Catalog 1112-2
Enfinity™ Large Horizontal Water Source Heat Pumps
with R-410A Refrigerant
Horizontal Models CCH Standard Range & CCW Geothermal Range
Unit Sizes 072 – 120 (6 to 10 Tons) • R-410A Refrigerant
Engineered for exibility and performance™
Table of Contents
Introduction
........................................................................3
Nomenclature.....................................................................3
Features & Options ............................................................4-5
Control Features
Control Features ............................................................6
.................................................................6-9
MicroTech III Controller ..................................................7
I/O Expansion Module ....................................................8
MicroTech III Controller with Communication Module ....9
Applications ....................................................................10-14
Unit Location ................................................................10
Ductwork & Attenuation ................................................11
Typical Cooling and Heating Refrigeration Cycles .......12
Systems ..................................................................13-14
I
SO Performance Data .....................................................15
Water Loop ...................................................................15
Ground Loop ................................................................15
Ground Source .............................................................15
Heating & Cooling Capacity Data
Large Horizontal Unit .................................................16-21
Cooling Size 072 @ 2400 SCFM .................................16
Heating Size 072 @ 2400 SCFM .................................17
Cooling Size 096 @ 3000 SCFM .................................18
Heating Size 096 @ 3000 SCFM .................................19
Cooling Size 120 @ 4000 SCFM .................................20
Heating Size 120 @ 4000 SCFM .................................21
Operating Limits
Correction Factors
..............................................................23
..........................................................24
Airow Correction Factors ............................................24
Anitfreeze Correction Factors ......................................24
Performance Data - Fan Curves .....................................25
Size 072, 096 & 120 .....................................................25
Dimensional Data .......................................................26-28
Size 072 .......................................................................26
Size 096 .......................................................................27
Size 120 .......................................................................28
Accessories ................................................................29-34
Hanger Brackets ..........................................................29
Supply and Return Hoses ............................................29
Condensate Hose Kit ...................................................29
Combination Balancing & Shutoff (Ball) Valves ...........30
Motorized Valve ............................................................30
Multiple Unit Control Panel (MUCP).............................30
Thermostats and Wall Sensors ...............................31-32
Control Connection Diagrams .................................33-34
Typical Wiring Diagrams
............................................35-37
MicroTech III Controller with I/O Expansion Module &
Communication Module – 208/230V, 460V, 575V-60-3
Unit Sizes 096-120 .......................................................35
MicroTech™ III Controller with I/O Expansion Module &
Communication Module 208/230V, 460V, 575V-60-3
1.5 HP Motor ................................................................36
Electrical & Physical Data...............................................22
“McQuay” is a registered trademark of McQuay International.
©McQuay International 2009. All rights reserved throughout the world.
The information in this manual supersedes and replaces previous catalogues with regards to McQuay Water Source Heat Pump products.
Illustrations cover the general appearance of McQuay International products at the time of publication and McQuay International reserves the
right to make changes in design and construction at anytime without notice.
™®The following are trademarks or registered trademarks of their respective companies: LonTalk from Echelon Corporation, BACnet from ASHRAE, Protocol
Selectability, and MicroTech II from McQuay International.
Engineering Guide Specications
............................37-39
Page 2 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
Introduction
Large Horizontal Water Source Heat
Pumps - Models CCH & CCW
Sizes 072-120 (6 to 10 Tons)
Model CCH (Standard Range: 55°F to 110°F)
Model CCW (Geothermal Range: 30°F to 110°F)
McQuay 6- to 10-ton horizontal units have a common
cabinet size and common water, condensate, and duct con-
nection locations for easier and more efcient installation.
The cabinet is constructed of unpainted, G-60 galva-
nized steel. Large panels provide access to the fan/motor
compartment and the compressor/control compartment.
The interiors of the top and side panels and the bottom of
the unit are covered with 1/2" thick, 1½ lb. dual-density
berglass insulation. The lter is supported by a factorymounted combination lter rack and return air duct collar,
eliminating the need for eld-mounted brackets.
The water and condensate connections protrude through
the outside of the cabinet. The water connections are FPT
type for easy connection to exible stainless steel hoses.
The large condensate connection provides effective conden-
sate removal.
The electrical components are located in the compressor
section of the unit. Holes are provided on the cabinet to facilitate main power and low voltage control wiring through
separate holes. All wiring connections are made internal to
the cabinet for maximum safety. Each unit is rated to accept
time delay fuses for branch circuit and is protected by a
resettable circuit breaker.
The standard control for all large capacity units is the
MicroTech™ III unit controller. The unit controller receives
its power from the 75VA control transformer.
A LonWorks® or BACnet® communication module is
available as an option.
Nomenclature
W CCH 1 120 B L Y S Y Y F
Product Category
W = WSHP
Product Identier
CCH = Large Horizontal - Standard Range
CCW = Large Horizontal - Geothermal
Design Series
1 = A Design 4 = D Design
2 = B Design 5 = E Design
3 = C Design
Nominal Capacity
072 = 72,000 BTU/h
096 = 96,000 BTU/h
120 = 120,000 BTU/h
Controls
B = MicroTech III
A = DDC Less Board
Network Module Option
L = LonWorks® Module
B = BACnet® Module
Y = None
Note: For illustration purposes only. Not all options available with all models.
Please consult McQuay Sales Representative for specic availability.
Voltage
D = 208-60-3
F = 208/230-60-3
H = 230-60-3
K = 460-60-3
L = 575-60-3
N = 380-50-3
Reserved
Y = None
Reserved
Y = None
Condensate Overow
S = Standard Overow
Sensor
Current Sensing
Y = None
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 3 of 42
CCH & CCW Features and Options
MicroTech® III Controller
Schrader Connections
L
onWorks®
Communication
Module
I/O Expansion Module
BACnet®
Communication
Module
Enfinity Large Horizontal Water
Source Heat Pumps
Sizes 072 - 120 (6 to 10 Tons)
Model CCH (Standard Range: 55°F to 110°F)
Model CCW (Geothermal Range: 30°F to 110°F)
1. Cabinet - Heavy gauge G-60 galvanized steel.
2. Fan Section - A forward curved, DWDI fan, solid steel shaft
mounted in ball bearings. Motor to be three phase,
Open- Drip Proof (ODP) type with variable pitch sheave
and adjustable base.
3. Insulation - All interior framework and panels are lined with
1/2" thick, 1½ lb. dual-density berglass insulation. Optional
(IAQ) closed-cell foam insulation.
4. Drain Pan - Heavy-gauge, insulated, galvanized steel or op-
tional stainless steel.
5. Filters - Standard 2" factory-installed lter rack with 2" throw-
away lters. Filter rack outtted with duct collar.
6. Refrigerant Circuit - All units have a dual refrigerant circuit
with scroll compressors, thermal expansion valve, plate to
plate heat exchanger, nned tube airside coil, reversing valve
and service valves.
LED Annunciators
7. Electrical - The control enclosure includes components neces-
sary for proper unit operation. These components include,
but not limited to: fan relay, compressor contactors, 24 VAC
control transformer and control circuit boards.
8. Schrader Connections - Four Schrader valves are located in-
side the end access panel – one on the low side and one on the
high side of the refrigeration circuit – for charging and servic-
ing. All valves
are 7/16" SAE ttings.
9. MicroTech® III Controllers – Designed for exibility, the control
board is used in standalone applications in conjunction with
the I/O expansion module for control of the second refrigerant
circuit. A separate L
onWorks® or BACnet® communication
module can be easily snapped onto the Microtech III board to
allow communication with a building automation system. The
control system accomodates the use of a two-stage heat/two-
stage cool 7-day programmable or non-programmable wall-
mounted thermostat, offered as a eld-installed option.
10. LED Annunciators – External LED status lights display fault
conditions to provide easy troubleshooting and diagnosis, vis-
ible without removing the access panel.
11. External Pipe Connections – Supply and return pipe connec-
tions located outside the cabinet make pipe connections easy
without removing access panels.
Safety Controls (Not Shown) - Low and high refrigerant pres-
sure switches and low refrigerant suction temperature
(freezestat) sensor.
Page 4 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
CCH & CCW Features and Options
Cabinet Construction
McQuay 6- to 10-ton horizontal units have a common
cabinet size and common water, condensate, and duct connec-
tion locations for easier and more efcient installation.
The cabinet is constructed of heavy-gauge G-60 galva-
nized steel. Large panels provide access to the fan/motor
compartment and the compressor/control compartment. The
interiors of the top and side panels and the bottom of the unit
are covered with 1/2" thick, 1½ lb. dual-density berglass
insulation. Closed-cell foam (IAQ) insulation is available as
a selectable option, suitable for berglass-free applications.
The lter is supported by a factory-mounted combination lter
rack and return air duct collar, eliminating the need for eldmounted brackets.
The water and condensate connections protrude through
the outside of the cabinet. The water connections are FPT type
for easy connection to exible hoses. The large condensate
connection provides effective condensate removal.
The electrical components are located in the compres-
sor section of the unit. Holes are provided on the cabinet to
facilitate main power and low voltage control wiring through
separate holes. All wiring connections are made internal to the
cabinet for maximum safety. Each unit is rated to accept time
delay fuses for branch circuit and is protected by a resettable
circuit breaker.
Figure 1: Controls and Compressor Compartment
Extended range units include coil and piping insulation to
protect against condensation in low temperature geothermal
applications.
Safety controls include low suction temperature (freez-
stat) and high pressure switches to lock out compressor
operation at extreme conditions. The safety controls can
only be reset from the main disconnect switch - not from
the wall thermostat.
For additional safety, each unit has a 7 psi (48 kPa) low
pressure switch to protect the compressor from low refrig-
erant charge. The low setting prevents nuisance trips while
providing adequate protection.
Figure 2: Piping Compartment
Thermal Expansion Valve
Units include a Thermal Expansion Valve (TXV) for
refrigerant metering. The TXV allows the unit to operate at
optimum efciency with uid temperatures ranging from
25ºF to 110ºF (geothermal capable units only) and entering
air temperatures ranging from 40ºF to 90ºF. The TXV pre-
cisely meters the exact amount of refrigerant ow through
the system to meet the load and deliver rated heating and
cooling capacity.
Fan Section
The fan section includes the fan housing, fan wheel, fan
motor, adjustable sheave, high strength V-belt, and drain
pan. The standard drain pan is made of G-60 galvanized
Refrigeration System
Units have a dual circuit design and the two circuits
operate independently to enable load shedding when condi-
tions allow. Each circuit employs a random start feature to
prevent both compressors from energizing simultaneously
after an “unoccupied” cycle.
Units contain two of each refrigerant system compo-
nent, including high efciency compressors, plate-to-plate
heat exchangers, reversing valves, expansion valves,
high/low side refrigerant service valves, and required safety
controls. Large access panels are provided for easy service
access to any of these components.
The reversing valves are energized in the heating mode
and will “fail-safe” to the cooling mode, which is the pre-
dominant mode of operation.
The air-to-refrigerant coil is a dual circuit coil on one
slab. It is split equally along the horizontal axis for maxi-
mum efciency. The ns are lanced and the tubes have
nned edges on the inside to enhance heat transfer capabilities.
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 5 of 42
steel and is insulated from the cabinet. A stainless steel
drain pan is available as an option. The pan has ample
height to allow self-priming of the condensate trap. The
fan motor is a single speed, high efciency PSC type with
an adjustable sheave for eld adjustment. The motor is iso-
lated from the fan housing to minimize vibration transmis-
sion to the cabinet. The fan housing protrudes through the
cabinet to provide adequate material to connect to a eldprovided exible duct collar. The fan discharge can exit
from the end or the side of the unit and must be congured
at the factory.
Optional Factory Installed Features
Geothermal range units are available for applications
requiring heating operation at reduced entering condi-
tions. The geothermal range unit will operate at 25ºF (5ºC)
minimum entering water temperature, 40ºF (5ºC) minimum
entering air temperature.
Control Options – Control Choices And Added Functionality
The control enclosure houses the major operating electri-
cal controls including the MicroTech® III controller and I/O
expansion module, control transformer, compressor relays
and fan relay. Each component is easily accessed for service
or replacement.
Three unique control choices are offered with the Micro-
Tech III control system:
■ Standalone operation using a MicroTech III controller and
I/O expansion module
■ MicroTech III controller and I/O expansion module with a
LonWorks® communication module
■ MicroTech III controller and I/O expansion module with a
BACnet® communication module
Each option features direct quick-connect wiring to all
unit-controlled components for “clean” wiring inside the
control box. Each control circuit board receives power from
a 75 VA transformer.
Table 1: Control Options
Control Description Application Protocol
MicroTech III
(Standalone)
The MicroTech III controller is a standalone microprocessor-based control
board conveniently located in the unit
control enclosure for easy accessibility.
The board is designed to provide thermostat control of a Water Source Heat
Pump using a two-stage wall thermostat. The unit controller provides unitwide control of the WSHP and control
of the rst refrigerant circuit.
Each unit controller is factory programmed, wired,
and tested for complete control of single zone, standalone operation of your McQuay Water Source Heat
Pump.
Unit Controller
with
I/O Expansion
Module
The I/O Expansion Module is an extension of the Microtech III controller and
provides control of the second refriger-
ant circuit. External LED status lights
display fault conditions to provide easy
troubleshooting and diagnosis of the
second circuit.
Allows for:
• Control of second refrigeration circuit.
Uni t-mounted
or wall-mounted
thermostat
Wal l-mount ed
the rmostat or
sensor
LonWorks
Communication
Module
BACnet
Communication
Module
Page 6 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
The MicroTech III control system
accepts a plug-in LonWorks commu-
nication module to provide network
communications and added functional-
ity to easily integrate with an existing
BAS. The communication module can
be factory- or field-installed and is
tested with all logic required to monitor
and control the unit.
The MicroTech III controller accepts
a plug-in BACnet communication
module to provide network commu-
nications and added functionality to
easily integrate with an existing BAS.
The communication module can be
factory- or eld-installed and is tested
with all logic required to monitor and
control the unit.
Designed to be linked with a centralized building
automation system (BAS) through a L
munications network for centralized scheduling and
management of multiple heat pumps.
Designed to be linked with a centralized building
automation system (BAS) through a BACnet communications network for centralized scheduling and
management of multiple heat pumps.
onWorks com-
L o nMa rk 3 .4
certied
BACnet
MS/TP
Control Features – MicroTech® III Unit Controller
The MicroTech III Controller is a microprocessor-based
control board conveniently located in the unit control box for
easy access through a removable access panel. The standalone
unit controller is a hard wired interface and provides all the
necessary eld connections. The board can be wired for 24volt AC output to the wall thermostat by using terminals R
& C. An LED annunciator is located on the front of the unit
chassis to allow quick check of the unit operating status.
MicroTech III Operating Features
Assumes cycle fan operation-not continuous fan operation:
■ Start-up – The unit will not operate until all the inputs
and safety controls are checked for normal conditions.
■ Cooling mode – On a call for cooling from the wall ther-
mostat, the controller will energize the fan relay and stage
compressors to satisfy the space temperature setpoint.
When the load is satised, the controller will disable the
compressor and fan.
■ Heating Mode – On a call for heating from the wall
thermostat, the controller will enable the fan, energize
circuit one reversing valve and circuit 1 compressor to
satisfy the space heating setpoint. If the space temperature
setpoint is not satiseld, circuit two reversing valve and
circuit 2 compressor will be energized and run until the
heating setpoint at the thermostat is satised.
■ Random Start Power-up Delay Timer – In the event of
a building power outage, this feature prevents multiple
units from starting simultaneously upon building power
restoration.
■ Unoccupied Mode – A simple “grounded” signal between
terminals U and C (no power source required), puts the
unit into the unoccupied mode for night setback operation.
■ Interstaging Timer – A default value of 5 minutes be-
tween staging of compressors, this feature minimizes short
cycling of compressors and improves comfort.
■ Override Mode – A switch on the deluxe automatic
changeover thermostat can be activated during the unoc-
cupied mode to put the unit back into the occupied mode
for two hours for after-hours heating or cooling.
■ Motorized Valve/Pump Restart – The IV/PR (H8) ter-
minals on the The MicroTech III unit controller are used
to energize (open) a motorized valve or start a water pump
to get water circulating prior to starting the compressor on
call for heating or cooling. The IV/PR (H8) terminal may
be “daisy chained” between a maximum of 200 units.
■ Brownout Protection – The MicroTech III unit controller
measures the input voltage and will suspend compres-
sor and fan operation if the voltage falls below 80% of
the unit nameplate rated value. A unique LED status is
generated.
■ Unit Shutdown – A simple grounded signal puts the unit
into the shutdown mode. Compressor and fan operations
are suspended. A unique LED status is generated.
■ Condensate Overow Protection – The MicroTech III
controller incorporates a liquid sensor at the top of the
drain pan. Upon sensing water ow, cooling operation is
suspended. A unique LED status is generated.
■ Remote Reset of Automatic Lockouts – The Remote
Reset feature provides the means to remotely reset auto-
matic lockouts generated by high-pressure and/or lowtemperature faults. When the MicroTech III controller is
in automatic lockout due to one of these faults, and the
cause of the fault condition has been alleviated, energizing the O-terminal for 10 seconds or more will force the
control board to clear the lockout. A unit power cycle can
also be used to clear an automatic lockout if the conditions
causing the fault have been alleviated.
■ Intelligent Reset – The Fault Retry feature helps to
minimize nuisance trips of automatic lockouts caused by
high-pressure and/or low-temperature faults. This feature
clears faults the rst two times they occur within a 24-hour
period and triggers an automatic lockout on the 3rd fault.
The retry count is reset to zero every 24 hours.
■ Equipment Protection Control – The MicroTech III
controller receives separate input signals from the refrigerant high-pressure switch and the low suction line tem-
perature sensor. In a high-pressure situation, compressor
operation is suspended. In a low temperature situation,
the unit goes into a defrost cycle where the unit is put
into cooling operation for 60 seconds until the coaxial
heat exchanger is free of ice. Each switch generates its
own unique LED status.
Note: Most unit fault conditions are the result of operating
the equipment outside the unit specications.
Table 2: MicroTech III Controller LED & Fault Outputs
Mode / Fault
Occupied, Bypass,
Standby, or Tenant Off On Off Energized
Override
Unoccupied On On Off Energized
Condensate Overow On Off Off De-energized
High Pressure 1 Fault Off Off Flash De-energized
Low Pressure 1 Fault Off Off On De-energized
Low Temperature 1 Fault Flash Off Off De-energized
Brownout
Emergency Shutdown Off Flash Off De-energized
Room/Return Air or Low
Temp Sensor 1 Failure
Service Test Mode
Enabled
Serial EEPROM
Corrupted
Network “Ofine”
Received
1
Compressor relay/compressor terminal is labeled COMP, switched line of
the same electric input as any of the L1 terminals.
Status LED’s
1
Yellow Green Red Output-Terminal “A”
Off Flash Off De-energized
Flash Flash On De-energized
Flash Flash Flash De-energized
On On On De-energized
Off Off Off De-energized
Thermostat Alarm Light
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 7 of 42
Control Features – MicroTech III with I/O Expansion Module
I/O Expansion Module
The I/O Expansion Module is factory-installed for control
of the second refrigeration circuit.
The I/O Expansion Module has an independent LED an-
nunciator to identify operational fault conditions for the
second refrigeration circuit.
Table 3: I/O Expansion Module LED & Fault
Outputs
Terminal “A”
Invalid Conguration
Jumper Setting
Base Board
Communication Fail
High Pressure #2 Fault Off Off Flash De-energized
Low Pressure #2 Fault Off Off On De-energized
Unoccupied Mode On On Off Energized
Occupied, Bypass,
Standby, or Tenant
Override Modes
Note: Mode / Faults are listed in order of priority.
1
2
Mode / Fault
Low Suction Temp #2 Fault Flash Off Off De-energized
Sensor Failures Low Suction
Low Suction Temp #2, Flash Flash On De-energized
1
EWT (w/ Boilerless EH only)
2
Service Test Mode Enabled Flash Flash Flash De-energized
Normal Operation Off On Off De-energized
Boilerless electric heat only
Alarm/fault LED indications take precedence over service test mode LED
indication. The controller shall use service test mode if the service test
mode jumper is installed, even if the LED’s indicate an alarm/fault.
Yellow Green Red
Status LED's
Flash Flash Off De-energized
Off Flash Flash N/A
Off On Off Energized
Thermostat Alarm
Light Output
Figure 3: I/O Expansion Module Conguration
Jumper Terminals
Jumper Terminals
JP1 shorted in units with
2 compressors
JP1 through JP8 not
used with 2 circuit units.
Page 8 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
Control Features – MicroTech III with Communication Module
MicroTech® III Controller with LonWorks® or
BACnet Communication Module
Each Ennity Large Vertical and Horizontal Water
Source Heat Pump can be equipped with a LonWorks or
BACnet communication module. The LonWorks module is
LonMark 3.4 certied and designed to communicate over a
LonWorks communications network to a Building Auto-
mation System (BAS). The BACnet module is designed to
communicate over a BACnet MS/TP communications net-
work to a building automation system. Both controllers are
microprocessor-based and can be factory or eld-installed.
The control modules are programmed and tested with all
the logic required to monitor and control the unit. Optional
wall sensors may be used with the communication modules
to provide limited local control of the Horizontal Water
Source Heat Pump. The MicroTech III controller monitors
water and air temperatures and passes information to the
communication module. The module communicates with
the BAS, to provide network control of the Water Source
Heat Pump.
MicroTech III LonWorks Communication Module
The LonWorks communication module is designed for
units that are integrated into a LonWorks communication
network for centralized scheduling and management of
multiple heat pumps.
MicroTech III Controller with Communication Modules
Features
The MicroTech III Controller with LonWorks or BACnet
Communication Module orchestrates the following unit
operations:
Enable heating and cooling to maintain space
temperature setpoint based on a room sensor setting
Enable fan and compressor operation
Monitors all equipment protection controls
Monitors room and discharge air temperatures
Monitors leaving water temperature
Relays status of all vital unit functions
An amber, on-board status LED indicates the status of the
MicroTech III LonWorks or BACnet module.
The MicroTech III Controller Includes:
A unit-mounted return air sensor
A unit-mounted discharge air sensor
A leaving water temperature sensor
The communication modules provide network access to
setpoints for operational control
Available Wall Sensors Include:
Room sensor
MicroTech III BACnet Communication Module
Designed to be linked with a centralized building auto-
mation system (BAS) through a BACnet communications
network for centralized scheduling and management of
multiple heat pumps.
Room sensor with LED status and tenant override
button
Temperature sensor with LED status, timed-override
button, and ±3°F setpoint adjustment
Room sensor with LED status, timed-override
button, 55° to 90°F setpoint adjustment
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 9 of 42
Applications
Typical Horizontal Unit Installation
Unit Location
It is important to leave enough space for service person-
nel to perform maintenance or repair. Locate the horizon-
tal unit to allow for easy removal of the lter and access
panels. Allow a minimum of 18" (46 cm) clearance on each
side of the unit for service and maintenance access and
do not install the unit above any piping. Always be sure
to leave at least one side of the lter rack unobstructed so
that the service personnel will be able to slide the lter out.
Each unit is suspended from the ceiling by four 3/8" thread-
ed rods fastened to the unit by a hanger bracket and rubber
isolator. The design should place the unit directly below the
structural members so that it is securely anchored.
Avoid installing units directly above spaces where
building occupants will reside (e.g. above ofce desks or
classrooms) to reduce the requirement for noise attenuation.
Do not place units above high trafc areas because service
access may be limited during occupied hours. For example,
units are typically installed above the hallway drop ceiling
in Schools and the supply and return air is routed directly
into classrooms. Local code may require re dampers to be
used with this application.
Piping
The WSHP unit is typically connected to the supply/return piping using a “reverse return” piping system which
includes a ow control device so that ow requirements are
met for each zone. A short, high pressure “exible hose” is
used to connect the unit to the building’s hard piping and
Figure 4: Typical Ceiling Installation
acts as a sound attenuator for both the unit operating noise
and hydraulic pumping noise. One end of the hose has a
swivel tting to facilitate removal of the unit for replace-
ment or service. Include supply and return shutoff valves
in the design to allow removal of a unit without the need to
shut down the entire heat pump system. The return valve
may be used for balancing and will typically have a “memory stop” so that it can be reopened to the proper position
for the ow required. Fixed ow devices are commercially
available and can be installed to eliminate the need for
memory stop shut off valves. Include Pressure / Temperature ports to allow the service technician to measure water
ow and unit operation.
Condensate Drain Piping
Condensate piping can be made of steel, copper or PVC
pipe. In most cases, PVC pipe eliminates the need to wrap
insulation around the pipe to prevent sweating. A threaded,
factory supplied condensate tting allows the connection of
PVC, exible vinyl hose or steel braided hose.
The condensate piping must be trapped at the unit and
pitched away from the unit not less than 1/4" per foot. A
vent is required after the trap so that the condensate will
drain away from the unit. The vent can also act as a clean
out if the trap becomes clogged. To avoid having waste
gases entering the building, the condensate drain should
not be directly piped to a drain/waste/vent stack. See local
codes for the correct application of condensate piping to
drains.
Figure 5: Typical Condensate Piping
Condensate
Drain (P Trap)
1 1/2"
(38mm)
Page 10 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
1 1/2"
(38mm)
Optional
Field Installed Vent
1/4" Per Foot
(21mm Per Meter)
Ductwork and Sound Attenuation Considerations
Applications
Ductwork is normally applied to ceiling-mounted heat
pumps on the discharge side of the unit. A discharge collar
is provided on all horizontal unit models for fastening the
ductwork. Use a exible connector between the discharge
collar and the duct transformation to help reduce vibration
straight length of duct, 5 to 10 times the duct width, before
the next tting to smooth out airow. Diffusers that are lo-
cated in the bottom of a trunk duct can also produce noise.
For this same reason, volume control dampers should be
located several duct widths upstream from an air outlet.
transmission from the cabinet and to simplify disconnection
of the unit from the ceiling ductwork. If return ductwork
is to be used, attach a exible connector to the lter rack
collar to help reduce vibration transmission and removal of
the unit. Return plenum ducting should be at least 12 inches
away from the coil so that the coil is evenly loaded with
return air.
For Hotel, Motel, Dormitory or Nursing Home applica-
tions that use a single duct discharge, a velocity of 500 to
600 fpm is suggested. These applications typically have
static pressures as low as 0.05 inches of water and duct
lengths approximately six feet in length. The discharge
duct must be fully lined and have a square elbow without
turning vanes. Return air for these applications should
As a general recommendation, duct interiors should
have an acoustic / thermal lining at least 1/2 inch thick
over the entire duct run. For better sound attenuation, line
the last ve diameters of duct before each register with a
one-inch thick sound blanket. Elbows, tees and dampers
can create turbulence or distortion in the airow. Place a
enter through a “low” sidewall lter grille and route up the
stud space to a ceiling plenum. For horizontal heat pumps
mounted from the ceiling, an insulated return plenum is
sometimes placed at the return air opening to further
attenuate line-of-sight sound transmission through return
openings.
Figure 6: Suggested Supply Ducting per ASHRAE and SMACNA Publications
Flexible Connector
Acoustic/Thermal Lining
3ft. (.9m) to 5ft. (1.5m)
Acoustic/Thermal
Lining
Diffuser
(Ductwork Sized Based on Airow)
Figure 7: Suggested Return Ducting per ASHRAE and SMACNA Publications
Two 90° Turns Prior to the Intake
(Ductwork Sized Based on Airow)
Ductwork Supported
Independent of Unit
Acoustic/Thermal
Lining
Flexible Connector
Ductwork Supported
Independent of Unit
Diffuser
Two 90° Turns
Acoustic/Thermal
Lining
Return Air Intake
Located
Away from the
Unit Blower
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 11 of 42
Acoustic/Thermal
Lining 10ft. (3 meters)
Flexible Connector
Applications
Typical Cooling and Heating Refrigeration Cycles – Dual Compressors
Note: Typical temperature readings are at full load conditions at ISO-13256 for boiler-tower applications.
Figure 8: Cooling Refrigeration Cycle
When the wall thermostat calls for COOLING, the revers-
ing valve (de-energized) directs the ow of the refrigerant,
a hot gas, from the compressor to the water-to-refrigerant
heat exchanger (coaxial heat exchanger). There, the heat is
removed by the water, and the hot gas condenses to become
a liquid. The liquid then ows through a thermal expansion
valve to the air-to-refrigerant heat exchanger coil (evapora-
tor). The liquid then evaporates and becomes a gas, at the
same time absorbing heat and cooling the air passing over the
surfaces of the coil. The refrigerant then ows as a low pres-
sure gas through the reversing valve and back to the suction
side of the compressor to complete the cycle.
Figure 9: Heating Refrigeration Cycle
When the wall thermostat calls for HEATING, the
reversing valve (energized) directs the ow of the refriger-
ant, a hot gas, from the compressor to the air-to-refrigerant
heat exchanger coil (condenser). There, the heat is removed
by the air passing over the surfaces of the coil and the hot
gas condenses and becomes a liquid. The liquid then ows
through a thermal expansion valve to the water-to-refrigerant
heat exchanger (evaporator). The liquid then evaporates and
becomes a gas, at the same time absorbing heat and cooling
the water. The refrigerant then ows as a low pressure gas
through the reversing valve and back to the suction side of
the compressor to complete the cycle.
Page 12 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
Applications – Systems
Water source heat pump systems are one of the most ef-
cient, environmentally friendly systems available for heating
and cooling buildings. High-efciency, self contained units
(sizes 7,000 btuh to 290,000 btuh) can be placed in virtually
any location within a building. Each unit responds only to
the heating or cooling load of the individual zone it serves.
This permits an excellent comfort level for occupants, better
control of energy use for building owners and lower seasonal
operating costs. The Air-Conditioning Refrigeration Institute
(ARI) and the International Standards Organization (ISO)
publish standards so that water source heat pumps are rated
for specic applications. The ARI/ISO loop options shown in
this catalog are typical water source heat pump loop choices
available in today’s market. These systems offer benets rang-
ing from low cost installation to the highest energy efciency
available in the market today.
Boiler / Tower Applications: ARI 320 / ISO
13256-1
A “Boiler/Tower” application uses a simple two-pipe
water circulating system that adds heat, removes heat or
transfers rejected heat to other units throughout the build-
ing. The water temperature for heating is generally main-
tained between 65ºF – 70ºF and is usually provided by a
natural gas or electric boiler located in a mechanical room.
The condensing water temperature, during cooling months,
is maintained between 85ºF and 95ºF and requires the use
of a cooling tower to dissipate waste heat. Cooling tow-
ers can be located on the roof, or inside or adjacent to the
building. This application can be the lowest cost of the loop
options available.
Note: ASHRAE 90.1 standards require that circulating
pumps over 10 HP will require use of “variable frequency
drive” equipment and pipe insulation to be used whenever
water temperatures are below 60 degrees and above 105
degrees. See ASHRAE 90.1 Standards for details.
Open Loop Well Water Applications: ARI
325 / ISO 13256-1
“Open Loop” well water systems use ground water
to remove or add heat to the interior water loop. The
key benet of an open loop system is the constant water
temperature, usually 50ºF to 60ºF, which provides efcient
operation at a low rst cost. Most commercial designers
incorporate a heat exchanger to isolate the building loop
from the well water. Using heat exchangers can reduce
maintenance issues while still allowing the transfer of heat
from unit to unit as with the “Boiler/Tower System”. A successful design provides an ample amount of groundwater
(approximately 2 GPM per ton) and adequate provisions
for discharging water back to the aquifer or surface. Open
Loop applications are commonly used in coastal areas
where soil characteristics allow reinjection wells to return
the water back to the aquifer. Note that some states have requirements on the depths of return water reinjection wells,
and such wells must be approved by the United States En-
vironmental Protection Agency. Also, bad water quality can
increase problems with heat exchanger scaling. Suspended
solids can erode the heat exchanger. Strainers can be used
to contain suspended solids.
Figure 11: Open Loop Well Application
Figure 10: Boiler/Tower Application
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 13 of 42
Applications – Systems
Closed Loop Geothermal Applications ARI
330/ISO 13256-1
“Vertical Closed Loop” applications are installed by
drilling vertical bore holes into the earth and inserting
a plastic polyethylene supply/return pipe into the holes.
The vertical wells are connected in parallel reverse return
fashion to allow the water from the building to circulate
evenly throughout the boreeld. The circulating uid dissipates heat to the ground in a similar manner as a “tower”
and adds heat back to the loop like a boiler. If properly
designed, the loop eld can maintain the loop temperatures
necessary to condition the building without the use of a
boiler or a tower. Loop temperatures usually range from
37ºF to 95ºF in Northern climates. Southern applications
can see temperatures ranging from 40ºF to 100ºF. The
number of bore holes and their depth should be determined
by using commercial software that is specically designed
for vertical geothermal applications. Typical bore depths
of a vertical loop range from 150 to 400 feet and generally
require about 250 feet of surface area per ton of cooling.
Figure 12: Vertical Loop Application
Figure 13: Horizontal Loop Application
A “Surface Water” or “Lake” closed loop system is a
geothermal loop that is directly installed in a lake or body
of water that is near the building. In many cases, the body
of water is constructed on the building site to meet drainage
or aesthetic requirements. Surface loops use bundled
polyethylene coils that are connected in the same manner
as a vertical or horizontal loop using a parallel reverse
return design. The size and the depth of the lake is critical.
Commercial design services should be used to certify that a
given body of water is sufcient to withstand the building
loads. Loop temperatures usually range from 35ºF to 90ºF
and prove to be the best cooling performer and lowest
cost loop option of the three geothermal loops. Some
applications may not be good candidates due to public
access or debris problems from ooding.
Figure 14: Surface Water Loop Application
A closed loop “Horizontal” geothermal application
is similar to a vertical loop application with the exception
that the loops are installed in trenches approximately 5
feet below the ground surface. The piping may be installed
using a “four-pipe” or “six-pipe” design and could require
1,500 to 2,000 square feet of surface area per ton of
cooling. Loop temperatures for a commercial application
can range from 35ºF to 95ºF in Northern climates. Southern
climates can see temperatures ranging from 40ºF to
100ºF. Horizontal loops are generally not applied in urban
areas because land use and costs can be prohibitive. New
advances in installation procedures have improved the
assembly time of horizontal loops while keeping the rst
cost lower than a vertical loop.
Page 14 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
ISO Performance Data
Table 4: Water Loop
Unit Size
CFM L/S GPM L/S Btuh
072
096
120
Note: Water Loop Performance Data – Rated in Accordance with ISO Standard 13256-1
Table 5: Ground Loop
Unit Size
CFM L/S GPM L/S Btuh
072
096
120
Note: Ground Loop Performance Data – Rated in Accordance with ISO Standard 13256-1
Airow Waterow
1133
2400
3000
4000
1416
1888
20.1
23.6
30.1
Airow Waterow
1133
2400
3000
4000
1416
1888
20.1
23.6
30.1
1.27
1.49
1.90
1.27
1.49
1.90
Voltage
208/230-60-3
460-60-3
575-60-3
208/230-60-3
460-60-3
575-60-3
208/230-60-3
460-60-3
575-60-3
Voltage
208/230-60-3
460-60-3
575-60-3
208/230-60-3
460-60-3
575-60-3
208/230-60-3
460-60-3
575-60-3
78100
94900
121800
77700
97300
124600
Cooling Heating
Watts EER COP Btuh Watts COP
22868
27788
35664
13.4
14.8
14.4
3.9
4.3
4.2
Cooling Heating
Watts EER COP Btuh Watts COP
22751
28490
36484
16.3
16.8
16.0
4.8
4.9
4.7
82700
94300
126200
58700
66100
92500
24215
27612
36953
17188
19355
27085
4.4
4.3
4.4
3.7
3.3
3.6
Table 6: Ground Source
Unit Size
CFM L/S GPM L/S Btuh
072
096
120
Note: Ground Source Performance Data – Rated in Accordance with ISO Standard 13256-1
Airow Waterow
1133
2400
3000
4000
1416
1888
20.1
23.6
30.1
1.27
1.49
1.90
Voltage
208/230-60-3
460-60-3
575-60-3
208/230-60-3
460-60-3
575-60-3
208/230-60-3
460-60-3
575-60-3
82500
103100
134400
Cooling Heating
Watts EER COP Btuh Watts COP
24157
30189
39354
21.3
21.5
20.7
6.2
6.3
6.1
71400
79800
115700
20907
23366
33878
4.2
3.8
4.2
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 15 of 42
Cooling Capacity Data – Large Horizontal, Size 072 @ 2400 SCFM
EWT GPM WPD
EA LWT TOT SEN kW EER TOT kW EER THR
30
40
50
60
70
80
85
90
100
110
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
System ISO
75
63
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
38.8
67
39.5
71
40.1
63
35.9
67
36.3
71
36.8
63
34.5
67
34.8
71
35.1
63
48.7
67
49.3
71
49.9
63
45.8
67
46.2
71
46.6
63
44.4
67
44.7
71
45.0
63
58.5
67
59.1
71
59.6
63
55.7
67
56.1
71
56.5
63
54.3
67
54.6
71
54.9
63
68.3
67
68.8
71
69.4
63
65.6
67
65.9
71
66.3
63
64.2
67
64.5
71
64.7
63
78.1
67
78.6
71
79.1
63
75.4
67
75.8
71
76.1
63
74.1
67
74.3
71
74.6
63
87.9
67
88.4
71
88.9
63
85.3
67
85.6
71
86.0
63
84.0
67
84.2
71
84.5
63
92.8
67
93.3
71
93.8
63
90.2
67
90.6
71
90.9
63
88.9
67
89.2
71
89.4
63
97.8
67
98.2
71
98.7
63
95.2
67
95.5
71
95.8
63
93.9
67
94.1
71
94.4
63
107.6
67
108.1
71
108.5
63
105.1
67
105.4
71
105.7
63
103.8
67
104.1
71
104.3
63
117.5
67
117.9
71
118.3
63
115.0
67
115.3
71
115.6
63
113.8
67
114.0
71
114.2
97582
104910
112560
98516
105990
113790
98985
106540
114380
93797
100780
108060
94783
101930
109380
95272
102510
110070
89651
96314
103270
90655
97499
104600
91193
98094
105290
85347
91655
98202
86337
92768
99518
86832
93359
100220
80798
86768
93022
81764
87920
94322
82277
88515
94949
76192
81873
87815
77151
82935
88959
77648
83457
89577
73946
79412
85167
74800
80434
86371
75284
81013
86953
71650
77026
82608
72594
77981
83703
72985
78483
84292
67216
72317
77597
68010
73171
78579
68387
73621
79111
63029
67952
73041
63704
68644
73798
64065
69031
74199
71437
74520
77607
71925
75053
78195
72171
75326
78477
69452
72471
75500
69969
73039
76118
70234
73326
76441
67264
70227
73211
67805
70828
73846
68088
71130
74174
64956
67873
70798
65486
68434
71422
65753
68733
71758
62531
65414
68337
63044
65996
68956
63317
66295
69254
60056
62932
65839
60579
63480
66390
60847
63746
66690
58837
61678
64563
59296
62198
65146
59560
62495
65427
57592
60459
63330
58128
60945
63858
58311
61202
64140
55193
58037
60912
55622
58473
61386
55822
58704
61642
52895
55774
58676
53267
56140
59050
53465
56336
59248
2.91
2.96
3.01
2.78
2.82
2.86
2.72
2.75
2.79
3.41
3.45
3.49
3.28
3.31
3.35
3.21
3.25
3.28
3.93
3.97
4.00
3.80
3.83
3.86
3.73
3.76
3.78
4.49
4.53
4.57
4.36
4.39
4.42
4.30
4.32
4.34
5.13
5.16
5.19
4.99
5.01
5.03
4.92
4.93
4.95
5.84
5.86
5.88
5.68
5.70
5.72
5.61
5.63
5.64
6.21
6.24
6.26
6.07
6.08
6.09
5.99
5.99
6.01
6.62
6.63
6.65
6.45
6.47
6.48
6.38
6.39
6.39
7.45
7.45
7.46
7.29
7.30
7.30
7.22
7.21
7.21
8.31
8.29
8.27
8.17
8.15
8.13
8.09
8.08
8.06
33.5
35.5
37.4
35.4
37.5
39.7
36.4
38.7
41.0
27.5
29.2
31.0
28.9
30.8
32.6
29.6
31.6
33.6
22.8
24.3
25.8
23.8
25.5
27.1
24.4
26.1
27.8
19.0
20.2
21.5
19.8
21.1
22.5
20.2
21.6
23.1
15.8
16.8
17.9
16.4
17.6
18.8
16.7
18.0
19.2
13.1
14.0
14.9
13.6
14.5
15.5
13.9
14.8
15.9
11.9
12.7
13.6
12.3
13.2
14.2
12.6
13.5
14.5
10.8
11.6
12.4
11.3
12.1
12.9
11.4
12.3
13.2
9.0
9.7
10.4
9.3
10.0
10.8
9.5
10.2
11.0
7.6
8.2
8.8
7.8
8.4
9.1
7.9
8.5
9.2
100920
108233
115883
101839
109313
117113
102308
109863
117703
97120
104103
111383
98106
105253
112703
98595
105833
113393
92974
99637
106593
93978
100822
107923
94516
101417
108613
88670
94978
101525
89660
96091
102841
90155
96682
103543
84121
90091
96345
85087
91243
97645
85600
91838
98272
79515
85196
91138
80474
86258
92282
80971
86780
92900
77269
82735
88490
78123
83757
89694
78607
84336
90276
74973
80349
85931
75917
81304
87026
76308
81806
87615
70539
75640
80920
71333
76494
81902
71710
76944
82434
66352
71275
76364
67027
71967
77121
67388
72354
77522
2.88
2.92
2.97
2.75
2.79
2.83
2.69
2.72
2.76
3.37
3.41
3.45
3.25
3.28
3.32
3.18
3.22
3.25
3.90
3.93
3.97
3.77
3.79
3.82
3.70
3.73
3.75
4.46
4.49
4.53
4.33
4.36
4.38
4.27
4.29
4.31
5.10
5.13
5.16
4.96
4.97
5.00
4.89
4.90
4.92
5.80
5.83
5.85
5.65
5.67
5.69
5.58
5.60
5.61
6.18
6.21
6.23
6.04
6.05
6.05
5.96
5.96
5.97
6.58
6.59
6.61
6.42
6.44
6.45
6.35
6.36
6.36
7.41
7.42
7.43
7.26
7.26
7.26
7.19
7.18
7.18
8.28
8.25
8.23
8.14
8.12
8.10
8.06
8.05
8.03
33.9
35.8
37.7
34.6
36.6
38.7
33.4
35.5
37.6
28.0
29.6
31.3
28.5
30.3
32.1
27.7
29.5
31.3
23.2
24.7
26.2
23.7
25.3
26.8
23.2
24.7
26.3
19.4
20.7
21.9
19.8
21.1
22.5
19.4
20.7
22.1
16.2
17.2
18.3
16.5
17.6
18.8
16.3
17.4
18.6
13.5
14.4
15.3
13.8
14.7
15.7
13.6
14.5
15.5
12.3
13.1
14.0
12.5
13.4
14.3
12.4
13.3
14.2
11.2
12.0
12.8
11.5
12.3
13.1
11.3
12.1
13.0
9.4
10.1
10.7
9.6
10.3
11.0
9.5
10.2
10.9
7.9
8.5
9.2
8.0
8.7
9.3
8.0
8.6
9.2
107140
114590
122380
107690
115270
123170
107950
115600
123530
104850
111940
119330
105450
112680
120230
105740
113060
120700
102290
109040
116090
102900
109800
116990
103230
110190
117450
99700
106100
112750
100290
106790
113600
100580
107160
114070
97100
103150
109480
97637
103830
110280
97928
104180
110670
94675
100410
106410
95161
100990
107060
95416
101270
107420
93595
99129
104940
93999
99656
105600
94231
99958
105930
92545
97946
103580
92983
98415
104160
93147
98662
104470
90702
95810
101110
91011
96174
101570
91160
96372
101830
89215
94056
99075
89442
94326
99399
89561
94474
99576
Page 16 of 42 McQuay Ennity Horizontal Water Source Heat Pumps Catalog 1112-2
Heating Capacity Data – Large Horizontal, Size 072 @ 2400 SCFM
EWT GPM WPD
EA LWT TOT kW COP TOT kW COP THA
12.0
20
30
40
50
60
70
80
85
90
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
12.0
18.0
24.0
System ISO
60
15.9
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
5.6
12.2
21.2
16.1
16.4
17.3
17.4
17.6
17.9
18.1
18.2
24.8
25.1
25.4
26.5
26.7
27.0
27.4
27.6
27.7
33.6
34.0
34.3
35.7
36.0
36.2
36.8
37.0
37.2
42.2
42.7
43.1
44.8
45.1
45.4
46.1
46.3
46.6
50.7
51.2
51.8
53.8
54.2
54.5
55.3
55.6
55.9
59.1
59.7
60.3
62.7
63.1
63.5
64.5
64.8
65.2
67.3
68.0
68.8
71.5
72.0
72.5
73.7
74.0
74.4
71.4
72.2
72.9
75.9
76.4
77.0
78.2
78.6
79.0
75.5
76.3
77.1
80.3
80.9
81.4
82.7
83.1
83.6
40774
40592
40394
40774
40592
40394
40774
40592
40394
48594
48016
47444
48594
48016
47444
48595
48016
47444
57617
56571
55563
57618
56573
55564
57619
56573
55565
67729
66161
64671
67733
66164
64674
67735
66166
64675
78829
76696
74675
78839
76704
74681
78842
76706
74684
90797
88066
85477
90822
88086
85491
90829
88091
85496
103490
100140
96938
103550
100180
96970
103560
100190
96979
110050
106400
102870
110140
106460
102910
110160
106470
102930
116740
112750
108910
116870
112840
108980
116900
112870
109000
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
3.59
4.04
4.53
3.59
4.04
4.53
3.59
4.04
4.53
3.70
4.16
4.66
3.70
4.16
4.66
3.70
4.16
4.66
3.83
4.31
4.82
3.83
4.31
4.82
3.83
4.31
4.82
3.99
4.48
5.01
3.99
4.48
5.01
3.99
4.48
5.01
4.18
4.68
5.22
4.18
4.68
5.22
4.18
4.68
5.22
4.39
4.89
5.44
4.39
4.89
5.44
4.39
4.89
5.44
4.62
5.13
5.69
4.62
5.13
5.69
4.62
5.13
5.69
4.74
5.26
5.81
4.74
5.26
5.82
4.74
5.26
5.82
4.87
5.39
5.95
4.88
5.39
5.95
4.88
5.39
5.95
2.4
2.0
1.7
2.4
2.0
1.7
2.4
2.0
1.7
2.9
2.4
2.0
2.9
2.4
2.0
2.9
2.4
2.0
3.5
2.9
2.4
3.5
2.9
2.4
3.5
2.9
2.4
4.0
3.4
2.8
4.0
3.4
2.8
4.0
3.4
2.8
4.6
3.9
3.2
4.6
3.9
3.2
4.6
3.9
3.2
5.1
4.3
3.6
5.1
4.3
3.6
5.1
4.3
3.6
5.6
4.8
4.0
5.6
4.8
4.0
5.6
4.8
4.0
5.8
5.0
4.2
5.8
5.0
4.2
5.8
5.0
4.2
6.1
5.2
4.4
6.1
5.2
4.4
6.1
5.2
4.4
39187
39005
38807
39187
39005
38807
39187
39005
38807
47007
46429
45857
47007
46429
45857
47008
46429
45857
56030
54984
53976
56031
54986
53977
56032
54986
53978
66142
64574
63084
66146
64577
63087
66148
64579
63088
77242
75109
73088
77252
75117
73094
77255
75119
73097
89210
86479
83890
89235
86499
83904
89242
86504
83909
101903
98553
95351
101963
98593
95383
101973
98603
95392
108463
104813
101283
108553
104873
101323
108573
104883
101343
115153
111163
107323
115283
111253
107393
115313
111283
107413
3.13
3.58
4.07
3.13
3.58
4.07
3.13
3.58
4.07
3.23
3.69
4.20
3.23
3.69
4.20
3.23
3.70
4.20
3.37
3.84
4.36
3.37
3.84
4.36
3.37
3.84
4.36
3.53
4.01
4.54
3.53
4.02
4.54
3.53
4.02
4.54
3.72
4.21
4.75
3.72
4.21
4.75
3.72
4.21
4.75
3.93
4.43
4.98
3.93
4.43
4.98
3.93
4.43
4.98
4.16
4.67
5.22
4.16
4.67
5.22
4.16
4.67
5.22
4.28
4.79
5.35
4.28
4.80
5.35
4.28
4.80
5.35
4.41
4.92
5.48
4.41
4.93
5.49
4.41
4.93
5.48
2.7
2.5
2.2
2.8
2.5
2.2
2.8
2.5
2.2
3.3
2.9
2.6
3.3
2.9
2.6
3.3
2.9
2.6
3.8
3.3
3.0
3.8
3.3
3.0
3.8
3.3
3.0
4.3
3.8
3.3
4.3
3.8
3.3
4.3
3.8
3.3
4.8
4.2
3.7
4.8
4.2
3.7
4.8
4.2
3.7
5.3
4.7
4.1
5.3
4.7
4.1
5.3
4.7
4.1
5.8
5.1
4.5
5.8
5.1
4.5
5.8
5.1
4.5
6.0
5.3
4.7
6.0
5.3
4.7
6.0
5.3
4.7
6.2
5.5
4.8
6.2
5.5
4.9
6.2
5.5
4.9
29122
27472
25685
29122
27472
25685
29122
27472
25685
36606
34523
32318
36606
34523
32319
36606
34523
32319
45191
42603
39921
45193
42604
39922
45193
42604
39923
54769
51628
48425
54773
51631
48428
54774
51633
48429
65264
61527
57753
65273
61535
57759
65276
61537
57762
76556
72195
67820
76580
72212
67832
76586
72218
67837
88503
83492
78488
88555
83533
78517
88568
83543
78526
94665
89337
84002
94745
89394
84046
94762
89409
84058
100940
95272
89616
101060
95356
89677
101080
95375
89694
Catalog 1112-2 McQuay Enity Horizontal Water Source Heat Pumps Page 17 of 42
Cooling Capacity Data – Large Horizontal, Size 096 @ 3000 SCFM
EWT GPM WPD
EA LWT TOT SEN kW EER TOT kW EER THR
30
40
50
60
70
80
85
90
100
110
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
System ISO
63
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
42.4
67
42.9
71
43.4
63
40.8
67
41.2
71
41.5
63
39.9
67
40.2
71
40.4
63
52.4
67
52.8
71
53.3
63
50.8
67
51.1
71
51.5
63
49.8
67
50.1
71
50.4
63
62.3
67
62.7
71
63.2
63
60.7
67
61.1
71
61.4
63
59.8
67
60.1
71
60.3
63
72.2
67
72.6
71
73.1
63
70.6
67
71.0
71
71.3
63
69.7
67
70.0
71
70.3
63
82.1
67
82.5
71
82.9
63
80.6
67
80.9
71
81.2
63
79.6
67
79.9
71
80.2
63
91.9
67
92.3
71
92.8
63
90.5
67
90.8
71
91.1
63
89.6
67
89.8
71
90.1
63
96.9
67
97.3
71
97.7
63
95.4
67
95.7
71
96.0
63
94.5
67
94.8
71
95.0
63
101.8
67
102.2
71
102.6
63
100.4
67
100.7
71
101.0
63
99.5
67
99.7
71
100.0
63
111.7
67
112.1
71
112.5
63
110.3
67
110.6
71
110.9
63
109.4
67
109.7
71
109.9
63
121.6
67
122.0
71
122.3
63
120.2
67
120.5
71
120.8
63
119.4
67
119.6
71
119.8
108620
117220
126090
109060
117560
126660
109290
117750
127040
105330
113730
122660
105820
114320
123350
106130
114670
123770
101730
109840
118350
102220
110410
119070
102530
110760
119500
97953
105680
113850
98457
106270
114530
98762
106620
114950
93916
101300
109130
94423
101890
109820
94733
102260
110240
89641
96678
104150
90142
97272
104820
90456
97628
105240
87400
94287
101570
87911
94871
102250
88220
95230
102660
85116
91840
98957
85620
92427
99620
85933
92780
100030
80462
86832
93598
80945
87387
94235
81245
87735
94629
75544
81629
88028
76008
82161
88671
76300
82493
89051
73435
75836
78008
73658
76028
78311
73778
76151
78489
71786
74192
76420
72032
74468
76720
72183
74634
76900
70009
72436
74624
70258
72680
74922
70412
72836
75098
68125
70495
72671
68380
70769
72968
68535
70938
73150
66103
68455
70646
66354
68727
70938
66509
68897
71116
63999
66339
68539
64242
66610
68822
64395
66772
68997
62891
65254
67461
63147
65520
67744
63301
65683
67915
61741
64117
66347
61998
64391
66630
62157
64555
66804
59397
61790
64049
59638
62047
64320
59788
62207
64489
56925
59360
61673
57160
59615
61948
57310
59775
62110
2.58
2.62
2.58
2.50
2.54
2.18
2.45
2.48
1.93
3.08
3.12
3.16
3.01
3.04
3.08
2.97
3.00
3.03
3.57
3.61
3.64
3.51
3.54
3.56
3.47
3.49
3.52
4.09
4.12
4.15
4.02
4.05
4.07
3.98
4.00
4.02
4.65
4.67
4.69
4.57
4.59
4.61
4.53
4.55
4.57
5.27
5.29
5.31
5.19
5.20
5.22
5.14
5.16
5.17
5.61
5.63
5.65
5.53
5.54
5.56
5.48
5.49
5.50
5.98
5.99
6.01
5.89
5.90
5.91
5.84
5.85
5.86
6.80
6.80
6.81
6.71
6.71
6.71
6.65
6.65
6.65
7.74
7.73
7.73
7.65
7.64
7.62
7.59
7.57
7.56
30.4
32.4
35.3
31.2
33.3
39.8
31.7
33.8
43.4
25.8
27.6
29.5
26.4
28.3
30.3
26.8
28.7
30.7
22.2
23.8
25.5
22.7
24.3
26.1
22.9
24.7
26.5
19.2
20.7
22.1
19.6
21.1
22.6
19.8
21.3
22.9
16.6
17.9
19.2
16.9
18.2
19.6
17.1
18.4
19.8
14.3
15.4
16.5
14.6
15.7
16.8
14.7
15.9
17.1
13.2
14.2
15.3
13.5
14.5
15.6
13.6
14.7
15.8
12.2
13.1
14.1
12.4
13.4
14.4
12.6
13.5
14.6
10.3
11.1
12.0
10.5
11.3
12.2
10.6
11.5
12.4
8.6
9.3
10.1
8.8
9.5
10.3
8.9
9.6
10.4
111517
120117
128987
111957
120457
129557
112187
120647
129937
108227
116627
125557
108717
117217
126247
109027
117567
126667
104627
112737
121247
105117
113307
121967
105427
113657
122397
100850
108577
116747
101354
109167
117427
101659
109517
117847
96813
104197
112027
97320
104787
112717
97630
105157
113137
92538
99575
107047
93039
100169
107717
93353
100525
108137
90297
97184
104467
90808
97768
105147
91117
98127
105557
88013
94737
101854
88517
95324
102517
88830
95677
102927
83359
89729
96495
83842
90284
97132
84142
90632
97526
78441
84526
90925
78905
85058
91568
79197
85390
91948
2.55
2.60
2.55
2.47
2.51
2.16
2.43
2.46
1.91
3.06
3.10
3.14
2.99
3.02
3.05
2.95
2.98
3.00
3.55
3.59
3.62
3.49
3.51
3.54
3.45
3.47
3.50
4.07
4.09
4.12
4.00
4.02
4.05
3.96
3.98
4.00
4.62
4.64
4.67
4.55
4.57
4.59
4.51
4.53
4.55
5.24
5.26
5.28
5.17
5.18
5.20
5.12
5.14
5.15
5.59
5.60
5.62
5.51
5.52
5.53
5.46
5.47
5.48
5.96
5.97
5.99
5.87
5.88
5.89
5.82
5.83
5.84
6.77
6.78
6.79
6.69
6.69
6.69
6.64
6.63
6.63
7.72
7.71
7.71
7.62
7.61
7.60
7.57
7.55
7.54
33.3
35.4
38.5
31.6
33.6
40.1
28.0
29.8
37.2
28.1
30.0
31.9
26.8
28.7
30.6
24.1
25.8
27.6
24.1
25.7
27.5
23.1
24.7
26.5
21.0
22.5
24.1
20.8
22.2
23.7
20.0
21.4
23.0
18.3
19.7
21.1
17.9
19.2
20.5
17.3
18.6
19.9
16.0
17.2
18.5
15.3
16.4
17.6
14.9
16.0
17.2
13.9
15.0
16.1
14.2
15.2
16.3
13.8
14.8
15.9
12.9
13.9
14.9
13.0
14.0
15.0
12.8
13.7
14.7
12.0
12.9
13.9
11.0
11.8
12.7
10.8
11.6
12.5
10.2
11.0
11.9
9.2
9.9
10.6
9.1
9.8
10.6
8.8
9.5
10.3
117180
125900
134610
117360
125970
133930
117450
126000
133500
115440
123950
133000
115720
124300
133430
115890
124510
133690
113360
121570
130180
113660
121920
130650
113840
122130
130930
111180
118980
127230
111480
119350
127670
111650
119570
127940
108870
116310
124210
109150
116670
124650
109320
116890
124920
106520
113620
121140
106780
113950
121550
106950
114150
121800
105350
112290
119620
105610
112610
120010
105770
112800
120250
104230
110990
118140
104470
111290
118510
104620
111480
118740
102140
108530
115310
102350
108790
115630
102480
108950
115840
100200
106260
112650
100370
106480
112940
100480
106620
113120
Page 18 of 42 McQuay Ennity Horizontal Water Source Heat Pumps Catalog 1112-2
Heating Capacity Data – Large Horizontal, Size 096 @ 3000 SCFM
EWT GPM WPD
EA LWT TOT kW COP TOT kW COP THA
16.0
20
30
40
50
60
70
80
85
90
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
16.0
24.0
32.0
System ISO
60
18.0
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
12.0
26.1
45.4
18.1
18.2
18.5
18.6
18.6
18.8
18.9
18.9
27.6
27.7
27.8
28.2
28.3
28.3
28.5
28.6
28.7
37.1
37.2
37.3
37.8
37.9
38.0
38.2
38.3
38.4
46.5
46.6
46.8
47.4
47.5
47.6
47.9
48.0
48.1
55.8
56.0
56.2
56.9
57.0
57.2
57.5
57.6
57.7
65.1
65.4
65.6
66.3
66.5
66.7
67.1
67.2
67.4
74.4
74.6
74.9
75.8
76.0
76.2
76.6
76.8
76.9
79.0
79.2
79.5
80.5
80.7
80.9
81.4
81.5
81.7
83.5
83.8
84.2
85.1
85.4
85.6
86.1
86.3
86.5
47887
47219
46493
47908
47237
46507
47913
47242
46512
56884
56025
55080
56910
56045
55101
56928
56067
55122
66937
65849
64645
66989
65896
64686
67013
65917
64709
78160
76787
75282
78238
76852
75345
78291
76896
75380
90510
88768
86916
90639
88883
87018
90709
88951
87085
103970
101800
99534
104170
101980
99693
104270
102070
99776
118490
115830
113080
118780
116090
113290
118950
116240
113420
126110
123210
120130
126460
123530
120400
126650
123710
120560
134000
130780
127410
134410
131160
127740
134630
131360
127930
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
3.46
3.77
4.07
3.46
3.77
4.07
3.46
3.77
4.07
3.76
4.12
4.47
3.76
4.12
4.47
3.76
4.12
4.47
4.05
4.47
4.87
4.05
4.47
4.88
4.05
4.47
4.88
4.34
4.83
5.29
4.34
4.83
5.29
4.34
4.83
5.29
4.63
5.18
5.70
4.64
5.18
5.71
4.64
5.18
5.71
4.92
5.52
6.11
4.93
5.52
6.11
4.93
5.53
6.11
5.21
5.86
6.50
5.21
5.86
6.51
5.21
5.87
6.51
5.34
6.03
6.68
5.35
6.03
6.69
5.35
6.04
6.70
5.48
6.19
6.87
5.48
6.20
6.88
5.49
6.20
6.88
3.1
2.7
2.4
3.1
2.7
2.4
3.1
2.7
2.4
3.5
3.0
2.6
3.5
3.0
2.6
3.5
3.0
2.6
3.9
3.3
2.9
3.9
3.3
2.9
3.9
3.3
2.9
4.3
3.7
3.2
4.3
3.7
3.2
4.3
3.7
3.2
4.7
4.0
3.5
4.7
4.0
3.5
4.7
4.0
3.5
5.2
4.4
3.8
5.2
4.4
3.8
5.2
4.4
3.8
5.7
4.8
4.1
5.7
4.8
4.1
5.7
4.8
4.1
5.9
5.0
4.3
5.9
5.0
4.3
6.0
5.0
4.3
6.2
5.2
4.5
6.2
5.2
4.5
6.2
5.2
4.5
45484
44816
44090
45505
44834
44104
45510
44839
44109
54481
53622
52677
54507
53642
52698
54525
53664
52719
64534
63446
62242
64586
63493
62283
64610
63514
62306
75757
74384
72879
75835
74449
72942
75888
74493
72977
88107
86365
84513
88236
86480
84615
88306
86548
84682
101567
99397
97131
101767
99577
97290
101867
99667
97373
116087
113427
110677
116377
113687
110887
116547
113837
111017
123707
120807
117727
124057
121127
117997
124247
121307
118157
131597
128377
125007
132007
128757
125337
132227
128957
125527
2.93
3.22
3.51
3.15
3.45
3.73
3.52
3.81
4.10
3.22
3.57
3.91
3.45
3.80
4.13
3.81
4.16
4.50
3.51
3.92
4.32
3.74
4.15
4.54
4.10
4.51
4.91
3.81
4.28
4.73
4.03
4.51
4.96
4.40
4.87
5.32
4.10
4.63
5.15
4.33
4.86
5.37
4.69
5.22
5.74
4.39
4.97
5.55
4.62
5.20
5.78
4.98
5.57
6.14
4.67
5.31
5.94
4.90
5.54
6.17
5.26
5.91
6.54
4.81
5.48
6.13
5.04
5.71
6.36
5.40
6.08
6.72
4.94
5.64
6.31
5.17
5.87
6.55
5.54
6.24
6.91
3.1
2.9
2.7
3.0
2.7
2.5
2.7
2.5
2.4
3.5
3.2
2.9
3.3
3.1
2.8
3.1
2.8
2.6
3.9
3.5
3.2
3.7
3.4
3.1
3.5
3.2
2.9
4.3
3.9
3.5
4.1
3.7
3.4
3.9
3.5
3.2
4.8
4.3
3.8
4.6
4.1
3.7
4.3
3.8
3.5
5.2
4.6
4.1
5.0
4.5
4.0
4.7
4.2
3.8
5.7
5.0
4.5
5.5
4.8
4.3
5.1
4.6
4.1
5.9
5.2
4.6
5.7
5.0
4.5
5.4
4.8
4.3
6.2
5.4
4.8
6.0
5.2
4.7
5.6
5.0
4.4
36297
34611
32886
36315
34626
32898
36320
34631
32903
44310
42246
40134
44333
42263
40152
44349
42282
40169
53393
50891
48332
53441
50934
48368
53462
50952
48387
63631
60636
57576
63704
60695
57632
63753
60735
57663
75000
71443
67832
75120
71549
67922
75185
71610
67982
87491
83330
79092
87672
83494
79236
87773
83574
79311
101070
96223
91324
101340
96461
91519
101500
96599
91637
108240
103040
97761
108570
103330
98007
108750
103500
98152
115670
110080
104420
116060
110420
104720
116260
110610
104890
Catalog 1112-2 McQuay Enity Horizontal Water Source Heat Pumps Page 19 of 42
Cooling Capacity Data – Large Horizontal, Size 120 @ 4000 SCFM
EWT GPM WPD
EA LWT TOT SEN kW EER TOT kW EER THR
30
40
50
60
70
80
85
90
100
110
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
Page 20 of 42 McQuay Ennity Horizontal Water Source Heat Pumps Catalog 1112-2
System ISO
63
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
41.4
67
41.9
71
42.4
63
39.8
67
40.2
71
40.5
63
38.9
67
39.2
71
39.4
63
51.4
67
51.8
71
52.3
63
49.8
67
50.1
71
50.5
63
48.8
67
49.1
71
49.4
63
61.3
67
61.7
71
62.2
63
59.7
67
60.1
71
60.4
63
58.8
67
59.1
71
59.3
63
71.1
67
71.5
71
71.9
63
69.9
67
70.2
71
70.6
63
69.1
67
69.4
71
69.6
63
81.0
67
81.4
71
81.9
63
79.8
67
80.2
71
80.5
63
79.0
67
79.3
71
79.6
63
90.9
67
91.3
71
91.7
63
89.7
67
90.1
71
90.4
63
89.0
67
89.2
71
89.5
63
95.8
67
96.2
71
96.7
63
94.7
67
95.0
71
95.3
63
93.9
67
94.2
71
94.5
63
100.8
67
101.2
71
101.6
63
99.6
67
99.9
71
100.3
63
98.9
67
99.1
71
99.4
63
110.7
67
111.0
71
111.4
63
109.5
67
109.8
71
110.1
63
108.8
67
109.0
71
109.3
63
120.5
67
120.9
71
121.2
63
119.4
67
119.7
71
120.0
63
118.7
67
118.9
71
119.2
108620
117220
126090
109060
117560
126660
109290
117750
127040
105330
113730
122660
105820
114320
123350
106130
114670
123770
101730
109840
118350
102220
110410
119070
102530
110760
119500
126540
136290
146750
127170
137040
147640
127590
137550
148270
120880
130240
140250
121530
131020
141080
121970
131500
141630
115140
123960
133470
115720
124660
134310
116120
125140
134880
112220
120840
130050
112770
121490
130850
113160
121940
131380
109130
117610
126640
109760
118300
127380
110170
118730
127890
102870
110890
119410
103420
111540
120170
103810
112000
120700
96438
104070
112150
97034
104740
112870
97400
105160
113360
73435
75836
78008
73658
76028
78311
73778
76151
78489
71786
74192
76420
72032
74468
76720
72183
74634
76900
70009
72436
74624
70258
72680
74922
70412
72836
75098
90704
93864
96862
90993
94180
97212
91187
94399
97456
88080
91301
94342
88379
91627
94662
88581
91832
94880
85486
88678
91765
85749
88978
92090
85932
89180
92308
84159
87362
90449
84408
87633
90755
84585
87821
90961
82754
86013
89146
83039
86305
89428
83226
86485
89622
79863
83169
86326
80124
83447
86622
80305
83642
86831
76854
80219
83446
77127
80504
83731
77296
80685
83927
2.58
2.62
2.58
2.50
2.54
2.18
2.45
2.48
1.93
3.08
3.12
3.16
3.01
3.04
3.08
2.97
3.00
3.03
3.57
3.61
3.64
3.51
3.54
3.56
3.47
3.49
3.52
6.27
6.29
6.24
6.16
6.15
6.06
6.08
6.05
5.94
7.21
7.32
7.40
7.11
7.20
7.27
7.03
7.12
7.18
8.06
8.25
8.43
7.98
8.15
8.31
7.92
8.08
8.23
8.46
8.67
8.89
8.38
8.58
8.79
8.33
8.52
8.71
8.87
9.10
9.33
8.79
9.01
9.24
8.73
8.95
9.17
9.72
9.96
10.21
9.64
9.88
10.12
9.59
9.82
10.05
10.60
10.85
11.12
10.52
10.77
11.03
10.47
10.71
10.97
30.4
32.4
35.3
31.2
33.3
39.8
31.7
33.8
43.4
25.8
27.6
29.5
26.4
28.3
30.3
26.8
28.7
30.7
22.2
23.8
25.5
22.7
24.3
26.1
22.9
24.7
26.5
20.2
21.7
23.5
20.6
22.3
24.4
21.0
22.7
25.0
16.8
17.8
18.9
17.1
18.2
19.4
17.3
18.5
19.7
14.3
15.0
15.8
14.5
15.3
16.2
14.7
15.5
16.4
13.3
13.9
14.6
13.5
14.2
14.9
13.6
14.3
15.1
12.3
12.9
13.6
12.5
13.1
13.8
12.6
13.3
13.9
10.6
11.1
11.7
10.7
11.3
11.9
10.8
11.4
12.0
9.1
9.6
10.1
9.2
9.7
10.2
9.3
9.8
10.3
111517
120117
128987
111957
120457
129557
112187
120647
129937
108227
116627
125557
108717
117217
126247
109027
117567
126667
104627
112737
121247
105117
113307
121967
105427
113657
122397
129437
139187
149647
130067
139937
150537
130487
140447
151167
123777
133137
143147
124427
133917
143977
124867
134397
144527
118037
126857
136367
118617
127557
137207
119017
128037
137777
115117
123737
132947
115667
124387
133747
116057
124837
134277
112027
120507
129537
112657
121197
130277
113067
121627
130787
105767
113787
122307
106317
114437
123067
106707
114897
123597
99335
106967
115047
99931
107637
115767
100297
108057
116257
2.55
2.60
2.55
2.47
2.51
2.16
2.43
2.46
1.91
3.06
3.10
3.14
2.99
3.02
3.05
2.95
2.98
3.00
3.55
3.59
3.62
3.49
3.51
3.54
3.45
3.47
3.50
6.22
6.24
6.19
6.11
6.10
6.01
6.04
6.01
5.89
7.16
7.27
7.35
7.06
7.16
7.22
6.99
7.08
7.14
8.02
8.20
8.38
7.93
8.11
8.26
7.88
8.04
8.19
8.42
8.63
8.84
8.34
8.54
8.74
8.29
8.48
8.67
8.83
9.05
9.28
8.75
8.96
9.19
8.70
8.91
9.13
9.67
9.92
10.16
9.60
9.83
10.07
9.55
9.78
10.01
10.56
10.81
11.07
10.48
10.72
10.98
10.43
10.67
10.92
33.3
35.4
38.5
31.6
33.6
40.1
28.0
29.8
37.2
28.1
30.0
31.9
26.8
28.7
30.6
24.1
25.8
27.6
24.1
25.7
27.5
23.1
24.7
26.5
26.1
32.0
34.2
22.9
24.5
26.6
21.4
23.1
25.2
18.7
20.2
22.1
18.8
19.9
21.1
17.7
18.8
20.1
15.7
16.8
17.9
15.9
16.6
17.5
15.0
15.8
16.7
13.5
14.3
15.1
14.7
15.4
16.1
14.0
14.6
15.4
12.6
13.3
14.0
13.6
14.2
14.9
13.0
13.6
14.3
11.7
12.3
13.0
11.6
12.2
12.7
11.1
11.7
12.3
10.2
10.7
11.3
10.0
10.4
11.0
9.6
10.1
10.6
8.8
9.3
9.8
97180
105900
114610
97360
105970
113930
97450
106000
113500
95440
103950
113000
95720
104300
113430
95890
104510
113690
93360
101570
110180
93660
101920
110650
93840
102130
110930
126880
136700
147000
127150
136990
147310
127310
137200
147530
124260
134000
144270
124580
134390
144670
124780
134620
144930
121300
130720
140810
121600
131110
141280
121810
131360
141590
119680
128980
138890
119980
129340
139360
120190
129580
139660
117920
127140
136900
118270
127530
137340
118510
127770
137630
114390
123220
132540
114700
123590
132990
114920
123850
133300
110830
119280
128220
111160
119670
128650
111370
119910
128940
Heating Capacity Data – Large Horizontal, Size 120 @ 4000 SCFM
EWT GPM WPD
EA LWT TOT kW COP TOT kW COP THA
20.0
20
30
40
50
60
70
80
85
90
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
20.0
30.0
40.0
System ISO
60
17.9
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.4
40.1
69.6
18.0
18.1
18.3
18.4
18.5
16.9
17.0
17.2
22.6
22.9
23.2
25.0
25.2
25.5
26.2
26.4
26.6
31.4
31.7
32.1
34.1
34.3
34.6
35.5
35.8
36.0
40.0
40.4
40.8
43.1
43.4
43.7
44.8
45.0
45.3
48.6
49.0
49.5
52.0
52.3
52.7
53.9
54.2
54.5
57.0
57.5
58.0
60.9
61.3
61.7
63.0
63.3
63.6
65.3
65.9
66.5
69.7
70.1
70.6
72.0
72.4
72.7
69.4
70.1
70.7
74.1
74.5
75.0
76.5
76.9
77.3
73.5
74.2
74.9
78.4
78.9
79.4
81.0
81.4
81.8
72324
74810
78748
72324
74810
78748
79165
77726
76195
92622
91218
89309
93029
91218
89309
93029
91218
89309
105900
104410
102750
108400
106150
103770
108400
106150
103770
120450
118680
116710
125080
122570
119640
125350
122570
119640
135950
133850
131550
141790
139280
136550
143920
140510
136940
137590
135020
132270
144600
141610
143400
153510
149870
155580
170110
167100
163950
178410
174860
171140
183210
179240
175170
179110
175910
172510
188320
184330
180330
193420
189150
184760
188450
184850
181270
198420
194160
189760
203910
199260
194550
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
6.78
8.26
10.20
6.78
8.26
10.20
5.09
5.56
6.02
5.46
6.02
6.55
5.48
6.02
6.55
5.48
6.02
6.55
5.81
6.45
7.06
5.87
6.50
7.10
5.87
6.50
7.10
6.17
6.88
7.56
6.28
6.98
7.66
6.28
6.98
7.66
6.53
7.30
8.05
6.66
7.45
8.21
6.71
7.48
8.22
6.90
7.73
8.54
7.05
7.91
8.73
7.14
7.98
8.79
7.28
8.16
9.04
7.44
8.35
9.23
7.55
8.45
9.34
7.45
8.37
9.27
7.65
8.56
9.47
7.75
8.68
9.60
7.65
8.57
9.50
7.85
8.79
9.71
7.96
8.90
9.83
2.2
1.7
1.3
2.2
1.7
1.3
3.6
3.1
2.8
4.0
3.5
3.0
4.0
3.5
3.0
4.0
3.5
3.0
4.4
3.8
3.3
4.5
3.8
3.3
4.5
3.8
3.3
4.8
4.1
3.6
4.9
4.2
3.6
4.9
4.2
3.6
5.2
4.4
3.8
5.3
4.5
3.9
5.3
4.5
3.9
5.5
4.7
4.1
5.7
4.8
4.2
5.8
4.9
4.2
5.9
5.0
4.4
6.1
5.2
4.5
6.2
5.3
4.5
6.1
5.2
4.5
6.3
5.4
4.6
6.4
5.4
4.7
6.3
5.4
4.6
6.4
5.5
4.8
6.6
5.6
4.8
70722
73208
77146
70722
73208
77146
77563
76124
74593
91020
89616
87707
91427
89616
87707
91427
89616
87707
104298
102808
101148
106798
104548
102168
106798
104548
102168
118848
117078
115108
123478
120968
118038
123748
120968
118038
134348
132248
129948
140188
137678
134948
142318
138908
135338
135988
133418
130668
142998
140008
141798
151908
148268
153978
168508
165498
162348
176808
173258
169538
181608
177638
173568
177508
174308
170908
186718
182728
178728
191818
187548
183158
186848
183248
179668
196818
192558
188158
202308
197658
192948
6.41
7.88
9.81
6.89
8.36
10.29
4.62
5.08
5.53
5.00
5.55
6.07
5.01
5.55
6.07
5.01
5.55
6.07
5.34
5.97
6.58
5.40
6.02
6.61
5.40
6.02
6.61
5.70
6.40
7.08
5.81
6.51
7.17
5.81
6.51
7.17
6.06
6.83
7.57
6.19
6.98
7.73
6.24
7.01
7.74
6.43
7.26
8.06
6.58
7.43
8.25
6.67
7.51
8.31
6.81
7.69
8.55
6.97
7.87
8.74
7.08
7.98
8.86
6.99
7.90
8.78
7.18
8.08
8.99
7.28
8.21
9.11
7.18
8.09
9.02
7.38
8.32
9.23
7.49
8.43
9.35
2.7
2.4
2.1
2.6
2.2
2.0
3.1
2.8
2.6
4.3
3.9
3.5
4.0
3.6
3.3
3.5
3.2
2.9
4.6
4.2
3.8
4.4
3.9
3.6
3.8
3.5
3.2
5.0
4.5
4.0
4.8
4.3
3.9
4.2
3.8
3.5
5.4
4.8
4.3
5.2
4.6
4.2
4.6
4.2
3.8
5.2
4.6
4.1
5.0
4.5
4.1
4.7
4.2
4.1
6.1
5.4
4.9
5.9
5.3
4.7
5.4
4.8
4.4
6.3
5.6
5.0
6.1
5.4
4.9
5.6
5.0
4.5
6.5
5.7
5.1
6.3
5.6
5.0
5.8
5.2
4.7
50336
48022
45656
50336
48022
45656
62661
59691
56674
74893
71677
68049
75261
71677
68049
75261
71677
68049
87043
83494
79844
89344
85066
80739
89345
85066
80739
100430
96357
92179
104720
99908
94799
104970
99909
94799
114780
110150
105420
120180
115090
109910
122160
116230
110260
130200
124930
119560
136730
130950
125080
140360
133970
127060
146500
140620
134620
154280
147780
141200
158710
151820
144860
154930
148740
142440
163510
156560
149600
168280
160970
153630
163640
157040
150440
172940
165620
158260
178080
170370
162640
Catalog 1112-2 McQuay Enity Horizontal Water Source Heat Pumps Page 21 of 42
Electrical Data & Physical Data
Table 7: Large Horizontal Unit
Unit Size Voltage/Hz/Phase
072
096
120
208/230-60-3
460-60-3
575-60-3
380-50-3
208/230-60-3
460-60-3
575-60-3
380-50-3
208/230-60-3
460-60-3
575-60-3
380-50-3
Table 8: Large Horizontal Size 072 - 120
Unit Size 072 096 120
Fan Wheel - D x W (In.)
Fan Motor Horsepower
Coil Face Area (Sq. Ft.) 9.0 9.0 10.5
Coil Rows
Refrigerant Charge (Oz.)
Compressor 2 53 55 60
Filter, (Qty.) Size (In.)
Water Connections, Female NPT
Condensate Connections, Female NPT
Weight, Operating (Lbs.)
Weight, Shipping (Lbs.) 710 760 782
Compressor 1
(1) 10W x 20H
632 682 694
Compressor 1
Fan
Motor (HP)
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
3
3
3
3
RLA LRA
14.7
6.6
4.6
6.6
15.3
6.9
5.4
6.8
17.4
8.6
6.5
8.6
(2) 28" × 231/2" × 2 (3) 28" × 19" × 2 (3) 28" × 19" × 2
88.0
44.0
30.0
46.0
83.1
41.0
33.0
43.0
110.0
52.0
38.9
51.5
13 × 13 13 × 12 16 × 15
1.5 1.5 3
3 3 3
55 55 60
11/4" FPT 11/4" FPT 11/4" FPT
7/8" 7/8" 7/8"
Compressor 2
RLA LRA
14.7
6.6
4.6
6.6
15.3
6.9
5.4
6.8
17.4
8.6
6.5
8.6
Fan Motor Total Unit
FLA FLA Voltage Circuit Amps Fuse Size
88.0
44.0
30.0
46.0
83.1
41.0
33.0
43.0
110.0
52.0
38.9
51.5
5.6
2.8
2.3
3.4
5.6
2.8
2.0
3.4
9.5
4.5
3.4
4.8
35.0
16.0
11.5
16.6
36.2
16.6
12.8
17.0
44.3
21.7
16.4
22.0
Minimum
187.0
416.0
520.0
342.0
187.0
416.0
520.0
342.0
187.0
416.0
520.0
342.0
Minimum
38.7
17.7
12.7
18.3
40.0
18.3
14.2
18.7
48.7
23.9
18.0
24.2
Maximum
50
20
15
20
50
25
15
25
60
30
20
30
Page 22 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
Operating Limits
Table 9: Air Limits - °F (English units)
Standard Range Geothermal Range
Units Units
Cooling
Min. Ambient Air 50ºF 50ºF 40ºF 40ºF
Normal Ambient Air 80ºF 70ºF 80ºF 70ºF
Max Ambient Air 100ºF 85ºF 100ºF 85ºF
Min. Entering Air
Normal Entering Air db/wb 80/67ºF 70ºF 80/67ºF 70ºF
Max Entering Air db/wb
1,2
50ºF 50ºF 50ºF 40ºF
1,2
100/83ºF 80ºF 100/83ºF 80ºF
Heating Cooling Heating
Table 10: Air Limits - °C (SI units)
Standard Range Geothermal Range
Units Units
Cooling
Min. Ambient Air 10ºC 10ºC 5ºC 5ºC
Normal Ambient Air 27ºC 21ºC 27ºC 21ºC
Max Ambient Air 38ºC 29ºC 38ºC 29ºC
Min. Entering Air
Normal Entering Air db/wb 27/19ºC 21ºC 27/19ºC 21ºC
Max Entering Air db/wb
1,2
10ºC 10ºC 10ºC 5ºC
1,2
38/28ºC 27ºC 38/28ºC 27ºC
Heating Cooling Heating
Table 11: Water - °F (English units)
Standard Range Geothermal Range
Units Units
Cooling
Min. Entering Water
Normal Entering Water 85ºF 70ºF 77ºF 40ºF
Max Entering Water 110ºF 90ºF 110ºF 90ºF
1,2
55ºF 55ºF 30ºF 20ºF
Heating Cooling Heating
Environment
This equipment is designed for indoor installation only.
Sheltered locations such as attics, garages, etc., generally
will not provide sufcient protection against extremes in
temperature and/or humidity, and equipment performance,
reliability, and service life may be adversely affected.
Power Supply
A voltage variation of +/-10% of nameplate voltage is
acceptable. Three-phase system imbalance shall not exceed
2%.
Additional Information for Initial
Start-Up Only
Standard Range Units:
Units are designed to start in an ambient of 50ºF (10ºC),
with entering air at 50ºF (10ºC), with entering water at 70ºF
(21ºC), with both air and water at the ow rates used in the
ISO 13256-1 rating test, for initial start-up in winter.
Note: This is not a normal or continuous operating
condition. It is assumed that such a start-up is for the
purpose of bringing the building space up to occupancy
temperature.
Table 12: Water - °C (SI units)
Standard Range Geothermal Range
Units Units
Cooling
Min. Entering... Water
Normal Entering Water 29ºC 21ºC 25ºC 4ºC
Max Entering Water 43ºC 32ºC 43ºC 32ºC
1 At ARI ow rate
Maximum and minimum values may not be combined. If one value is
2
at maximum or minimum, the other two conditions may not exceed the
normal condition for standard units. Extended range units may combine
any two maximum conditions, but not more than two, with all other
conditions being normal conditions.
1,2
13ºC 13ºC -1ºC -6ºC
Heating Cooling Heating
Geothermal Range Units:
Geothermal range heat pump conditioners are designed
to start in an ambient of 40ºF (5ºC), with entering air at
40ºF (5ºC), with entering water at 40ºF (5ºC), with both air
and water at the ow rates used in the ISO 13256-1 rating
test, for initial start-up in winter.
Note: This is not a normal or continuous operating
condition. It is assumed that such a start-up is for the
purpose of bringing the building space up to occupancy
temperature.
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 23 of 42
Correction Factors
Table 13: Airow Correction Factors
55
Total Cooling Capacity
Sensible Cooling Capacity
kW - Cooling
Total Heat of Rejection
Total Heating Capacity
kW - Heating
Total Heat of Absorption
0.935
0.779
0.925
0.931
0.912
1.025
0.908
60 65 70 75 80 85 90 95 100
0.942
0.803
0.933
0.939
0.921
1.022
0.918
0.948
0.828
0.942
0.946
0.931
1.019
0.928
0.955
0.852
0.950
0.954
0.940
1.017
0.938
Percent of Nominal Airow
0.962
0.877
0.959
0.961
0.950
1.014
0.948
0.969
0.901
0.967
0.969
0.960
1.011
0.958
0.976
0.926
0.976
0.976
0.969
1.009
0.968
0.983
0.950
0.984
0.984
0.979
1.006
0.978
0.990
0.975
0.993
0.991
0.988
1.003
0.988
1.000
1.000
1.000
1.000
1.000
1.000
1.000
105
Total Cooling Capacity
Sensible Cooling Capacity
kW - Cooling
Total Heat of Rejection
Total Heating Capacity
kW - Heating
Total Heat of Absorption
155
Total Cooling Capacity
Sensible Cooling Capacity
kW - Cooling
Total Heat of Rejection
Total Heating Capacity
kW - Heating
Total Heat of Absorption
1.004
1.024
1.010
1.006
1.007
0.998
1.008
1.073
1.269
1.095
1.081
1.103
0.971
1.108
110 115 120 125 130 135 140 145 150
1.011
1.048
1.019
1.014
1.017
0.995
1.018
160 165 170 175 180 185 190 195
1.079
1.294
1.104
1.089
1.113
0.968
1.118
1.017
1.073
1.027
1.021
1.027
0.992
1.028
1.086
1.318
1.113
1.096
1.122
0.965
1.128
Percent of Nominal Airow
1.024
1.098
1.036
1.029
1.036
0.990
1.038
1.093
1.343
1.121
1.104
1.132
0.962
1.138
1.031
1.122
1.044
1.036
1.046
0.987
1.048
Percent of Nominal Airow
1.100
1.367
1.130
1.111
1.141
0.960
1.149
1.038
1.147
1.053
1.044
1.055
0.984
1.058
1.107
1.392
1.138
1.119
1.151
0.957
1.159
1.045
1.171
1.061
1.051
1.065
0.981
1.068
1.114
1.417
1.147
1.126
1.161
0.954
1.169
1.052
1.196
1.070
1.059
1.074
0.979
1.078
1.121
1.441
1.155
1.134
1.170
0.952
1.179
1.059
1.220
1.078
1.066
1.084
0.976
1.088
1.128
1.466
1.164
1.141
1.180
0.949
1.189
Antifreeze Correction Factors
Table 14: Ethylene Glycol
10% 20% 30% 40% 50%
Cooling Capacity 0.9950 0.9920 0.9870 0.9830 0.9790
Heating Capacity 0.9910 0.9820 0.9770 0.9690 0.9610
Pressure Drop 1.0700 1.1300 1.1800 1.2600 1.2800
1.066
1.245
1.087
1.074
1.094
0.973
1.098
Table 15: Propylene Glycol
Cooling Capacity 0.9900 0.9800 0.9700 0.9600 0.9500
Heating Capacity 0.9870 0.9750 0.9620 0.9420 0.9300
Pressure Drop 1.0700 1.1500 1.2500 1.3700 1.4200
10% 20% 30% 40% 50%
Table 16: Methanol
10% 20% 30% 40% 50%
Cooling Capacity 0.9980 0.9720 – – –
Heating Capacity 0.9950 0.9700 – – –
Pressure Drop 1.0230 1.0570 – – –
Table 17: Ethanol
10% 20% 30% 40% 50%
Cooling Capacity 0.9910 0.9510 – – –
Heating Capacity 0.9950 0.9600 – – –
Pressure Drop 1.0350 0.9600 – – –
Page 24 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
1100 RPM
1000 RPM
1
1/2
HP
900 RPM
800 RPM
1000 RPM
1
1/2
HP
900 RPM
800 RPM
1000 RPM
3
H
P
900 RPM
800 RPM
Do Not Select
0.00
0.50
0.00
1.00
1.50
2.00
2.50
500
2,000 3,000 4,000 5,000 6,000
1,500 2,000 3,500
cfm (cubic feet per minute)
cfm (cubic feet per minute)
cfm (cubic feet per minute)
EXTERNAL STATIC PRESSURE (INCHES OF WATER)
4,500 1,000 2,000 3,000 4,000 5,000
0.50
1.00
1.50
2.00
0.00
0.50
1.00
1.50
2.00
EXTERNAL STATIC PRESSURE (INCHES OF WATER)
EXTERNAL STATIC PRESSURE (INCHES OF WATER)
Performance Data
Figure 15: Large Horizontal – Size 072 Figure 16: Large Horizontal – Size 096
Figure 17: Large Horizontal – Size 120
cfm = 0.472 = L/s
hp × 0.746 = kW
inches × 249 Pa = mm
Table 18: 60 Hz
Unit Motor RPM Factory Motor Sheave
Size HP Range Setting (RPM) Position
072 1.5 756-902 785 1 Turn Open
096 1.5 720-860 752 1½ Turns Open
120 3 756-901 815 3 Turns Open
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 25 of 42
Table 19: 50 Hz
Unit Motor RPM Factory Motor Sheave
Size HP Range Setting (RPM) Position
072 1.5 756-902 786 4 Turns Open
096 1.5 720-860 748 1½ Turns Open
120 3 756-902 815 3 Turns Open
Note: For wet coil, calculate face velocity (cfm ÷ coil face
area). Add the following exeternal static pressure for the
corresponding face velocity
English Units SI Units
300 fpm = .20" 1.52 m/sec. = 49.8 Pa
400 fpm = .31" 2.03 m/sec. = 77.2 Pa
500 fpm = .44" 2.54 m/sec. = 109.6 Pa
Re-enter curve at the increased static pressure to determine
nal cfm.
A
B
D
E
F
C
2"
(51mm)
C
D
B
E
A
Dimensional Data
Figure 18: Large Horizontal – Size 072
Overall Unit Dimensions: 78" L × 44" W × 29" H (Add 2" For Hanger Bracket)
Figure 19: Dimensions - Straight Discharge
Figure 20: Dimensions - Filter Rack/Return Air Duct
Collar
Unit Size A B C D E F
78" 44" 29" 15⅝" 13⅜" 3/4"
072
(1981mm) (1118mm) (737mm) (397mm) (346mm) (19mm)
Note: Straight discharge shown. Rearrange panels and blower
position for end discharge. See IM 1060 for conversion instructions.
Unit Size A B C D E
45.12" 26.53" 3.20" 1.82" 1.50"
072
(1146mm) (674mm) (81mm) (46mm) (38mm)
Page 26 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
A
B
D
E
F
C
2"
(51mm)
Figure 21: Large Horizontal – Size 096
C
D
B
E
A
Dimensional Data
Overall Unit Dimensions: 78" L × 44" W × 29" H (Add 2" For Hanger Bracket)
Figure 22: Dimensions - Straight Discharge
Figure 23: Dimensions - Filter Rack/Return Air Duct
Collar
Unit Size A B C D E F
78" 44" 29" 15½" 13⅜" 3/4"
096
(1981mm) (1118mm) (737mm) (394mm) (346mm) (19mm)
Note: Straight discharge shown. Rearrange panels and blower
position for end discharge. See IM 1060 for conversion instructions.
Unit Size A B C D E
55.12" 26.53" 3.20" 1.82" 1.50"
096
(1400mm) (674mm) (81mm) (46mm) (38mm)
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 27 of 42
C
D
B
E
A
A
B
D
E
F
C
2"
(51mm)
Dimensional Data
Figure 24: Large Horizontal – Size 120
Overall Unit Dimensions: 78" L × 44" W × 29" H (Add 2" For Hanger Bracket)
Figure 25: Dimensions - Straight Discharge
Figure 26: Dimensions - Filter Rack/Return Air Duct
Collar
Unit Size A B C D E F
78" 44" 29" 18½" 16½" 7/8"
120
(1981mm) (1118mm) (737mm) (470mm) (419mm) (22mm)
Note: Straight discharge shown. Rearrange panels and blower
position for end discharge. See IM 1060 for conversion instructions.
Unit Size A B C D E
55.12" 26.53" 3.20" 1.82" 1.50"
120
(1400mm) (674mm) (81mm) (46mm) (38mm)
Page 28 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
Figure 27: Large Horizontal - Hanger Brackets – Sizes 072 thru 120
By Others
By McQuay
International
44"
(1118 mm)
42"
(1067 mm)
Fan
Assembly
2"
(51 mm)
2" (51 mm)
Airflow
Coil
Comp.
Comp.
80" (2032 mm)
Control
Box
82" (2082 mm)
5/8" Threaded Rod
(By Others)
Accessories
Supply and Return Water Hoses
Available as re rated construction in 2 or 3 foot (610
mm or 914 mm) lengths. Fire rated hoses have a synthetic
polymer core with an outer rated covering of stainless
steel. Fittings are steel. Assembly is “re rated” and tested
according to UL 94 with a VO rating and ASTM 84. Each
hose has MPT connections. Hoses have a swivel connection
at one end and are available in 1¼" (32 mm) to match the
FPT ttings on the unit.
Figure 28: Supply and Return Water Hoses
Condensate Hose Kit
Available as a long clear plastic hose with the necessary
clamps and a MPT hose tting for connection to the FPT
eld piping.
Figure 29: Condensate Hose Kit
Hose Specifications
Inner Tube: Fire retardant TRP (Thermosplastic Rubber)
tested to UL-94 with V-O rating.
Outer Braid: Stainless steel wire (ANSI 302/304)
Temperature range: 40°F to 200°F
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 29 of 42
Accessories
Combination Balancing and Shutoff (Ball)
Valves
Constructed of brass and rated at 400 psig (2758 kPa)
maximum working pressure. Valves have a built-in adjust-
able memory stop to eliminate rebalancing. Valves have
FPT connections on both ends for connection to the water
hose and to the eld piping.
Figure 30: Shutoff Ball Valve
Motorized Valve
Used in variable pumping type applications, the valve
actuator is wired and typically piped in the return water
line. On a call for heating or cooling, the valve will open
prior to the compressor starting. The 24VAC valve actuator
must be wired directly to terminal block H8 on the
MicroTech III controller. The valve is rated for 300
psig (2070 kPa).
Multiple Unit Control Panel (MUCP)
Figure 32: Multiple Unit Control Panel and Board
The Multiple Unit Control Panel (MUCP) is an accessory used when up to 3-units are controlled from a single
thermostat. The MUCP must be eld-installed in a remote
location, typically close to the units and convenient for
service access.
A maximum of 2 boards may be used together if up to
6-units must be connected and controlled from a single
thermostat.
Figure 33: Multiple Unit Control Panel Ciruit Board
Figure 31: 2-Way Motorized Valve
Field Installed Controls
The 2-way motorized water valve kit includes the valve
body, actuator and wire harness. The valve will only open
on a call for heating or cooling. The valve is rated for 300
psig (2070 kPa).
A multiple unit control panel allows a single thermostat
to control up to three units in parallel.
The multiple unit control board provides the components necessary to protect the MicroTech III unit controller
from electrical damage that may occur when using standard
off-the-shelf relays.
This version of the board uses VAC relays and should
not be used in combination with any other accessories or
equipment that require VDC connections to the “G”, “W1”,
or “Y1” terminals.
Page 30 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
Accessories
These easy-to-operate comfort command centers bring
you a complete range of deluxe features. Features that
enable you to match temperature programming to your application, provide added convenience, and help save energy
and money. All packed into an extra rugged, highly reliable
design that will look and perform like new for years to
come.
Programmable Electronic Thermostat TwoStage Heat/Two-Stage Cool, 7-Day Programmable
Figure 34: McQuay Part No. 668375301
(1-Pk, White with Wall Plate)
668375301 – Specications
Electrical Rating:
• 24 VAC (18 to 30 VAC/VDC)
• 1 amp maximum per terminal
• 4 amp maximum total load
• Easy access terminal block
Temperature Control Ranges:
• 45ºF to 90ºF (7ºC to 32ºC), Accuracy: ± 1ºF (± 0.5ºC)
System Congurations:
• Two-stage heat/Two-stage cool
Terminations:
• R, C, W1, Y1, W2, Y2, G, S1, S2
Non-Programmable, Auto or Manual Changeover Two Stage Heat/Two Stage Cool, Night
Setback Override
Figure 35: McQuay Part No. 668375401
(1-Pk, White with Wall Plate)
Features
• Hardwired
• Programmable and congurable
• Simpleset
programming for the entire week
• Title 24 compliant/No batteries required
• Relay Ouputs (minimum voltage drop in thermostat)
• Clear, backlit display makes it easy to see time,
temperature, and setpoint — even in the dark
• Ideally suited for: Light commercial/residential
(new construction/replacement)
• Lockout feature prevents unwanted tampering
• Optional remote temperature sensor available
(see page 32)
TM
feature enables easy copying of one day's
Features
• Hardwired
• Two-stage heat / two-stage cool systems
• Backlit display
• Field temperature calibration
• Status indicator light
• Relay outputs (minimum voltage drop in thermostat)
• Night set-back override (used when unit is wired through
a time clock on the U-terminal)
• Optional remote temperature sensor available
(see page 32)
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 31 of 42
Accessories
668375401 – Specications
Electrical Rating:
• 24 VAC (18 to 30 VAC/VDC)
• 1 amp maximum per terminal
• 4 amp maximum total load
• Easy access terminal block
Temperature Control Ranges:
• 45ºF to 90ºF (7ºC to 32ºC), Accuracy: ± 1ºF (± 0.5ºC)
System Congurations:
• Two-stage heat / two-stage cool
Timing:
• Backlight Operation: 13 seconds after mode change or
button press
Terminations:
• +R, -C, W1, Y1, W2, Y2, G, O, S1, S2
Optional Remote Sensor
Figure 36: Part No. 667720401 – Used with
Thermostat(s) 668375301 & 668375401
The fast, easy solution for temperature sensing problems.
• For tamper prone areas
• Poor airow areas
• Troubled applications
• Foam gasket prevents drafts
through wall opening
• Mounts to standard 2" x 4"
outlet box
• 23/4"W x 41/2"H
MicroTech III Water Source Heat Pump
Room Temperature Sensors
(Kit P/N 669529101, 669529201, 669529001
Figure 37: Room Temperature Sensors
Sensor 669529101
Sensor 669529201 Not Shown
Room temperature sensors provide electronic sensing of
room temperatures at wall locations. All sensor models
feature a thermistor (10kΩ), a green LED for unit
status and tenant override button. Setpoint adjustment
potentiometer, heat and fan mode switches are optional
features.
669529001 669529101 669529201
Tenant Override
Button
SPT Adj. Pot No Yes Yes
Status LED Yes Yes Yes
Fan and
Mode Switches
Notes:
1
55º to 95°F (13º to 35ºC) Setpoint Adjustment
2
-3º to +3ºF (-1.5º to +1.5ºC) Setpoint Adjustment
Feature
Sensor Part Numbers
Yes Yes Yes
No
Figure 38: MicroTech III Wall Sensor Details
Sensor 669529001
1
Yes
2
Yes
0 to 10 K ohm
Potentiometer
3.75"
Status LED
(Green)
4.59"
Mode Control
Slide Switch
Page 32 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
Tenant Override
Momentary Push Button Switch
Fan Control
Slide Switch
Accessories
MicroTech III Unit Control Board
Low Voltage Terminal Strip (Circuit 1)
W1
Y1
W2
Y2
G
Thermostat
Terminals
-
C
TB2
24VAC
Alarm Output
Heat 2
Heat 1
Cool 2
Cool 1
Fan
Tenant Override
24VAC Common
C
O
G
Y1
Y2
W1
W2
A
R
+
R
MicroTech III Unit Control Board
Low Voltage Terminal Strip (Circuit 1)
W1
Y1
W2
Y2
G
Thermostat
Terminals
-
C
TB2
24VAC
Alarm Output
Heat 2
Heat 1
Cool 2
Cool 1
Fan
Tenant Override
24VAC Common
C
O
G
Y1
Y2
W1
W2
A
R
+
R
O
Optional Water Source Heat Pump Room
Temperature Sensors Wiring
Figure 39: Temperature Sensor Wiring to
MicroTech III Unit Controller (Kit Part No.s
669529101, 669529201
Temperature
Sensor Terminals
MicroTech III Unit
Controller TB1 Terminals
Programmable Electronic Thermostat
Two-Stage Heat/Two-Stage Cool, 7-Day
Programmable
Figure 41: (Part No. 668375301)
Notes: Includes Thermostat and Wall Plate.
Figure 40: Temperature Sensor Wiring to
MicroTech III Unit Controller (669529001)
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 33 of 42
Temperature
Sensor Terminals
MicroTech III Unit
Controller TB1 Terminals
Non-Programmable, Auto or Manual
Changeover Two Stage Heat/Two Stage
Cool, Night Setback and Override Feature
Figure 42: (Part No. 668375401)
Override (Optional)
Note: An additional conductor is required between
"O" terminals for the override feature to work.
Accessories
Optional Remote Sensor Wiring to
Thermostat(s) 668375301 or 668375401
Figure 43: Part No. 667720401
Thermostat
Remote Sensor
S2
S1
S1
S2
Wire 2
Cut R12 from
circuit board
Wire 1
Page 34 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
Typical Wiring Diagram
MicroTech™ III Controller with I/O Expansion Module
& Communication Module
208/230, 460, 575-60-3 (1.5 hp or less)
Drawing No. 910101586
MicroTech III Control Board
JP1 Open (Normal) Shorted (Test Mode)
JP2 Shorted
Open (Std Range)
JP3
Shorted (Geothermal Range)
JP4 Spare
JP5 Open
JP6 Open
JP7 Spare
JP8 Spare
JP1 Shorted
JP2 Open
JP3 Open
JP4 Open
JP5 Open
JP6 Open
JP7 Spare
JP8 Spare
I/O Expansion Module
Legend
Item Description
CC1 Circuit 1 Compressor Contactor
CC2 Circuit 2 Compressor Contactor
CM1 Circuit 1 Compressor
CM2 Circuit 2 Compressor
COS Condensate Overow Sensor
HP Circuit 1 High Pressure Switch
HP2 Circuit 2 High Pressure Switch
IOEXP I/O Expansion Board / Harness
LED1 LED Annunciator / Harness
LED2 LED Annunciator / Harness
*RAT Return Air Temp Sensor
*LWT Leaving Water Temp Sensor
LP Circuit 1 Low Pressure Switch
LP2 Circuit 2 Low Pressure Switch
SLTS Circuit 1 Suction Line Temp Sensor
SLTS2 Circuit 2 Suction Line Temp Sensor
R1 Fan Motor Starter
RV Circuit 1 Reversing Valve Solenoid
RV2 Circuit 2 Reversing Valve Solenoid
TB1 Power Terminal Block
X1 75 VA Transformer
*DAT Discharge Air Temp Sensor
*EWT Entering Water Temp Sensor
Notes:
1. “Run/Prg” Jumper to be in “Run” position
for normal operation
* Optional with Communication Module
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 35 of 42
Typical Wiring Diagrams
MicroTech™ III Controller with I/O Expansion Module
& Communication Module
208/230, 460, 575-60-3 (greater than 1.5 hp)
Drawing No. 910101589
MicroTech III Control Board
JP1 Open (Normal) Shorted (Test Mode)
JP2 Shorted
Open (Std Range)
JP3
Shorted (Geothermal Range)
JP4 Spare
JP5 Open
JP6 Open
JP7 Spare
JP8 Spare
JP1 Shorted
JP2 Open
JP3 Open
JP4 Open
JP5 Open
JP6 Open
JP7 Spare
JP8 Spare
I/O Expansion Module
Legend
Item Description
CC1 Circuit 1 Compressor Contactor
CC2 Circuit 2 Compressor Contactor
CM1 Circuit 1 Compressor
CM2 Circuit 2 Compressor
COS Condensate Overow Sensor
HP Circuit 1 High Pressure Switch
HP2 Circuit 2 High Pressure Switch
IOEXP I/O Expansion Board / Harness
LED1 LED Annunciator / Harness
LED2 LED Annunciator / Harness
*RAT Return Air Temp Sensor
*LWT Leaving Water Temp Sensor
LP Circuit 1 Low Pressure Switch
LP2 Circuit 2 Low Pressure Switch
SLTS Circuit 1 Suction Line Temp Sensor
SLTS2 Circuit 2 Suction Line Temp Sensor
R1 Fan Motor Starter
RV Circuit 1 Reversing Valve Solenoid
RV2 Circuit 2 Reversing Valve Solenoid
TB1 Power Terminal Block
X1 75 VA Transformer
*DAT Discharge Air Temp Sensor
*EWT Entering Water Temp Sensor
Notes:
1. “Run/Prg” Jumper to be in “Run” position
for normal operation
* Optional with Communication Module
Page 36 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
Engineering Specications – Model CCH, CCW
General
Contractor shall furnish and install Water Source Heat Pumps as indicated on plans. Each unit shall be CETL Listed. Units
less than 135,000 Btu/hr. total cooling capacity shall be ISO rated per Standard 13256-1. Each unit shall be fully run tested at
the factory. Each unit shall be shipped on a wooden skid and covered with plastic.
Casing and Cabinet
The casing shall be constructed of heavy-gauge G-60 galvanized steel corner posts and steel panel construction with heavy
gauge steel base pan. The base pan shall have holes to accept eld installation of rubber or spring isolators. The interior shall
be lined with 1/2" thick, 1½ lb. density glass ber. Multiple panels on front, back and sides shall provide access to compressor,
control box, fan motor and fan assembly. Unit shall have a galvanized steel painted drain pan with a drain connection extending
through the unit casing. Insulated drain pan shall act as a divider panel between the compressor and fan sections. Units shall have
as standard a factory installed 2" thick lter brackets for side lter removal. Unit shall have multiple 2" thick throwaway lters.
Cabinets shall have knockouts for entrance of line voltage and low voltage control wiring. Supply return water and condensate
connections shall be copper FPT ttings and protrude through the casing.
R-410A Refrigerant Circuit
Units shall be dual circuit design containing scroll compressors, electronic expansion valve, water-to-refrigerant braze
plate heat exchanger, reversing valve, nned tube heat exchanger (air coil), and safety controls. Non-ozone depleting R-410A
refrigerant must be used.
Compressor(s) shall be scroll type with thermal overload protection and external rubber vibration isolation mounts. Air coil
shall be aluminum ns bonded to copper tubes. The braze plate heat exchanger shall be stainless steel plates with copper braz-
ing with a U.L. Listing and a 400 psig water side rating and a 450 psig refrigerant side rating. High and low side service valves
shall be provided on each refrigerant circuit for measuring and charging of the refrigerant circuit.
Safety controls shall include a low suction temperature (freezestat), high refrigerant pressure and low refrigerant pressure
switches. Units shall be capable of being reset only by interrupting the power supply to the unit and not from the wall thermostat.
Unit shall be capable of starting in an ambient of 40º F with entering water at 55º F standard range, 20º F extended range, with
both air and water ow rates at the ISO rating conditions.
Electrical
A control enclosure shall be located within the unit and shall contain controls for compressor(s), reversing valves(s) and
fan motor operation. A terminal block shall facilitate main power wiring connection. A 75 VA transformer shall supply the low
voltage control circuit.
Unit shall be nameplated to accept time delay fuses for branch overcurrent protection of the power conductors.
Unit control system shall provide one or two stage cooling and heating as required by the setpoints of the wall thermostat.
The unit shall be capable of providing an output signal to a unit-mounted LED annunciator to indicate a “fault” condition.
The control system shall be microprocessor based and provide the following:
■ Stand-alone operation
■ LonWorks communication capabilities (Must be LonMArk 3.4 certied)
■ BACnet communication capabilities (BACnet MS/TP Network)
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 37 of 42
Engineering Specications – Model CCH, CCW
Fan and Motor Assembly
Units shall have a belt driven centrifugal fan. The fan housing shall protrude through the cabinet to facilitate eld duct con-
nection.
Solid-State Control System
MicroTech III Control System - Unit shall have a microprocessor- based control system. The unit control logic shall pro-
vide heating and cooling operation as required by the wall thermostat set point. The control system shall provide the following
for stand-alone operation:
1. The use of standard non-programmable or programmable wall thermostats.
2. Fan operation simultaneous with the compressor (fan interlock) regardless of thermostat logic.
3. Time delay compressor operation.
4. Delayed de-energizing of the reversing valve for quiet reversing valve operation.
5. Compressor short cycle protection of a minimum of three minutes before restart is possible.
6. Random unit start-up after coming off on unoccupied mode.
7. Single grounded wire connection for activation of the unoccupied or unit shutdown modes.
8. Night setback temperature setpoint input signal from the wall thermostat.
9. Override signal from wall thermostat to override unoccupied mode for 2 hours.
10. Brownout protection to suspend unit operation if the supply voltage drops below 80% of normal.
11. Condensate overow protection to suspend cooling operation in an event of a full drain pan.
12. Suspended compressor operation upon activation of the refrigerant pressure switch(es).
13. Cooling operation activated for 60 seconds upon activation of the low suction temperature sensor -
defrost cycle.
14. Method of defeating compressor, reversing valve and fan time delays for fast service diagnostics.
15. Remote reset - Provides means to remotely reset automatic lock-outs generated by high/low pressure faults and/or
low temperature faults.
16. Fault Retry clears faults the 1st two times they occur within a 24-hour period and triggers automatic lock-out on
3rd fault.
MicroTech® III Control with I/O Expansion Module – I/O Expansion Module connects directly to the main MicroTech
III controller to provide control of the second refrigeration circuit.
MicroTech® III Control with LonWorks® Communication Module – Unit shall have a microprocessor-based control
system. The unit control logic shall communicate over a LonMark communications network. The unit controller is factory
programmed [LonMark ® 3.4 certied Application Code the current standard for new applications] and tested with all the logic
required to monitor and control heating and cooling operation. The controller sets the unit mode of operation, monitors water
and air temperatures, and can communicate fault conditions via a LonMark communications network. Units with the MicroTech III and LonWorks communication module include return air, discharge air and leaving water temperature sensors. Space
temperature sensor options include a set-point adjustment, tenant override button, and the capability of substituting the return
air sensor with a wall-mounted room sensor.
Microtech III Control w/ BACnet® Communication Module – Unit shall have a microprocessor-based control system.
The unit control logic shall communicate over a BACnet communications network. The BACnet communication module shall
incorporate an Atmel ARM7 Thumb series MCU and be capable of supporting a full MSTP BACnet implementation. The
microprocessor shall also support SPI compatible communications with the MCU of the Microtech III controller. The physi-
cal interface to a BACnet BAS network shall be through an industry standard RS-485 transceiver capable of existing on an
RS-485 network of up to 64 nodes. The unit controller is factory programmed and tested with all the logic required to monitor
and control heating and cooling operation. The controller sets the unit mode of operation, monitors water and air temperatures,
and can communicate fault conditions via a BACnet communications network. Units outtted with Microtech III and BACnet
Communication modules include return air, discharge air and leaving water temperature sensors. Space temperature sensor
options include a set-point adjustment, tenant override button, and the capability of substituting the return air sensor with a
wall-mounted room temperature sensor.
Page 38 of 42 McQuay Large Horizontal Water Source Heat Pumps Catalog 1112-2
Engineering Specications – Model CCH, CCW
Each communicating unit controller performs the following unit operations:
■ Enable heating and cooling to maintain space temperature set point at the room sensor
■ Enable fan and compressor operation
■ Monitor all safety controls
■ Monitor discharge and return air temperature
■ Monitor leaving water temperature
■ Relay status of all vital unit functions
■ Support optional control outputs
Unit mounted LED annunciators aid in diagnosing unit operation by indicating the water source heat pump operating mode
and alarm conditions. If there are no current alarm conditions, a green LED on the annunciator board will indicate normal unit
operating mode. If an alarm condition exists, the Microtech III controller will send the fault condition to the LED annunciator,
which will assist in troubleshooting the unit. LED Annunciator shall be visible without removing access panel. Heat pumps
with the MicroTech III Controller with a LonWorks Communication Module is designed to be linked with a centralized Build-
ing Automation System (BAS) through a LonMark communications network for centralized scheduling and management of
multiple heat pumps.
Wall-mounted room sensors are available to control the heating and cooling operation of each MicroTech III Water Source
Heat Pump.
Available room sensors include:
■ Room Sensor with timed override button and LED;
■ Room temperature sensor with timed-override button and set point adjustment (55 to 95 deg F);
■ Room sensor with timed-override button and set point adjustment (-3 to +3 deg F);
■ Room sensor (no options, sensor only).
Warranty
An optional 4-year extended compressor warranty covers the compressor for 5 years from the date at which the unit ships
from the factory.
An optional 4-year extended refrigeration circuit warranty covers the entire refrigeration circuit and related components for
5 years.
Field Installed Accessories
Wall Thermostat Options
■ Programmable Electronic Thermostat Two-stage heat/Two-stage cool, 7-day programmable. Subbase shall have
system "Mode/Prog" and fan "Auto/On" switches. Thermostat shall have the option of an Optional Remote Sensor.
■ Non-programmable, auto or manual changeover Two-stage heat/Two-stage cool, night setback override. Subbase
shall have system "Cool/Off/Heat/Auto" and fan "Auto/On switches. Thermostat shall have the option of an Optional
Remote Sensor.
Wall Temperature Sensor Options:
■ Wall Sensor with timed-override button.
■ Wall Sensor with timed-override button and set point adjustment (55 to 95 deg F), fan mode switch (auto/on), opera-
tional mode button (Heat/Cool/Auto) and status LED to display fault condition.
■ Wall Sensor with timed-override button and set point adjustment (-3 to +3 deg F), fan mode switch (auto/on), opera-
tional mode button (Heat/Cool/Auto) and status LED to display fault condition.
Hose Kits:
Two re-rated exible hoses with ASTM ratings of Flame Spread 25, Fuel Contribution 25 and Smoke Density 50 for con-
nection to unit and eld piping. Hose shall be covered with stainless steel braiding to prevent damage.
Valve Options:
■ Combination water balancing and shutoff valve with adjustable memory stop.
■ Optional 2-way, Normally Open (N.O.) or Normally Closed (N.C.) motorized water valves.
Catalog 1112-2 McQuay Large Horizontal Water Source Heat Pumps Page 39 of 42
McQuay Water Source Heat Pumps
Quality Products, Flexible Congurations
Stacking Units
3/4 to 3 Ton
Large Vertical Units
6 to 25 Ton
Large Horizontal Units
6 to 10 Ton
Console Units 3/4 to 11/2 Ton
Rooftop Units 3 to 35 Ton
Water to Water Source Heat
Pump Units
3 to 35 Ton
Ennity Vertical &
Horizontal Units
1/2 to 6 Ton
Warranty
All McQuay equipment is sold pursuant to its standard terms and conditions of sale, including Limited Product Warranty. Consult your local McQuay Representative for warranty details. Refer to Form
933-43285Y. To find your local McQuay Representative, go to www.mcquay.com.
This document contains the most current product information as of this printing. For the most up-to-date
product information, please go to www.mcquay.com.
Products Manufactured in an ISO Certified Facility.
© 2010 McQuay International • www.mcquay.com • (800) 432-1342 Catalog 1112-2 (4/10)
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