ClimateMaster Tranquility 20 Series Guide

Tranquility® 20 (TS) Series
Residential Horizontal & Vertical
Packaged Geothermal Heat Pumps
Installation, Operation &
Maintenance Instructions
97B0113N01
Rev.: October 5, 2021
H&V Products
Table of Contents
Model Nomenclature 3
Safety 4
Storage 5
Pre-Installation 5
Horizontal Installation 6-7
Horizontal Service Access 8
Field Conversion of Air Discharge 9
Duct System Installation 10
Vertical Installation Clearances 11
Vertical Installation 12-13
Water Connection Installation 14
Ground Loop Heat Pump Applications 14-16
Ground Water Heat Pump Applications 17
Water Quality Standards 18-21
Hot Water Generator 22-24
Electrical - Line Voltage 25-26
Electrical - Low Voltage Wiring 27
Accessory Connections 28
Electrical - Thermostat Wiring 29
ECM Blower Control 30-31
Blower Data 32-33
CXM Controls 34
Safety Features – CXM Control 35-37
Unit Commissioning & Operating Conditions 38
Unit Start-Up & Operating Conditions 39
Unit Start-Up Procedure 39-40
Unit Operating Conditions 41-45
Performance Data 46-60
Preventive Maintenance 61
Troubleshooting 62
CXM Process Flow Chart 63
Functional Troubleshooting 64
Performance Troubleshooting 65
Troubleshooting Form 66
Warranty 67
Revision History 68

Residential H&V - 60Hz HFC-410A:
Rev: October 5, 2021
2Geothermal Heating and Cooling
Sizes 048 and 070 ECM only
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Residential H&V - 60Hz HFC-410A
Rev: October 5, 2021
climatemaster.com
Sizes 048 and 070 ECM only
Model Nomenclature: General Overview

Residential H&V - 60Hz HFC-410A:
Rev: October 5, 2021
4Geothermal Heating and Cooling
General Information
⚠ WARNING! ⚠
⚠ WARNING! ⚠
⚠ CAUTION! ⚠
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.
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 can quickly become clogged with construction dirt
and debris, which may cause system damage and void
product warranty.
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.
Safety
Warnings, cautions and notices appear throughout this
manual. Read these items carefully before attempting any
installation, service, or troubleshooting of the equipment.
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.
WARNING: Indicates a potentially hazardous situation, which
if not avoided could result in death or serious injury.
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.
NOTICE: Notication of installation, operation or maintenance
information, which is important, but which is not hazard-
related.
⚠ WARNING! ⚠
WARNING! The EarthPure®Application and Service
Manual should be read and understood before attempting
to service refrigerant circuits with HFC-410A.
⚠ WARNING! ⚠
WARNING! This product can expose you to chemicals
including Carbon Black, which is known to the State of
California to cause cancer and Methanol, which is known
to the State of California to cause birth defects or other
reproductive harm. For more information go to
www.P65Warnings.ca.gov
The following warning complies with State of California law,
Proposition 65.

5
Residential H&V - 60Hz HFC-410A
Rev: October 5, 2021
climatemaster.com
General Information
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.
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.
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).
6. Loosen compressor bolts on units equipped with
compressor grommet vibration isolation until the
compressor ride freely on the grommets.
7. Locate and verify any hot water generator (HWG), hanger,
or other accessory kit located in the compressor section
or blower section.
⚠ CAUTION! ⚠
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.
⚠ CAUTION! ⚠
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.

Residential H&V - 60Hz HFC-410A:
Rev: October 5, 2021
6Geothermal Heating and Cooling
Horizontal Installation
Figure 1: Hanger Bracket
Figure 1: Hanger Bracket
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 lter and access panels. Provide su󰀩cient room to make
water, electrical, and duct connection(s).
If the unit is located in a conned 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 di󰀩cult 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
specications 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
specic series and model in unit specications 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
ttings. 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.
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.
Mounting Horizontal Units
Horizontal units have 4 hanger brackets partially attached
at the factory, one at each corner. Enclosed within the unit
there is a hanger kit hardware bag containing vibration
isolation grommets, washers, screws and a hanger
installation instruction page. One additional screw from
the hardware bag must be added to each hanger bracket
before unit installation.Tighten each screw to 75 in-lbs
(8.5 Nm). See Figure 1. Refer to the hanger installation
instruction page contained in the hardware bag for details
of nal hanger bracket attachment and unit suspension.
See Figure 1a.
Use four (4) eld supplied threaded rods and factory
provided vibration isolators to suspend the unit. Safely
lift the unit into position supporting the bottom of the
unit. Ensure the top of the unit is not in contact with any
external objects. Connect the top end of the 4 all-thread
rods, slide rods through the brackets and grommet then
assemble washers and double nuts at each rod. Ensure
that the unit is approximately level and that the threaded
rod extends past the nuts.
Pitch the unit toward the drain as shown in Figure 2 to
improve the condensate drainage. On small units (less
than 2.5 tons/8.8kW) ensure that unit pitch does not cause
condensate leaks inside the cabinet.
VIEW CONDENSATE END
BEFORE GROMMET AND HARDWARE
(Unit pictured for hanger bracket reference).
(Drain hardware may vary per unit model)
INSTALLED
AT FACTORY
ADD
BEFORE
HANGING
VIEW WATER CONNECTION END
FULLY ASSEMBLED
(Unit pictured for hanger bracket reference)
(Water hardware may vary per unit model)
ADD
BEFORE
HANGING

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Residential H&V - 60Hz HFC-410A
Rev: October 5, 2021
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Horizontal Installation
HORIZONTAL INSTALLATION
(by others)
(by others)
Cableado
del termostato
Válvula compensadora opcional
Salida de agua
Entrada de agua
Válvula invertida opcional para
control de baja presión de agua
(puede montarse en forma interna)
Válvula a bola con tapón
P/T integrado opcional
Manguera trenzada de
acero inoxidable con accesorio
giratorio en “J”
Circuito
de edicación
Disyuntor de
energía de la unidad
(fabricado por terceros)
Alimentación
de energía de
la unidad
Conducto de alimentación
aislado con un codo (mínimo)
de 90 grados para reducir el
ruido del aire
Retorno de
aire
Aire de alimentación
Cableado de
alimentación
de energía
Varillas Roscadas de 3/8"
(fabricadas por terceros)
Colgador
de la unidad
Thermostat
Wiring
Water In
Ball Valve with optional
integral P/T plug
Building
Loop
Water Out
Unit Power
Disconnect
Power Wiring
Insulated supply duct with
at least one 90 deg elbow
to reduce air noise
Return Air
Supply Air
Unit Hanger
3/8" [10mm] threaded rods
Unit Power
Flexible Duct
Connector
Figure 3: Typical Horizontal Unit Installation
Optional Balancing Valve
Stainless steel braid hose
with integral "J" swivel
Optional Low Pressure Drop Water
Control Valve
(can be internally mounted
on some models)
Figure 3: Typical Horizontal Unit Installation
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.
Drain
Connection
1/4” (6.4mm) pitch
toward drain for drainage
Figure 2: Horizontal Unit Pitch

Residential H&V - 60Hz HFC-410A:
Rev: October 5, 2021
8Geothermal Heating and Cooling
Horizontal Service Access
Left Return Back Discharge Right Return Back Discharge
Supply
Air Flow
Supply
Air Flow
Return
Air Flow
Return
Air Flow
Air Coil
Air Coil
Air Coil
Air Coil
Front Front
Front Front
BSP BSP
ASPASP ASP ASP
ASP ASP ASPASP
CCP CCP
CCP CCP
BSP BSP
Return
Air Flow
Return
Air Flow
Supply
Air Flow
Supply
Air Flow
Left Return Straight Discharge Right Return Straight Discharge
= mandatory 2′service access
= (optional) additional 2′service access
Notes:
1. While clear access to all removable panels is not required,
installer should take care to comply with all building codes
and allow adequate clearance for future eld service.
2. CCP and BSP requires 2’ service access.
3. Blower service access is through back panel on straight
discharge units or through panel opposite air coil on back,
discharge units.
4. ASP are removable panels that provide additional access
to the units interior. Clear access to ASP panels is not
required and they are not to be used in place of the
mandatory CC and BSP panels.
Legend:
CCP = Control/Compressor Access Panel
BSP = Blower Service Panel
ASP = Additional Service Panel (not required)

9
Residential H&V - 60Hz HFC-410A
Rev: October 5, 2021
climatemaster.com
Water
Connection End
Return Air
Remove Screws
Water
Connection End
Return Air
Rotate
Move to Side
Side Discharge
Return Air
Water
Connection End
Discharge Air
Drain
Back Discharge
Replace Screws
Extremo de Con
Conducto de Alimentación
Retorno de Aire
Extremo de Conexión de Agua
Drenaje
Retorno de Aire
Descarga de Aire
Descarga Lateral
Water
Connection End
Supply Duct
Return Air
Water
Connection End
Drain
Return Air
Discharge Air
Side Discharge
Back Discharge
Field Conversion of Air Discharge
Figure 5: Right Return Side to Back
Figure 4: Left Return Side to BackOverview -
Horizontal units can be eld converted between
side (straight) and back (end) discharge using the instructions
below.
Note: It is not possible to eld convert return air between left or
right return models due to the necessity of refrigeration copper
piping changes.
Preparation - It is best to eld convert the unit on the ground
before hanging. If the unit is already hung it should be taken
down for the eld conversion.
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.
Back to Side Discharge Conversion - If the discharge is
changed from back to side, use above instruction noting that
illustrations will be reversed.
Left vs. Right Return - It is not possible to eld 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 conguration 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.

Residential H&V - 60Hz HFC-410A:
Rev: October 5, 2021
10 Geothermal Heating and Cooling
2”
1.5”
1.5”
1/8” Per
Foot
Figure 6: Horizontal Condensate Connection
Horizontal Installation
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 ush 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.
⚠ CAUTION! ⚠
Duct System Installation
The duct system should be sized to handle the design
airow quietly. Refer to Figure 3 for horizontal duct system
details or gure 8 for vertical duct system details. A exible
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 berglass duct liner or be constructed
from ductboard for the rst few feet. Application of the unit
to uninsulated ductwork in an unconditioned space is not
recommended, as the unit’s performance will be adversely
a󰀨ected.
At least one 90° elbow should be included in the supply
duct to reduce air noise. If air noise or excessive air ow is
a problem, the blower speed can be changed. For airow
charts, consult specications catalog for the series and model
of the specic 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 airow 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.
DUCT SYSTEM INSTALLATION
CAUTION! Ensure condensate line is pitched toward drain
1/8 inch per ft [11mm per m] of run.

11
Residential H&V - 60Hz HFC-410A
Rev: October 5, 2021
climatemaster.com
Vertical Installation Clearances
Air Coil Side
Front
‡†1”
1”
1”
6”
*
Recommended Minimum Installation Clearances for Vertical Units*
1”
Back of unit
Side opposite return air
6” Front if hard piped
Return Air Side
1”
Ducted return
- ‡ *Add for duct width
- † Add 2” for 1” lter frame/rail or 3” for 2” lter frame/rail
Free (open) return - calculate required dimension for a maximum
velocity of 600 fpm
*Field installed accessories (hoses, air cleaners, etc.) and factory WSE option will require ad-
ditional space. Top supply air is shown, the same clearances apply to bottom supply air units.
Vertical Units
Left Return
Right Return
= mandatory 2′service access
= (optional) additional 2′service access
ASPASP
Air Coil
Front
CCP and BSP
Supply Air
Opening
ASPASP
Air Coil
Front
CCP and BSP
Supply Air
Opening
Notes:
1. While clear access to all removable
panels is not required, installer
should take care to comply with all
building codes and allow adequate
clearance for future eld service.
2. Front & Side access is preferred
for service access. However, all
components may be serviced
from the front access panel if side
access is not available.
3. ASP are removable panels that
provide additional access to the
units interior. Clear access to ASP
panels is not required and they
are not to be used in place of the
mandatory CCPand BSP panels.
4. Top supply air is shown, the same
clearances apply to bottom supply
air units.
Legend:
CCP = Control/Compressor Access Panel
BSP = Blower Service Panel
ASP = Additional Service Panel (not required)
Vertical Units
Left Return
Right Return
= mandatory 2′service access
= (optional) additional 2′service access
ASPASP
Air Coil
Front
CCP and BSP
Supply Air
Opening
ASPASP
Air Coil
Front
CCP and BSP
Supply Air
Opening

Residential H&V - 60Hz HFC-410A:
Rev: October 5, 2021
12 Geothermal Heating and Cooling
Vertical Installation
Figure 7: Vertical Unit Mounting
Figure 8: Typical Vertical Unit Installation Using Ducted
Return Air
bloque o del ladrillo o sacado
Cojín del aire o sacado
Bloque o ladrillo concreto
Air Pad or extruded
polystyrene insulation board
Flexible canvas duct
connector to reduce
noise and vibration
Use turning vanes in
supply transition
Internally insulate return
transition duct to reduce noise Rev.: 2/13
Internally insulate supply
duct for the first 4’ (1.2m)
each way to reduce noise
Rounded return
transition
Remove supply duct
flanges from inside blower
compartment and install
on supply air opening of
unit. Do not use a supply
air plenum/duct smaller
than the size of the supply
duct flanges.
Flexible canvas duct
connector to reduce
noise and vibration
Use turning vanes in
supply transition
Internally insulate supply
duct for first 1.2 m each way
to reduce noise
Internally insulate return
transition duct to reduce noise
Rounded return
transition
Remove supply duct
flanges from inside blower
compartment and install
on supply air opening of
unit. Do not use a supply
air plenum/duct smaller
than the size of the supply
duct flanges.
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 lter and access panels. Provide su󰀩cient room to make
water, electrical, and duct connection(s).
If the unit is located in a conned 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 di󰀩cult 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 specications 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 lter replacement and
drain pan cleaning. Do not block lter access with piping,
conduit or other materials. Refer to unit specications 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 su󰀩cient to allow
removal of the unit, if necessary.
5. Provide access to water valves and ttings and
screwdriver access to the unit side panels, discharge
collar and all electrical connections.
Downow units may be installed directly on the oor. The
optional internal electric heat is rated for zero clearance to
combustible materials.
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.

13
Residential H&V - 60Hz HFC-410A
Rev: October 5, 2021
climatemaster.com
Vertical Installation
Return
Air Inlet
Figure 9: Vertical Sound Attenuation
Vent
*3/4" FPT
3/4" PVC
Alternate
Condensate
Location
Water
Connections
* 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.
1/8" per foot
slope to drain
Figure 10a: Vertical Unit with Internal Condensate Trap
Figure 10c: Vertical Internal Condensate Trap
Condensate Piping for Vertical Units - Some units utilize
a condensate hose inside the cabinet as a trapping loop;
therefore an external trap is not necessary, other units require
an external condensate trap. Observe the condensate drain
connection to determine if a eld provided trap is necessary.
Units with a PVC socket connection are internally trapped,
units with stainless steel MPT connection require an external
trap. Figures 10a and b show typical condensate connections.
Figure 10c illustrates the internal trap that is present in some
units. Each unit must be installed with its own individual trap
and connection to the condensate line (main) or riser. Provide
a means to ush 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.
Install the external condensate trap with the top of the trap
positioned below the unit condensate drain connection as
shown in gure 10b. Design the depth of the trap (water-seal)
based upon the amount of the ESP capability of the blower
(ex. 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.
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 ba󰀪e
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.
2”
1.5”
1.5”
1/8” Per
Foot
Figure 10b: Vertical Unit with External Condensate Trap
⚠ CAUTION! ⚠
CAUTION! Ensure condensate line is pitched toward drain
1/8 inch per ft [11mm per m] of run.

Residential H&V - 60Hz HFC-410A:
Rev: October 5, 2021
14 Geothermal Heating and Cooling
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.
Gasket
Swivel Nut
Stainless steel
snap ring
Brass Adaptor
Hand Tighten
Only!
Do Not
Overtighten!
Figure 11: Water Connections
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.
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 ttings should not be used at any time
due to their tendency to corrode. All plastic to metal threaded
ttings should be avoided due to their potential to leak in earth
coupled applications. A anged tting should be substituted. P/T
plugs should be used so that ow 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.
Test individual horizontal loop circuits before backlling.
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 nal
purging and charging. A ush cart with at least a 1.5 hp [1.1
kW] pump is required to achieve enough uid velocity in the
loop piping system to purge air and dirt particles.
GROUND-LOOP HEAT PUMP APPLICATIONS
⚠ CAUTION! ⚠
High and
Low Voltage
Knockouts
Vibration Isolation Pad
To Thermostat
Figure 12: Typical Ground-Loop Application
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.
Water Connections
Swivel piping ttings are used 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 ush end of most 1”
threaded male pipe ttings provides a leak-free 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!

15
Residential H&V - 60Hz HFC-410A
Rev: October 5, 2021
climatemaster.com
Ground-Loop Heat Pump Applications
An 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 ushing.
1. Fill loop with water from a garden hose through the ush
cart before using the ush cart pump to insure an even ll.
2. Once full, the ushing process can begin. Do not allow
the water level in the ush 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 uid level in the tank above the return
tee so that air cannot be continuously mixed back into
the uid. Surges of 50 psi (345 kPa) can be used to help
purge air pockets by simply shutting o󰀨 the return valve
going into the ush 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 uid level in the ush cart tank when the
return valve is shut o󰀨. 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 ush tank (about a half gallon
[2.3 liters]), since liquids are incompressible. If the level
drops more than this, ushing should continue since air is
still being compressed in the loop uid. Perform the “dead
head” procedure a number of times. Note: This uid level
drop is your only indication of air in the loop.
Antifreeze may be added before, during or after the ushing
procedure. However, depending upon which time is chosen,
antifreeze could be wasted when emptying the ush cart
tank. See antifreeze section for more details.
Loop static pressure will uctuate with the seasons.
Pressures will be higher in the winter months than during
the cooling season. This uctuation 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 nal
ush 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
ooded. This is not required for Taco circulators. Insure
that the Flow Controller provides adequate ow through the
unit by checking pressure drop across the heat exchanger
and compare to the pressure drop tables at the back of the
manual.
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 uid 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 specic
gravity.
Table 1: Approximate Fluid Volume (gal.) per 100' of Pipe
Fluid Volume (gal [liters] per 100’ [30 meters) Pipe)
Pipe Size Volume (gal) [liters]
Copper
1” 4.1 [15.3]
1.25” 6.4 [23.8]
2.5” 9.2 [34.3]
Rubber Hose 1” 3.9 [14.6]
Polyethylene
3/4” IPS SDR11 2.8 [10.4]
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 Ex-
changer Typical 1.0 [3.8]
Flush Cart Tank 10” Dia x 3ft tall
[254mm x 91.4cm tall] 10 [37.9]
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.

Residential H&V - 60Hz HFC-410A:
Rev: October 5, 2021
16 Geothermal Heating and Cooling
Table 2: Antifreeze Percentages by Volume
Ground-Loop Heat Pump Applications
GROUND-WATER HEAT PUMP APPLICATIONS
Open Loop - Ground Water Systems
Typical open loop piping is shown in Figure 13. Shut o󰀨 valves
should be included for ease of servicing. Boiler drains or other
valves should be “tee’d” into the lines to allow acid ushing
of the heat exchanger. Shut o󰀨 valves should be positioned
to allow ow through the coax via the boiler drains without
allowing ow into the piping system. P/T plugs should be used
so that pressure drop and temperature can be measured.
Supply and return water piping should be limited to copper,
HPDE, or other acceptable high temperature material. Note
that PVC or CPVC material is not recommended as they are
not compatible with the polyolester oil used in HFC-410A
products.
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 qualied 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 ushing. 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 eld, 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 ow 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 gure 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 o󰀨-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).
Type
Minimum Temperature
for Low Temperature Protection
10°F
[-12.2°C]
15°F
[-9.4°C]
20°F
[-6.7°C]
25°F
[-3.9°C]
Methanol
Propylene Glycol
Ethanol*
21%
29%
23%
17%
24%
20%
13%
18%
16%
8%
12%
11%
* Must not be denatured with any petroleum based product

17
Residential H&V - 60Hz HFC-410A
Rev: October 5, 2021
climatemaster.com
Tanque de
Presión
Vá lvula
de Retención
Drenajes
de Calder a
Regulador
de Fluj o
Entrada
de Agua
Salida de Agua
Vá lvula
Filtro
Opcional
Tapones P/ T
Vibration
Isolation Pad
Unit Power
Disconnect
High and low
voltage
knockouts
Pressure
Tank
Shut-Off
Va lve
Boiler
Drains
Flow
Regulator
Water In
Water Out
Water
Control
Va lve
Optional
Filter
P/T Plugs
To Thermostat
Figure 13: Typical Open Loop/Well Application
Ground-Water Heat Pump Applications
Flow Regulation
Flow regulation can be accomplished by two methods. One
method of ow regulation involves simply adjusting the ball
valve or water control valve on the discharge line. Measure the
pressure drop through the unit heat exchanger, and determine
ow rate from table 9. Since the pressure is constantly varying,
two pressure gauges may be needed. Adjust the valve until
the desired ow of 1.5 to 2 gpm per ton [2.0 to 2.6 l/m per kW]
is achieved. A second method of ow control requires a ow
control device mounted on the outlet of the water control valve.
The device is typically a brass tting with an orice of rubber or
plastic material that is designed to allow a specied ow rate.
On occasion, ow 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.
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.
⚠ CAUTION! ⚠
CAUTION! Refrigerant pressure activated water regulating
valves should never be used with this equipment.
⚠ WARNING! ⚠
WARNING! Polyolester Oil, commonly known as POE
oil, is a synthetic oil used in many refrigeration systems
including those with HFC-410A refrigerant. POE oil, if it
ever comes in contact with PVC or CPVC piping, may
cause failure of the PVC/CPVC. PVC/CPVC piping should
never be used as supply or return water piping with water
source heat pump products containing HFC-410A as
system failures and property damage may result.

Residential H&V - 60Hz HFC-410A:
Rev: October 5, 2021
18 Geothermal Heating and Cooling
Water Quality Standards
pH - Chilled Water 0.7F°58< to 9.0 7.0 to 9.0 7.0 to 9.0 7.0 to 9.0
pH - Heated Water 0.8F°58> to 10.0 8.0 to 10.0 8.0 to 10.0 8.0 to 10.0
Alkalinity
(
HCO3
)
ppm - CaCO
3
equiv. 50 to 500 50 to 500 50 to 500 50 to 500
Calcium (Ca)ppm <100 <100 <100 <100
Magnesium (Mg)ppm <100 <100 <100 <100
Total Hardness (CaCO3)ppm - CaCO3 equiv. 30 to 150 150 to 450 150 to 450 150 to 450
Langelier Satura�on Index LSI -0.5 to +0.5 -0.5 to +0.5 -0.5 to +0.5 -0.5 to +0.5
Ryznar Stability 5.6ISRxednI to 8.0 6.5 to 8.0 6.5 to 8.0 6.5 to 8.0
Total Dissolved Solids (TDS) ppm - CaCO
3
equiv. <1000 <1000 <1000 <1500
Sulfate (SO
4
2-
)ppm <200 <200 <200 <200
Nitrate(NO
3
-
)001<001<001<001<mpp
Chlorine (free)(Cl) ppm <0.5 <0.5 <0.5 <0.5
Chloride (water < 80°F) ppm <20 <20 <150 <150
Chloride (water > 120°F) ppm <20 <20 <125 <125
Hydrogen Sulfide
α
(H
2
S) 5.0<5.0<5.0<5.0<bpp
Carbon Dioxide (CO
2
)ppm 0 <50 10 to 50 10 to 50
Iron Oxide (Fe) ppm <1.0 <1.0 <1.0 <0.2
Manganese (Mn)ppm < 0.4 <0.4 <0.4 <0.4
Ammonia (NH
3
)ppm <0.05 <0.1 <0.1 <0.1
Chloramine (NH
2
CL) ppm 0 0 0 0
Iron 0000Lm/sllecairetcaB
Slime Forming 0000Lm/sllecairetcaB
Sulfate reducing 0000Lm/sllecairetcab
Suspended Solids
β
01<01<01<01<mpp)SST(
Earth Ground Resistance
χ
0smhO Consult NEC & local electrical codes for grounding requirements
Electrolysis Voltage
δ
003<Vm Measure voltage internal water loop to HP ground
Leakage Current
δ
51<Am Measure current in water loop pipe
Building Primary Electrical Ground to unit, must meet local diameter and penetra�on length requirements
CLIMATEMASTER WATER QUALITY STANDARDS
For Closed-Loop and Open-Loop Systems
All Heat Exchanger
Types
COAXIAL HX Copper
Tube in Tube
COAXIAL HX
Cupronickel
Brazed Plate HX
316 SS
Symbol UnitsDescrip�on
Electrolysis
All HX types Scaling Poten�alCorrosion Preven�on
(Cl
-
)
Fouling &
Biological
Do not connect heat pump to steel pipe unless dissimilar materials are separated by using Di-electric unions. Galvanic corrosion of heat
pump water pipe will occur.
Heat Exchanger Type
Closed Loop
Recircula�ng Open Loop, Tower, Ground Source Well
-
Table 3: Water Quality Standards
Clean water is essential to the performance and life span of water source heat pumps. Contaminants, chemicals, and
minerals all have the potential to cause damage to the water heat heat exchanger if not treated properly. All closed
water loop systems should undergo water quality testing and be maintained to the water quality standards listed in
this table.

19
Residential H&V - 60Hz HFC-410A
Rev: October 5, 2021
climatemaster.com
Water Quality Standards
1. The ClimateMaster Water Quality Table provides
water quality requirements for coaxial & brazed
plate heat exchangers.
2. The water must be evaluated by an independent
testing facility comparing site samples against
this Table. When water properties are outside of
these parameters, the water must either be treated
by a professional water treatment specialist to
bring the water quality within the boundaries of
this specication, or an external secondary heat
exchanger must be used to isolate the heat pump
water system from the unsuitable water. Failure
to do so will void the warranty of the heat pump
system and will limit liability for damage caused by
leaks or system failure.
3. Regular sampling, testing and treatment of the
water is necessary to assure that the water quality
remains within acceptable levels thereby allowing
the heat pump to operate at optimum levels.
4. If closed‐loop systems are turned off for extended
periods, water samples must be tested prior to
operating the system.
5. For optimal performance, it is recommended that
the closed‐loop piping systems are initially lled
with de‐ionized water.
6. Well water with chemistry outside of these
boundaries, and salt water or brackish water
requires an external secondary heat exchanger.
Surface/Pond water should not be used.
7. If water temperature is expected to fall below 40°F,
antifreeze is required. Refer to the heat pump IOM
for the correct solution ratios to prevent freezing.
αHydrogen Sulde has an odor of rotten eggs. If
one detects this smell, a test for H2S must be
performed. If H2S is detected above the limit
indicated, remediation is necessary (Consult with
your Water Testing/Treatment Professional) or
a secondary heat exchanger is required using
appropriate materials as recommended by the heat
exchanger supplier.
βSuspended solids and particulates must be ltered
to prevent fouling and failure of heat exchangers.
Strainers or particulate lters must be installed to
provide a maximum particle size of 600 micron
(0.60 mm, 0.023 in.) using a 20 to 30 mesh screen
size. When a loop is installed in areas with ne
material such as sand or clay, further ltration is
required to a maximum of 100 micron. Refer to the
Strainer / Filter Sizing Chart to capture the particle
sizes encountered on the site.
χ An electrical grounding system using a dedicated
ground rod meeting NEC and Local Electrical
codes must be installed. Building Ground must not
be connected the WSHP piping system or other
plumbing pipes.
δ Refer to IOM for instructions on measuring
resistance and leakage currents within water loops.
Do not use PVC pipe for water loop (compressor
POE oil and glycols damage PVC) use of HDPE pipe
is recommended.
Strainer / Filter Sizing
Mesh Size Particle Size
Microns MM Inch
20 840 0.840 0.0340
30 533 0.533 0.0210
60 250 0.250 0.0100
100 149 0.149 0.0060
150 100 0.100 0.0040
200 74 0.074 0.0029
ppm = parts per million
ppb = parts per billion

Residential H&V - 60Hz HFC-410A:
Rev: October 5, 2021
20 Geothermal Heating and Cooling
Water Quality Standards
OHM meter
Measuring Earth Ground Resistance
0.02
Building
Ground Rod
Well Casing
Measure the earth ground bond using an Ohm meter between the building's ground rod and the steel well casing.
The resistance measured should be zero Ohms. The NEC allows a resistance to ground up to 20 Ohms. Any
resistance above zero, indicates a poor earth ground which may be the result of a hot neutral line or that
conduc�ve water is present. Both of these may lead to electrolysis and corrosion of the heat pump piping. A check
for both should be performed and resolved.
Note if the well casing is plas�c, a conduc�ve path can be achieved by inser�ng a #6 AWG bare copper wire into the
well water. Remove the temporary conductor when finished.