McQuay MHC018 User Manual
Catalog 1104-2
®
Ennity™ Console Water Source Heat Pumps
1/2 to 1½ Ton
R-410A Models MHC Standard Range &
MHW Geothermal Range
Size 007–018
Contents
Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . 3
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Features and Options . . . . . . . . . . . . . . . . . . . . .5-6
Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-10
Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Features-MicroTech III Unit Controller. . . . . . . . 8
Features-MicroTech III with I/O Expansion
Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Features-MicroTech III with Communication
Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-15
Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12
Considerations. . . . . . . . . . . . . . . . . . . . . . . . . 13
Typical Heating & Cooling Refrigeration
Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Unit Selection. . . . . . . . . . . . . . . . . . . . . . . . . . 15
Capacity Data . . . . . . . . . . . . . . . . . . . . . . . . . .16-35
Cooling Capacity - Size 007 . . . . . . . . . . . .16-17
Heating Capacity - Size 007 . . . . . . . . . . . .18-19
Cooling Capacity - Size 009 . . . . . . . . . . . .20-21
Heating Capacity - Size 009 . . . . . . . . . . . .22-23
Cooling Capacity - Size 012 . . . . . . . . . . . .24-25
Heating Capacity - Size 012 . . . . . . . . . . . .26-27
Cooling Capacity - Size 015 . . . . . . . . . . . .28-29
Heating Capacity - Size 015 . . . . . . . . . . . .30-31
Cooling Capacity - Size 018 . . . . . . . . . . . .32-33
Heating Capacity - Size 018 . . . . . . . . . . . .34-35
Performance Data. . . . . . . . . . . . . . . . . . . . . . .36-39
Water Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Ground Loop . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Ground Source. . . . . . . . . . . . . . . . . . . . . . . . . 36
Electrical - Standard Static Motor . . . . . . . . . . 37
Electrical - Standard Static Motor and
Optional Electric Heater . . . . . . . . . . . . . . . . . . 37
Electric Heater Current & Power . . . . . . . . . . . 37
Fan Performance . . . . . . . . . . . . . . . . . . . . . . . 38
Operating Limits. . . . . . . . . . . . . . . . . . . . . . . . 38
Additional Information for Start-Up . . . . . . . . . 38
Standard Range Units. . . . . . . . . . . . . . . . 38
Geothermal Range Units. . . . . . . . . . . . . . 38
Airflow Correction Factors . . . . . . . . . . . . . . . . 39
Antifreeze Correction Factors . . . . . . . . . . . . . 39
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Dimensional Data . . . . . . . . . . . . . . . . . . . . . . .40-43
Size
Right Hand Piping . . . . . . . . . . . . . . . . . . . . . . 40
Size 007-012 Flat Top-High Sill,
Left Hand Piping . . . . . . . . . . . . . . . . . . . . . . . 40
Size 007-012 Slope Top, Low Sill,
Right Hand Piping . . . . . . . . . . . . . . . . . . . . . . 41
Size 007-012 Flat Top, Low Sill,
Left Hand Piping . . . . . . . . . . . . . . . . . . . . . . . 41
Size 015-018 Slope Top, High Sill,
Right Hand Piping . . . . . . . . . . . . . . . . . . . . . . 42
Size 015-018 Flat Top, High Sill,
Left Hand Piping . . . . . . . . . . . . . . . . . . . . . . . 42
Size 015-018 Slope Top, Low Sill,
Right Hand Piping . . . . . . . . . . . . . . . . . . . . . . 43
Size 015-018 Flat Top, Low Sill,
Left Hand Piping . . . . . . . . . . . . . . . . . . . . . . . 43
Accessories (General) . . . . . . . . . . . . . . . . . . .44-49
Thermostats and Sensors . . . . . . . . . . . . . .44-47
Supply and Return Hoses . . . . . . . . . . . . . . . . 48
Combination Balancing and Shutoff Valves. . . 48
2-Way Motorized Valve . . . . . . . . . . . . . . . . . . 48
Piping Packages . . . . . . . . . . . . . . . . . . . . . . . 48
Outdoor Air Dampers . . . . . . . . . . . . . . . . . . . . 49
Extended End Pocket (Option) . . . . . . . . . . . . 49
Multiple Unit Control Panel (MUCP) . . . . . . . . 49
Typical Wiring Diagrams . . . . . . . . . . . . . . . . .50-52
Unit-Mounted - MicroTech III
Unit Controller for Sizes 007-015
208/230/60Hz/1-Phase . . . . . . . . . . . . . . . . . . 50
Unit-Mounted - MicroTech III Unit
Controller With Electric Heat for Size 018
208/230/60Hz/1-Phase . . . . . . . . . . . . . . . . . . 51
Unit-Mounted - MicroTech III Unit
Controller With BACnet Module for
All Units without Electric Heat
265/277/60Hz/1-Phase . . . . . . . . . . . . . . . . . . 52
Engineering Guide Specifications . . . . . . . . .53-55
007-012 Slope Top-High Sill,
2 McQuay Ennity Console Source Heat Pumps Catalog 1104-2
Model Nomenclature
NOTE: For illustration purposes only. Not all options available with all models.
Please consult your McQuay Sales Representative for specic availability.
W MHC 1 009 B E H B T 01 F2
Product Category
W = WSHP
Product Identier
MHC = Standard Range Console WSHP
MHW = Geothermal Range Console WSHP
Design Series
1 = A Design
2 = B Design
3 = C Design
4 = D Design
Nominal Capacity
007 = 7,000 BTU/h
009 = 9,000 BTU/h
012 = 12,000 BTU/h
015 = 15,000 BTU/h
018 = 18,000 BTU/h
Controls
B = MicroTech® III Unit Controller
C = MicroTech III Unit Controller w/LonWorks® Communication Module
D = MicroTech III Unit Controller w/BACnet® Communication Module
Voltage
A = 115/60/1
E = 208-230/60/1
J = 265/60/1
Cabinet Type
F = Flat Top
S = Slope Top
Discharge Grille
2 = Standard Stamped
Louver
3 = Multi-Directional Grille
Blower Motor
01 = Standard
Discharge Air
T = Top
Return Air
B = Bottom Return (High Sill)
F = Front Return (Low Sill)
Cabinet Height
H = High Sill
L = Low Sill
Console Water Source Heat Pumps – Sizes 007-018 (1/2 to 1½ Tons)
Model MHC (Standard Range: 55°F to 110°F)
Model MHW (Geothermal Range: 30°F to 110°F)
“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, Open
Choices, and MicroTech III from McQuay International.
Catalog 1104-2 McQuay Ennity Console Water Source Heat Pumps 3
Introduction
Ennity™ Water Source Heat Pumps
More than 30 years ago, McQuay designed the rst
complete line of water source heat pumps for high efcien-
cy, individually-zoned comfort control in ofces, schools,
assisted living facilities, manufacturing facilities and other
commercial buildings. Our reputation for outstanding reli-
ability and quiet operation has been reinforced in thousands
of successful installations.
Ennity water source heat pumps incorporate the best of
our past and the best of what’s new. Using feedback from
building owners, consulting engineers, contractors and ser-
vice engineers, we designed Ennity products to give you
maximum exibility to design, install, operate and maintain
the ideal water source heat pump system for your building
project. And we incorporated non-ozone depleting R-410A
refrigerant, which–along with high Energy Efciency Ra-
tios (EER’s)–helps preserve our environment and precious
energy resources.
Factory-installed, unit-mounted thermostats save time
and money versus installing wall-mounted thermostats.
Wide range of factory-installed options, including elec-
tric heat, motorized valves and thermostat options help
you meet more specic application requirements with
minimum design or installation time and expense.
Easy, Low-Cost Maintenance
Easy access to the unit compressor (end panel), fan
section and coil (front panel) and unit controls (left or
right end panel).
A easily removable blower motor allows the tangen-
tial fan wheel to remain in the housing during motor
replacement.
A hinged control box allows easy access to the piping
compartment.
With Ennity Water Source Heat Pumps,
you benet from:
High efciency that minimizes environmental impact
and lowers operating costs
Units exceed ASHRAE Standard 90.1 minimum
requirements
Standard range or geothermal application exibility
Engineered For Flexibility and Performance
Two cabinet sizes, each with McQuay’s subtle
aesthetic and small footprint design, make it easy to
meet the space requirements of your new construction
or replacement application.
MicroTech® unit controller with Open Choices™ fea-
ture allows easy, low cost integration with the Building
Automation System (BAS) of your choice.
Improved Efciency
35% greater efciency than the
minimum required by ASHRAE
90.1, for units less than 17,000 Btuh
per ISO Standard 13256-1 for
Boiler/Tower applications.
Quiet Operation
New Gentleo™ fan wheel allows the fan motor to
operate at lower speed for quieter operation.
High efciency rotary compressor mounted on a mass
plate system reduces noise due to vibration.
Superior Indoor Air Quality (IAQ)
Removable, non-corrosive and double-sloped polymer
drain pan promotes positive condensate drainage.
Optional closed-cell insulation prevents insulation
bers from entering the air stream.
R-410A Refrigerant With Zero Ozone Depletion Potential
or Phase-Out Date
R-410A is classied as A1/A1 – lower toxicity, no
ame propagation – per ASHRAE Standard 31.
4 McQuay Ennity Console Source Heat Pumps Catalog 1104-2
Console Unit Features & Options
1. Cabinets – Selectable at top or slope top cabinet
congurations with multiple grille options, including user
congurable, multi-directional grilles. Individual panels-
top,
front and end panels are designed for easy removal and
provides easy access to unit components for service and
maintenance. Optional extended cabinet end pocket for high
sill units, providing 11" of additional area inside the left or
right end pocket for piping or a eld-installed pump.
2
. Compressor - High efciency rotary type, using R-410A re-
f
rigerant with zero ozone depletion potential or phase-out date.
3. Gentleo™ Fan – User
selectable, multi-speed tangential fan
system provides high efciency and very quiet operation
suitable
for noise sensitive applications.
4. LED Annunciator – LED
status lights display fault conditions
to provide easy troubleshooting and diagnosis. Accessed by
removing the left or right end panel to the control enclosure.
5. Filter
– Units come standard with a 1/2" (12.7mm) thick
disposable lter that is easy to access and replace without
removing
panels.
6. Hinged Control Box– Provides added accessibility to
plumbing
end compartment for easier access for service.
7. 2-Way Motorized Valve Packages (Option) – Factory installed
or eld-installed for variable pumping applications. Other
valve options available upon request.
8. MicroTech® III Unit Controller – Designed for exibility, the
main control board is used in standalone applications. An
optional I/O expansion module can be used to control
electric
heat and multiple fan speeds. A separate optional-
L
onWorks® or BACnet® communication module can be
easily snapped onto the board to accommodate the building
automation system of your choice.
9. Double-Sloped Drain Pan
polymer
, promotes positive condensate drainage for superior
– Made of durable, non-corrosive
Indoor Air Quality (IAQ). Drain Pan is easy to remove for
cleaning.
Air Dampers (Field-installed Accessory) – Motorized or manually
operated
outside air dampers provide ventilation air.
Expanded Paint Colors – Color selections that compliment any
decor.
Cupola White Off White Antique Ivory
Putty Beige
Soft Gray Oxford Brown
MicroTech III Controller
I/O Expansion Module
L
onWorks
Module
BACnet
Module
(Discharge Grille
& Subbase)
Multi-Directional Grilles
Extended
(High Sill Units Only)
Provides 11" of additional area inside the
left or right end pocket.
Cabinet End Pocket
Catalog 1104-2 McQuay Ennity Console Water Source Heat Pumps 5
Console Design Features
Conguration
Console water source heat pumps are available in ve
cooling capacity sizes, from 1⁄2 through 1½ tons, (1757 to 5274
watts). Each is available in four different congurations.
Flat top units meet the traditional requirements for a rugged
unit. Slope top units offer a more modern look. The high
silhouette unit is 25" (635mm) high and the low silhouette unit
is only 22½" (572mm) high. The overall unit dimensions are
very compact; unit sizes 007 through 012 are 46" (1168mm)
long and sizes 015 through 018 are 54" (1372mm) long. All
units are a constant 10¾" (273mm) deep for minimum oor
space and a consistent “look” for all unit sizes.
All units incorporate a slide-out chassis concept which
allows it to be installed easily or removed and replaced quickly
when service is required to minimize downtime for the space
the unit serves. The cabinet is made up of individual panels,
each of which can be easily removed to expose the chassis for
eld hook-up of water and electrical connections. The chassis
easily slides off the subbase for service or changeout.
Cabinet
All cabinets are painted with optional Antique Ivory
or Cupola White baked enamel nish for an aesthetically
pleasing appearance that matches room decor. The discharge
grilles and subbase can be Oxford Brown or match the
cabinetry on at top or slope top units.
The shallow 22° slope top cabinet is constructed of 18-
gauge steel. The top and side corners and grille are constructed
of tough, impact-resistant ABS polycarbonate. The grille
extends to the front and sides for a smooth look as well as
providing a curtain stop in back. The discharge grilles can be
rotated to direct the air in an 11° angle from the vertical and
can be reversed for a 33° discharge angle. The control door has
a nger slot and simply lifts up for access to the thermostat.
Overall, the slope top unit allows minimal airow interference
from curtains and objects resting on the cabinet, while at the
same time providing a rugged, aesthetically pleasing look.
The flat top cabinet is constructed of 18-gauge steel
with grille options that meet basic needs with its rugged
construction and its 11° discharge angle.
Chassis
The chassis houses the fan section, refrigerant circuit and
controls. The air enters through the bottom of the chassis,
through the subbase or through the front panel in low sill
units.
The refrigeration system includes a rotary compressor,
reversing valve, coaxial heat exchanger, capillary tubes, air
coil, high and low side access valves, and safety controls.
Access to the compressor is through a removable end panel.
The compressor is isolated from the unit with external vibration
mounts, mass plate/viscoelastic dampening material and the
compartment is totally insulated to make the quietest console
unit on the market. Safety controls include low temperature
(freezestat) and refrigerant high pressure switches. The
control box is hinged for easy access to all of the controls.
The MicroTech III unit controller offers both standalone or
communicating (LonWorks or BACnet) control options.
Each uses a printed circuit board for clean wiring and a
low voltage control circuit with a 50 VA transformer. See
“Controls” section for more detailed information. Main power
is made to a chassis-mounted 2" x 4" (51mm x 102mm)
junction box.
The fan section employs McQuay's Gentleo tangential
system fan and efcient, two-speed PSC motor for selectable
airow and/or noise level. Access to the fan wheel is made
through the top panel. The motor is secured to the chassis
with three screws for easy service.
Water piping connections are 1⁄2" FPT ttings which
terminate in the outward position in the piping compartment
for easy access. Unique left- and right-hand piping (includes
condensate and electrical) locations are available. The 3⁄4"
(19mm) I.D. exible clear vinyl condensate drain tube is
internally trapped and extends 14" (356mm) into the piping
compartment for easy connection. Piping (electrical and
condensate also) can enter through the back wall or through
the oor within the subbase. The chassis allows for a piping
compartment between the chassis and the cabinet.
Optional Factory Installed Features
Boilerless system electric heat eliminates the need for a
boiler in the heat pump water loop. An electric heater is added
to the discharge side of the fan scroll. If the entering water
temperature falls to 58°F (15°C) the thermostat locks out
compressor operation. On a call for heat, the electric heater
is energized. When the entering water temperature raises,
the unit will resume compressor operation on a call for heat.
An emergency electric heat override plug allows for electric
heat, if the compressor (mechanical) heat should fail. Each
unit has various heater sizes to select from. Not available on
115 volt units. Not CSA listed.
Optional Extended End Pockets (High Sill Units)
Optional extended cabinet end pocket for high sill units,
provides 11" of additional area inside the left or right end
pocket for piping or a eld-installed pump.
Optional Multi-Directional Grilles
Selectable plastic Multi-Directional Grilles can rotate
90, 180 or 270 degrees for added control of discharge air
direction.
6 McQuay Ennity Console Source Heat Pumps Catalog 1104-2
Control Options – Control Choices And Added Functionality
The control box is accessible through the left or right end
corner panel. It houses the major operating electrical controls
including the MicroTech® III unit controller, transformer,
compressor relay and fan relay. Each component is easily
accessed for service or replacement.
Four unique control choices are offered with the Micro-
Tech III unit controller:
■ Standalone operation using a MicroTech III unit controller
■ MicroTech III unit controller with I/O Expansion module
■ MicroTech III unit controller with a Lonworks® commu-
nication module
■ MicroTech III unit controller with a BACnet® communica-
tion 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 50 VA transformer.
Control Description Application Protocol
MicroTech III
(Standalone)
Unit Controller
The MicroTech III unit controller is
a standalone microprocessor-based
control board conveniently located
in the unit control box for accessibil
. The board is designed to provide
ity
standalone control of a Water Source
Heat Pump using a wall thermostat
r a wall mounted temperature sen-
o
s
or. Each unit controller is factory
programmed, wired, and tested. For
added functionality an optional I/O
expansion
MicroTech III controller for complete
control
water source heat pump.
module interconnects to the
and operation of your McQuay
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- mounted
or wall-mounted
thermostat
I/O Expansion
Module
LonWorks
Communication
Module
BACnet
Communication
Module
The I/O Expansion Module is an extension of the Microtech III unit controller
and
provides additional functionality.
It is required on all units with an LED
annunciator
the boilerless electric heat feature.
The MicroTech III unit controller can
a
ccept a plug-in LonWorks communication module to provide network
communications and added functional
to easily integrate with an existing
ity
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 unit controller
can
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
and provides operation of
accept a plug-in BACnet commu-
control the unit.
Allows
for:
• Monitoring of entering water temperature for
boilerless electric heat control.
• Outputs for optional electric heat
.
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 com
munications
-
management of multiple heat pumps.
network for centralized scheduling and
onWorks com-
U
nit-m ounted
or wall-mounted
thermostat
onMark 3.4
L
BaCnet
-
7 McQuay Ennity Console Water Source Heat Pumps Catalog 1104-2
Control Features – MicroTech® III Unit Controller
The MicroTech III Unit 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 pro-
vides all the necessary eld connections. The board can be
wired for 24-volt AC output to the wall thermostat by using
terminals R & C. An LED annunciator is located on the front
corner of the unit chassis to quickly check the operating status
of the unit.
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, the compressor
and fan will start 0 to 30 seconds later. When the load is
satised, the compressor and fan shut off.
■ Heating Mode – On a call for heating, the reversing valve
is energized after 60 seconds and the compressor and fan
start. When the load is satised, the compressor and fan
shut off. The reversing valve is de-energized 60 seconds
later.
■ Short Cycle Protection & Random Start – Each time
the compressor stops, a new random compressor start-
delay time between 180 and 240 seconds is generated.
This prevents compressor short cycling and prevents units
from starting simultaneously after coming back from an
unoccupied cycle.
■ 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.
■ Override Mode – A switch on the deluxe automatic
changeover thermostat can be activated during the unoccupied 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 200 units.
■ Brownout Protection – The MicroTech III unit controller
measures the input voltage and will suspend compressor
and fan operation if the voltage falls below 80% of the
unit nameplate rated value. A unique LED status is generated and an output is available to a “fault” LED at the
thermostat.
■ 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 and an
output signal is made available for connection to a “fault”
LED at the thermostat.
■ Condensate Overow Protection – The MicroTech III
unit 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 and output
is available to a “fault” LED at the thermostat. Heating
operation is not suspended.
■ Remote Reset of Automatic Lockouts – The Remote Re-
set feature provides the means to remotely reset automatic
lockouts generated by high-pressure and/or low-tempera-
ture faults. When the MicroTech III unit 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
unit controller receives separate input signals from the
refrigerant high-pressure switch and the low suction line
temperature sensor. In a high-pressure situation, compres-
sor 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 and output is available to a “fault”
LED at the thermostat if either situation exists.
Note: Most unit fault conditions are the result of operating
the equipment outside the unit specications.
MicroTech III unit controller LED & fault outputs
Mode / Fault
Occupied, Bypass,
Standby
Override
Unoccupied On On Off Energized
Condensate Overow On Off Off De-energized
High Pressure 1 Fault
Low Pressure 1 Fault Off Off On De-energized
Low Temperature 1 Fault Flash Off Off De-energized
Brownout
Emergency Shutdown
Room/Return
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’
, or Tenant Off On Off Energized
Air or Low
1
ellow Green Red Output-Terminal “A”
Y
Off Off Flash De-energized
Off Flash Off De-energized
Off Flash Off De-energized
Flash Flash On De-energized
On On Off De-energized
On On On De-energized
Off Off Off De-energized
s
Thermostat Alarm Light
8 McQuay Ennity Console Source Heat Pumps Catalog 1104-2
Control Features – MicroTech III with I/O Expansion Module
I/O Expansion Module
The I/O Expansion Module is a factory installed option.
It is an extension of the MicroTech III unit controller and
provides extra functionality.
The I/O Expansion Module has 2 main purposes:
• The I/O Expansion Module has outputs to control
electric heat on a standard Water Source Heat Pump.
• The I/O Expansion Module has an independent LED
annunciator to identify operational fault conditions for
the electric heater.
I/O Expansion Module LED & Fault Outputs
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
Boilerless electric heat only
2
Alarm/fault LED indications take precedence over service test mode LED
Mode / Fault
Low Suction Temp #2 Fault Flash Off Off De-energized
Sensor Failures Low Suction
Low Suction
1
EWT (w/ Boilerless EH only)
2
Service Test Mode Enabled Flash Flash Flash De-energized
Normal Operation
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.
= Not used with Console Water Source Heat Pump unit.
Y
Temp #2, Flash Flash On De-energized
Off On Off De-energized
Status LED's
ellow Green Red
Flash Flash Off De-energized
Off Flash Flash N/A
Off On Off Energized
Terminal “A”
Thermostat Alarm
Light Output
I/O Expansion Module Conguration Jumper Settings
Jumper Description Options
JP1 Number of
JP2
Water Reheat Shorted to enable reheat
Compressors Shorted for dual compressor
Hot Gas/
Open for single compressor
Open to disable reheat
JP3 and JP4 open for no
supplemental heat
JP3 Supplemental JP3 open, JP4 shorted for
& JP4 Heat Type boilerless electric heat
JP3 and JP4 shorted is an
invalid setting
JP5 and JP6 open for single-speed fan
Fan Speed three-speed fan
JP5
JP5 open, JP6 shorted for
& JP6 Selection JP5 shorted and JP6 open for
two-speed fan
JP 5 and JP6 shorted is an
invalid setting
JP7
Speed Type Shorted for two-speed compressor
Compressor Open for single-speed compressor
JP8 Future Spare
= Not used with Console Water Source Heat Pump unit.
I/O Expansion Module Conguration Jumper Terminals
Jumper Terminals
Adding an I/O Expansion Module (with an interconnect
cable) to the unit controller allows the operation of
boilerless electric heat with the Console Water Source Heat
Pump.
Features
Standard Heat Pumps / Single Circuit Units
• Monitors entering water temperature for
boilerless electric heat control
Catalog 1104-2 McQuay Ennity Console Water Source Heat Pumps 9
Control Features – MicroTech III with Communication Module
MicroTech
orks or BACnet Communication Module
W
Each McQuay Console 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 Automation System (BAS).
The BACnet module is designed to communicate over a
BACnet MS/TP communications network 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 Console
Water Source Heat Pump. The MicroTech III unit 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 L
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.
®
III Unit Controller with Lon-
onWorks Communication Module
MicroTech III Unit Controller with Communication Modules
Features
The MicroTech III Unit 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 unit 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
Room sensor with LED status and tenant override
button
Room temperature sensor with LED status, timed-
MicroTech III BACnet Communication Module
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.
10 McQuay Ennity Console Source Heat Pumps Catalog 1104-2
override button, and ±3°F setpoint adjustment
Room temperature sensor with LED status, timed-
override button, 55° to 90°F setpoint adjustment
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 420,000 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 building. 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 towers 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 re-
quirements 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.
Open Loop Well Application
Boiler/Tower Application
Catalog 1104-2 McQuay Ennity Console Water Source Heat Pumps 11
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.
Vertical Loop Application
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 drain-
age 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.
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.
12 McQuay Ennity Console Source Heat Pumps Catalog 1104-2
Applications Considerations
Typical Console Installation
Unit Location
The Console Water Source Heat Pump is typically
installed on an exterior wall.
Locate a Console 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.
To reduce noise emissions, install a eld-provided 1/4
inch thick, rubber isolator pad below the entire base of the
unit. The pad should be equal to the overall foot-print size
of the unit to provide sound dampening of the unit while
in operation. The unit must sit at on the oor to prevent
unwanted noise and vibration.
Condensate Drain
The factory provided condensate drain trap on the
console unit is located inside the end cabinet. Condensate
removal piping must be 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.
McQuay has available optional re-rated exible hoses
to better facilitate supply and return piping connections.
These exible hoses reduce vibration between the unit and
the rigid piping system.
Fire Rated Supply or Return Hoses
Piping
The console water source heat pump 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 acts as a sound
attenuator for both the unit operating noise and hydronic
pumping noise. One end of the hose has a swivel tting to
facilitate removal of the unit for replacement 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.
Catalog 1104-2 McQuay Ennity Console Water Source Heat Pumps 13
@ 70° to 90° Radius
24" 400 psig 1200 psig 2½"
Hose Type
1/2" MPT
12"
Supply
& Return
Fixed End, MPT
Nominal
9"
18"
Max. Recommended
Length
Working Pressure
400 psig 1200 psig 2½"
400 psig 1200 psig 2½"
400 psig 1200 psig 2½"
Assembled Length
Minimum Minimum
Burst Pressure Bend
Female Swivel
Adapter
Applications – Systems
Typical Cooling and Heating Refrigeration Cycles
Note: For standard heat pump operation only
Cooling Refrigeration Cycle
When the wall thermostat calls
for COOLING, the reversing valve
directs the ow of the refrigerant, a
hot gas, from the compressor to the
water-to-refrigerant 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. 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 pressure gas through the reversing valve and back to the suction side
of the compressor to complete the
cycle.
Heating Refrigeration Cycle
When the wall thermostat calls
for HEATING, the reversing valve
directs the ow of the refrigerant, a
hot gas, from the compressor to the
air-to-refrigerant heat exchanger coil.
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. 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.
Air to
Refrigerant
Heat
Exchanger
Coil
Blower
Air to
Refrigerant
Heat
Exchanger
Coil
Blower
Return Air
Conditioned Air
(Cooling)
Return Air
Conditioned Air
(Heating)
Thermal
Expansion Valve
Reversing Valve
Thermal
Expansion Valve
Reversing Valve
Water to Refrigerant
Heat Exchanger
Water In
Water Out
Sensing
Bulb and
Capillary
Tube
Compressor
Water to Refrigerant
Heat Exchanger
Water In
Water Out
Sensing
Bulb and
Capillary
Tube
Compressor
14 McQuay Ennity Console Source Heat Pumps Catalog 1104-2
Applications – Unit Selection
Achieving optimal performance with water source heat
pump systems requires both accurate system design and
proper equipment selection. Use a building load program to
determine the heating and cooling loads of each zone prior
to making equipment selections. With this information,
the McQuay SelectTools™ software selection program for
Water Source Heat Pumps can be used to provide fast, ac-
curate and complete selections of all McQuay water source
heat pump products. SelectTools software is available by
contacting your local McQuay Representative.
While we recommend that you use McQuay SelectTools
software for all unit selections, manual selections can be
accomplished using the same zone load information and the
capacity tables available in this catalog.
Boiler / Tower Application Manual Selections:
The following example illustrates a typical selection for
a zone in a boiler/tower system for a commercial building.
A building load program determines that this zone needs
10,430 BTUH of total cooling, 6,950 BTUH of sensible
cooling and 9,150 BTUH of total heating. The water tem-
peratures for the boiler/tower system are 90ºF for cooling
and 70ºF for heating. The return air temperature is 80ºF dry
bulb with 67ºF wet bulb for cooling and 70ºF for heating.
Zone Requirements:
Total Cooling Load = 10,430 BTUH
Sensible Cooling Load = 6,950 BTUH
Total Heating Load = 9,150 BTUH
Air Flow Required = 275 CFM
Return Air Cooling = 80ºFDB/ 67ºFWB
Return Air - Heating = 70ºFDB
Since a McQuay Model MHC 009 produces approxi-
mately 10,000 BTUH of cooling, it is not sufcient for
this zone and a model MHC 012 should be considered.
Model MHC is chosen because it is specically designed
for a boiler/tower application. Typical water ow rates for
boiler/tower applications are 2.0 to 2.5 GPM per ton and in
this example no antifreeze is used.
Selection:
Model .............................MHC 012 (Boiler / Tower model)
Total Cooling Capacity @ 90 EWT = 11,511 BTUH
Sensible cooling capacity @ 90 EWT = 7,660 BTUH
Total Heating Capacity @ 70 EWT = 14,160 BTUH
CFM = 275
Water Flow required to meet capacity = 8 GPM
Water Pressure drop = 2.5 (FT. H2O)
Final Selection ....................................................MHC 012
Geothermal Applications:
The following example illustrates the same zone in a
geothermal application.
The load requirements for the zone are the same as the
above example – 10,430 BTUH of total cooling and 6,950
BTUH of sensible cooling and 9,150 BTUH of heating.
Geothermal loop software programs are available to help
determine the size of the loop eld based on:
Desired entering water temperatures for the system.
Specic acreage available for the loop which produces
specic min./max loop temps for the unit selection.
Entering water temperatures for geothermal systems can
be as high as 90º to 100ºF and as low as 30ºF based on the
geographical location of the building. Water ow rates are
typically 2.5 to 3 GPM per ton and the use of antifreeze is
required in most northern applications.
Zone Requirements:
Total Cooling Load = 10,430 BTUH
Sensible Cooling Load = 6,950 BTUH
Total Heating Load = 9,150 BTUH
Air Flow Required = 275 CFM
Return Air Cooling = 80 DB / 67 WB
Return Air - Heating = 70 DB
A McQuay Model MHW is chosen for this geothermal
application. Model MHW offers insulated water piping for
condensation considerations and a different freezestat setting to allow entering water temperatures lower than 40ºF
(with antifreeze). Output capacities should be recalculated
using the antifreeze reduction tables that are shown on page
34. The Model MHW 012 is rst considered but may not
meet the heating load because of the reduced entering water
temperatures (35ºF) and an antifreeze solution of 21 %
propylene (see page 39).
Selection:
Model ..................................MHC 012 (Geothermal model)
Total cooling capacity @ 100 EWT = 10,555 BTUH x
.980 = 10,344
Sensible cooling capacity @ 100 EWT = 7,257 BTUH x
.980 = 7,112
Total heating capacity @ 35 EWT = 9,430 BTUH x .975 =
9,240 Btuh
CFM = 284
Water Flow required to meet capacity = 2.4 GPM
Water Pressure drop = 2.5 x 1.5 = 3.75 (FT. H2O)
Final Selection ....................................................MHC 012
Note:
In applications where the zone may be a corner ofce or have
excessive glass area, the heating load could be greater than the
heating output capacity of the MHC 012 model (say 7,800 BTUH).
The choices are to upsize the unit to the next model available (015).
15 McQuay Ennity Console Water Source Heat Pumps Catalog 1104-2
Cooling Capacity Data – Console Unit Size 007
EWT
30
40
50
60
70
80
85
90
GPM
1.0
1.
2.0
1.0
1.5
2.0
1.0
1.5
2.0
1.0
1.5
2.0
1.0
1.5
2.0
1.0
1.5
2.0
1.0
1.5
2.0
1.0
1.5
2.0
WPD
0.6
5
1.
3
2.2
0.6
1.3
2.2
0.6
1.3
2.2
0.6
1.3
2.2
0.6
1.3
2.2
0.6
1.3
2.2
0.6
1.3
2.2
0.6
1.3
2.2
EA LWT TOT SEN kW EER TOT kW EER THR
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
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
50
52.1
53.5
43.9
44.8
45.8
40.5
41.2
41.9
60.3
61.7
63.2
53.7
54.7
55.7
50.3
51.1
51.8
69.9
71.3
72.8
63.5
64.4
65.4
60.2
60.9
61.6
79.4
80.8
82.3
73.2
74.1
75.1
69.9
70.7
71.4
88.9
90.2
91.6
82.8
83.7
84.7
79.7
80.4
81.1
98.3
99.6
101.0
92.4
93.3
94.3
89.4
90.1
90.8
103.1
104.3
105.7
97.2
98.1
99.0
94.2
94.9
95.6
107.7
109.0
110.3
102.0
102.9
103.8
99.1
99.7
100.4
System ISO
9791
.7
10556
11371
10000
10792
11642
10085
10892
11759
9368
10106
10891
9583
10352
11173
9673
10456
11291
8931
9639
10393
9149
9889
10679
9240
9995
10802
8487
9163
9882
8702
9412
10169
8793
9518
10292
8041
8680
9365
8251
8925
9648
8340
9030
9769
7596
8199
8842
7800
8434
9117
7885
8534
9237
7369
7958
8582
7573
8191
8852
7657
8289
8968
7139
7713
8319
7342
7946
8587
7426
8043
8702
7001
7188
7356
7099
7291
7464
7139
7334
7510
6806
6998
7169
6905
7101
7278
6946
7145
7324
6609
6804
6980
6707
6907
7089
6748
6951
7135
6409
6607
6789
6506
6710
6897
6547
6754
6942
6209
6409
6595
6303
6510
6700
6342
6553
6746
6013
6215
6403
6103
6310
6503
6140
6350
6547
5915
6119
6308
6003
6212
6406
6040
6251
6448
5815
6022
6213
5903
6114
6310
5939
6152
6351
.186
0
0.163
0.136
0.143
0.112
0.076
0.129
0.095
0.055
0.268
0.254
0.237
0.233
0.212
0.187
0.221
0.197
0.169
0.338
0.333
0.324
0.309
0.296
0.280
0.299
0.284
0.266
0.398
0.399
0.398
0.373
0.369
0.362
0.365
0.359
0.349
0.452
0.456
0.461
0.429
0.431
0.431
0.422
0.422
0.420
0.507
0.514
0.520
0.484
0.488
0.492
0.477
0.480
0.483
0.533
0.542
0.551
0.512
0.518
0.522
0.505
0.510
0.513
0.557
0.569
0.580
0.538
0.547
0.553
0.532
0.539
0.544
52.6
64.9
83.4
69.8
96.3
153.0
78.0
114.6
214.6
35.0
39.7
45.9
41.1
48.9
59.9
43.7
53.0
66.9
26.4
29.0
32.1
29.6
33.4
38.1
30.9
35.2
40.7
21.4
23.0
24.8
23.3
25.5
28.1
24.1
26.5
29.5
17.8
19.0
20.3
19.2
20.7
22.4
19.8
21.4
23.3
15.0
16.0
17.0
16.1
17.3
18.5
16.5
17.8
19.1
13.8
14.7
15.6
14.8
15.8
16.9
15.2
16.3
17.5
12.8
13.6
14.3
13.6
14.5
15.5
14.0
14.9
16.0
9517
10282
11098
9727
10519
11369
9812
10619
11486
9094
9833
10618
9310
10079
10900
9400
10183
11017
8658
9366
10120
8876
9616
10406
8967
9722
10528
8214
8890
9609
8429
9139
9896
8520
9244
10019
7768
8407
9092
7978
8652
9375
8066
8757
9496
7323
7926
8569
7527
8161
8844
7611
8260
8964
7096
7685
8309
7300
7918
8579
7384
8016
8695
6866
7440
8046
7069
7673
8314
7153
7770
8429
.187
0
0.163
0.137
0.146
0.115
0.079
0.136
0.101
0.061
0.269
0.255
0.238
0.236
0.215
0.189
0.227
0.204
0.175
0.339
0.334
0.324
0.312
0.299
0.283
0.305
0.290
0.272
0.398
0.399
0.399
0.376
0.372
0.365
0.371
0.365
0.356
0.453
0.457
0.462
0.432
0.434
0.434
0.428
0.429
0.426
0.508
0.515
0.521
0.487
0.491
0.495
0.484
0.487
0.489
0.534
0.543
0.551
0.515
0.521
0.525
0.512
0.516
0.520
0.558
0.570
0.581
0.541
0.549
0.556
0.538
0.546
0.550
50.9
62.9
80.9
66.6
91.5
144.0
72.3
104.7
187.8
33.8
38.5
44.6
39.5
47.0
57.6
41.3
50.0
62.9
25.5
28.1
31.2
28.5
32.1
36.7
29.4
33.5
38.7
20.6
22.3
24.1
22.4
24.6
27.1
23.0
25.3
28.2
17.2
18.4
19.7
18.5
20.0
21.6
18.8
20.4
22.3
14.4
15.4
16.4
15.5
16.6
17.9
15.7
17.0
18.3
13.3
14.1
15.1
14.2
15.2
16.3
14.4
15.5
16.7
12.3
13.1
13.8
13.1
14.0
15.0
13.3
14.2
15.3
10232
10922
11651
10318
11012
11747
10364
11063
11802
10046
10739
11468
10162
10862
11602
10217
10924
11669
9815
10503
11224
9946
10647
11384
10009
10716
11464
9542
10219
10935
9687
10384
11117
9756
10460
11201
9248
9901
10598
9395
10074
10796
9465
10155
10887
8956
9581
10244
9099
9745
10438
9165
9823
10533
8801
9419
10069
8948
9584
10260
9014
9661
10350
8637
9248
9889
8790
9419
10081
8857
9496
10171
16 McQuay Ennity Console Water Source Heat Pumps Catalog 1104-2
Cooling Capacity Data – Console Unit Size 007
EWT
GPM
1.0
1.
100
5
2.0
1.0
110
1.5
2.0
Capacity Tables Notes:
EWT = Entering Water Temperature (°F) WPD = Water Pressure Drop (Ft. Hd) EA = Entering Air Temperature (°F)
LWT = Leaving Water Temperature (°F) TOT = Total Heat (Btu) SEN = Sensible Heat (Btu) kW = Kilowatts
COP = Coefcient of Performance THA = Total Heat of Absorption (Btu) THR = Total Heat of Rejection (Btu) GPM = Gallons Per Minute
Performance data based on 208/1ph power supply.
WPD
0.6
1.
2.2
0.6
1.3
2.2
3
EA LWT TOT SEN kW EER TOT kW EER THR
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
75
80
85
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
63
67
71
17.1
1
118.3
119.6
111.6
112.4
113.3
108.8
109.4
110.1
126.3
127.5
128.7
121.1
121.9
122.8
118.4
119.0
119.7
System ISO
6669
7212
7784
6870
7443
8050
6953
7539
8162
6185
6694
7231
6382
6923
7495
6463
7018
7606
5615
5826
6023
5700
5916
6117
5735
5953
6157
5410
5626
5830
5493
5715
5921
5527
5751
5960
.602
0
0.619
0.634
0.585
0.599
0.611
0.580
0.593
0.604
0.641
0.663
0.684
0.628
0.647
0.663
0.624
0.641
0.656
11.1
11.7
12.3
11.7
12.4
13.2
12.0
12.7
13.5
9.7
10.1
10.6
10.2
10.7
11.3
10.4
10.9
11.6
6396
6939
7511
6597
7170
7777
6680
7266
7888
5912
6421
6958
6109
6650
7222
6190
6745
7332
.603
0
0.619
0.635
0.588
0.602
0.614
0.587
0.599
0.610
0.642
0.664
0.685
0.631
0.649
0.666
0.630
0.647
0.663
10.6
11.2
11.8
11.2
11.9
12.7
11.4
12.1
12.9
9.2
9.7
10.2
9.7
10.2
10.8
9.8
10.4
11.1
8286
8881
9503
8444
9060
9706
8513
9139
9797
7902
8481
9083
8066
8667
9293
8138
8749
9385
17 McQuay Ennity Console Water Source Heat Pumps Catalog 1104-2
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