McQuay WHR 017EA User manual

Type
User manual
Product Manual
PM WHR-2
Group: Chiller
Effective: May 2000
Supersedes: PM WHR-1
© 1997 McQuay International
Reciprocating Chillers
WHR 017EW To WHR 210EW, Packaged Water-Cooled
WHR 017EA To WHR 210EA, Remote Condenser
17 to 210 Tons, 60 to 740 kW
R-22, R134a
60 Hz
2 WHR 017E - 210E Product Manual WHR-2
Table of Contents
Introduction......................................................................................................................................3
Features and Benefits.....................................................................................................................4
Design Advantages ..........................................................................................................................6
Temperature Control ......................................................................................................................9
Standard Control.......................................................................................................................9
Optional Control........................................................................................................................9
Optional Network Master Panel............................................................................................12
Optional Remote Monitoring and Sequence Panel............................................................12
Monitor software.....................................................................................................................13
Open Protocol..........................................................................................................................13
MicroTech BACdrop Gateway..........................................................................................13
Selection Procedure......................................................................................................................14
EW Water-Cooled, R-22.........................................................................................................14
EW Water-Cooled, R-134a.....................................................................................................15
EA Remote Condenser, R-22.................................................................................................15
EA Remote Condenser, R-134a .............................................................................................17
Selection Adjustment Factors .....................................................................................................17
Ethylene and Propylene Glycol Factors...............................................................................17
Evaporator and Condenser Delta-T Factors .......................................................................18
Fouling Factor..........................................................................................................................18
Performance Data..........................................................................................................................19
EW Water-Cooled...................................................................................................................19
Part Load Data (EW Only).....................................................................................................25
EA Remote Condenser...........................................................................................................26
Pressure Drop Curves..................................................................................................................30
Electrical Data................................................................................................................................33
Field Wiring Diagram..............................................................................................................44
Physical Data..................................................................................................................................45
EW Water-Cooled...................................................................................................................45
EA Remote Condenser...........................................................................................................50
Dimensional Data..........................................................................................................................53
EW Water-Cooled...................................................................................................................53
EA Remote Condenser...........................................................................................................57
Sound Data......................................................................................................................................61
Application Data.............................................................................................................................65
Optional Features..........................................................................................................................69
Optional Remote Monitoring and Sequencing Panel (RMS)............................................69
Product Specifications..................................................................................................................71
Water-Cooled, WHR 017 through 030.................................................................................71
Water-Cooled, WHR 040E through WHR 210E..................................................................75
Remote Condenser Chiller, WHR 017 through 030............................................................80
Remote Condenser Chiller, WHR 040E - WHR 210E..........................................................84
Our Facility is
"McQuay" is a registered trademark of McQuay International
1997 McQuay International
"Illustrations cover the general appearance of McQuay International products at the time of publication and we
reserve the right to make changes in design and construction at anytime without notice"
ARI Certification Applies to EW
Water-Cooled Units Only
Product Manual WHR-2 3
Introduction
McQuay International offers a complete line of water-cooled chillers from 17 to 2500 tons (60
to 8800 kW) utilizing reciprocating and centrifugal compressors.
The WHR packaged reciprocating compressor chillers are a product of the McQuay
commitment to offer energy efficient equipment design. A design approach carefully
combining high quality compressors, efficient shell-and-tube heat exchangers, and state-of-
the-art controls into a unit of uncompromised operating efficiency and reliability.
Model WHR-EW are equipped with factory-mounted water-cooled condensers.
Model WHR-EA have no condensers mounted and are intended for use with remote
evaporative or air-cooled condensers. See McQuay catalog PM ACAQ for a complete line of
matching air-cooled condensers.
ARI Standard 550/590-98 Certified
The ARI Certification Program does not include chillers with remote condensers.
Therefore, Model WHR-EA, Remote Condenser Chillers, ratings are not ARI certified.
Model WHR-EW, Water-Cooled Chillers are ARI certified.
Efficiency
WHR-EW are in compliance with ASHRAE 90.1
Cross-circuit compressor unloading
Liquid subcooling
Copeland DISCUS
compressor
Maximum capacity reduction
Reliability
Rugged compressor design
Factory installed operating and safety controls
Flexibility
Complete factory assembly
25 available sizes
Factory installed options
Serviceability
Semi-hermetic compressors
Suction and discharge service valves
Dual refrigerant circuits (WHR040 and above)
Full Factory Testing
Assures trouble-free start-up and operation
4 Product Manual WHR-2
Features and Benefits
Efficiency
WHR-EW Water-Cooled and WHR-EA Air-Cooled, (depending on remote condenser selection) meet
ASHRAE 90-1 efficiency levels - the world’s standard for chiller efficiency.
The “E” vintage WHR-EA reciprocating chillers offer some of the highest operating efficiencies
available today through the use of highly efficient components and efficiency oriented packaging.
Operating economy at reduced load is increased by operating each refrigerant circuit partially
unloaded, rather than one circuit off and the other circuit fully loaded. At unloaded conditions each
compressor will operate at lower compression ratios with substantial power savings.
Optional steps of capacity reduction are accomplished by the most efficient method of cylinder
unloading in the industry today.
To McQuay, operating economy means more than just energy efficiency. The WHR chillers reduce
operating costs not only through energy efficiency, but by offering high unit reliability, easy
serviceability, full factory testing and the backing of a factory trained sales, service and parts
organization.
Flexibility
The WHR chillers come in 25 sizes between 17 and 210 nominal tons (60 and 710 kW). The small
capacity increments provide a selection that will closely match the required job capacity.
The WHR water chillers come completely factory assembled, piped, wired, and shipped in one piece;
ready for water piping and wiring connections. The EA remote condenser models are ready for field
piping to the remote condenser. Single main supply power terminal block can be supplied by one field
installed main supply power disconnect switch.
Many optional features can been added to fit your needs. A unit mounted non-fused disconnect
switch eliminates the need for a field installed disconnect. Phase failure/reversal protection, high
return water unloading, and acoustical sound enclosures around compressor are all optional features
that can be factory installed.
Reliability
The McQuay WHR chillers use the most advanced and efficient reciprocating compressors in the
industry, the Copeland DISCUS valve compressors. These heavy-duty, industrial quality, semi-
hermetic compressors are designed for R 22 or R-134a.
All WHR chillers are factory run tested to assure unit functionality. All safety and operating controls
are checked and calibrated. Chillers for remote condensers are connected to slave condensers for
testing purposes. This extensive testing assures trouble-free start-ups.
To protect the unit from abnormal operating conditions, a complete set of safety controls for each
circuit is used. Safety controls include compressor crankcase heater(s), freeze protection
pressurestats (manual reset), oil switches (manual rest), high pressure safety switches (manual reset),
and compressor motor overload protectors. Standard operating controls include time delay relays for
20-second sequence starting of compressors, manual pumpdown switches, low pressure controls,
compressor lead-lag switches (WHR-040EW-210EW) and chilled water temperature controller. All
controls and wiring are completely factory labeled for ease of service.
Product Manual WHR-2 5
Serviceability
Semi-hermetic, 1750 rpm induction type motors are employed. The motors are refrigerant gas cooled.
A finned motor housing helps dissipate motor heat. Solid-state modules in the motor terminal box
respond to temperature sensors imbedded in all three motor windings to provide inherent thermal
overload protection for all run and start conditions.
Serviceable compressors offer reduced
maintenance costs because if problems
develop with components such as oil
pumps, unloaders, and pistons, they
can be serviced in the field without
replacing the compressor. Both suction
and discharge service valves are
provided to allow isolation of the
compressor from the refrigerant circuit.
All multiple compressor units utilize
two independent refrigerant circuits.
Dual refrigerant circuits permit
shutdown and routine maintenance and
service of one circuit while the second
circuit maintains system operation
where two or more compressors are
supplied.
Refrigerants
Models WHR 017 through WHR 210 utilize R-22 as the standard refrigerant. Models WHR 040
through WHR 210 can be furnished with R-134a refrigerant.
Full factory testing
Extensive quality control checks and individual performance tests assure that the units will meet the
requirements of the application and start-up and perform reliably. EA remote condenser models are
shipped with a holding charge of refrigerant, EW water-cooled units are shipped with a complete
operating charge.
Each unit is pressure tested, evacuated and charged with refrigerant for test purposes. Extensive
quality control checks and individual unit performance tests, at full load, ensure that each control is
properly adjusted and operates correctly. EA remote condenser models are connected to factory slave
condensers for testing. Each unit is then rechecked for refrigerant leakage.
Code Approvals
All WHRhb units are constructed and/or rated with the latest ANSI/ASHRAE 15 Safety Code,
National Electrical Code and ASME Boiler and Pressure Vessel Code. All models are ETL approved or
cETL listed.
6 Product Manual WHR-2
Design Advantages
Unit Arrangements
The McQuay water chillers are completely factory assembled, piped, wired and shipped in one piece,
ready for field connection of refrigerant (EA models) and water piping. Each unit consists of motor
compressors, insulated DX cooler and centralized electrical control panel containing all necessary
safety and operating controls, and compressor starting controls. Arrangement “EW” units come
complete with water-cooled condensers with integral subcooler circuits. Arrangement “EA” units are
provided without condensers to allow for remote installation of air-cooled or evaporative condensing
equipment.
Compressors
WHR chillers use Copeland DISCUS
semi-hermetic compressors. These compressors are designed
for R 22 and R-134a.
Semi-hermetic, 1750 rpm induction type motors are used. The motors are refrigerant gas cooled. Solid-
state modules in the motor terminal box respond to temperature sensors imbedded in all three motor
windings, providing inherent thermal overload protection for all run and start conditions.
The compressor housing is constructed from close grained, high nickel content, alloy cast-iron with
no bolted joint between the motor and compressor. The housing includes a cast-iron cylinder head
and stator cover, and a crankcase oil sightglass. A suction strainer built into the compressor in the gas
stream between the suction service valve and the motor, filters out foreign and abrasive particles. An
internal relief valve relieves discharge pressure to the suction side for safety protection at high
compression ratios as required by ANSI/ASHRAE 15 Safety Code.
Main bearings are solid cast bronze insert type with oversized bearing area resulting in ultra-low
bearing loading.
The crankshaft is die-forged, high strength iron alloy with integral counterweights, statically and
dynamically balanced for smooth operation.
Connecting rods are lightweight aluminum with integral bearing surfaces on the crankshaft and piston
ends. Pistons are close grain cast iron with oil and compression rings. Piston pins are full floating
type for long life.
Compressors have a forced-feed lubrication system with positive oil displacement, a reversible oil
pump, and an operating oil charge. The pump feeds oil through rifle-drilled passages in the crankshaft
to all bearing surfaces. Magnetic plugs trap particles that enter the crankcase. The oil supply filters
through a large area oil strainer. During start-up, a crankcase heater minimizes oil being diluted by
refrigerant.
Factory Installed Liquid Line Components
Each refrigerant circuit has a filter-drier, liquid line sightglass/moisture indicator, solenoid valve,
manual liquid line shutoff valve and thermal expansion valve.
Short Circuit Protection
(WHR 017 through 030, WHR 095 through 210)
Each compressor is individually protected against short circuit and locked rotor conditions by factory
installed circuit breakers. Separate fusing protects the control circuit. WHR-040 through 090 can have
circuit breakers factory installed as an option.
Product Manual WHR-2 7
Part Load Efficiencies
Part load efficiencies and Integrated Part Load Values (IPLV) for EW units are calculated according to
the requirements of the latest ARI Standard 550/590-98 and meet or exceed ASHRAE Efficiency
Standard 90.1. Since most air conditioning systems operate at less than design full load a majority of
the time, IPLV is an excellent method for comparing chillers' efficiencies.
Noise
All McQuay WHR chillers are equipped with hot gas discharge line mufflers in each refrigerant circuit
to reduce the overall sound levels. An optional insulated acoustical compressor enclosure to further
reduce sound levels is also available for most units. Sound level ratings are contained in the Sound
Rating section of this manual.
Unit Base
Designed for easy handling, the units are mounted on a compact, rugged formed steel base. Isolator
mounting holes are provided.
Electrical Control Center
Shipped with all operating and safety controls and motor starting equipment factory wired,
operationally tested, and ready for operation. All controls are centrally located in a hinged control
center with keylocked doors.
Part-winding starters are standard on 208/230 volt applications and available as a special on 460/575
volts. Across-the-line starters are standard on 380/460/575 volts.
A five-minute, solid-state lockout timer is provided to delay compressor restart after safety cutout or
power interruption, or under irregular cooling load demands. A lead lag switch is standard on all units
(WHR 040 – WHR 210) not incorporating the single circuit hot gas bypass option.
Evaporator
The evaporator is a direct expansion, shell-and-tube type with water flowing in the baffled shell side
and refrigerant flowing through the tubes.
The evaporator is constructed with a carbon steel shell and seamless high efficiency copper tubes,
roller expanded into heavy carbon steel tube sheets. Water baffles are polypropylene to resist
corrosion.
Refrigerant heads are carbon steel with multi-pass baffles to ensure oil return and are removable to
permit access to the tubes from either end. For water removal, 3/8" (10mm) vent and drain plugs are
provided on the top and bottom of the shell. Two 1/2” (12.7mm) couplings on each water nozzle allow
for easy field installation of sensor equipment.
The evaporator is wrapped with 3/4” (19.1mm) thick vinyl nitrate polymer sheet insulation. The
insulation has a K factor of 0.28 at 75°F (24°C). The insulation is fitted and cemented in place, then
painted with a resilient vinyl base paint to resist cracking.
The tube side maximum working pressure is 225 psig (1552kPa). The waterside working pressure is 175
psig (1206kPa). All evaporators are designed, constructed, inspected and stamped according to the
requirements of the ASME Boiler and Pressure Vessel Code.
8 Product Manual WHR-2
Water-Cooled Condensers
All water-cooled condensers are cleanable shell and tube type with water in the tubes and refrigerant
in the shell. Each condenser is capable of holding the circuit pumpdown capacity. Independent
condensers serve the dual refrigerant circuits.
Each condenser is constructed with a carbon steel shell and seamless integrally finned high efficiency
copper tubes roller expanded into steel tubesheets. Water heads have vent and drain connections
and are removable. Also included is a liquid shutoff valve, purge valve, 450 psi (3104 kPa) relief valve
per ANSI/ASHRAE Pressure Vessel Code, Section VIII.
Water side working pressure is 225 psi (1550 kPa), refrigerant side is 450 psi (3104 kPa).
Air-Cooled Condensers
The WHR-EA chillers are designed for use with
properly sized and configured remote air-cooled or
evaporative condensers. The McQuay AC/AQ line of
air-cooled condensers are designed for use with these
chillers. The AC/AQ condensers are available with
single or double row vertical discharge fans and are
fully described and rated in Product Manual PM
ACAQ. They are packed with features offering
tangible benefits to owners.
Complete range of capacities from 10 to 210 tons
Circuits matched to WHR chillers
Direct drive fan motors at 1140 and 830 RPM
Patented floating tube design to eliminate tube sheet leaks
High efficiency coil and fan motor design
Internal baffles between all fan cells
Weatherproof control panel with door mounted disconnect switch
G90 painted galvanized steel cabinets
Single point power connection
Independent fusing and contactors for each fan motor
Integral pre-piped subcooler circuit
Product Manual WHR-2 9
Temperature Control
The McQuay WHR-040EW through 210EW water chillers are available with any one of three
different temperature controls to satisfy your requirements: 1) the standard microprocessor leaving
water controller, 1a) the same controller but with an indicator light package, and 2) the MicroTech
Controller.
Standard Control
WHR-017 - 030
A return water electromechanical temperature controller is supplied on the WHR-17 through 030
when supplied with two stages. Three stage units are supplied with a solid state, return water
temperature controller.
On Model EA units for remote condensers this controller is equipped with terminals from which the
first fan motor can be energized on compressor start. These sizes have a single refrigerant circuit.
WHR 040 - 210
The UNT-33 microprocessor leaving water temperature controller is standard on all units from size
040 to 210 and provides precise temperature control based on leaving water temperature. The
control is preset and calibrated and no other adjustment is required other than setpoint. There is a
60 second interstage On Delay between stages. Each stage incorporates minimum on and off timers
with a maximum cycle rate of six cycles per hour. Reset of supply water temperature can be
accomplished from outside air temperature, zone temperature or a signal from an EMS system.
Condenser fan control (Model EA)
Some means of controlling discharge pressure is required on condensers applied to the WHR-EA
remote condenser units. The McQuay AC/AQ air-cooled condensers can be equipped with
pressure activated fan cycling switches or with variable speed drives. Neither method requires
interconnecting wiring between the chiller and condenser.
Optional Control
Optional Zone Terminal for use with the UNT Control
Provides for onboard (or remotely wired) monitoring or adjusting of certain functions.
Monitoring
Monitor up to three setting or sensed values
Monitor 18 different on/off inputs
Monitor alarm status via a flashing alarm light and flashing symbol
Adjusting, allows adjustment of any flashing set points, three at a time, typically set up so that
the relationship between values can be viewed simultaneously. For example:
Display 1 = Lvg Water temp
Display 2 = Lvg Water SP
Display 3 = % Unit Load
10 Product Manual WHR-2
Figure 1, Zone Terminal Configuration
MONITOR
ADJUST
TIME SCHEDULE
PASSWORD
ENTER
Compressor 1
Compressor 2
Stage 3
Stage 4
Solenoid #1
Frzstat#1Alm
Frzstat#2Alm
MinLowPres#1
MinLowPres#2
Occupied
Flow Failure
OA Lockout
Cir#2Lead=On
Pmp/Stp #1=0
Lvg Water Temp
Evap Pres #1
Evap Pres #2
OA/AI3 Input
LvgWtr RBnd SP
Contrl Band SP
Actual Lvg SP
Unoccpd Lvg SP
OA Lockout SP
Lvg Low Lim SP
SoftSta Capcty
Cir #1 Starts
Cir #2 Starts
McQuay AGZ/AGR Global Chiller
INSERT 10
ON OFF
Display
Button 1
Mode
Selector
Panel
Mode
Selector
Button
2
AGZ-AGR
Display Indicator Dot
On/Off Status
3
Operating Mode Indicator
Up/Down Arrow Keys
Door
Display Item List
Warning Signal
ALARM
OA/AI3 HiLimSP
OA/AI3 ResetSP
Display Area 11
Display Area 21
Display Area 31
Alarm Light
Lvg Water SP
% Unit Load
SoftStart Time
Pmp/Stp #2=0
Solenoid #2
Stage 5 Opt.
Stage 6 Opt.
Optional MicroTech Chiller Controller
WHR-040 – 210 Only
The MicroTech reciprocating chiller controller surpasses all other microprocessor-based chiller
control systems available today. This powerful, user-friendly control system provides the flexibility
and performance needed for a stand-alone unit as well as multiple units tied into a network system.
MicroTech’s state-of-the-art design will not only permit your chiller to run more efficiently, but will
also simplify troubleshooting if a system failure occurs. Every MicroTech controller is programmed
and tested prior to shipment to ensure a trouble-free start-up.
Condenser fan control (Model EA)
Control of condenser fans is available through the MicroTech controller. The control steps
condenser fans or groups of fans based on discharge pressure. Field wiring is required between
the chiller and the remote condenser.
Product Manual WHR-2 11
Operator-friendly
The 12-key, touch-sensitive, membrane keypad and 32-character display makes the MicroTech
system especially user-friendly. Inch-pound or SI units are optionally available.
The MicroTech menu structure is separated into three distinct categories, which provide the
operator or service technician with a full description of current unit status, control parameters, and
alarms. Security protection prevents unauthorized changing of the setpoints and control
parameters.
MicroTech continuously performs self-diagnostic checks, monitoring all system temperatures,
pressures and safeties, and will automatically shutdown a compressor, a refrigerant circuit of the
entire unit should a fault occur. The cause of the shutdown will be retained in memory and can be
easily displayed in plain English or metric units for operator review. The MicroTech chiller
controller can also retain and display the time the fault occurred and the operating conditions that
were present at the time of the fault, which is an extremely useful feature for troubleshooting. In
addition to displaying alarm diagnostics, the MicroTech chiller controller also provides the operator
with a warning of pre-alarm conditions.
Ice storage
The MicroTech control easily changes the leaving fluid setpoint via a remote signal to the
controller. The feature enables selection of chilled water or ice storage mode.
Enhanced chiller operating efficiencies
The MicroTech chiller controller offers many features to improve the operating efficiency of the
reciprocating chiller. In addition to monitoring water temperature and air temperatures, refrigerant
temperatures and pressures, and unit amperage, MicroTech also offers the following energy saving
features:
Programmable setpoints
The MicroTech chiller controller offers precise digital settings of the leaving chilled water
temperature setpoint and all other control parameters. This is extremely important in the setting of
safeties such as low leaving water temperature cutout, high pressure cutout, suction pressure
cutout, and freeze protection.
Compressor soft loading
Soft loading limits the number of cooling stages to prevent unnecessary electrical demand and
possible overshoot of the leaving chilled water temperature setpoint.
Demand limit control
Based on a 4-20mA DC signal, the controller will determine the maximum number of stages permitted
to operate, preventing additional demand charges during high usage periods.
12 Product Manual WHR-2
Automatic circuit lead-lag
With the keypad, the operator can manually select either refrigerant circuit for the lead position or
the controller will automatically select the lead circuit based on the circuit with the fewest operating
hours.
Time clock, daily and holiday start/stop control
The operator can program daily start/stop schedules including weekends and up to fourteen
separate holidays without the need of an external time clock or EMS interface. If desired, an
external time clock can be used instead of the internal schedule.
Chilled water pump control
There is no need for an external time clock or EMS interface to control the pump start/stop
operation. The MicroTech chiller controller can accomplish this through a digital output. If an
alarm shuts down the chiller, the chilled water pump will remain on, providing any remaining cooling
to the loads.
Optional Network Master Panel
The MicroTech Network Master Panel (NMP) allows multiple reciprocating chiller controllers to be
incorporated into a building-wide network with other MicroTech units and auxiliary controllers. In
conjunction with a personal computer, it provides the building operator with the capability to
perform advanced equipment control and monitoring from a central or remote location. The
following features are provided by the optional NMP:
Remote unit monitoring
Advanced scheduling features
Advanced alarm management features
Global operator override
Global unit shutdown input
Demand metering
Historical electrical data logging
Optional Remote Monitoring and Sequence Panel
One to three reciprocating chiller controllers can be incorporated into a network with the MicroTech
remote monitoring and sequencing (RMS) panel. The optional RMS panel provides the following
features:
Remote chiller monitoring (up to 3)
Automatic or manual chiller sequencing
Automatic or manual lead-lag designation
Common chiller scheduling
Optimal start control
Chilled water reset by outdoor air temperature or external 4-20 mA signal
Chiller run time totalization by month, current year, and prior year
Cooling degree-day totalization by month, current year, and prior year
The RMS panel is equipped with a keypad/display that is identical to the chiller controller’s
keypad/display. With a special keystroke combination, the RMS keypad/display can be interfaced
with any chiller controller. It then operates identical to the chiller-mounted keypad/display. Thus
the operator has full access to all networked chillers from a single remote location. Panel-mounted
LED’s clearly indicate which controller the RMS panel keypad/display is currently interfaced with.
Product Manual WHR-2 13
Monitor software
When properly equipped with MicroTech Monitor software, a direct or remote connected PC can be
used for monitoring unit operation, changing setpoints, scheduling, trend logging, downloading
controller software, and diagnostics. For MicroTech network systems, the PC gives the operator
access to all unit and auxiliary controllers in the network. Specific controller or global data can be
displayed as desired. All keypad status information and control capability is available at the PC in a
full-screen format. Many additional unit control parameters, which are not available at the unit
controller’s keypad, are also available. Monitor software provides the following features:
High resolution, unit-specific graphic representations
One-touch function keys
Multiple unit display screen
Automatic screen refresher
Help text
Dial-up communications
Alarm monitoring and management
Scheduling
Trend logging
Downloading capability
Multi-level password protection
Controller Diagnostics
Open Protocol
MicroTech Open Protocol Master panel provides an interface between MicroTech unit controllers
and virtually all building automation systems (BAS). A protocol is a set of rules governing data
exchange between microprocessors, thereby permitting communications between unlike controllers.
As a result, building designers, owners and operators can obtain the advantages of McQuay
equipment, and the control versatility MicroTech has to offer. A low cost site license covering any
and all McQuay product is required.
MicroTech BACdrop Gateway
The McQuay BACdrop
Gateway panel allows any BACnet based building automation system
(BAS) to communicate with MicroTech controllers. The panel translates between the standard
BACnet protocol (ANSI/ASHRAE 135-1995) and the MicroTech protocol. No modifications to the
MicroTech hardware or software are necessary. Since BACnet is a standard, public protocol no
license agreement is necessary.
14 Product Manual WHR-2
Selection Procedure
EW Water-Cooled, R-22
1. Ratings are based and certified in accordance with ARI Standard 550/590-98.
2. Ratings in Table 5 through Table 10 may be interpolated for any chiller water temperature
between 40°F and 50°F (4.4°C and 10.0°C) but cannot be extrapolated.
3. Chilled water quantities - Ratings are based on a 10 degree F (5.6 degree C) chilled water range
(2.4 gpm/ton) and can be used for a delta-T range of 6 to 16 degrees F (3.3 to 8.8 degrees C) by
adjustments from Table 3.
4. Figure 2 through Figure 4 give the evaporator water pressure drop data. Water flow rates
should be maintained within these limits, which are based on minimum and maximum flow.
5. Ratings are based on 0.0001 fouling factor for the evaporator. For other fouling factors,
multiply ratings by evaporator factors from Table 3. For applications using a glycol solution,
see Table 1 and Table 2.
6. Ratings are based on condenser flow of 3 gpm/ton (10 degree F, 5.6 degree C delta-T) and
0.00025 fouling factor. Corrections for other conditions are in the following Application
Section.
Selection Procedure
Knowing the required chiller capacity in tons, the leaving water temperature and either the chilled
water temperature range (Delta T) or the flow, determine the unknown quantity using the formula:
24
= Tons
TDeltaGPM ×
Knowing the required chiller capacity (tons), the entering condenser water temperature, and either
the condenser water temperature range-delta T, or the GPM, determine the unknown quantity using
the formula:
aterRangeCondenserW
30Capacity Cooling Tons Nominal
.Cond TDelta500
THR
=GPM Condenser
×
=
×
With the above data, the appropriate unit can be selected from Table 5 through Table 10. Pressure
drop for evaporators and condensers can be found in Figure 2 through Figure 4.
Sample Selection
Given: Cool 165 GPM of water from 54°F to 44°F with condenser water available at 85°F.
Condenser water temperature rise to be 10 degrees. Fouling factor of 0.0001 in the evaporator and
0.00025 in the condenser.
Find:
A. WHR packaged water chiller selection
B. Compressor power input
C. Condenser water flow rate
D. Evaporator and condenser water pressure drop
Product Manual WHR-2 15
Solution:
1. Chilled water range: 54°F - 44°F = 10°F (Temperature Difference).
2.
24
Range Water ChilledGPM
=Capacity
×
= 68.8 tons
165 10
24
×
3. From Table 6, a model WHR-070EW has the capacity to meet the job requirement. For an
evaporator leaving water temperature of 44°F and condenser water entering temperature of
85°F with a 10 degree rise, the unit capacity rating table indicates:
Capacity: 70.5 Tons
Power: 62.4 kW
4. Determine condenser water from the following:
Condenser GPM =
Tons Cooling Capacity 30
Nominal Condenser Water Range
×
GPM 211
degrees 10
30 tons70.5
= =
×
5. From Figure 2 for the WHR-070EW, evaporator pressure drop at 165 GPM is 6.2 feet
6. From Figure 3, the condenser pressure drop at 210.6 GPM is 12.5 feet water.
EW Water-Cooled, R-134a
Use the same selection procedures as with R-22 except multiply the values in the R-22 Performance
Tables as follows: Capacity x 0.68, Power x 0.65, EER x 1.05.
EA Remote Condenser, R-22
Selection Method
The performance of the WHR chillers is listed by LWT (leaving chilled water temperature) and by
Condensing Temperature. Tons, Power, and THR (Total Heat Rejection) are given. This data can
then be used to select any condenser from its own capacity data. For a McQuay AC/AQ air-cooled
condenser, use product manual PM ACAQ.
1. Ratings may be interpolated for any chiller water temperature between 42°F and 50°F but
cannot be extrapolated (contact factory for ratings outside this range).
2. Chilled water quantities - Ratings are based on a 10 degree F chilled water range and are
applicable from a minimum of 6 degrees F to a maximum of 16 degrees F differential between
entering and leaving chilled water temperatures.
3. Ratings are based on .00025 fouling factor for both condenser and evaporator. For other
fouling factors, multiply ratings by cooler factors from Table 3 and Table 4. For applications
using a glycol solution, see Table 1 and Table 2.
Selection Procedure
Normally the required chiller capacity in tons, the entering and leaving chilled water temperature
and flow and the design outdoor air temperature are known. Determine any unknown quantity
using the formula:
Tons = gpm x delta T / 24
Capacity data is in Table 12 and Table 13 for IP units and Table 14 and Table 15 for SI units. Rating
are based on:
Leaving chilled water temperatures from 42°F to 50°F (6°C to 10°C) with a 10 degree delta-T.
Selections can be interpolated between these leaving temperatures but not extrapolated.
16 Product Manual WHR-2
Correction factors for delta-Ts other than 10 degrees are in Table 3 and Table 4. Exceeding the
Delta-T range of 6 to 16 degrees will cause problems controlling unit unloading.
Condensing temperatures (CT) from 105°F to 125°F (40°C to 55°C).
Total Heat Rejection (THR) is given and used to select the condenser, whether it be a dry air-
cooled condenser or an evaporative condenser.
Several different size condensers can usually be matched to any given WHR-EA unit depending on
the condensing temperature that typically ranges from 20 to 30 degrees F above the design outdoor
temperature. Increasing condensing temperatures will reduce the chiller capacity, increase its power
consumption and result in a smaller condenser being required.
Normally a WHR-EA is selected to meet or exceed the required cooling capacity at some
condensing temperature and a condenser then selected with sufficient capacity to handle the heat
rejection with the selected temperature difference (TD, difference between design outdoor dry bulb
temperature and condensing temperature).
A more accurate solution can be achieved by plotting the capacity of the chiller and the condenser
as a function of the TD and observing the curves intersection that is the system balance point. An
example is shown in the following "Selection Example" section.
Sample Selections
Given: Required capacity of 100 tons cooling 240 gpm of water from 54°F to 44°F with 95°F design
dry bulb temperature. Evaporator fouling factor of .00025.
Find:
1. WHR water chiller and AC/AQ condenser selection
2. Compressor power input, chilled water pressure drop
Solution:
1) From Table 13, several WHR selections are possible:
a) WHR 110EA at 110°F CT; 102.5 tons, 107.3 kW, 1596.5 THR, 1.05 kW/ton
b) WHR 115EA at 115°F CT; 101.0 tons, 112.8 kW, 1597.3 THR, 1.12 kW/ton
c) WHR 120EA at 125°F CT; 103.4 tons, 135.1 kW, 1701.5 THR, 1.30 kW/ton
Note that the condensing temperature has significant influence on the chiller efficiency.
Progressing from a) to c) above will require smaller condensers, offset by larger, more
expensive chillers and lessening efficiency.
2) A condenser can be selected with the above information. For this example, a McQuay Model
ACAQ air-cooled condenser will be selected using selection procedures and data contained in
Product Manual PM ACAQ. A model ACD (double row of fans, standard fan speed) will be
used.
a) For the WHR 110EA at a TD of 15 degrees F (110°F - 95°F) no selection appears possible
based on the simple selection method. However, it is close and the graphical method may
give a solution.
b) For the WHR 115EA at a TD of 20 degrees, a Model 175A will do the service.
c) For the WHR 120 EA at a TD of 30 degrees, a Model 115A will do the service.
Selection c) will prove to be considerably lower in first cost but carries a 16 percent efficiency
penalty.
Product Manual WHR-2 17
3) Graphical solution to Case a) is shown below.
d) The THR for the WHR
110EA is plotted using two
points; TD=10 degrees
(105°F-95°F) and TD=25
degrees (120°F-95°F).
e) The THR for the ACD 210A
is plotted using its capacity
at TD+15 degrees and
TD=18 degrees.
f) The curves intersect at
TD=16.5 degrees or 111.5°F
condensing temperature.
g) Extrapolating the WHR
capacity at 111.5°F gives
101.5 tons which will meet
the job requirements. It will
be the highest cost but
most efficient unit.
EA Remote Condenser, R-134a
Use the same selection procedures as with R-22 except multiply the values in the R-22 Performance
Tables as follows: Capacity x 0.68, Power x 0.65, EER x 1.05.
Selection Adjustment Factors
Ethylene and Propylene Glycol Factors
WHR units are designed to operate with a leaving chilled fluid temperature from 21°F (-6.1°C) to
60°F (16°C). Leaving chilled fluid temperatures below 40°F (4.6°C) result in suction temperatures at
or below the freezing point of water and a glycol solution is required. The use of glycol in the
evaporator will reduce the performance of the unit. The reduction in performance depends upon
the glycol concentration. This should be taken into consideration during initial system design.
McQuay encourages a minimum concentration of 25% be provided on all glycol applications.
Glycol concentrations below 25% are too diluted for long-term corrosion protection of ferrous
metals and corrosion inhibitors may need to be recalculated. Glycol in the condenser will have a
negligible effect on performance because glycol at higher temperatures will perform with
characteristics similar to water.
Table 1, Adjustment Factors for Ethylene Glycol
Freeze PointPercent
E.G
°F °C
Cap. Power Flow PD
10 26 -3 0.991 0.966 1.013 1.070
20 18 -8 0.982 0.992 1.040 1.129
30 7 -14 0.972 0.986 1.074 1.181
40 -7 -22 0.961 0.976 1.121 1.263
50 -28 -33 0.946 0.966 1.178 1.308
Table 2, Adjustment Factors for Propylene Glycol
Freeze PointPercent
P.G
°F °C
Cap. Power GPM PD
10 26 -3 0.987 0.992 1.010 1.068
20 19 -7 0.975 0.985 1.028 1.147
30 9 -13 0.962 0.978 1.050 1.248
18 Product Manual WHR-2
40 -5 -21 0.946 0.971 1.078 1.366
NOTE: Glycol applications are not included in the ARI certification program.
Evaporator and Condenser Delta-T Factors
Performance tables are based on a 10°F (5°C) temperature difference through the evaporator and
condenser. A temperature difference other than 10°F (5°C) will result in unit performance being
different from what is shown. Adjustment factors for applications having temperature drops
between 6°F and 16°F (3.3°C to 8.9°C) can be found in Table 3 and Table 4.
Fouling Factor
Performance tables are based on water with a fouling factor of 0.0001 ft
2
x hr x °F/BTU (0.0176 m
2
x
°C/kW) in the evaporator and 0.00025 ft
2
x hr x °F/BTU (0.044 m
2
x °C/kW) in water-cooled
condensers according to ARI 550/590-98. As fouling is increased, performance decreases. See
Table 3 and Table 4 for performance with other fouling factors.
To ensure optimum unit operation, proper water treatment must be maintained. Scaling and dirt in a
system will vary significantly depending on local water conditions. Water treatment should be
based on characteristics of the area’s water. Improper or untreated water may lead to scale build up,
erosion and corrosion in both the condenser and evaporator. McQuay will not accept
responsibility for poorly or improperly treated water.
Table 3, Evaporator Adjustment Factors
Fouling Factor
Chilled Water
Delta-T
0.0001 (0.0176) 0.00025 (0.044) 0.00075 (0.132)
°F °C Cap. Power Cap. Power Cap. Power
6 3.3 0.992 0.995 0.985 0.993 0.962 0.986
8 4.4 0.995 0.997 0.988 0.995 0.965 0.988
10 5.6 1.000 1.000 0.993 0.998 0.970 0.991
12 6.7 1.005 1.002 0.998 1.000 0.975 0.993
14 6.8 1.010 1.005 1.003 1.003 0.980 0.996
16 8.9 1.014 1.007 1.007 1.005 0.984 0.998
Table 4, Condenser Adjustment Factors
Fouling Factor
Condenser
Water Delta-T
0.00025 (0.044 0.00075 (0.132)
°° F °° C Cap. Power Cap. Power
6 3.3 1.003 0.999 0.984 1.035
8 4.4 1.002 1.000 0.982 1.037
10 5.5 1.000 1.000 0.980 1.038
12 6.6 0.984 0.973 0.977 1.042
14 7.7 0.976 0.960 0.963 1.067
16 8.8 0.968 0.946 0.948 1.092
Product Manual WHR-2 19
Performance Data
EW Water-Cooled
Table 5, WHR 017EW - WHR 060EW, 60 Hz, IP Units
Entering Condenser Water Temperature (10°F Delta T.)
70°F 80°F 85°F 95°F 105°F
Cap. PWR Cap. PWR Cap. PWR Cap. PWR Cap. PWR
WHR
SIZE
LWT
(°F)
Tons kWi
EER
Tons kWi
EER
Tons kWi
EER
Tons kWi
EER
Tons kWi
EER
40.0 17.8 11.7 17.1 16.9 13.1 14.7 16.5 13.7 13.7 15.6 15.0 11.8 14.6 16.3 10.2
42.0 18.4 11.8 17.7 17.6 13.1 15.1 17.1 13.8 14.1 16.2 15.2 12.1 15.1 16.5 10.4
017EW 44.0 19.1 11.8 18.3 18.2 13.2 15.6 17.7 13.9 14.4 16.7 15.4 12.4 15.7 16.7 10.7
46.0 19.8 11.9 18.7 18.9 13.3 16.0 18.3 14.0 14.8 17.3 15.5 12.6 16.3 17.0 10.9
48.0 20.4 11.9 19.4 19.5 13.3 16.6 19.0 14.1 15.3 18.0 15.6 13.1 16.9 17.1 11.3
50.0 21.2 12.0 19.9 20.1 13.5 17.0 19.6 14.2 15.7 18.6 15.8 13.4 18.1 17.4 11.7
40.0 21.8 15.5 16.1 20.7 17.3 13.8 20.2 18.2 12.8 19.1 19.9 11.1 17.9 21.6 9.6
42.0 22.6 15.6 16.6 21.5 17.4 14.2 20.9 18.3 13.2 19.8 20.1 11.3 18.6 21.8 9.8
020EW 44.0 23.4 15.7 17.1 22.3 17.5 14.6 21.7 18.4 13.5 20.5 20.3 11.6 19.3 22.1 10.1
46.0 24.3 15.7 17.6 23.1 17.6 15.0 22.5 18.6 13.9 21.2 20.5 11.9 20.0 22.4 10.3
48.0 25.1 15.8 18.2 23.9 17.7 15.5 23.3 18.7 14.3 22.0 20.7 12.3 20.7 22.6 10.6
50.0 26.0 15.8 18.7 24.7 17.8 15.9 24.1 18.8 14.7 22.8 20.9 12.6 22.1 23.0 10.9
40.0 27.1 19.6 15.9 25.8 21.9 13.7 25.1 23.0 12.7 23.8 25.2 11.0 22.3 27.4 9.5
42.0 28.1 19.8 16.5 26.8 22.0 14.1 26.1 23.2 13.1 24.7 25.4 11.3 23.1 27.6 9.7
025EW 44.0 29.2 19.8 17.0 27.8 22.1 14.5 27.0 23.3 13.4 25.5 25.7 11.5 24.0 28.0 10.0
46.0 30.2 19.9 17.4 28.8 22.3 14.9 27.9 23.5 13.7 26.3 25.9 11.8 24.8 28.4 10.2
48.0 31.2 19.9 18.1 29.7 22.4 15.4 28.9 23.6 14.2 27.4 26.2 12.2 25.8 28.7 10.5
50.0 32.4 20.1 18.6 30.7 22.6 15.8 29.9 23.8 14.6 28.4 26.5 12.5 27.5 29.1 10.9
40.0 30.4 21.7 16.1 28.8 24.3 13.8 28.1 25.5 12.8 26.6 27.9 11.1 24.9 30.3 9.6
42.0 31.4 21.9 16.6 30.0 24.4 14.2 29.1 25.7 13.2 27.6 28.1 11.3 25.8 30.6 9.8
030EW 44.0 32.6 22.0 17.1 31.0 24.5 14.6 30.2 25.8 13.5 28.5 28.5 11.6 26.8 31.0 10.1
46.0 33.8 22.1 17.6 32.2 24.6 15.0 31.3 26.0 13.9 29.4 28.7 11.9 27.8 31.5 10.3
48.0 34.9 22.1 18.2 33.2 24.8 15.5 32.4 26.2 14.3 30.7 29.0 12.3 28.8 31.7 10.6
50.0 36.2 22.2 18.7 34.3 25.0 15.9 33.5 26.3 14.7 31.7 29.3 12.6 30.8 32.3 10.9
40.0 38.8 26.8 16.8 36.6 29.7 14.3 35.5 31.1 13.3 33.5 33.9 11.5 31.3 36.6 9.9
42.0 40.2 27.0 17.2 38.0 30.0 14.7 36.9 31.4 13.7 35.1 34.3 11.8 32.5 37.1 10.2
040EW 44.0 41.6 27.2 17.8 39.3 30.2 15.1 38.0 31.7 14.0 35.9 34.6 12.1 33.7 37.6 10.4
46.0 43.1 27.5 18.3 40.8 30.5 15.5 39.6 32.0 14.4 37.3 35.0 12.5 35.0 38.0 10.6
48.0 44.6 27.6 18.8 42.2 30.7 16.0 41.0 32.3 15.2 38.7 35.4 12.7 36.3 38.5 11.0
50.0 46.1 27.7 19.3 43.7 31.0 16.5 42.5 32.6 15.2 40.0 35.8 13.0 37.5 38.9 11.3
40.0 44.9 30.4 17.1 42.4 33.7 14.6 41.1 35.4 13.6 38.8 38.5 11.7 36.3 41.6 10.2
42.0 46.5 30.7 17.6 44.0 34.0 15.0 42.7 35.6 14.0 40.7 39.0 12.0 37.6 42.1 10.4
045EW 44.0 48.2 30.9 18.2 45.5 34.3 15.4 44.0 36.0 14.3 41.6 39.3 12.4 39.1 42.7 10.7
46.0 49.9 31.2 18.7 47.2 34.6 15.9 45.9 36.4 14.7 43.2 39.8 12.7 40.5 43.2 10.9
48.0 51.6 31.3 19.2 48.8 34.9 16.4 47.5 36.7 15.5 44.8 40.2 13.0 42.0 43.7 11.2
50.0 53.4 31.5 19.7 50.6 35.2 16.8 49.2 37.0 15.5 46.3 40.6 13.3 43.5 44.2 11.5
40.0 52.5 38.1 16.0 49.6 42.3 13.7 48.2 44.3 12.7 45.4 48.2 11.0 42.4 52.1 9.5
42.0 54.4 38.5 16.5 51.5 42.6 14.1 50.0 44.6 13.1 47.6 48.8 11.3 44.0 52.8 9.8
050EW 44.0 56.4 38.7 17.0 53.3 43.0 14.5 51.5 45.1 13.4 48.7 49.3 11.6 45.7 53.5 10.0
46.0 58.5 39.1 17.5 55.3 43.3 14.9 53.7 45.6 13.8 50.5 49.8 11.9 47.4 54.1 10.2
48.0 60.4 39.2 18.0 57.2 43.7 15.3 55.6 46.0 14.5 52.4 50.4 12.2 49.2 54.8 10.5
50.0 62.5 39.5 18.5 59.2 44.1 15.7 57.6 46.4 14.5 54.2 50.9 12.5 50.9 55.4 10.8
40.0 59.7 41.4 16.8 56.3 45.9 14.3 54.7 48.1 13.3 51.5 52.4 11.5 48.2 56.6 9.9
42.0 61.8 41.8 17.2 58.5 46.3 14.7 56.7 48.5 13.7 54.1 53.0 11.8 50.0 57.3 10.2
060EW 44.0 64.1 42.0 17.8 60.5 46.7 15.1 58.5 49.0 14.0 55.3 53.6 12.1 51.9 58.1 10.4
46.0 66.4 42.4 18.3 62.8 47.1 15.5 61.0 49.5 14.4 57.4 54.1 12.5 53.8 58.8 10.6
48.0 68.6 42.6 18.8 64.9 47.5 16.0 63.2 50.0 15.2 59.6 54.7 12.7 55.9 59.5 11.0
50.0 71.0 42.9 19.3 67.2 47.9 16.5 65.4 50.4 15.2 61.6 55.3 13.0 57.8 60.2 11.3
Notes:
1. Bold box areas certified in accordance with ARI Standard 550/590-98.
2. Ratings based on HCFC-22, evaporator fouling of 0.0001, 2.4 gpm/ton; condenser fouling of 0.00025, 3 gpm/ton.
3. For 208V units multiply capacity and EER by 0.98.
4. Ratings are based on circuit #1 in lead position and circuit #2 in lag position.
5. Interpolation is allowed; extrapolation is not permitted. Consult McQuay for performance outside the ratings shown.
6. For LWT of 40°F and below please refer to Application Adjustment Factors section.
20 Product Manual WHR-2
Table 6, WHR 070EW - WHR 120EW, 60 Hz, IP Units
Entering Condenser Water Temperature (10°F Delta T.)
70°F 80°F 85°F 95°F 105°F
Cap. PWR Cap. PWR Cap. PWR Cap. PWR Cap. PWR
WHR
SIZE
LWT
(°F)
Tons kWi
EER
Tons kWi
EER
Tons kWi
EER
Tons kWi
EER
Tons kWi
EER
40.0 71.9 52.8 16.0 67.9 58.5 13.7 65.9 61.3 12.7 62.1 66.7 11.0 58.1 72.1 9.5
42.0 74.5 53.2 16.5 70.5 59.0 14.1 68.4 61.8 13.1 65.1 67.5 11.3 60.3 73.0 9.8
070EW 44.0 77.2 53.5 17.0 73.0 59.5 14.5 70.5 62.4 13.4 66.7 68.2 11.6 62.6 74.0 10.0
46.0 80.0 54.0 17.5 75.6 60.0 14.9 73.5 63.0 13.8 69.2 69.0 11.9 64.9 74.9 10.2
48.0 82.7 54.3 18.0 78.3 60.5 15.3 76.1 63.6 14.5 71.8 69.7 12.2 67.3 75.8 10.5
50.0 85.5 54.6 18.5 81.0 61.0 15.7 78.8 64.2 14.5 74.2 70.4 12.5 69.7 76.6 10.8
40.0 78.0 57.4 15.9 73.7 63.6 13.6 71.5 66.7 12.6 67.4 72.6 10.9 63.0 78.4 9.4
42.0 80.9 57.9 16.4 76.5 64.2 14.0 74.2 67.2 13.0 70.7 73.5 11.2 65.4 79.4 9.7
080EW 44.0 83.8 58.2 16.9 79.2 64.8 14.4 76.5 67.9 13.3 72.4 74.2 11.5 67.9 80.6 9.9
46.0 86.8 58.8 17.4 82.1 65.3 14.8 79.8 68.6 13.7 75.0 75.0 11.8 70.4 81.5 10.1
48.0 89.7 59.1 17.8 84.9 65.9 15.2 82.6 69.3 14.4 77.9 75.8 12.1 73.1 82.5 10.4
50.0 92.8 59.4 18.4 87.9 66.4 15.6 85.5 69.9 14.4 80.6 76.6 12.4 75.6 83.4 10.7
40.0 86.7 61.4 16.6 81.9 68.0 14.2 79.5 71.3 13.2 74.9 77.6 11.4 70.0 83.9 9.9
42.0 89.8 61.9 17.1 85.0 68.6 14.6 82.5 71.9 13.6 78.5 78.6 11.7 72.7 84.9 10.1
085EW 44.0 93.1 62.2 17.7 88.0 69.3 15.0 85.0 72.6 13.9 80.4 79.4 12.0 75.5 86.1 10.4
46.0 96.5 62.9 18.1 91.2 69.8 15.4 88.7 73.3 14.3 83.4 80.2 12.4 78.2 87.1 10.6
48.0 99.7 63.2 18.6 94.4 70.4 15.9 91.8 74.1 15.1 86.5 81.1 12.6 81.2 88.2 10.9
50.0 103.1 63.5 19.2 97.7 71.0 16.3 95.0 74.7 15.1 89.5 81.9 12.9 84.0 89.2 11.2
40.0 93.3 64.6 17.0 88.1 71.6 14.5 85.6 75.0 13.5 80.6 81.7 11.6 75.4 88.2 10.1
42.0 96.7 65.2 17.5 91.5 72.2 14.9 88.8 75.6 13.9 84.5 82.7 11.9 78.2 89.4 10.4
090EW 44.0 100.2 65.5 18.0 94.7 72.9 15.3 91.5 76.4 14.2 86.6 83.5 12.3 81.3 90.6 10.6
46.0 103.9 66.2 18.5 98.2 73.4 15.8 95.4 77.2 14.6 89.8 84.4 12.6 84.2 91.7 10.8
48.0 107.3 66.5 19.0 101.6 74.1 16.3 98.8 77.9 15.4 93.1 85.3 12.9 87.4 92.8 11.1
50.0 111.0 66.9 19.6 105.1 74.7 16.7 102.3 78.6 15.4 96.3 86.2 13.2 90.4 93.8 11.4
40.0 96.9 68.4 16.7 91.8 76.3 14.2 89.2 80.2 13.2 84.3 87.9 11.3 79.2 95.5 9.8
42.0 100.3 68.7 17.2 95.2 76.7 14.7 92.5 80.7 13.6 87.5 88.7 11.6 82.2 96.5 10.1
095EW 44.0 104.0 68.9 17.9 98.7 77.2 15.1 96.0 81.3 14.0 90.6 89.5 12.0 85.0 97.4 10.4
46.0 107.6 69.1 18.5 102.1 77.5 15.6 99.5 81.8 14.4 94.0 90.2 12.4 88.5 98.5 10.6
48.0 111.5 69.3 19.0 105.8 77.9 16.0 103.6 82.1 15.1 97.2 90.9 12.7 92.6 98.8 11.0
50.0 115.2 69.3 19.7 109.4 78.2 16.5 106.4 82.7 15.3 100.7 91.5 13.0 95.0 99.6 11.3
40.0 102.9 72.7 16.7 97.5 81.0 14.2 94.8 85.3 13.2 89.6 93.4 11.3 84.1 101.5 9.8
42.0 106.6 73.0 17.2 101.2 81.6 14.7 98.3 85.8 13.6 92.9 94.3 11.6 87.3 102.6 10.1
100EW 44.0 110.5 73.2 17.9 104.9 82.0 15.1 102.0 86.4 14.0 96.3 95.1 12.0 90.3 103.6 10.4
46.0 114.3 73.4 18.5 108.5 82.3 15.6 105.7 86.9 14.4 99.9 95.8 12.4 94.0 104.6 10.6
48.0 118.4 73.6 19.0 112.4 82.8 16.0 110.1 87.3 15.1 103.3 96.6 12.7 98.4 105.0 11.0
50.0 122.4 73.7 19.7 116.3 83.1 16.5 113.0 87.9 15.3 107.0 97.3 13.0 101.0 105.8 11.3
40.0 112.5 80.7 16.5 106.6 90.0 14.0 103.6 94.7 13.0 97.9 103.7 11.2 91.9 112.7 9.7
42.0 116.5 81.0 17.0 110.6 90.5 14.5 107.5 95.2 13.4 101.6 104.6 11.5 95.4 113.8 9.9
110EW 44.0 120.8 81.2 17.6 114.6 91.0 14.9 111.5 95.9 13.8 105.3 105.6 11.8 98.7 114.9 10.2
46.0 125.0 81.5 18.2 118.6 91.4 15.4 115.5 96.5 14.2 109.2 106.4 12.2 102.8 116.1 10.5
48.0 129.5 81.7 18.8 122.9 91.9 15.8 120.4 96.9 14.9 112.9 107.2 12.5 107.6 116.6 10.8
50.0 133.8 81.8 19.4 127.1 92.3 16.3 123.5 97.5 15.1 116.9 108.0 12.8 110.4 117.5 11.2
40.0 114.5 80.7 16.7 108.5 90.0 14.2 105.5 94.8 13.2 99.7 103.8 11.3 93.6 112.8 9.8
42.0 118.6 81.1 17.2 112.6 90.6 14.7 109.4 95.3 13.6 103.4 104.7 11.6 97.2 114.0 10.1
115EW 44.0 122.9 81.3 17.9 116.7 91.1 15.1 113.5 96.0 14.0 107.1 105.7 12.0 100.4 115.1 10.4
46.0 127.2 81.6 18.5 120.8 91.5 15.6 117.6 96.6 14.4 111.1 106.5 12.4 104.6 116.3 10.6
48.0 131.8 81.8 19.0 125.1 92.0 16.0 122.5 97.0 15.1 115.0 107.3 12.7 109.5 116.7 11.0
50.0 136.2 81.9 19.7 129.4 92.4 16.5 125.8 97.6 15.3 119.0 108.1 13.0 112.4 117.6 11.3
40.0 123.1 88.6 16.5 116.6 98.8 14.0 113.4 103.9 13.0 107.1 113.8 11.2 100.6 123.7 9.7
42.0 127.5 89.0 17.0 121.0 99.4 14.5 117.6 104.6 13.4 111.1 114.9 11.5 104.4 125.0 9.9
120EW 44.0 132.1 89.2 17.6 125.4 99.9 14.9 122.0 105.3 13.8 115.2 115.9 11.8 108.0 126.2 10.2
46.0 136.8 89.5 18.2 129.8 100.4 15.4 126.4 105.9 14.2 119.4 116.8 12.2 112.5 127.5 10.5
48.0 141.6 89.7 18.8 134.4 100.9 15.8 131.7 106.4 14.9 123.6 117.7 12.5 117.7 128.0 10.8
50.0 146.4 89.8 19.4 139.1 101.3 16.3 135.2 107.1 15.1 128.0 118.6 12.8 120.8 129.0 11.2
Notes:
1. Bold box areas certified in accordance with ARI Standard 550/590-98.
2. Ratings based on HCFC-22, evaporator fouling of 0.0001, 2.4 gpm/ton; condenser fouling of 0.00025, 3 gpm/ton.
3. For 208V units multiply capacity and EER by 0.98.
4. Ratings are based on circuit #1 in lead position and circuit #2 in lag position.
5. Interpolation is allowed; extrapolation is not permitted. Consult McQuay for performance outside the ratings shown.
6. For LWT of 40°F and below please refer to Application Adjustment Factors section.
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McQuay WHR 017EA User manual

Type
User manual

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