ClimateMaster Tranquility TR Series Guide

Tranquility®
High Efficiency
(TR) Series
Models TRH/V 006 - 060
60Hz - HFC-410A
INSTALLATION, OPERATION
& MAINTENANCE
97B0075N08
Revised: November 2, 2020
Table of Contents
Model Nomenclature - General Overview 3
General Information 4
Unit Physical Data 6
Hydronic Heating Physical Data 7
Horizontal Installation 8-9
Field Conversion of Air Discharge 10
Horizontal Installation 11
Vertical Installation 12-13
Piping Installation 14
Water-Loop Heat Pump Applications 15
Ground-Loop Heat Pump Applications 16-17
Ground-Water Heat Pump Applications 18-19
Water Quality Standards 20
Electrical - Line Voltage 21
Electrical Data 22-29
Electrical - Power Wiring 30
Electrical - Power & Low Voltage Wiring 31
Electrical - Low Voltage Wiring 32
Electrical - Thermostat Wiring 33
Blower Performance Data 34-44
Blower Performance Data - Hybrid 45-55
Constant Volume ECM Control 56
TR Series Wiring Diagram Matrix 57
Typical Wiring Diagram 58-63
CXM Controls 64
DXM2 Controls 65-68
Safety Features - CXM and DXM2 Controls 69-70
ClimaDry® Modulating Reheat Option 71-73
Unit Starting and Operating Conditions 74
Piping System Cleaning and Flushing 75
Flushing/Purging Units with ClimaDry®76
Unit and System Checkout 77
Unit Start-Up Procedure 78-79
Unit Operating Conditions 80-84
Preventive Maintenance 85
Functional Troubleshooting 86
Performance Troubleshooting 87
Start-Up Log Sheet 88
Functional Troubleshooting 89
Warranty (U.S. & Canada) 90
Warranty (International) 91
Revision History 96

3
THE SMART SOLUTION FOR ENERGY EFFICIENCY
Tranquility®(TR) Series
Rev.: November 2, 2020
climatemaster.com
TR H A0 3 6 CG 3 0 C L B S
1 2 3 4 5 6 7
8
9 10 11 12 13 14 15
TR = TRANQUILITY®HIGH EFFICIENCY410A
MODELTYPE
H = HORIZONTAL
CONFIGURATION
V = VERTICAL
006 - E,G
UNIT SIZE
009 - E,G
012 - E,G
015 - E,G
018 - E,G
024 - E,G, H, F
030 - E,G,H,F
036 - E,G,H,F
042 - G,H,F,N
048 - G,H,F,N
060 - G,H,F,N
REVISION LEVEL
A= CURRENTREVISION
VOLTAGE
CONTROLS
WATER CIRCUIT OPTIONS
L= LEFTRETURN
RETURN AIR OPTIONS
R = RIGHTRETURN
SUPPLY AIR OPTIONS
S = STANDARD
V = LEFTRETURN, STAINLESS STEELDRAIN PAN
W = RIGHTRETURN, STAINLESS STEELDRAIN PAN
0 = None
2 = HWG (Coil Only)
6 = HWG (Coil Only) w/Auto Flow Regulator 2.5 GPM/Ton
7 = HWG (Coil Only) w/Auto Flow Regulator 3.0 GPM/Ton
8 = Auto Flow Regulator 2.5 GPM/Ton
9 = Auto Flow Regulator 3.0 GPM/Ton
5 = Internal Secondary Pump
DXM2 CONTROLS REQUIRED FOR CLIMADRY OPTION
HYDRONIC HEAT ONLY OFFERED IN HORIZONTAL CONFIGURATION
HEAT EXCHANGER OPTIONS
Standard
Motorized Valve
Hydronic Heat
ClimaDry®
Non Coated Air Coil Tin-plated Air Coil
Copper Cupro-nickel Copper Cupro-nickel
C
T
E
H Y B R
N
S
P
A
U
D
J
W
F
C = CXM
D = DXM2
L= CXM w/LON
M = DXM2 w/LON
N = CXM w/MPC
P= DXM2 w/MPC
w/DISCONNECT
A = CXM
B = DXM2
E= CXM w/LON
K = DXM2 w/LON
R = CXM w/MPC
S= DXM2 w/MPC
G = 208-230/60/1
E = 265/60/1
H = 208-230/60/3
F = 460/60/3
N = 575/60/3
AVAILABLE
VOLTAGES
Option Supply ConfigurationMotor
T
B
Top
Back
TRV
TRH
PSC
PSC
S Straight TRH PSC
V TRV PSC Hi Static
Y TRH
Z TRH
Top
Back
Straight
K TRV
TRV
ECM-CV
P TRH
W
1
2
3
DXM2 Controls Required for ECM-CV Fan Motors
TRH
TRH
TRH
Top
Back
Straight
Straight
Top
Back
PSC Hi Static
PSC Hi Static
ECM-CV
ECM-CV
ECM-CT
ECM-CT
ECM-CT
CABINET INSULATION
OPTION
1
A
J
K
2
C
L
M
3
E
N
P
1” FILTER
RAIL
RANGE ULTRA
QUIET
2” FILTER
RAIL
1” FILTER
FRAME
2” FILTER
FRAME
4
G
R
S
NO
YES
NO
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
Model Nomenclature - General Overview
ClimaDry®Option Notes:
1. Unit must have DXM2 control option. 460 volt unit units require a four wire power supply with neutral.
2. ClimaDry® may not be combined with motorized water valve, internal secondary circulating pump, or automatic ow
regulator options.
3. Unit minimum entering air temperature while in the dehumidication, cooling, or continuous fan modes is
65ºF DB/55ºF WB. Operation below this minimum may result in nuisance faults.
4. A thermostat with dehumidication mode or thermostat and separate humidistat/dehumidistat is required for
activation and control of ClimaDry®.
5. Sizes 006, 009, 012, 015, 018, downow units and 575 volt units are not eligible for ClimaDry®.
Note: Above model nomenclature is a general reference. Not all congurations are available on all models. Consult selection software for detailed information.

4
CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Tranquility®(TR) Series
Rev.: November 2, 2020
ClimateMaster Water-Source Heat Pumps
General Information
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.
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.
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! 
WARNING! 
WARNING! 
CAUTION! 
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! The EarthPure®Application and Service Manual
should be read and understood before attempting to service
refrigerant circuits with HFC-410A.
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. Ensure 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.
Storage
Pre-Installation
WARNING! 
WARNING! The installation of water-source heat pumps 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.

5
THE SMART SOLUTION FOR ENERGY EFFICIENCY
Tranquility®(TR) Series
Rev.: November 2, 2020
climatemaster.com
CAUTION! All three phase scroll compressors must have
direction of rotation veried at start-up. Verication is
achieved by checking compressor Amp draw. Amp draw
will be substantially lower compared to nameplate values.
Additionally, reverse rotation results in an elevated sound
level compared to correct rotation. Reverse rotation will result
in compressor internal overload trip within several minutes.
Verify compressor type before proceeding.
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.
NOTICE! Failure to remove shipping brackets from
spring-mounted compressors will cause excessive
noise, and could cause component failure due to
added vibration.
CAUTION! 
CAUTION! 
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.
General Information
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 spring vibration isolation until the
compressor rides freely on the springs. Remove
shipping restraints. (No action is required for
compressors with rubber grommets.)
7. Some airow patterns are eld convertible (horizontal
units only). Locate the airow conversion section of
this IOM.
8. Locate and verify any hot water generator (HWG),
hanger, or other accessory kit located in the
compressor section or blower section.

6
CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Tranquility®(TR) Series
Rev.: November 2, 2020
ClimateMaster Water-Source Heat Pumps
TR Series 006 009 012 015 018 024 030 036 042 048 060
Compressor (1 each) Rotary Scroll
Factory Charge HFC-410A
- (oz.) 19 20 23 35 43 40 48 50 70 74 82
ECM Fan Motor & Blower
Blower Wheel Size (Dia x w) 6x5 6x5 6x5 9x7 9x7 9x7 9x7 9x8 9x8 10x10 11x10
PSC Fan Motor & Blower
Fan Motor Type/Speeds PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3
Blower Wheel Size (Dia x W) 5x5 5x5 6x5 8x7 8x7 9x7 9x7 9x8 9x8 10x10 11x10
Water Connection Size
Source FPT 1/2” 1/2” 1/2” 1/2” 1/2” 3/4” 3/4” 3/4” 3/4” 1” 1”
Optional HWG FPT 1/2”
Coax Volume (gallons) 0.123 0.143 0.167 0.286 0.45 0.286 0.323 0.323 0.89 0.738 0.939
Vertical
Air Coil Dimensions (H x W) 10x15 10x15 10x15 20x17.25 20x17.25 20x17.25 20x17.25 24x21.75 24x21.76 28x25 28x25
Filter Standard - 1”
Throwaway 10x18 10x18 10x18 20x20 20x20 20x20 20x20 24x24 24x24 28x28 28x28
Weight - Operating (lbs.) 110 112 121 163 168 184 192 213 228 283 298
Weight - Packaged (lbs.) 115 117 126 168 173 189 197 219 234 290 305
Horizontal
Air Coil Dimensions (H x W) 10x15 10x15 10x15 16x22 16x22 16x22 16x22 20x25 20x25 20x35 20x35
Filter Standard - 1”
Throwaway 10x18 10x18 10x18 16x25 16x25 18x25 18x25 20x28 or 2-20x14
20x28 or
2-20x14
1-20x24,
1-20x14
1-20x24,
1-20x14
Weight - Operating (lbs.) 110 112 121 163 168 184 192 213 228 283 298
Weight - Packaged (lbs.) 115 117 126 168 173 189 197 219 234 290 305
Notes: All units have TXV expansion device and 1/2” & 3/4” electrical knockouts.
575 volt fan motors are two speed.
FPT=Female Pipe Thread
Condensate Drain Connection is 3/4” FPT.
For ClimaDry® option add 30 lbs (13.6 kg).
Unit Maximum Water Working Pressure
Options Max Pressure PSIG [kPa]
Base Unit 500 [3447]
Internal Secondary Pump (ISP) 145 [999]
Internal Motorized Water Valve (MWV) 300 [2,068]
Internal Auto Flow Valve 300 [2,068]
ClimaDry® 145 [999]
Use the lowest maximum pressure rating when multiple options are combined.
Unit Physical Data
Tranquility® (TR) Series (60 Hz)

7
THE SMART SOLUTION FOR ENERGY EFFICIENCY
Tranquility®(TR) Series
Rev.: November 2, 2020
climatemaster.com
Hydronic Heating Physical Data
TR Series 006 009 012 015 018 024 030 036 042 048 060
Compressor (1 each) Rotary Scroll
Factory Charge R410A - (oz.) 17 18.5 23 35 43 43 48 50 70 74 82
ECM - CV Fan Motor & Blower
Fan Motor - Hybrid (hp) [W] 1/8 1/8 1/4 1/3 1/3 1/2 3/4 3/4 3/4 1 1
Blower Wheel Size - Hybrid (Dia x
W) 6x5 6x5 6x5 9x7 9x7 9x7 10X8T 10X8A 10X8A 12X10T 12X10T
ECM - CT Fan Motor & Blower
Fan Motor - Hybrid (hp) [W] 1/4 1/4 1/4 1/3 1/3 1/2 3/4 3/4 3/4 1 1
Blower Wheel Size - Hybrid (Dia x
W) 6x5 6x5 6x5 9x7 9x7 9x7 10X8T 10X8A 10X8A 12X10T 12X10T
Water Connection Size
FPT - All Other 1/2” 1/2” 1/2” 1/2” 1/2” 3/4” 3/4” 3/4” 3/4” 1” 1”
Horizontal
Air Coil Dimensions (H x W) 10x15 10x15 10x15 16x22 16x22 16x22 16x22 20x25 20x25 20x35 20x35
Filter Standard - 1” Throwaway 10x18 10x18 10x18 16x25 16x25 18x25 18x25 20x28 or
2-20x14
20x28 or
2-20x14
1-20x24,
1-20x14
1-20x24,
1-20x14
Weight - Operating - Hybrid (lbs.) 154 156 165 215 221 253 261 309 324 373 405
Weight - Packaged - Hybrid (lbs.) 159 161 170 220 226 258 266 314 329 378 410
Notes: All units have TXV expansion device and 1/2” & 3/4” electrical knockouts.
FPT=Female Pipe Thread
Condensate Drain Connection is 3/4” FPT.
Unit Maximum Water Working Pressure
Options Max Pressure PSIG [kPa]
Base Unit 300 [2068]
Internal Secondary Pump (ISP) 145 [999]
Internal Auto Flow Valve 300 [2,068]
Use the lowest maximum pressure rating when multiple options are combined.

8
CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Tranquility®(TR) Series
Rev.: November 2, 2020
ClimateMaster Water-Source Heat Pumps
Horizontal Installation
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.
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 suf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 dif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 submittal data or engineering design guide for
dimensional data.
In limited side access installations, pre-removal of the
control box side mounting screws will allow control box
removal for future servicing.
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 submittal data. Size the
access opening to accommodate the service technician
during the removal or replacement of the compressor,
control, or blower assembly.
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.
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
Figure 1a:

9
THE SMART SOLUTION FOR ENERGY EFFICIENCY
Tranquility®(TR) Series
Rev.: November 2, 2020
climatemaster.com
Horizontal Installation
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. UV based anti-bacterial systems may damage
e-coated air coils.
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 edificación
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
Water Out
Optional Balancing Valve
Ball Valve with optional
integral P/T plug
Stainless steel braid hose
with integral "J" swivel
Building
Loop
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 Low Pressure Drop Water
Control Valve
(can be internally mounted
on some models)
Notice! Installation Note - Ducted Return: Many
horizontal WSHPs are installed in a return air ceiling
plenum application (above ceiling). Vertical WSHPs are
commonly installed in a mechanical room with free return
(e.g. louvered door). Therefore, lter rails are the industry
standard and are included on ClimateMaster commercial
heat pumps for the purposes of holding the lter only. For
ducted return applications, the lter rail must be removed
and replaced with a duct ange or lter frame. Canvas
or exible connectors should also be used to minimize
vibration between the unit and ductwork.
Figure 2: Horizontal Unit Pitch
1/4” (6.4mm) pitch
toward drain for drainage
Drain Connection

10
CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Tranquility®(TR) Series
Rev.: November 2, 2020
ClimateMaster Water-Source Heat Pumps
Field Conversion of Air Discharge
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
Overview - 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. Re-route 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.
Figure 5: Right Return Side to Back
Figure 4: Left Return Side to Back

11
THE SMART SOLUTION FOR ENERGY EFFICIENCY
Tranquility®(TR) Series
Rev.: November 2, 2020
climatemaster.com
2”
1.5”
1.5”
* 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
Condensate Piping - Horizontal Units - A condensate
drain line must be installed and pitched away for the unit
to allow for proper drainage. This connection must meet all
local plumbing/building codes.
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), ensure 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 [51 mm] of ESP capability requires
2 inches [51 mm] of trap depth). As a general rule, 1-1/2
inch [38 mm] 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.
Horizontal Installation
Figure 6: Horizontal Condensate Connection
CAUTION! Ensure condensate line is pitched toward drain
1/8 inch per ft [11mm per m] of run.
CAUTION! 
Duct System Installation - Proper duct sizing and design
is critical to the performance of the unit. The duct system
should be designed to allow adequate and even airow
through the unit during operation. Air ow through the
unit MUST be at or above the minimum stated airow
for the unit to avoid equipment damage. Duct systems
should be designed for quiet operation. Refer to Figure 3
for horizontal duct system details or Figure 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 may be
adversely affected.
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 submittal data 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 ensure 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.
Condensate Piping
Duct System Installation

12
CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Tranquility®(TR) Series
Rev.: November 2, 2020
ClimateMaster Water-Source Heat Pumps
Vertical Installation
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.
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
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 suf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 dif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 submittal data or engineering design guide
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” [10 mm] to 1/2” [13 mm] 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 submittal data or engineering design guide 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 suf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.
Vertical Unit Location
Notice! Installation Note - Ducted Return: Many
horizontal WSHPs are installed in a return air ceiling
plenum application (above ceiling). Vertical WSHPs are
commonly installed in a mechanical room with free return
(e.g. louvered door). Therefore, lter rails are the industry
standard and are included on ClimateMaster commercial
heat pumps for the purposes of holding the lter only. For
ducted return applications, the lter rail must be removed
and replaced with a duct ange or lter frame. Canvas
or exible connectors should also be used to minimize
vibration between the unit and ductwork.

13
THE SMART SOLUTION FOR ENERGY EFFICIENCY
Tranquility®(TR) Series
Rev.: November 2, 2020
climatemaster.com
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 bafe
as illustrated to reduce line-of sight sound transmitted
through return air grilles.
2. Mount the unit on a rubber or neoprene isolation pad
to minimize vibration transmission to the building
structure.
Return
Air Inlet
Figure 9: Vertical Sound Attenuation
Condensate Piping for Vertical Units - A condensate
line must be installed and pitched away from the unit to
allow for proper drainage. This connection must meet
all local plumbing/building codes. 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 ush or blow out the
condensate drain line. Do not install units with a common
trap and/or vent.
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 Condensate Drain
Figure 10b: Vertical Internal Condensate Trap
Notice! Units with clear plastic drain lines should
have regular maintenance (as required) to avoid
buildup of debris, especially in new construction.

14
CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Tranquility®(TR) Series
Rev.: November 2, 2020
ClimateMaster Water-Source Heat Pumps
Piping Installation
CAUTION! Corrosive system water requires corrosion
resistant ttings and hoses, and may require water treatment.
Table 1: Metal Hose Minimum Bend Radii
Hose Diameter Minimum Bend Radii
1/2" [12.7mm] 2-1/2" [6.4cm]
3/4" [19.1mm] 4" [10.2cm]
1" [25.4mm] 5-1/2" [14cm]
1-1/4" [31.8mm] 6-3/4" [17.1cm]
CAUTION! Do not bend or kink supply lines or hoses.
NOTICE! Do not allow hoses to rest against structural
building components. Compressor vibration may be
transmitted through the hoses to the structure, causing
unnecessary noise complaints.
Figure 11: Supply/Return Hose Kit
CAUTION! 
CAUTION! 
CAUTION! 
Rib Crimped
Length
(2 ft [0.6m] Length Standard)
Swivel
Brass
Fitting
Brass
Fitting
MPT
Reborde Acanalado
Longitud
(Long. Estándar de 2 pies)
Accesorio
Giratorio
de Bronce
Accesorio
de Bronce
MPT
MPT
MPT
Rib Crimped
Length
(0.6m Length Standard)
Swivel
Brass
Fitting
Brass
Fitting
MPT
MPT
CAUTION! Piping must comply with all applicable codes.
Installation of Supply and Return Piping
Follow these piping guidelines.
1. Install a drain valve at the base of each supply and
return riser to facilitate system ushing.
2. Install shut-off / balancing valves and unions at each
unit to permit unit removal for servicing.
3. Place strainers at the inlet of each system circulating
pump.
4. Select the proper hose length to allow slack between
connection points. Hoses may vary in length by +2%
to -4% under pressure.
5. Refer to Table 1. Do not exceed the minimum bend
radius for the hose selected. Exceeding the minimum
bend radius may cause the hose to collapse, which
reduces water ow rate. Install an angle adapter to
avoid sharp bends in the hose when the radius falls
below the required minimum.
Insulation is not required on loop water piping except
where the piping runs through unheated areas, outside
the building or when the loop water temperature is below
the minimum expected dew point of the pipe ambient
conditions. Insulation is required if loop water temperature
drops below the dew point (insulation is required for
ground loop applications in most climates).
Pipe joint compound is not necessary when Teon®
thread tape is pre-applied to hose assemblies or when
ared-end connections are used. If pipe joint compound
is preferred, use compound only in small amounts on
the external pipe threads of the tting adapters. Prevent
sealant from reaching the ared surfaces of the joint.
Note: When antifreeze is used in the loop, ensure that
it is compatible with the Teon®tape or pipe joint com-
pound that is applied.
Maximum allowable torque for brass ttings is 30 ft-lbs
[41 N-m]. If a torque wrench is not available, tighten
nger-tight plus one quarter turn. Tighten steel ttings
as necessary.
Optional pressure-rated hose assemblies designed
specically for use with ClimateMaster units are available.
Similar hoses can be obtained from alternate suppliers.
Supply and return hoses are tted with swivel-joint
ttings at one end to prevent kinking during installation.
Refer to Figure 11 for an illustration of a typical supply/
return hose kit. Adapters secure hose assemblies to the
unit and risers. Install hose assemblies properly and check
regularly to avoid system failure and reduced service life.
Installer Caution: After making water connections on
units equipped with ClimaDry®, ensure the three union
nuts on the internal three-way water valve are tight.
ClimaDry equipped units have a manual air bleed valve at
the top of the reheat coil. This valve must be used to bleed
the air from the reheat coil after lling the system, for the
ClimaDry to operate properly.
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.
WARNING!

15
THE SMART SOLUTION FOR ENERGY EFFICIENCY
Tranquility®(TR) Series
Rev.: November 2, 2020
climatemaster.com
Water-Loop Heat Pump Applications
Commercial Water Loop Applications
Commercial systems typically include a number of units
connected to a common piping system. Any unit plumbing
maintenance work can introduce air into the piping system;
therefore air elimination equipment is a major portion of the
mechanical room plumbing. Consideration should be given
to insulating the piping surfaces to avoid condensation.
ClimateMaster recommends unit insulation any time the
water temperature is expected to be below 60ºF (15.6ºC).
Metal to plastic threaded joints should never be used due to
their tendency to leak over time.
Teon®tape thread sealant is recommended to minimize
internal fouling of the heat exchanger. Do not over tighten
connections and route piping so as not to interfere with
service or maintenance access. Hose kits are available
from ClimateMaster in different congurations as shown in
Figure 12 for connection between the unit and the piping
system. Depending upon selection, hose kits may include
shut off valves, P/T plugs for performance measurement,
high pressure stainless steel braided hose, “Y” type strainer
with blow down valve, and/or “J” type swivel connection.
Balancing valves and an external low pressure drop solenoid
valve for use in variable speed pumping systems may also be
included in the hose kit.
The piping system should be ushed to remove dirt, piping
chips, and other foreign material prior to operation (see
“Piping System Cleaning and Flushing Procedures” in this
manual). The ow rate is usually set between 2.25 and 3.5
gpm per ton [2.9 and 4.5 l/m per kW] of cooling capacity.
ClimateMaster recommends 3 gpm per ton [3.9 l/m per kW]
for most applications of water loop heat pumps. To ensure
proper maintenance and servicing, P/T ports are imperative
for temperature and ow verication, as well as performance
checks.
Water loop heat pump (cooling tower/boiler) systems
typically utilize a common loop, maintained between
60 - 90°F [16 - 32°C]. The use of a closed circuit evaporative
cooling tower with a secondary heat exchanger between the
tower and the water loop is recommended. If an open type
cooling tower is used continuously, chemical treatment and
ltering will be necessary.
Figure 12: Typical Water-Loop Application
3/8" [10mm] threaded rods
(by others)
Low Water Temperature Cutout Setting - CXM Control
When antifreeze is selected, the LT1 jumper (JW3) should be clipped to select the low temperature (antifreeze 10.0°F
[-12.2°C]) setpoint and avoid nuisance faults (see “Low Water Temperature Cutout Selection” in this manual). Note: Low
water temperature operation requires extended range equipment.

16
CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Tranquility®(TR) Series
Rev.: November 2, 2020
ClimateMaster Water-Source Heat Pumps
Ground-Loop Heat Pump Applications
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 13. 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 [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
Upon completion of system installation and testing, ush
the system to remove all foreign objects and purge to
remove all air.
Antifreeze
I n 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 ofce should be consulted to determine
the antifreeze best suited to your area. Freeze 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 22 to 25°F [-6 to
-4°C] and freeze 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.
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.
Table 2: Antifreeze Percentages by Volume
Low Water Temperature Cutout Setting - CXM Control
When antifreeze is selected, the LT1 jumper (JW3) should
be clipped to select the low temperature (antifreeze 10.0°F
[-12.2°C]) setpoint and avoid nuisance faults (see “Low
Water Temperature Cutout Selection” in this manual). Note:
Low water temperature operation requires extended
range equipment.
CAUTION! 
CAUTION! 
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
100% USP food grade Propylene Glycol
Ethanol*
25%
38%
29%
21%
25%
25%
16%
22%
20%
10%
15%
14%
* Must not be denatured with any petroleum based product
CAUTION! Ground loop applications require extended range
equipment and optional refrigerant/water circuit insulation.

17
THE SMART SOLUTION FOR ENERGY EFFICIENCY
Tranquility®(TR) Series
Rev.: November 2, 2020
climatemaster.com
Ground-Loop Heat Pump Applications
Figure 13: Typical Ground-Loop Application
High and
Low Voltage
Knockouts
Vibration Isolation Pad
To Thermostat

18
CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Tranquility®(TR) Series
Rev.: November 2, 2020
ClimateMaster Water-Source Heat Pumps
Ground-Water Heat Pump Applications
Open Loop - Ground Water Systems - Typical open loop
piping is shown in Figure 14. 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 ushing of the
heat exchanger. Shut off 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 materials should
be limited to copper, PE, or similar material. PVC or CPVC
should never be used as they are incompatible with the
POE oils used in HFC-410A products and piping system
failure and property damage may result.
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.
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.
WARNING! 
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.
Expansion Tank and Pump - Use a closed, bladder-
type expansion tank to minimize mineral formation due
to air exposure. The expansion 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.
Water Control Valve - Note the placement of the
water control valve in Figure 14. 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. Ensure 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 19).
Note the special wiring diagrams for slow closing valves
(Figures 20 & 21).

19
THE SMART SOLUTION FOR ENERGY EFFICIENCY
Tranquility®(TR) Series
Rev.: November 2, 2020
climatemaster.com
Figure 14: Typical Open Loop/Well Application
Tanque de
Presión
Válvula
de Retención
Drenajes
de Caldera
Regulador
de Flujo
Entrada
de Agua
Salida de Agua
Válvula
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
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], 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] LT1 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.

20
CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Tranquility®(TR) Series
Rev.: November 2, 2020
ClimateMaster Water-Source Heat Pumps
Water Quality Standards
Table 3: Water Quality Standards
Water Quality
Parameter
HX
Material
Closed
Recirculating Open Loop and Recirculating Well
Scaling Potential - Primary Measurement
pH/Calcium Hardness All -pH < 7.5 and Ca Hardness <100ppm
Method
Index Limits for Probable Scaling Situations - (Operation outside these limits is not recommended)
Ryznar All -6.0 - 7.5
Stability Index If >7.5 minimize steel pipe use.
Langelier All --0.5 to +0.5
Saturation Index If <-0.5 minimize steel pipe use. Based upon 66°C HWG and
Direct well, 29°C Indirect Well HX
Iron Fouling
Iron Fe 2+ (Ferrous) All -<0.2 ppm (Ferrous)
(Bacterial Iron potential) If Fe2+
(ferrous)>0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria.
Iron Fouling All -<0.5 ppm of Oxygen
Above this level deposition will occur .
Corrosion Prevention
pH All
6 - 8.5 6 - 8.5
Monitor/treat as
needed Minimize steel pipe below 7 and no open tanks with pH <8
Hydrogen Sulfide (H2S) All
-<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.
Ammonia ion as hydroxide, chloride,
nitrate and sulfate compounds All -<0.5 ppm
Maximum
Maximum Allowable at maximum water temperature.
Chloride Levels
10°C 24°C 38 C
Copper
Cupronickel
-<20ppm NR NR
-<150 ppm NR NR
304 SS-<400 ppm <250 ppm <150 ppm
316 SS-<1000 ppm <550 ppm < 375 ppm
Titanium ->1000 ppm >550 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.
Notes:
• NR - Application not recommended.
• "-" No design Maximum.
• Closed Recirculating system is identified by a closed pressurized piping system.
• Recirculating open wells should observe the open recirculating design considerations.
Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below
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.
The ClimateMaster Water Quality Table provides water quality requirements for ClimateMaster coaxial heat exchangers. The water should be evaluated by an
independent testing facility comparing to this Table and when properties are outside of these 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 and any other components
damaged by a leak.