ClimateMaster Genesis Standard (GR) Series Guide

Genesis Standard
(GR) Series
Commercial Horizontal &
Vertical Packaged
Water-Source Heat Pumps
Installation, Operation &
Maintenance Instructions
50Hz
97B0076N01
Revised: 9 August, 2011
Table of Contents
Model Nomenclature 3
General Information 4
Unit Physical Data 6
Horizontal Installation 7
Field Conversion of Air Discharge 9
Horizontal Installation 10
Duct System Installation 11
Vertical Installation 12
Piping Installation 14
Water Loop Heat Pump Applications 15
Ground Loop Heat Pump Applications 16
Ground Water Heat Pump Applications 17
GroundWater Heat Pump Applications 18
Water Quality Standards 19
Electrical - Line Voltage 20
Electrical - Power Wiring 22
Electrical - Power & Low Voltage Wiring 23
Electrical - Low Voltage Wiring 24
Typical Wiring Diagram - Units with CXM Board
(Single Phase) 26
Typical Wiring Diagram - Units with DXM Board
(Single Phase) 27
Typical Wiring Diagram - Units with CXM Board
and LON Controller (Three Phase) 28
CXM Controls 29
DXM Controls 30
Safety Features 32
CXM and DXM Controls 33
Unit Starting and Operating Conditions 34
Piping System Cleaning and Flushing 35
Unit Starting and Operating Conditions 36
Unit Start-Up Procedure 37
Unit Operating Conditions 38
Preventive Maintenance 39
Functional Troubleshooting 40
Performance Troubleshooting 41
Functional Troubleshooting - S-I Units 42
International Warranty 43
Revision History 44

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
2ClimateMaster Water-Source Heat Pumps
Genesis GR Series
Revised: 9 August, 2011
This Page Intentionally Left Blank

Genesis GR Series
Revised: 9 August, 2011
THE SMART SOLUTION FOR ENERGY EFFICIENCY
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Model Nomenclature
NOTE: Above model nomenclature is a general reference. Consult individual engineering guides for
detailed information.
A0 2 4 CG 1 0 C L T
4 5 6 7
8
91011121314
Unit Size, MBtuh
Return Air
Voltage
Controls
Revision Level
Heat Exchanger & Valve Options
See model nomenclature for specific options
Cabinet Insulation
GR
1 2
Model Type
V
3
V = Vertical Upflow
Configuration
See model nomenclature for specific options
L = Left Return
R = Right Return
See model nomenclature for specific options
Water Circuit Options
S
15
S = Standard
Standard
H = Horizontal
Supply Air & Motor Option
Rev.: 7/1/10
GR = Genesis High Efficiency
See model nomenclature for specific options
NOTE: Some options/configurations not availaible on all series. Please consult Engineering Guides for model specific options.
CE Mark
CXM DXM
F
H
G
J
Standard
LON DDC
MPC DDC T U
T = 220-240/50/1 - R407C
S = 380-420/50/3 - R407C

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
4ClimateMaster Water-Source Heat Pumps
Genesis GR Series
Revised: 9 August, 2011
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. 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 filed within 15 days, the
freight company can deny the claim without recourse.
Note: It is the responsibility of the purchaser to file
all necessary claims with the carrier. Notify your
equipment supplier of all damage within fifteen (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, fittings, and valves before installing
any of the system components. Remove any dirt or
debris found in or on these components.
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 will quickly become clogged with construction dirt
and debris, which may cause system damage.
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: Notification 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.

Genesis GR Series
Revised: 9 August, 2011
THE SMART SOLUTION FOR ENERGY EFFICIENCY
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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.
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
configurations 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 finished.
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 airflow patterns are field convertible
(horizontal units only). Locate the airflow 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.

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
6ClimateMaster Water-Source Heat Pumps
Genesis GR Series
Revised: 9 August, 2011
Unit Physical Data
Genesis Standard (GR) Series
Model 006 009 012 015 019 024 030 036 042 048 060
Compressor (1 Each) Rotary Reciprocating Scroll
Factory Charge R-407c (kg) 50Hz Only
0.34 0.37 0.37 0.68 0.88 0.91 1.19 1.36 1.19 1.59 2.41
PSC Fan Motor & Blower (3 Speeds)
Fan Motor - Watts 30 75 75 124 150 250 373 560 560 560 746
Blower Wheel Size (dia x w) - mm
127 x 127 127 x 127 152 x 127 229 x 178 229 x 178 229 x 178 229 x 178 1 254 x 254 254 x 254 254 x 254 279 x 254
Water Connection Size
FPT (in) 1/2 1/2 1/2 3/4 3/4 3/4 3/4 3/4 1 1 1
Coax Volume
Volume liters 0.47 0.54 0.63 1.08 1.70 1.70 2.12 2.88 2.88 3.48 3.48
Vertical Upow
Air Coil Dimensions (h x w) - mm N/A
254 x 406 254 x 406 406 x 406 406 x 406 406 x 406 508 x 508 508 x 508 711 x 508 711 x 508 711 x 635
Standard Filter - 25.4mm
Throwaway, qty mm
N/A 254 x 508 254 x 508 406 x 508 406 x 508 406 x 508 508 x 610 508 x 610 711 x 610 711 x 610 711 x 762
Horizontal
Air Coil Dimensions (h x w) - mm
254 x 406 254 x 406 254 x 406 406 x 406 406 x 406 406 x 406 457 x 559 457 x 559 457 x 787 457 x 787 508 x 889
Standard Filter - [25.4mm]
Throwaway, qty mm
254 x 508 254 x 508 254 x 508 406 x 508 406 x 508 406 x 508 457 x 610 457 x 610 457 x 457 457 x 457 1=305 x 508,
1=635 x 508
Weight - Operating, kg 50 51 55 67 77 88 100 104 117 121 147
Weight - Packaged, kg 55 56 60 72 82 93 105 110 124 127 254
FPT - Female Pipe Thread
Condensate Drain Connection - 3/4” FPT
Unit Maximum Water Working Pressure
Options Max Pressure [kPa]
Base Unit 2,068
Internal Motorized Water Valve (MWV)
2,068
Internal Auto Flow Valve
2,068
Use the lowest maximum pressure rating when multiple options are combined.

Genesis GR Series
Revised: 9 August, 2011
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Horizontal Installation
Mounting Horizontal Units
Horizontal units have hanger kits pre-installed from the
factory as shown in figure 1. Figure 3 shows a typical
horizontal unit installation.
Horizontal heat pumps are typically suspended above
a ceiling or within a soffit using field supplied, threaded
rods sized to support the weight of the unit.
Use four (4) field supplied threaded rods and factory
provided vibration isolators to suspend the unit. Hang
the unit clear of the floor slab above and support the
unit by the mounting bracket assemblies only. DO NOT
attach the unit flush with the floor slab above.
Pitch the unit toward the drain as shown in Figure 2
to improve the condensate drainage. On small units
(less than 8.8 kW) ensure that unit pitch does not cause
condensate leaks inside the cabinet.
Figure 1: Hanger Bracket
Figure 2: Horizontal Unit Pitch
10mm Threaded
Rod (by others)
Vibration Isolator
(factory supplied)
Washer
(by others)
Double Hex Nuts
(by others)
Varilla Roscada de 3/8"
(fabricada por terceros)
Arandela
(fabricada por terceros)
Tuercas Hexagonales
Dobles (por terceros)
Instale los Tornillos como
se Indica en el Diagrama
La longitud de este tornillo
debe ser de solamente 1/2” para evitar daños
Aislador de Vibraciones
(para codificación por color y
notas de instalación, consulte
las instrucciones de
instalación del soport
e colgador)
6.4mm pitch
for drainage
Drain
Connection
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. Horizon-
tal units are typically installed above a false ceiling or in
a ceiling plenum. Never install units in areas subject to
freezing or where humidity levels could cause cabinet
condensation (such as unconditioned spaces subject
to 100% outside air). Consideration should be given to
access for easy removal of the filter and access panels.
Provide sufficient room to make water, electrical, and
duct connection(s).
If the unit is located in a confined space, such as a closet,
provisions must be made for return air to freely enter the
space by means of a louvered door, etc. Any access panel
screws that would be difficult to remove after the unit
is installed should be removed prior to setting the unit.
Refer to Figure 3 for an illustration of a typical installation.
Refer to unit 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 specific series and model in
unit submittal data. Size the access opening to
accommodate the service technician during the
removal or replacement of the compressor and the
removal or installation of the unit itself.
2. Provide access to hanger brackets, water valves
and fittings. Provide screwdriver clearance to
access panels, discharge collars and all electrical
connections.
3. DO NOT obstruct the space beneath the unit
with piping, electrical cables and other items that
prohibit future removal of components or the unit
itself.
4. Use a manual portable jack/lift to lift and support
the weight of the unit during installation and
servicing.
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 jurisdic-
tion and MUST conform to all applicable codes. It is
the responsibility of the installing contractor to deter-
mine and comply with ALL applicable codes and
regulations.

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
8ClimateMaster Water-Source Heat Pumps
Genesis GR Series
Revised: 9 August, 2011
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
coated air coils.
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, filter rails are the
industry standard and are included on ClimateMaster
commercial heat pumps for the purposes of holding
the filter only. For ducted return applications, the filter
rail must be removed and replaced with a duct flange
or filter rack. Canvas or flexible connectors should also
be used to minimize vibration between the unit and
ductwork.
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)

Genesis GR Series
Revised: 9 August, 2011
THE SMART SOLUTION FOR ENERGY EFFICIENCY
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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
Descarga Posterior
Water
Connection End
Supply Duct
Return Air
Water
Connection End
Drain
Return Air
Discharge Air
Side Discharge
Back Discharge
Overview - Horizontal units can be field converted
between side (straight) and back (end) discharge using
the instructions below.
Note: It is not possible to field convert return air
between left or right return models due to the
necessity of refrigeration copper piping changes.
Preparation - It is best to field convert the unit on the
ground before hanging. If the unit is already hung it
should be taken down for the field conversion.
Side 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 field convert
return air between left or right return models due to
the necessity of refrigeration copper piping changes.
However, the conversion process of side to back or
back to side discharge for either right or left return
configuration is the same. In some cases, it may be
possible to rotate the entire unit 180 degrees if the
return air connection needs to be on the opposite side.
Note that rotating the unit will move the piping to
the other end of the unit.
Figure 5: Right Return Side to Back
Figure 4: Left Return Side to Back

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
10 ClimateMaster Water-Source Heat Pumps
Genesis GR Series
Revised: 9 August, 2011
Horizontal Installation
*3/4" FPT
Trap Depth
38mm
Min
38mm
21mm per m
drain slope
3/4" PVC or
Copper by others
Rev.: 7/30/10
Vent
* Some units include a painted drain
connection. Using a threaded pipe or
similar device to clear any excess paint
accumulated inside this fitting may
ease final drain line installation.
Figure 6: Horizontal Condensate Connection
CAUTION! Ensure condensate line is pitched toward
drain 21mm per m of run.
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 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 51mm of ESP capability
requires 51mm of trap depth). As a general rule, 38mm
trap depth is the minimum.
Each unit must be installed with its own individual trap
and connection to the condensate line (main) or riser.
Provide a means to flush or blow out the condensate line.
DO NOT install units with a common trap and/or vent.
Always vent the condensate line when dirt or air
can collect in the line or a long horizontal drain line
is required. Also vent when large units are working
against higher external static pressure than other units
connected to the same condensate main since this may
cause poor drainage for all units on the line. WHEN A
VENT IS INSTALLED IN THE DRAIN LINE, IT MUST BE
LOCATED AFTER THE TRAP IN THE DIRECTION OF
THE CONDENSATE FLOW.
CAUTION! 

Genesis GR Series
Revised: 9 August, 2011
THE SMART SOLUTION FOR ENERGY EFFICIENCY
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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 airflow through the unit during operation.
Air flow through the unit MUST be at or above the
minimum stated airflow 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
flexible connector is recommended for both discharge
and return air duct connections on metal duct systems
to eliminate the transfer of vibration to the duct
system. To maximize sound attenuation of the unit
blower, the supply and return plenums should include
internal fiberglass duct liner or be constructed from
ductboard for the first few feet. Application of the unit
to uninsulated ductwork in an unconditioned space is
not recommended, as the unit’s performance 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 flow
is a problem, the blower speed can be changed. For
airflow charts, consult submittal data for the series and
model of the specific unit.
If the unit is connected to existing ductwork, a
previous check should have been made to ensure that
the ductwork has the capacity to handle the airflow
required for the unit. If ducting is too small, as in the
replacement of a heating only system, larger ductwork
should be installed. All existing ductwork should be
checked for leaks and repaired as necessary.
Duct System Installation

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
12 ClimateMaster Water-Source Heat Pumps
Genesis GR Series
Revised: 9 August, 2011
Vertical Installation
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
Flexible canvas duct
connector to reduce
noise and vibration
Use turning vanes in
supply transition
Internally insulate supply
duct for first 1.2m each
way to reduce noise
Internally insulate return
transition duct to reduce
noise
Rounded return
transition
Rev.: 6/2/09S
Rev.: 6/2/09S
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 filter
and access panels. Provide sufficient room to make
water, electrical, and duct connection(s).
If the unit is located in a confined space, such as a
closet, provisions must be made for return air to freely
enter the space by means of a louvered door, etc. Any
access panel screws that would be difficult to remove
after the unit is installed should be removed prior to
setting the unit. Refer to Figures 7 and 8 for typical
installation illustrations. Refer to unit 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 10mm to 13mm in
thickness. Extend the pad beyond all four edges of
the unit.
2. Provide adequate clearance for filter replacement
and drain pan cleaning. Do not block filter access
with piping, conduit or other materials. Refer to
unit 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
sufficient to allow removal of the unit, if necessary.
5. In limited side access installations, pre-removal of
the control box side mounting screws will allow
control box removal for future servicing.
6. Provide access to water valves and fittings and
screwdriver access to the unit side panels, discharge
collar and all electrical connections.

Genesis GR Series
Revised: 9 August, 2011
THE SMART SOLUTION FOR ENERGY EFFICIENCY
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Sound Attenuation for Vertical Units - Sound
attenuation is achieved by enclosing the unit within a
small mechanical room or a closet. Additional measures
for sound control include the following:
1. Mount the unit so that the return air inlet is 90° to
the return air grille. Refer to Figure 9. Install a sound
baffle as illustrated to reduce line-of sight sound
transmitted through return air grilles.
2. Mount the unit on a rubber or neoprene isolation
pad to minimize vibration transmission to the
building structure.
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 flush
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
21mm per m
* Some units include a painted drain connection. Using a
threaded pipe or similar device to clear any excess paint
accumulated inside this fitting may ease final drain line installation.
Figure 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.

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
14 ClimateMaster Water-Source Heat Pumps
Genesis GR Series
Revised: 9 August, 2011
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-a1/2" [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 flushing.
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 flow 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 Teflon®
thread tape is pre-applied to hose assemblies or
when flared-end connections are used. If pipe joint
compound is preferred, use compound only in small
amounts on the external pipe threads of the fitting
adapters. Prevent sealant from reaching the flared
surfaces of the joint.
Note: When anti-freeze is used in the loop, insure
that it is compatible with the Teflon tape or pipe
joint compound that is applied.
Maximum allowable torque for brass fittings is 41 N-m.
If a torque wrench is not available, tighten finger-tight
plus one quarter turn. Tighten steel fittings
as necessary.
Optional pressure-rated hose assemblies designed
specifically for use with ClimateMaster units are
available. Similar hoses can be obtained from alternate
suppliers. Supply and return hoses are fitted with
swivel-joint fittings 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.

Genesis GR Series
Revised: 9 August, 2011
THE SMART SOLUTION FOR ENERGY EFFICIENCY
15
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. In
piping systems expected to utilize water temperatures
below 50°F [10°C], 1/2” (13mm) closed cell insulation
is required on all piping surfaces to eliminate
condensation (extended range units required). Metal
to plastic threaded joints should never be used due to
their tendency to leak over time. All commercial class
units include water connections, which do not require a
backup wrench.
Teflon® 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
configurations 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 may also
be included in the hose kit.
The piping system should be flushed to remove dirt,
piping chips, and other foreign material prior to
operation (see “Piping System Cleaning and Flushing
Procedures” in this manual). The flow rate is usually set
between 2.9 and 4.5 l/m per kW of cooling capacity.
ClimateMaster recommends 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 flow verification, as well
as performance checks.
Water loop heat pump (cooling tower/boiler)
systems typically utilize a common loop, maintained
between 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 filtering will be
necessary.
Figure 12: Typical Water-Loop Application
Low Water Temperature Cutout Setting
CXM - When antifreeze is selected, the FP1 jumper
(JW3) should be clipped to select the low temperature
(antifreeze -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.
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)

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
16 ClimateMaster Water-Source Heat Pumps
Genesis GR Series
Revised: 9 August, 2011
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 fittings should
not be used at any time due to their tendency to
corrode. All plastic to metal threaded fittings should be
avoided due to their potential to leak in earth coupled
applications. A flanged fitting should be substituted.
P/T plugs should be used so that flow can be measured
using the pressure drop of the unit heat exchanger.
Earth loop temperatures can range between -4 to 43°C.
Flow rates between 2.41 to 3.23 l/m per kW of cooling
capacity is recommended in these applications.
Test individual horizontal loop circuits before backfilling.
Test vertical U-bends and pond loop assemblies prior to
installation. Pressures of at least 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,
flush the system to remove all foreign objects and
purge to remove all air.
Antifreeze
In areas where minimum entering loop temperatures
drop below 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 office should be consulted
to determine the antifreeze best suited to your area.
Freeze protection should be maintained to 9°C below
the lowest expected entering loop temperature. For
example, if -1°C is the minimum expected entering
loop temperature, the leaving loop temperature would
be -4 to -6°C and freeze protection should be at -10°C.
Calculation is as follows: -1°C - 9°C = -10°C.
All alcohols should be premixed and pumped from
a reservoir outside of the building when possible or
introduced under the water level to prevent fumes.
Calculate the total volume of fluid in the piping system.
Then use the percentage by volume shown in table
2 for the amount of antifreeze needed. Antifreeze
concentration should be checked from a well mixed
sample using a hydrometer to measure specific gravity.
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
CAUTION!
CAUTION!
Type Minimum Temperature for Low Temperature Protection
-12.2°C -9.4°C -6.7°C -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.
Low Water Temperature Cutout Setting
CXM - When antifreeze is selected, the FP1 jumper
(JW3) should be clipped to select the low temperature
(antifreeze -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.

Genesis GR Series
Revised: 9 August, 2011
THE SMART SOLUTION FOR ENERGY EFFICIENCY
17
climatemaster.com
Figure 13: Typical Ground-Loop Application
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 flushing of the heat exchanger. Shut off
valves should be positioned to allow flow through the
coax via the boiler drains without allowing flow into
the piping system. P/T plugs should be used so that
pressure drop and temperature can be measured.
Piping materials should be limited to copper or PVC
SCH80. Note: Due to the pressure and temperature
extremes, PVC SCH40 is not recommended.
Water quantity should be plentiful and of good quality.
Consult table 3 for water quality guidelines. The
unit can be ordered with either a copper or cupro-
nickel water heat exchanger. Consult Table 3 for
recommendations. Copper is recommended for closed
loop systems and open loop ground water systems
that are not high in mineral content or corrosiveness.
In conditions anticipating heavy scale formation or
in brackish water, a cupro-nickel heat exchanger is
recommended. In ground water situations where
scaling could be heavy or where biological growth
such as iron bacteria will be present, an open loop
system is not recommended. Heat exchanger coils
may over time lose heat exchange capabilities due
to build up of mineral deposits. Heat exchangers
must only be serviced by a qualified technician, as
acid and special pumping equipment is required.
Desuperheater coils can likewise become scaled and
possibly plugged. In areas with extremely hard water,
the owner should be informed that the heat exchanger
may require occasional acid flushing. In some cases,
the desuperheater option should not be recommended
due to hard water conditions and additional
maintenance required.
Water Quality Standards
Table 3 should be consulted for water quality
requirements. Scaling potential should be assessed
using the pH/Calcium hardness method. If the pH
<7.5 and the calcium hardness is less than 100 ppm,
scaling potential is low. If this method yields numbers
out of range of those listed, the Ryznar Stability and
Langelier Saturation indecies should be calculated.
Use the appropriate scaling surface temperature for
the application, 66°C for direct use (well water/open
loop) and DHW (desuperheater); 32°C 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.
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)

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
18 ClimateMaster Water-Source Heat Pumps
Genesis GR Series
Revised: 9 August, 2011
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
Air Pad or
Extruded
polystyrene
insulation board
Unit Power
Disconnect
Thermostat
Wiring
Pressure
Tank
Shut-Off
Va lve
Boiler
Drains
Flow
Regulator
Water In
Water Out
Water
Control
Va lve
Optional
Filter
P/T Plugs
Ground-Water Heat Pump Applications
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 field, adjacent stream or pond,
etc.). Most local codes forbid the use of sanitary sewer
for disposal. Consult your local building and zoning
department to assure compliance in your area.
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. 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 21). Note the special wiring diagrams
for slow closing valves (Figures 22 & 23).
Flow Regulation
Flow regulation can be accomplished by two methods.
One method of flow 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 flow rate from Tables 8a
through 8e. Since the pressure is constantly varying, two
pressure gauges may be needed. Adjust the valve until
the desired flow of 2.0 to 2.6 l/m per kW is achieved. A
second method of flow control requires a flow control
device mounted on the outlet of the water control valve.
The device is typically a brass fitting with an orifice of
rubber or plastic material that is designed to allow a
specified flow rate. On occasion, flow control devices
may produce velocity noise that can be reduced by
applying some back pressure from the ball valve located
on the discharge line. Slightly closing the valve will
spread the pressure drop over both devices, lessening
the velocity noise. NOTE: When EWT is below 50°F
[10°C], 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.

Genesis GR Series
Revised: 9 August, 2011
THE SMART SOLUTION FOR ENERGY EFFICIENCY
19
climatemaster.com
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: Rev.: 4/6/2011
• 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.

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
20 ClimateMaster Water-Source Heat Pumps
Genesis GR Series
Revised: 9 August, 2011
Electrical - Line Voltage
Electrical - Line Voltage - All field installed wiring,
including electrical ground, must comply with the
National Electrical Code as well as all applicable local
codes. Refer to the unit electrical data for fuse sizes.
Consult wiring diagram for field connections that must
be made by the installing (or electrical) contractor. All
final electrical connections must be made with a length
of flexible conduit to minimize vibration and sound
transmission to the building.
General Line Voltage Wiring - Be sure the available
power is the same voltage and phase shown on the unit
serial plate. Line and low voltage wiring must be done
in accordance with local codes or the National Electric
Code, whichever is applicable.
WARNING! To avoid possible injury or death due to
electrical shock, open the power supply disconnect switch
and secure it in an open position during installation.
CAUTION! Use only copper conductors for eld installed
electrical wiring. Unit terminals are not designed to accept
other types of conductors.
WARNING!
CAUTION!
Transformer
On dual voltage units the installer must confirm that
the power supply and unit transformer wiring match.
Installer must rewire as needed. Refer to the unit wiring
diagram for proper connections.