
8-13
9-14
13.4-15.4
10-12
6.9-8.9
29-35
30-36
31-37
1.5
2.25
3
136-146
135-145
135-145
370-390
350-370
330-350
6-11
6-11
6-11
6-11
5-10
4-9
16-18
11.8-13.8
7.6-9.6
17-23
17-23
17-23
175-185
177-187
180-190
393-413
401-421
409-429
19-24
20-25
22-27
7-12
9-14
12-17
17.6-19.6
13.2-15.2
8.7-10.7
36-42
37-43
38-44
1.5
2.25
3
143-153
142-152
141-151
469-489
448-468
427-447
6-11
6-11
6-11
6-11
5-10
4-9
14-16
11-13
7-9
16-22
16-22
16-22
*Based on 15% Methanol antifreeze solution
048
Full Load Cooling - without HWG active
Entering
Water
Temp °F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
30*
1.5
2.25
3
108-118
107-117
107-117
180-200
161-181
142-162
50
1.5
2.25
3
123-133
122-132
122-132
70
1.5
2.25
3
90
110
Full Load Heating - without HWG active
Subcooling
Water
Temp Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
Subcooling
Water
Temp Drop
°F
Air Temp
Rise °F
DB
27-32
28-33
29-34
12-17
10-15
9-14
19.8-21.8
14.8-16.8
9.8-11.8
19-25
19-25
19-25
65-75
68-78
72-82
293-313
297-217
301-321
7-12
8-13
9-14
9-14
9-14
9-14
8.2-10.2
6.2-8.2
4.2-6.2
17-23
18-24
19-25
236-256
218-238
200-220
16-21
17-22
17-22
8-13
7-12
6-11
20.2-22.2
15.2-18.2
10.2-12.2
21-27
21-27
21-27
92-102
100-110
108-118
321-341
330-350
340-360
10-15
11-16
12-17
11-16
11-16
11-16
11.6-13.6
8.9-10.9
6-8
23-29
24-30
26-32
130-140
129-139
129-139
305-325
285-305
265-285
10-15
11-16
11-16
8-13
6-11
5-10
20-22
15-17
10-12
20-26
20-26
20-26
122-132
133-143
144-154
353-373
365-385
378-398
12-17
14-19
16-21
11-16
11-16
11-16
15-17
11.5-13.5
8-10
29-35
31-37
33-39
1.5
2.25
3
133-143
132-142
132-142
390-410
368-388
345-365
8-13
9-14
9-14
8-13
6-11
5-10
19-21
14-16
9-11
19-25
19-25
19-25
166-176
173-183
181-191
397-417
407-727
417-437
16-21
18-23
19-24
9-14
9-14
10-15
19.5-21.5
14.7-16.7
9.9-11.9
37-43
38-44
40-46
1.5
2.25
3
141-151
140-150
140-150
497-517
472-492
447-467
6-11
7-12
8-13
8-13
6-11
5-10
18-20
13.5-15.5
8.7-10.7
18-24
18-24
18-24
*Based on 15% Methanol antifreeze solution
060
Full Load Cooling - without HWG active
Entering
Water
Temp °F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
30*
1.5
2.25
3
98-108
97-107
96-106
160-180
149-169
137-157
50
1.5
2.25
3
118-128
117-127
115-125
70
1.5
2.25
3
90
110
Full Load Heating - without HWG active
Subcooling
Water
Temp Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
Subcooling
Water
Temp Drop
°F
Air Temp
Rise °F DB
40-45
41-46
42-48
12-17
12-17
11-16
20-22
14.3-16.3
8.5-10.5
19-25
19-25
20-26
62-72
66-76
70-80
276-296
280-300
284-304
6-11
6-11
7-12
6-11
6-11
6-11
8-10
6-8
4-6
17-23
18-24
19-25
225-245
210-230
195-215
36-41
37-42
38-43
11-16
10-15
9-14
21.2-23.2
15.7-17.7
10.2-12.2
19-25
20-26
21-27
88-98
94-104
100-110
306-326
311-331
317-337
10-15
10-15
11-16
8-13
8-13
9-14
11-13
8.3-10.3
5.5-7.5
23-29
24-30
25-31
135-145
133-143
132-142
300-320
285-305
270-290
12-17
14-19
16-21
9-14
8-13
7-12
20.3-22.3
15-17
10-12
21-27
21-27
22-28
112-122
122-132
130-140
333-353
342-362
351-371
12-17
14-19
15-20
10-15
10-15
11-16
14-16
10.5-12.5
7.3-9.3
28-34
30-36
32-38
1.5
2.25
3
139-149
138-148
138-148
390-410
370-390
350-370
8-13
8-13
8-13
7-12
6-11
6-11
19.3-21.3
14.3-16.3
9.3-11.3
20-26
21-27
21-27
147-157
154-164
160-170
369-389
377-397
385-405
15-20
18-23
19-24
10-15
10-15
11-16
17.7-19.7
13.4-15.4
9-11
36-42
37-43
38-44
1.5
2.25
3
144-154
143-153
142-152
488-508
468-488
448-468
8-13
7-12
7-12
8-13
6-11
5-10
18.4-20.4
13.6-15.6
8.8-10.8
21-27
21-27
21-27
*Based on 15% Methanol antifreeze solution
40
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Unit Operating Conditions
Table 12: TS Series Typical Unit Operating Pressures and Temperatures: Continued
070
Full Load Cooling - without HWG active
Full Load Heating - without HWG active
Entering
Water
Temp °F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
Subcooling
Water
Temp
Rise
°F
30*
1.5
2.25
3
110-120
109-119
107-117
177-197
162-182
147-167
36-41
37-42
38-43
15-20
13-18
11-16
20.2-22.2
15-17
9.7-11.7
21-27
21-27
22-28
61-71
65-75
68-78
290-310
292-312
296-316
12-18
12-18
12-18
9-14
10-15
10-15
8-10
6-8
4-6
19-25
20-26
21-27
50
1.5
2.25
3
128-138
128-138
127-137
246-266
228-248
210-230
18-23
19-24
20-25
11-16
9-14
6-11
21-23
15.6-17.6
10.2-12.2
22-28
23-29
24-30
88-98
96-106
105-115
320-340
330-350
338-358
11-17
11-17
11-17
13-18
11-16
9-14
11.7-13.7
9-11
6-8
26-32
27-33
29-35
70
1.5
2.25
3
134-144
133-143
131-141
305-325
289-309
273-293
9-14
9-14
9-14
11-16
9-14
6-11
20.8-22.8
15.4-17.4
10-12
23-29
23-29
23-29
118-128
130-140
141-151
355-375
368-388
380-400
10-16
12-18
15-21
14-19
13-18
11-16
15.2-17.2
11.7-13.7
8-10
33-39
35-41
37-43
90
1.5
2.25
3
140-150
139-149
138-148
390-410
373-393
355-375
10-15
10-15
10-15
11-16
9-14
6-11
19.6-21.6
14.5-16.5
9.3-11.3
22-28
22-28
22-28
158-168
168-178
178-188
401-421
412-432
423-443
9-15
10-16
12-18
13-18
12-17
12-17
19.5-21.5
14.8-16.8
10-12
41-47
43-49
45-51
110
1.5
2.25
3
144-154
143-153
142-152
488-508
468-488
448-468
10-15
10-15
9-14
9-14
6-11
5-10
18.4-20.4
13.6-15.6
8.8-10.8
20-27
20-27
20-27
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat
Subcooling
Water
Temp Drop
°F
Air Temp
Rise °F
DB
*Based on 15% Methanol antifreeze solution
c l i m a t e m a s t e r. c o m
41
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Preventive Maintenance
Water Coil Maintenance
(Direct ground water applications only) - If the system is
installed in an area with a known high mineral content
(125 P.P.M. or greater) in the water, it is best to establish a
periodic maintenance schedule with the owner so the coil
can be checked regularly. Consult the well water applications
section of this manual for a more detailed water coil material
selection. Should periodic coil cleaning be necessary, use
standard coil cleaning procedures, which are compatible
with the heat exchanger material and copper water lines.
Generally, the more water flowing through the unit, the less
chance for scaling. Therefore, 1.5 gpm per ton [2.0 l/m per
kW] is recommended as a minimum flow. Minimum flow
rate for entering water temperatures below 50°F [10°C] is 2.0
gpm per ton [2.6 l/m per kW].
Water Coil Maintenance
(All other water loop applications)
Generally water coil maintenance is not needed for closed
loop systems. However, if the piping is known to have
high dirt or debris content, it is best to establish a periodic
maintenance schedule with the owner so the water coil can
be checked regularly. Dirty installations are typically the result
of deterioration of iron or galvanized piping or components
in the system. Open cooling towers requiring heavy chemical
treatment and mineral buildup through water use can also
contribute to higher maintenance. Should periodic coil
cleaning be necessary, use standard coil cleaning procedures,
which are compatible with both the heat exchanger material
and copper water lines. Generally, the more water flowing
through the unit, the less chance for scaling. However, flow
rates over 3 gpm per ton (3.9 l/m per kW) can produce water
(or debris) velocities that can erode the heat exchanger wall
and ultimately produce leaks.
Hot Water Generator Coils
See water coil maintenance for ground water units. If the
potable water is hard or not chemically softened, the high
temperatures of the desuperheater will tend to scale even
quicker than the water coil and may need more frequent
inspections. In areas with extremely hard water, a HWG is
not recommended.
Filters
Filters must be clean to obtain maximum performance.
Filters should be inspected every month under normal
operating conditions and be replaced when necessary. Units
should never be operated without a filter.
Condensate Drain
In areas where airborne bacteria may produce a “slimy”
substance in the drain pan, it may be necessary to treat the
drain pan chemically with an algaecide approximately every
three months to minimize the problem. The condensate pan
may also need to be cleaned periodically to insure indoor
air quality. The condensate drain can pick up lint and dirt,
especially with dirty filters. Inspect the drain twice a year to
avoid the possibility of plugging and eventual overflow.
Compressor
Conduct annual amperage checks to insure that amp draw
is no more than 10% greater than indicated on the serial
plate data.
Fan Motors
All units have lubricated fan motors. Fan motors should
never be lubricated unless obvious, dry operation
is suspected. Periodic maintenance oiling is not
recommended, as it will result in dirt accumulating in the
excess oil and cause eventual motor failure. Conduct annual
dry operation check and amperage check to insure amp
draw is no more than 10% greater than indicated on serial
plate data.
Air Coil
The air coil must be cleaned to obtain maximum
performance. Check once a year under normal operating
conditions and, if dirty, brush or vacuum clean. Care must
be taken not to damage the aluminum fins while cleaning.
CAUTION: Fin edges are sharp.
Cabinet
Do not allow water to stay in contact with the cabinet for
long periods of time to prevent corrosion of the cabinet sheet
metal. Generally, vertical cabinets are set up from the floor
a few inches [7 - 8 cm] to prevent water from entering the
cabinet. The cabinet can be cleaned using a mild detergent.
Refrigerant System
To maintain sealed circuit integrity, do not install service
gauges unless unit operation appears abnormal. Reference
the operating charts for pressures and temperatures. Verify
that air and water flow rates are at proper levels before
servicing the refrigerant circuit.
Washable, high efficiency, electrostatic filters, when dirty,
can exhibit a very high pressure drop for the fan motor and
reduce air flow, resulting in poor performance. It is especially
important to provide consistent washing of these filters (in
the opposite direction of the normal air flow) once per month
using a high pressure wash similar to those found at selfserve car washes.
42
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Troubleshooting
General
If operational difficulties are encountered, perform
the preliminary checks below before referring to the
troubleshooting charts.
• Verify that the unit is receiving electrical supply power.
• Make sure the fuses in the fused disconnect switches
are intact.
After completing the preliminary checks described above,
inspect for other obvious problems such as leaking
connections, broken or disconnected wires, etc. If everything
appears to be in order, but the unit still fails to operate
properly, refer to the “CXM Troubleshooting Process
Flowchart” or “Functional Troubleshooting Chart.”
CXM Board
CXM board troubleshooting in general is best summarized
as simply verifying inputs and outputs. After inputs and
outputs have been verified, board operation is confirmed and
the problem must be elsewhere. Below are some general
guidelines for troubleshooting the CXM control.
Field Inputs
All inputs are 24VAC from the thermostat and can be verified
using a volt meter between C and Y, G, O, W. 24VAC will be
present at the terminal (for example, between “Y” and “C”) if
the thermostat is sending an input to the CXM board.
Sensor Inputs
All sensor inputs are ‘paired wires’ connecting each component
to the board. Therefore, continuity on pressure switches, for
example can be checked at the board connector.
Test Mode
Test mode can be entered for 20 minutes by shorting the test
pins. The CXM board will automatically exit test mode after
20 minutes.
CXM Troubleshooting Process Flowchart/Functional
Troubleshooting Chart
The “CXM Functional Troubleshooting Process Flowchart”
is a quick overview of how to start diagnosing a suspected
problem, using the fault recognition features of the CXM
board. The “Functional Troubleshooting Chart” on the
following page is a more comprehensive method for
identifying a number of malfunctions that may occur, and is
not limited to just the CXM controls. Within the chart are five
columns:
• The “Fault” column describes the symptoms.
• Columns 2 and 3 identify in which mode the fault is likey to
occur, heating or cooling.
• The “Possible Cause column” identifies the most likely
sources of the problem.
• The “Solution” column describes what should be done to
correct the problem.
WARNING!
WARNING! HAZARDOUS VOLTAGE! DISCONNECT
ALL ELECTRIC POWER INCLUDING REMOTE
DISCONNECTS BEFORE SERVICING.
Failure to disconnect power before servicing can cause
severe personal injury or death.
The thermistor resistance should be measured with the
connector removed so that only the impedance of the
thermistor is measured. If desired, this reading can be
compared to the thermistor resistance chart shown in
the CXM AOM manual. An ice bath can be used to check
calibration of the thermistor.
Outputs
The compressor relay is 24VAC and can be verified using a
voltmeter. The fan signal is passed through the board to the
external fan relay (units with PSC motors only). The alarm
relay can either be 24VAC as shipped or dry contacts for use
with DDC controls by clipping the JW1 jumper. Electric heat
outputs are 24VDC “ground sinking” and require a volt meter
set for DC to verify operation. The terminal marked “24VDC”
is the 24VDC supply to the electric heat board; terminal “EH1”
is stage 1 electric heat; terminal “EH2” is stage 2 electric heat.
When electric heat is energized (thermostat is sending a “W”
input to the CXM controller), there will be 24VDC between
terminal “24VDC” and “EH1” (stage 1 electric heat) and/or
“EH2” (stage 2 electric heat). A reading of 0VDC between
“24VDC” and “EH1” or “EH2” will indicate that the CXM board
is NOT sending an output signal to the electric heat board.
c l i m a t e m a s t e r. c o m
43
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
CXM Process Flow Chart
WARNING!
WARNING! HAZARDOUS VOLTAGE! DISCONNECT
ALL ELECTRIC POWER INCLUDING REMOTE
DISCONNECTS BEFORE SERVICING.
Failure to disconnect power before servicing can cause
severe personal injury or death.
Start
Did Unit
Attempt to
Start?
CXM Functional
Troubleshooting Flow Chart
No
Check Main
power (see power
problems)
Yes
Did Unit
Lockout at
Start-up?
No
See “ Unit
short
cycles”
Yes
Yes
Unit Short
Cycles?
No fault
shown
Check fault LED code
on control board
See HP
Fault
See
LP/LOC
Fault
See FP1
Fault
No
See “ Only
Fan Runs”
See “ Only
Comp
Runs”
Yes
Yes
See FP2
Fault
Only Fan
Runs?
See
Condensate
Fault
No
Only
Compressor
Runs?
No
See “ Does No
not Operate
in Clg”
Did unit lockout Yes
after a period of
operation?
No
Does unit
operate in
cooling?
Yes
Unit is OK!
‘See Performance
Troubleshooting’ for
further help
44
Geothermal Heat Pump Systems
See Over/
Under
Voltage
Replace
CXM
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Functional Troubleshooting
Fault
Main power problems
HP Fault
Code 2
Htg Clg Possible Cause
Solution
Air temperature out of range in heating
Overcharged with refrigerant
Bad HP Switch
Insufficient charge
Check line voltage circuit breaker and disconnect.
Check for line voltage between L1 and L2 on the contactor.
Check for 24VAC between R and C on CXM/DXM'
Check primary/secondary voltage on transformer.
Check pump operation or valve operation/setting.
Check water flow adjust to proper flow rate.
Bring water temp within design parameters.
Check for dirty air filter and clean or replace.
Check fan motor operation and airflow restrictions.
Dirty Air Coil- construction dust etc.
Too high of external static. Check static vs blower table.
Bring return air temp within design parameters.
Check superheat/subcooling vs typical operating condition table.
Check switch continuity and operation. Replace.
Check for refrigerant leaks
X
Compressor pump down at start-up
Check charge and start-up water flow.
X
Reduced or no water flow in heating
X
X
Inadequate antifreeze level
Improper temperature limit setting (30°F vs
10°F [-1°C vs -2°C])
Water Temperature out of range
Bad thermistor
X
Reduced or no air flow in cooling
X
X
X
X
Air Temperature out of range
Improper temperature limit setting (30°F vs
10°F [-1°C vs -12°C])
Bad thermistor
Blocked drain
Improper trap
X
Poor drainage
X
x
X
X
X
Moisture on sensor
Plugged air filter
Restricted Return Air Flow
X
X
Under Voltage
X
X
Over Voltage
X
X
Green Status LED Off
X
Reduced or no water flow in cooling
X
Water Temperature out of range in cooling
X
Reduced or no air flow in heating
High Pressure
LP/LOC Fault
Code 3
X
X
X
X
X
X
X
Low Pressure / Loss of Charge
LT1 Fault
Code 4
Water coil low
temperature limit
X
X
X
LT2 Fault
Code 5
Air coil low
temperature limit
X
X
X
X
Condensate Fault
Code 6
Over/Under
Voltage Code 7
(Auto resetting)
Unit Performance Sentinel
Code 8
No Fault Code Shown
Unit Short Cycles
Only Fan Runs
Only Compressor Runs
Unit Doesn’t Operate
in Cooling
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Heating mode FP2>125°F [52°C]
Cooling Mode FP1>125°F [52°C] OR FP2<
40ºF [4ºC])
No compressor operation
Compressor overload
Control board
Dirty air filter
Unit in "test mode"
Unit selection
Compressor overload
Thermostat position
Unit locked out
Compressor Overload
X
X
Thermostat wiring
X
X
Thermostat wiring
X
X
X
X
X
X
X
Fan motor
X
X
Thermostat wiring
X
Reversing valve
X
X
Thermostat setup
Thermostat wiring
X
Thermostat wiring
Fan motor relay
Check pump operation or water valve operation/setting.
Plugged strainer or filter. Clean or replace..
Check water flow adjust to proper flow rate.
Check antifreeze density with hydrometer.
Clip JW3 jumper for antifreeze (10°F [-12°C]) use.
Bring water temp within design parameters.
Check temp and impedance correlation per chart
Check for dirty air filter and clean or replace.
Check fan motor operation and airflow restrictions.
Too high of external static. Check static vs blower table.
Too much cold vent air? Bring entering air temp within design parameters.
Normal airside applications will require 30°F [-1°C] only.
Check temp and impedance correlation per chart.
Check for blockage and clean drain.
Check trap dimensions and location ahead of vent.
Check for piping slope away from unit.
Check slope of unit toward outlet.
Poor venting. Check vent location.
Check for moisture shorting to air coil.
Replace air filter.
Find and eliminate restriction. Increase return duct and/or grille size.
Check power supply and 24VAC voltage before and during operation.
Check power supply wire size.
Check compressor starting. Need hard start kit?
Check 24VAC and unit transformer tap for correct power supply voltage.
Check power supply voltage and 24VAC before and during operation.
Check 24VAC and unit transformer tap for correct power supply voltage.
Check for poor air flow or overcharged unit.
Check for poor water flow, or air flow.
See "Only Fan Operates".
Check and replace if necessary.
Reset power and check operation.
Check and clean air filter.
Reset power or wait 20 minutes for auto exit.
Unit may be oversized for space. Check sizing for actual load of space.
Check and replace if necessary
Ensure thermostat set for heating or cooling operation.
Check for lockout codes. Reset power.
Check compressor overload. Replace if necessary.
Check thermostat wiring at heat pump. Jumper Y and R for compressor operation
in test mode.
Check G wiring at heat pump. Jumper G and R for fan operation
Jumper G and R for fan operation. Check for Line voltage across BR contacts.
Check fan power enable relay operation (if present).
Check for line voltage at motor. Check capacitor.
Check thermostat wiring at heat pump. Jumper Y and R for compressor operation
in test mode
Set for cooling demand and check 24VAC on RV coil and at CXM/DXM board.
If RV is stuck, run high pressure up by reducing water flow and while operating
engage and disengage RV coil voltage to push valve.
Check for ‘O’ RV setup not ‘B’.
Check O wiring at heat pump. Jumper O and R for RV coil ‘click’.
Put thermostat in cooling mode. Check 24 VAC on O (check between C and
O); check for 24 VAC on W (check between W and C). There should be voltage
on O, but not on W. If voltage is present on W, thermostat may be bad or wired
incorrectly.
c l i m a t e m a s t e r. c o m
45
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Performance Troubleshooting
Performance Troubleshooting
Htg Clg Possible Cause
X
X
Dirty filter
Solution
Replace or clean.
Check for dirty air filter and clean or replace.
X
Reduced or no air flow in heating
Check fan motor operation and airflow restrictions.
Too high of external static. Check static vs. blower table.
Check for dirty air filter and clean or replace.
X
Reduced or no air flow in cooling
Check fan motor operation and airflow restrictions.
Too high of external static. Check static vs. blower table.
Insufficient capacity/ Not
cooling or heating
X
X
Leaky duct work
Check supply and return air temperatures at the unit and at distant duct registers
if significantly different, duct leaks are present.
X
X
Low refrigerant charge
Check superheat and subcooling per chart.
X
X
Restricted metering device
Check superheat and subcooling per chart. Replace.
X
Defective reversing valve
Perform RV touch test.
X
X
Thermostat improperly located
Check location and for air drafts behind stat.
X
X
Unit undersized
Recheck loads & sizing. Check sensible clg. load and heat pump capacity.
X
X
Scaling in water heat exchanger
Perform scaling check and clean if necessary.
X
X
Inlet water too hot or too cold
Check load, loop sizing, loop backfill, ground moisture.
Check for dirty air filter and clean or replace.
X
Reduced or no air flow in heating
Check fan motor operation and air flow restrictions.
Too high of external static. Check static vs. blower table.
High Head Pressure
X
Reduced or no water flow in cooling
X
Inlet water too hot
X
Check pump operation or valve operation/setting.
Check water flow. Adjust to proper flow rate.
Check load, loop sizing, loop backfill, ground moisture.
Air temperature out of range in heating
Bring return air temperature within design parameters.
X
Scaling in water heat exchanger
Perform scaling check and clean if necessary.
X
X
Unit overcharged
Check superheat and subcooling. Re-weigh in charge.
X
X
Non-condensables in system
Vacuum system and re-weigh in charge.
X
X
Restricted metering device.
Check superheat and subcooling per chart. Replace.
Check pump operation or water valve operation/setting.
X
Reduced water flow in heating.
Plugged strainer or filter. Clean or replace.
Check water flow. Adjust to proper flow rate.
X
Water temperature out of range.
Bring water temperature within design parameters.
Check for dirty air filter and clean or replace.
Low Suction Pressure
X
Reduced air flow in cooling.
Check fan motor operation and air flow restrictions.
X
Air temperature out of range
Too much cold vent air? Bring entering air temperature within design parameters.
Insufficient charge
Check for refrigerant leaks.
Too high of external static. Check static vs. blower table.
X
Low Discharge Air Temperature
in Heating
High humidity
46
X
X
Too high of air flow
Check fan motor speed selection and air flow chart.
X
Poor performance
See ‘Insufficient Capacity’
X
Too high of air flow
Check fan motor speed selection and airflow chart.
X
Unit oversized
Recheck loads & sizing. Check sensible clg load and heat pump capacity.
Geothermal Heat Pump Systems
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Troubleshooting Form
Refrigerant Circuit Diagram
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Look up pressure drop in
I.O.M. or spec. catalog to
determine flow rate.
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6$7
$)
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Look up pressure drop in
I.O.M. or spec. catalog to
determine flow rate.
+HDWRI([WUDFWLRQ$EVRUSWLRQRU+HDWRI5HMHFWLRQ
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Note: Never connect refrigerant gauges during startup procedures. Conduct water-side analysis using P/T ports to determine
water flow and temperature difference. If water-side analysis shows poor performance, refrigerant troubleshooting may be
required. Connect refrigerant gauges as a last resort.
c l i m a t e m a s t e r. c o m
47
48
Geothermal Heat Pump Systems
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Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Warranty
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Notes
c l i m a t e m a s t e r. c o m
49
Residential H&V - 60Hz HFC-410A
R e v. : 9 M a r c h , 2 0 1 1 B
Revision History
Page #
9 March, 10
16
HWG Piping Drawings Revised
24 Sept, 10
19
Electrical Data Updated
14 July, 10
4-6
Compressor isolation upgrade from springs to grommets
1 May, 10
48
New Warranty Update
30 April, 10
16
HWG Piping Drawings Revised
4 March, 10
18
HWG Piping Length Table Added
30 Oct., 09
45
Functional Troubleshooting Table Updated
10 June, 09
All
R22 Information Removed
19 May, 09
16-18
22 Dec, 08
8
Condensate Piping Information Changed
05 June, 08
All
Reformatted Document Size
21 Aug, 07
All
Updated with Model 072 Information
01 Oct, 06
All
First Published
Description
HWG info, warnings, anti-scald graphic, pg 18 new
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Date
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25
6
ISO 9001:2000
Certified
Quality: First & Always
7300 S.W. 44th Street
Oklahoma City, OK 73179
*97B0045N03*
97B0045N03
Phone: 405-745-6000
Fax: 405-745-6058
climatemaster.com
ClimateMaster works continually to improve its products. As a result, the design and specifications of each product at the time for order may be
changed without notice and may not be as described herein. Please contact ClimateMaster’s Customer Service Department at 1-405-745-6000
for specific information on the current design and specifications. Statements and other information contained herein are not express warranties
and do not form the basis of any bargain between the parties, but are merely ClimateMaster’s opinion or commendation of its products.
The management system governing the manufacture of ClimateMaster’s products is ISO 9001:2000 certified.
© ClimateMaster, Inc. 2006
50
Geothermal Heat Pump Systems
Rev: 9 March, 2011B
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