York WR300, WR240 User Manual
®
262292-YTG-B-0107
TECHNICAL GUIDE
SUNLINE MagnaDRY™
GAS/ELECTRIC SINGLE
PACKAGE AIR CONDITIONERS
WR 180, 240 & 300
15 thru 25 NOMINAL TONS
11.9 EER (15 TONS), 11.0 EER (20 TONS),
10.0 EER (25 TONS)
DESCRIPTION
YORK Sunline MagnaDRY™ units are convertible single
package high efficiency rooftops. All models have independent
dual refrigerant circuits for efficient part load operation.
Although the units are primarily designed for curb mounting on
a roof, they can also be slab-mounted at ground level or set on
steel beams above a finished roof.
All units include:
• Powder Paint finish that meets ASTM-B-117 1000 hour
salt spray standards
• Two-stage cooling provided by dual independent
refrigeration circuits with expansion valves, filter-driers,
high and low pressure/loss of charge switches and
freezestats
• Scroll compressors
• Two-stage heating provided by dual independent heat
exchangers with aluminized steel tubes, redundant gas
valves, spark ignition with induced draft logic
• Permanently lubricated motors
• Bottom or side air discharge configuration capability (field
convertible)
• Belt Drive Blower Motor with high static drive option
• Constant supply air volume (CV) with optional variable air
volume (VAV)
• Manufactured under the quality standards of ISO9001
• Simplicity® Control Board
• Zero-25% fixed air damper with hood
• Copper tube/aluminum fin coils
• Hinged filter access and toolless latched doors
• Rigging holes in base rails for lifting
• Single point power connection
• Complete factory package - tested, charged and wired
• CSA agency approvals on all units
WARRANTY
• One-year parts warranty
• A Five-year parts warranty on the compressors and
electric heat elements
• Ten-year parts warranty on the gas-fired heat exchangers
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
TABLE OF CONTENTS
262292-YTG-B-0107
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
PRODUCT NOMENCLATURE. . . . . . . . . . . . . . . . . . . . . . .3
FEATURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
FACTORY-INSTALLED OPTIONS . . . . . . . . . . . . . . . . . . .8
FIELD-INSTALLED ACCESSORIES . . . . . . . . . . . . . . . . . .9
GUIDE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . .53
LIST OF FIGURES
Fig. # Pg. #
1 UNIT CUTAWAY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2 REHEAT CONTROL BOARD. . . . . . . . . . . . . . . . . . . . .6
3 REHEAT CONTROLS - PART 1. . . . . . . . . . . . . . . . . . .7
4 REHEAT CONTROLS - PART 2. . . . . . . . . . . . . . . . . . .7
5 WR180 MOISTURE REMOVAL - ALT. MODE. . . . . . 21
6 WR180 MOISTURE REMOVAL - NORMAL MODE. . 21
7 WR240 MOISTURE REMOVAL - ALT. MODE. . . . . . 22
8 WR240 MOISTURE REMOVAL - NORMAL MODE. . 22
9 WR300 MOISTURE REMOVAL - ALT. MODE. . . . . . 23
10 WR300 MOISTURE REMOVAL - NORMAL MODE. . 23
11 ALTITUDE/TEMPERATURE CONVERSION
FACTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
12 UNIT DIMENSIONS WR180, 240 & 300
(FRONT VIEW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
13 REAR VIEW DIMENSIONS . . . . . . . . . . . . . . . . . . . . 47
14 UNIT DIMENSIONS WR180, 240 & 300
(RAINHOOD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
15 UNIT CENTER OF GRAVITY. . . . . . . . . . . . . . . . . . . 49
16 TYPICAL UNIT APPLICATIONS . . . . . . . . . . . . . . . . 49
17 FOUR AND SIX POINT LOADS . . . . . . . . . . . . . . . . . 50
18 UNIT ROOF CURB DIMENSIONS . . . . . . . . . . . . . . . 51
19 ROOF CURB DUCT OPENINGS DIMENSION . . . . . 51
20 CUT AWAY OF ROOF CURB . . . . . . . . . . . . . . . . . . 51
21 TYPICAL FIELD WIRING . . . . . . . . . . . . . . . . . . . . . . 52
LIST OF TABLES
Tbl. # Pg. #
1 SOUND POWER RATING . . . . . . . . . . . . . . . . . . . . . 11
2 CAPACITY RATINGS - (ARI 360) . . . . . . . . . . . . . . . 11
3 GAS HEAT RATINGS. . . . . . . . . . . . . . . . . . . . . . . . . 11
4 COOLING CAPACITIES FOR WR180 . . . . . . . . . . . . 12
5 COOLING CAPACITIES FOR WR240 . . . . . . . . . . . . 14
6 COOLING CAPACITIES FOR WR300 . . . . . . . . . . . . 16
7 COOLING CAPACITIES FOR WR180 (ALTERNATE
REHEAT MODE). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
8 COOLING CAPACITIES FOR WR240 (ALTERNATE
REHEAT MODE). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Tbl. # Pg. #
9 COOLING CAPACITIES FOR WR300 (ALTERNATE
REHEAT MODE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
10 ALTITUDE CORRECTION FACTORS. . . . . . . . . . . . . 24
11 WR180 BLOWER PERFORMANCE - 15 TON STD.
DRIVE (COOLING ONLY) DOWNFLOW. . . . . . . . . . . 26
12 WR180 BLOWER PERFORMANCE - 15 TON STD.
DRIVE (GAS HEAT) DOWNFLOW . . . . . . . . . . . . . . . 27
13 WR180 BLOWER PERFORMANCE - 15 TON HIGH
STATIC DRIVE (COOLING ONLY) DOWNFLOW. . . . 28
14 WR180 BLOWER PERFORMANCE - 15 TON HIGH
STATIC DRIVE (GAS HEAT) DOWNFLOW . . . . . . . . 29
15 WR240 BLOWER PERFORMANCE - 20 TON STD.
DRIVE (COOLING ONLY) DOWNFLOW. . . . . . . . . . . 30
16 WR240 BLOWER PERFORMANCE - 20 TON STD.
DRIVE (GAS HEAT) DOWNFLOW . . . . . . . . . . . . . . . 31
17 WR240 BLOWER PERFORMANCE - 20 TON HIGH
STATIC DRIVE (COOLING ONLY) DOWNFLOW. . . . 32
18 WR240 BLOWER PERFORMANCE - 20 TON HIGH
STATIC DRIVE (GAS HEAT) DOWNFLOW . . . . . . . . 33
19 WR300 BLOWER PERFORMANCE - 25 TON STD.
DRIVE (COOLING ONLY) DOWNFLOW. . . . . . . . . . . 34
20 WR300 BLOWER PERFORMANCE - 25 TON STD.
DRIVE (GAS HEAT) DOWNFLOW . . . . . . . . . . . . . . . 35
21 WR300 BLOWER PERFORMANCE - 25 TON HIGH
STATIC DRIVE (COOLING ONLY) DOWNFLOW. . . . 36
22 WR300 BLOWER PERFORMANCE - 25 TON HIGH
STATIC DRIVE (GAS HEAT) DOWNFLOW . . . . . . . . 37
23 BLOWER MOTOR AND DRIVE DATA . . . . . . . . . . . .38
24 STATIC RESISTANCES. . . . . . . . . . . . . . . . . . . . . . . .38
25 POWER EXHAUST PERFORMANCE. . . . . . . . . . . . .38
26 WR ELECTRICAL DATA - STANDARD DRIVE
MOTOR W/O POWERED CONV. OUTLET. . . . . . . . .39
27 WR ELECTRICAL DATA - HIGH STATIC DRIVE
MOTOR W/O POWERED CONV. OUTLET. . . . . . . . .40
28 WR ELECTRICAL DATA - LOW AIRFLOW DRIVE
MOTOR W/O POWERED CONV. OUTLET. . . . . . . . .41
29 WR ELECTRICAL DATA - STANDARD DRIVE
MOTOR WITH POWERED CONV. OUTLET. . . . . . . .42
30 WR ELECTRICAL DATA - HIGH STATIC DRIVE
MOTOR WITH POWERED CONV. OUTLET. . . . . . . .43
31 WR ELECTRICAL DATA - LOW AIRFLOW DRIVE
MOTOR WITH POWERED CONV. OUTLET. . . . . . . .44
32 PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
33 SUPPLY FAN VFD WEIGHTS, IN LBS.. . . . . . . . . . . . 45
34 UTILITIES ENTRY DATA . . . . . . . . . . . . . . . . . . . . . . .46
35 MINIMUM CLEARANCES . . . . . . . . . . . . . . . . . . . . . . 48
36 FOUR AND SIX POINT LOADS. . . . . . . . . . . . . . . . . . 50
2 Unitary Products Group
262292-YTG-B-0107
PRODUCT NOMENCLATURE
15-25 Ton Sunline MagnaDRY™ Model Number Nomenclature
W R 180 N24 A 2 A AA 1 0 1 2 4 A
Product Category
W = A/C, Single Pkg.,
R-22 w/6-Row Evap.
Product Identifier
R = 90.1 w/Reheat
Nominal Cooling Capacity
180 = 15 Ton
240 = 20 Ton
300 = 25 Ton
Heat Type and Nominal Heat Capacity
C00 = Cooling Only. No field installed
electric heat
Gas Heat Options
N24 = 240 MBH Output Aluminized Steel
N32 = 320 MBH Output Aluminized Steel
S24 = 240 MBH Output Stainless Steel
S32 = 320 MBH Output Stainless Steel
Electric Heat Options
E18 = 18 KW
E36 = 36 KW
E54 = 54 KW
E72 = 72 KW
Airflow
A=Std.Drive
B = Std. Drive/Single Input Econo.
C = Std. Drive/Single Input Econo./Power Exhaust
(Downflow Only)
D = Std. Drive/Motorized Damper
N = Hi Static Drive
P = Hi Static Drive/Single Input Econo.
Q = Hi Static Drive/Single Input Econo./Power Exhaust
(Downflow Only)
R = Hi Static Drive/Motorized Damper
2 = Low Static Drive
3 = Low Static Drive/Single Input Econo.
4 = Low Static Drive/Single Input Econo./Power Exhaust
(Downflow Only)
5 = Low Static Drive/Motorized Damper
2 = 208/230-3-60
4 = 460-3-60
5 = 575-3-60
Voltage
Product Style
A = Style A
These four digits will not be assigned until a quote is requested, or an order placed.
SS Drain Pan
CPC Controller, DFS, APS
Johnson Controller, DFS, APS
Honeywell Controller, DFS, APS
Novar Controller, DFS, APS
Simplicity IntelliComfort Controller
Simplicity IntelliComfort Controller w/ModLinc
Hot Gas Bypass (Standard on VAV, Optional on CV)
Variable Air Volume (VFD) - Not Available with Factory Installed BAS Options
Variable Air Volume (VFD With Manual Bypass) - Not Available with Factory Installed BAS Options
Variable Air Volume (VFD-Ready for Customer Installed Drive)
2" Pleated filters
4" Pleated filters
BAS Ready Unit with Belimo Economizer
Double Wall Construction
Heat Reclaim Coil Options (2 or 3 Row, 1-5/8" or 2-1/8" Stub Out) (WJ and W R models only)
Any Combination of Additional Options that Don’t Have an Option Code Pre-assigned
Product Generation
1 = First Generation
2 = Second Generation
Standard Cabinet
AA = None
AB = Phase Monitor
AC = Coil Guard
AD = Dirty Filter Switch
AE = Phase Monitor & Coil Guard
AF = Phase Monitor & Dirty Filter Switch
AG = Coil Guard & Dirty Filter Switch
AH = Phase Monitor, Coil Guard & Dirty Filter Switch
RC = Coil Guard & American Flag
TA = Technicoat Condenser Coil
TJ = Technicoat Evaporator Coil
TS = Technicoat Evaporator & Condenser Coils
ZZ = If desired option combination is not listed above, ZZ will be assigned and configuration options will be
located in digits 15-18.
Installation Options
A = No Options Installed
B=Option1
C = Option 2
D=Options1&2
E = Option 3
F = Option 4
G = Options 1 & 3
H=Options1&4
J = Options 1, 2 & 3
K = Options 1, 2, & 4
L = Options 1,3 & 4
M = Options 1, 2, 3, & 4
N=Options2&3
P = Options 2 & 4
Q = Options 2, 3, & 4
R=Options3&4
S = Option 5
T=Options1&5
U=Options1,3,&5
V = Options 1, 4, & 5
W=Options1,3,4,&5
X=Options3&5
Y=Options4&5
Z = Options 3, 4 & 5
Options
1 = Disconnect
2 = Non-Pwr'd Conv. Outlet
3 = Smoke Detector S.A.
4 = Smoke Detector R.A.
5=Pwr'dConv.Outlet
Configuration Options (not required for all units)
Additional Options
Hinged Filter Door & Toolless Access Cabinet
BA = Hinged Filter Door & Toolless Access Panels
BB = Phase Monitor, Hinged Filter Door & Toolless
Access Panels
BC = Coil Guard, Hinged Filter Door & Toolless
Access Panels
BD = Dirty Filter Switch, Hinged Filter Door &
Toolless Access Panels
BE = Phase Monitor & Coil Guard, Hinged Filter
Door & Toolless Access Panels
BF = Phase Monitor & Dirty Filter Switch, Hinged
Filter Door & Toolless Access Panels
BG = Coil Guard & Dirty Filter Switch, Hinged Filter
Door & Toolless Access Panels
BH = Phase Monitor, Coil Guard & Dirty Filter Switch,
Hinged Filter Door & Toolless Access Panels
Unitary Products Group 3
262292-YTG-B-0107
FEATURES
All models are available with a wide variety of factory-mounted
options such as stainless steel heat exchangers, phase
monitor, dirty filter switch, and coil guard to make them suitable
for almost every application.
All units are self-contained and assembled on full perimeter
base rails with holes in the four corners for overhead rigging.
Every unit is completely piped, wired, charged and tested at the
factory to simplify the field installation and to provide years of
dependable operation.
All models (including those with an economizer) are suitable for
either bottom or horizontal duct connections. Models with
factory installed power exhaust are suitable for bottom
duct connections only. For bottom duct, you remove the
sheet metal panels from the supply and return air openings
through the base of the unit. For horizontal duct, you replace
the supply and return air panels on the rear of the unit with a
side duct flange accessory.
All models are available with these “factory mounted” outdoor
air damper options:
• Single enthalpy econom i z er
• Single enthalpy economizer with power exhaust
• Motorized outdoor air damper
A fixed outdoor air intake assembly will be shipped in the return
air compartment of all units ordered without an economizer or
motorized outdoor air damper option. The assembly includes a
rain hood with a damper that can be set for 10, 15 or 25%
outdoor air. With bottom duct connections, the intake damper
assembly should be mounted over the opening in the return air
panel. With horizontal ductwork, it should be mounted on the
return air duct.
All supply air blowers are equipped with a belt drive that can be
adjusted to meet the exact requirements of the job. A high static
drive option is available for applications with a higher CFM and/
or static pressure requirement. A variable air volume (VAV)
option using a variable frequency drive is available for
applications requiring a constant supply duct pressure. A
differential pressure transducer is used to monitor supply duct
static pressure and return a speed reference signal to the VFD
to control the output of the indoor blower motor.
All compressors include scroll compressors and internal
pressure relief. Every refrigerant circuit includes an expansion
valve, a liquid line filter-drier, a discharge line high pressure
switch and a suction line with a freezestat and low pressure/
loss of charge switch to protect all system components. A hot
gas bypass option, consisting of an adjustable compressor
discharge bypass valve, is available for low cooling load
applications.
• Simplicity® Controls - Simplicity® control boards have
standardized a number of features previously available
only as options or by utilizing additional controls.
• Low Ambient - An integrated low-ambient control allows
all units to operate in the cooling mode down to 0°F
outdoor ambient without additional assistance. Optionally,
the control board can be programmed to lockout the
compressors when the outdoor air temperature is low or
when free cooling is available.
• Anti-Short Cycle Protection - To aid compressor life, an
anti-short cycle delay is incorporated into the standard
controls. Compressor reliability is further ensured by
programmable minimum run times. For testing, the anti
short cycle delay can be temporarily overridden with the
push of a button.
• Lead-Lag - An integrated Lead-Lag option allows equal
run time hours on all compressors, thereby extending the
life of all compressors. This option is selectable on the unit
control board.
• Fan Delays - Fan on and fan off delays are fully
programmable. Furthermore, the heating and cooling fan
delay times are independent of one another. All units are
programmed with default values based upon their
configuration of cooling and heat.
• Safety Monitoring - The control board monitors the high
and low-pressure switches, the freezestats, the gas valve,
if applicable, and the temperature limit switch on gas and
electric heat units. The unit control board will alarm on
ignition failures, compressor lockouts and repeated limit
switch trips.
• Nuisance Trip Protection and Strikes - To prevent
nuisance trouble calls, the control board uses a “three
times, you’re out” philosophy. The high and low-pressure
switches and the freezestats must trip three times within
two hours before the unit control board will lock out the
associated compressor.
• On Board Diagnostics - Each alarm will energize a
trouble light on the thermostat, if so equipped, and flash
an alarm code on the control board LED. Each high and
low-pressure switch alarm as well as each freezestat
alarm has its own flash code. The control board saves the
five most recent alarms in memory, and these alarms can
be reviewed at any time. Alarms and programmed values
are retained through the loss of power.
All units have long lasting powder paint cabinets with 1000 hour
salt spray test approval under ASTM-B117 procedures.
All models are CSA approved.
• Warranty - All models include a one-year limited parts
warranty on the complete unit. Compressors and electric
heater elements carry a five-year warranty. Gas heat
exchangers carry a 10-year parts warranty.
• Gas Heat Operation - All gas heat units are built with two
heating sections for two equal stages of capacity control.
Each section includes a durable heat exchanger with
aluminized steel or optional stainless steel tubes, a
redundant gas valve, spark ignition, power venting, an
ignition module for 100% shut-off and all of the safety
controls required to meet the latest ANSI standards.
The gas supply piping can be routed into the heating
compartment through a hole in the base pan of the unit or
through a knockout in the piping panel on the front of the
unit.
4 Unitary Products Group
262292-YTG-B-0107
FIGURE 1: UNIT CUTAWAY
• Electric Heat Operation - All electric heat models
(factory installed only) are wired for a single power source
and include a bank of nickel chromium elements mounted
at the discharge of the supply air blower to provide a high
velocity and uniform distribution of air across the heating
elements. Every element is fully protected against
excessive current and temperature by fuses and two
thermal limit switches.
• The power supply wiring can be routed into the control
box through a threaded pipe connection in the base pan of
the unit or through a knockout in the wiring panel on the
front of the unit.
• BAS Controls - York’s Magnum series units offer factory
mounted BAS controls such as Novar, Honeywell,
Johnson, and CPC.
REHEAT MODE SEQUENCE OF OPERATION
The reheat control board allows the user to select two different
modes of operation via a jumper connection on the board. (See
Figure 2.) Each mode is described below. Refer to Figures 2 - 4
when reading this section.
LOCATION OF VFD (Optional)
LOCATION OF VFD BYPASS (Optional)
“NORMAL” MODE
When the reheat control board (RCB) detects a need for
dehumidification (24VAC) at "HUM" via the field supplied
dehumidistat connected to RHTB-1 and RHTB-2 and there is
not a call for cooling, it energizes the hot gas relay (HGR),
which energizes the 3-way valve (SOL 3), the condenser coil
valve (SOL 2), and de-energizes the reheat coil bleed valve
(SOL 1). The Y1 signal is passed to the unit control board
(UCB), which engages circuit # 1, resulting in circuit #1 reheat
mode operation.
When the room thermostat calls for first stage cooling, with or
without a call for dehumidification, the RCB senses a signal
through "Y1", de-energizing the HGR, which de-energizes SOL
3 and SOL 2, and energizes SOL 1, engaging circuit # 1,
resulting in circuit #1 cooling mode operation.
When the room thermostat calls for second stage cooling, the
RCB senses a signal through "Y1" & "Y2" and engages circuit
#1 and circuit #2 in the cooling mode.
Indoor blower operation is initiated upon a call for first stage
cooling, second stage cooling or dehumidification.
Unitary Products Group 5
262292-YTG-B-0107
Anytime there is a call for 2 stages of cooling, the unit will not
operate in the reheat mode, even if there is a call for
dehumidification at "HUM".
The unit will not operate in the reheat mode if there is any call
for heating.
On units with economizers, the unit will not operate in the
reheat mode if there is a call for cooling and the economizer is
operating as first stage of cooling.
All safety devices function as previously described.
"ALTERNATE” MODE
When the RCB detects a need for dehumidification (24VAC) at
"HUM" via the field supplied dehumidistat connected to RHTB-1
and RHTB-2, and there is not a call for cooling, it energizes the
HGR, which energizes the SOL 3, SOL 2, and de-energizes
SOL 1. The unit then operates with circuit #1 in reheat mode
and circuit #2 in cooling mode.
When the room thermostat calls for first stage cooling while
there is still a call for dehumidification, no operational change is
made. The call for cooling is ignored and the unit continues to
operate with circuit #1 in reheat mode and circuit #2 in cooling
mode.
When the room thermostat calls for second stage cooling, the
RCB senses a signal through "Y1" & "Y2" and de-energizes the
HGR, which de-energizes SOL 3 and SOL 2, and energizes
SOL 1. Both circuits operate in the cooling mode.
Indoor blower operation is initiated upon a call for first stage
cooling, second stage cooling or dehumidification.
Anytime there is a call for 2 stages of cooling, the unit will not
operate in the reheat mode, even if there is still a call for
dehumidification at "HUM".
The unit will not operate in the reheat mode if there is any call
for heating.
All safety devices function as previously described.
R
Y1
Y2
G
W1
W2
OCC
C
COM
P4
K1
K2
K4
K3
`
P6
P5
P3
HGRR
HGR
MODE
SELECTION
JUMPER
HUM
DEHUMIDISTAT
HARNESS
CONNECTION
FIGURE 2: REHEAT CONTROL BOARD
6 Unitary Products Group
262292-YTG-B-0107
FIGURE 3: REHEAT CONTROLS - PART 1
UCB
UNIT CONTROL
BOARD
RHB
REHEAT CONTROL
BOARD
TERMINAL
RHTB
REHEAT
BLOCK
HUM
HUMIDIFY
TERMINAL
RHR
REHEAT
RELAY
REHEAT
SOLENOID
1
REHEAT
SOLENOID
UCB
UNIT CONTROL
BOARD
RHB
REHEAT
SOLENOID
2
3
REHEAT
CONTROL
BOARD
FIGURE 4: REHEAT CONTROLS - PART 2
Unitary Products Group 7
262292-YTG-B-0107
FACTORY-INSTALLED OPTIONS
• SINGLE INPUT ELECTRONIC ENTHALPY
ECONOMIZERS - Includes a slide-in / plug-in damper
assembly with fully modulating spring-return motor
actuator capable of introducing up to 100% outdoor air
with nominal 1% leakage type dampers.
The enthalpy system contains one sensor that monitors
the outdoor air and determines when the air is cool
enough and dry enough to provide free cooling.
The rainhood is painted to match the basic unit and must
be field-assembled before installing.
• POWER EXHAUST - Our single economizer options are
available with power exhaust. Whenever the outdoor air
intake dampers are opened for free cooling, the exhaust
fan will be energized to prevent the conditioned space
from being over-pressurized during economizer operation.
The exhaust fan, motor and controls are installed and
wired at the factory. The rain hood must be assembled
and installed in the field.
• MOTORIZED OUTDOOR AIR INT A KE DAMPER Includes a slide-in / plug-in damper assembly with a 2position, spring return motor actuator which opens to a
pre-set position whenever the supply air blower is
operating and will drive fully closed when the blower unit
shuts down.
The rain hood is painted to match the basic unit and must
be field assembled before installing.
• PHENOLIC COATED EVAPORATOR, REHEAT, AND
CONDENSER COILS - Special coating process that
utilizes Technicoat 10-1" processes. Coating is applied by
total immersion of the complete coil for maximum
protection.
• ELECTRIC HEATERS wired for single point power
supply. These nickel chromium heater elements are
provided with limit and automatic reset capability to
prevent operation at excessive temperatures.
• VARIABLE AIR VOLUME (VAV) - A factory-installed
variable frequency drive (VFD), mounted in the Blower
Access compartment, is used to control the speed of the
indoor blower motor in order to maintain a constant static
pressure in the supply duct. A pressure transducer and
VAV control board are mounted inside the control box.
The drive comes completely wired and pre-programmed
from the factory.
An optional, factory-installed manual bypass switch available with factory-installed VFD can be found in the Blower
Motor Access compartment. The switch can be used to
either route power to the VFD for modulating control of the
blower motor, to bypass the drive and operate the motor
at full speed, or to power the drive (and not the motor) for
diagnostic purposes.
Due to space limitations, VAV is not available with any of
the factory-installed BAS options described below, but is
available with ‘BAS-ready’ models. Terminal blocks are
provided in the control box for field wiring of the customerinstalled BAS.
A ‘VFD-ready’ option provides the provisions for a customer-installed drive. The unit comes with a mounting
bracket installed in the Blower Access compartment which
may accommodate other vendor’s drives depending on
their size. In order to utilize the unit’s mounting bracket,
the maximum recommended drive dimensions are as follows:
For 5-hp motor applications........................13” H x 6” W x 7” D
For 7.5 thru 15-hp motor applications.........13” H x 8” W x 8” D
If the customer-installed drive will not fit in the allotted
space, then it will have to be mounted within a NEMA-4
enclosure for outside installation or inside the building on
a perpendicular wall not subjected to excessive temperature, vibration, humidity, dust, corrosive gas, explosive
gas, etc.
A terminal block located in the control box is provided for
field connection of the VFD controls.
• HOT GAS BYPASS - To allow for low cooling load operation, a direct-acting pressure-modulating bypass control
valve installed on the system #1 discharge line is used to
divert high temperature, high pressure refrigerant around
the TXV in order to maintain a desired minimum evaporator
pressure. HGBP is standard on all units with VAV and
optional with CV units.
• FILTER OPTIONS - Standard units are shipped with 2”
throw-away filters installed. 2” pleated and 4” pleated
filters are offered as a factory installed op t io n .
• CONVENIENCE OUTLET - This 110 volt outlet can be
“powered” by the unit with a stepdown transformer or you
may order the unit with a “non-powe re d” convenience
outlet that can be wired in the field.
• DISCONNECT SWITCH - For gas heat units and cooling
units with electric heat, a HACR breaker sized to the unit
is provided. For cooling only units, a switch sized to the
largest electric heat available for the particular unit is
provided. Factory installed option only.
• DOUBLE WALL CONSTRUCTION - Optional double wall
construction is available to provide smooth inner surfaces
for easy and effective cleaning to reduce risk of dirt and
bacterial accumulation. Fiberglass insulation is
sandwiched between heavy gauge steel sheets to form a
durable, rigid casing to withstand higher working
pressures and impact forces. The heavy-duty construction
provides excellent acoustic and thermal insulation and
eliminates erosion of insulation material and
contamination of the air stream.
• BAS - Building Automation System Controls
(available on two-system cooling product only).
Simplicity® INTELLI-Comfort™ CONTROL - The York®
Simplicity® INTELLI-Comfort™ control is factory installed.
It includes a supply air sensor, a return air sensor , and an
outside air sensor. There are provisions for a field installed
dirty filter indicator switch, an air-proving switch, an Outside Air Humidity sensor, a Return Air Humidity sensor, an
Inside IAQ sensor, and an Outside Air IAQ sensor. Con-
8 Unitary Products Group
262292-YTG-B-0107
struction mode operation, 365-day real time clock with 7
day programming plus holiday scheduling is built-in. Two
different modes of demand ventilation are achieved
through the INTELLI-Comfort™ using CO
sensors. It
2
uses an inside CO2 sensor to perform Demand Ventilation. It can also use an Outside CO2 sensor to perform Differential Demand Ventilation. It uses a Patented Comfort
Ventila ti on algorithm to provide comfortable ventilation air
temperature. The patented economizer-loading algorithm
will protect the equipment when harsh operating conditions exist. Humidity in the occupied space or return duct
can be monitored and controlled via humidity sensors and
the on-board connection for hot gas re-heat system. It
uses the INTELLI-Start™ algorithm to maximize energy
savings by recovering the building from the Unoccupied
Setpoints to the Occupied Setpoints just in time for the
Occupied Time Period to begin. The Simplicity® INTELLIComfort™ balances space temperature, ventilation air
temperature, CO
and humidity for ultimate comfort.
2
Simplicity® INTELLI-Comfort™ with ModLINC CON-
TROL - The York® Simplicity® INTELLI-Comf ort™ with
ModLINC control is factory installed. It includes all the features of the INTELLI-Comfort™ control with an additional
control to translate communications from MODBUS to the
BACnet MSTP protocol.
Novar® BAS CONTROL - The Novar® ETC-3 building
automation system controller is factory installed. Includes
supply air sensor, return air sensor, dirty filter indicator
switch, and air proving switch.
JOHNSON CONTROLS BAS CONTROL - The Johnson
Control YK-UNT-1126 building automation system controller is factory installed. Includes supply air sensor, return
air sensor, dirty filter indicator switch, and air proving
switch.
CPC BAS CONTROL - The Computer Process Controls
Model 810-3060 ARTC Advanced Rooftop building automation system controller is factory installed. Includes supply air sensor , ret ur n air sens or, dirty filter indicator switch
and air proving switch.
HONEYWELL BAS CONTROL - The Honeywell W7750C
building automation system controller is factory installed.
Includes air supply sensor, return air sensor, dirty filter
indicator switch, and air proving switch.
• COIL GUARD - Customers can purchase a coil guard kit
to protect the condenser coil from damage. This is not a
hail guard kit.
• SMOKE DETECTORS - (supply air & return air) The
smoke detectors stop operation of the unit by interrupting
power to the control board if smoke is detected within the
air compartment.
Factory installed smoke detectors in the return air,
may be subjected to freezing temperatures during
“off” times due to out side air infiltration. these smoke
detectors have an operational limit of 32°F to 131°F.
smoke detectors installed in areas that could be out
side those limitations will have to be moved to prevent
having false alarms.
• STAINLESS STEEL HEAT EXCHANGER - For
applications in corrosive environments, this option
provides a full stainless steel heat exchanger assembly.
• STAINLESS STEEL DRAIN PAN - An optional rust-proof
stainless steel drain pan is available to provide years of
trouble-free operation in corrosive environments.
• PHASE MONITORS - Designed to prevent unit damage.
The phase monitor will shut the unit down in an out-ofphase condition.
• HIGH SPEED DRIVE - May include a belt, blower pulley,
motor pulley or a motor change to enhance blower
performance.
• DIRTY FILTER SWITCH - This kit includes a differential
pressure switch that energizes the fault light on the unit
thermostat, indicating that there is an abnormally high
pressure drop across the filters. Factory installed option or
field installed accessory.
• HINGED FILTER DOOR/”TOOLLESS” BLOWER AND
ACCESS PANELS (not hinged) - This option allows for
easy access and maintenance.
NOTE: Knobs are shipped separately within the unit to
prevent shipping damage. These must be field
installed for toolless operation.
• LOW SPEED DRIVE - Includes a motor change when
high airflow is not required. (WR300 & WR240 only)
FIELD-INSTALLED ACCESSORIES
• SINGLE INPUT ELECTRONIC ENTHALPY
ECONOMIZERS - Includes a slide-in / plug-in damper
assembly with fully modulating spring-return motor
actuator capable of introducing up to 100% outdoor air
with nominal 1% leakage type dampers.
The enthalpy system contains one sensor that monitors
the outdoor air and determines when the air is cool
enough and dry enough to provide free cooling.
The rainhood is painted to match the basic unit and must
be field-assembled before installing.
• MOTORIZED OUTDOOR AIR INTAKE DAMPER -
Includes a slide-in / plug-in damper assembly with a 2position, spring return motor actuator which opens to
some pre-set position whenever the supply air blower is
operating and will drive fully closed when the blower unit
shuts down.
The rain hood is painted to match the basic unit and must
be field-assembled before installing.
Unitary Products Group 9
262292-YTG-B-0107
Power exhaust is not available as a field installed
option.
• ROOF CURBS - Fourteen-inch high roof curbs provide a
water-tight seal between the unit and the finished roof.
These full perimeter curbs meet the requirements of the
National Roofing Contractors Association (NRCA) and are
shipped knocked-down for field assembly.
They're designed to fit inside the base rails of the unit and
include both a wood nailing strip and duct hanger
supports.
• HIGH ALTITUDE NATURAL GAS - Burner orifices and
pilot orifices are provided for proper furnace operation at
altitudes up to 6,000 feet.
• PROPANE - Burner orifices, pilot orifices and gas valve
parts are provided to convert a natural gas furnace to
propane.
• HIGH ALTITUDE PROPANE - Burner orifices and pilot
orifices are provided for proper furnace operation at
altitudes up to 6,000 feet. This accessory supplements the
basic propane conversion kit.
• SIDE DUCT FLANGES - One-inch flanges replace the
supply and return air panels on the rear of the unit to
accommodate horizontal duct connections. These flanges
can also be used individually for bottom supply/horizontal
return or horizontal supply/bottom return. They cannot be
used on units with power exhaust.
• BAROMETRIC RELIEF DAMPER - This damper
accessory can be used to relieve internal building air
pressure on units with an economizer without power
exhaust. This accessory includes a rain hood, a bird
screen and a fully assembled damper. With bottom duct
connections, the damper should be mounted over the
opening in the return air panel. With horizontal ductwork,
the accessory should be mounted on the return air duct.
• ENTHALPY ACCESSORY CONTROL KIT - This kit
contains the required components to convert a single
enthalpy economizer to dual enthalpy.
• BURGLAR BARS - Mount in the supply and return
openings to prevent entry into the duct work.
• FLUE EXHAUST EXTENSION KIT - In locations with
wind or weather conditions which may interfere with
proper exhausting of furnace combustion products, this kit
can be installed to prevent the flue exhaust from entering
nearby fresh air intakes.
• WOOD SKID - Allows unit to be handled with 90” forks.
SENSOR - Senses CO2 levels and automatically
• CO
2
overrides the economizer when levels rise above the
present limits.
• COIL GUARD - Customers can purchase a coil guard kit
to protect the condenser coil from damage. This is not a
hail guard kit.
• PHASE MONITORS - Designed to prevent unit damage.
The phase monitor will shut the unit down in an out-ofphase condition.
10 Unitary Products Group
262292-YTG-B-0107
TABLE 1: SOUND POWER RATING
UNIT
SIZE
WR180 6,000 1.00 1,080 4.60 99 99 89 82 84 77 72 67 89 56
WR240 8,000 1.00 1,120 6.65 102 102 92 85 87 80 75 70 92 59
WR300 10,000 1.30 1160 12.5 108 108 98 91 93 86 81 76 98 65
1. These values have been accessed using a model of sound propagation from a point source into the hemispheric\free field. The dBA
2. At a distance of 10 feet from the blower.
CFM
values provided are to be used for reference only. Calculation of dBA values cover matters of system design and the fan manufacture
has no way of knowing the details of each system. This constitutes and expectation to any specification or guarantee requiring a dBA
value or sound data in any other form than sound power level ratings.
ESP BLOWER
IWG RPM BHP 63 125 250 500 1,000 2,000 4,000 8,000
TABLE 2: CAPACITY RATINGS - (ARI 360)
MODEL MBH
COOLING ONLY
WR180C/E00
WR240C/E00
WR300C/E00
COOLING WITH GAS HEAT
WR180N/S
WR240N/S
WR300N/S
COOLING WITH ELECTRIC HEAT
WR180E18
WR180E36
WR180E54
WR180E72
WR240E18
WR240E36
WR240E54
WR240E72
WR300E18
WR300E36
WR300E54
WR300E72
1. Certified in accordance with the Unitary Large Equipment
certification program which is based on ARI Standard 340/
360.
2. EER = Energy Efficiency Ratio at full load - the cooling
capacity in Btu’s per hour (Btuh) divided by the power input in
watts, expressed in Btuh per watt (Btuh/watt).
3. IPLV = Integrated Part Load Value.
1
1
2
EER
180 11.9 12.7
240 11.0 11.3
300 10.0 10.6
180 11.9 12.7
240 11.0 11.3
300 10.0 10.6
180 11.9 12.7
180 11.9 12.7
178 11.7 12.5
178 11.7 12.5
240 11.0 11.3
240 11.0 11.3
238 10.8 11.1
238 10.8 11.1
300 10.0 10.6
300 10.0 10.6
298 9.8 10.4
298 9.8 10.4
IPLV
SOUND POWER (db 10
Octave Band Centerline Frequency (Hz)
-12
TABLE 3: GAS HEAT RATINGS
3
MODEL MBH INPUT MBH OUTPUT
WR180N/S24
WR180N/S32
WR240N/S24
WR240N/S32
WR300N/S24
WR300N/S32
NOTE:All gas units are two-stage heating.
First stage is 50% of total.
S.S.E. = Steady State Efficiency (80%) - output divided by input.
For units with VFD and electric or gas heat, the
speed of the indoor blower motor continues to
be controlled by duct static pressure via the
VAV control board.
If there are VAV boxes present in the duct system, the boxes must be driven to th e full-open
position using a customer-supplied power
source to assure adequate airflow across electric heating elements or gas heat exchanger
tubes.
Watts)
SWL
dB(A)
300 240
400 320
300 240
400 320
300 240
400 320
dB(A)
@
10Ft.
2
Unitary Products Group 11
262292-YTG-B-0107
TABLE 4: COOLING CAPACITIES FOR WR180
Air on Evaporator Coil
CFM
WB
(°F)
Total
Cap.
(MBH)
2
Total
1
Input
(kW)
90 85 80 75 70 65 90 85 80 75 70 65
75°F 85°F
Sensible Capacity (MBH)
Return Dry Bulb (°F)
77 21710.874715945301621011.8807358432814
3750
72 200 10.5 115 100 86 72 57 43 193 11.6 114 99 85 70 55 40
67 184 10.2 156 128 113 99 84 70 177 11.3 148 126 111 96 82 67
62 165 9.9 163 153 132 117 103 88 160 11.0 159 152 130 116 101 86
77 227 11.0 100 83 66 48 31 14 219 11.9 99 81 64 47 29 12
4500
72 210 10.6 130 113 96 78 61 44 202 11.7 128 111 93 76 59 41
67 192 10.3 161 143 126 108 91 74 185 11.4 158 140 123 106 88 71
62 172 10.0 171 164 147 129 112 95 167 11.1 166 162 144 127 109 92
57 171 10.0
171 171 152 135 118 100 166 11.1 166 166 150 132 115 97
77 237 11.1 127 95 72 52 32 11 228 12.1 117 90 70 50 30 10
5250
72 219 10.8 146 126 105 85 65 45 210 11.8 143 123 102 82 62 42
67 201 10.4 165 159 139 118 98 78 192 11.5 168 155 135 115 94 74
62 180 10.1 178 175 161 141 121 101 174 11.3 173 171 158 138 118 98
57 178 10.1
178 178 168 148 127 107 173 11.2 173 173 164 144 124 104
77 247 11.2 153 107 79 56 32 9 237 12.2 136 99 76 53 31 8
6000
72 228 10.9 161 138 115 92 69 45 219 11.9 157 134 111 88 66 43
67 209 10.5 170 170 151 128 105 82 200 11.6 178 169 146 124 101 78
62 187 10.2 186 186 176 153 130 107 181 11.4 180 180 172 149 126 103
57 186 10.2
186 186 183 160 137 114 180 11.3 180 180 178 155 133 110
72 236 10.9 176 150 125 99 73 47 226 11.9 171 145 120 95 70 44
6750
67 217 10.6 184 187 164 138 112 86 207 11.7 185 181 158 133 108 82
62 194 10.3 193 193 188 162 136 110 187 11.4 186 186 182 157 131 106
57 193 10.2
193 193 191 166 140 114 186 11.3 186 186 185 160 135 109
72 245 10.9 191 163 134 106 77 49 233 12.0 184 157 129 101 74 46
7500
67 224 10.6 199 199 177 148 120 91 213 11.7 192 192 170 142 114 87
62 201 10.3 199 199 199 171 142 114 193 11.4 192 192 192 164 137 109
57 200 10.3
200 200 200 171 143 114 192 11.4 192 192 192 165 137 109
95°F 105°F
77 20312.887725742271219514.37769533822 6
3750
72 186 12.6 113 98 83 68 53 38 179 14.1 111 96 80 64 49 33
67 170 12.4 139 124 109 94 79 64 164 13.9 144 122 107 91 75 60
62 155 12.1
155 152 129 114 99 84 151 13.7 148 149 125 109 94 78
77 21112.997806245271020214.49577594123 5
4500
72 194 12.7 126 109 91 74 56 39 186 14.2 124 106 88 70 52 34
67 177 12.5 155 137 120 103 85 68 170 14.0 153 135 117 99 81 63
62 161 12.3
57 161 12.2
161 159 142 124 107 89 157 13.8 155 155 137 119 101 83
161 161 147 129 112 95 156 13.7 156 156 141 123 105 87
77 219 13.0 108 88 68 48 28 8 209 14.5 113 84 64 44 23 3
5250
72 202 12.8 139 119 99 79 59 39 192 14.3 136 116 96 75 55 35
67 184 12.6 171 151 131 111 91 71 175 14.1 162 148 127 107 87 66
62 168 12.4
57 168 12.3
168 167 155 135 115 95 162 13.8 162 161 149 129 109 88
168 168 160 140 120 100 162 13.8 162 162 154 134 113 93
77 228 13.2 119 96 74 51 29 6 216 14.6 131 92 69 47 24 1
6000
72 209 13.0 153 130 108 85 63 40 199 14.4 149 126 104 81 58 35
67 191 12.7 186 164 141 119 96 74 181 14.2 167 161 138 115 92 70
62 174 12.5
57 174 12.4
174 174 167 145 122 100 168 13.9 167 167 162 139 116 94
174 174 173 151 128 106 167 13.9 167 167 166 144 121 98
72 216 13.0 165 140 116 91 66 42 204 14.4 160 136 111 86 62 37
6750
67 197 12.8 186 174 152 127 103 78 187 14.2 172 169 148 123 99 74
62 179 12.5
57 179 12.5
179 179 176 151 127 102 172 13.9 172 172 169 145 120 95
179 179 179 154 130 105 172 13.9 172 172 172 147 122 98
72 222 13.0 177 151 124 97 70 43 210 14.4 172 145 119 92 65 39
7500
67 203 12.8 185 185 163 136 109 82 192 14.2 177 177 158 131 105 78
62 185 12.5
57 185 12.5
185 185 185 158 131 104 177 13.9 177 177 177 150 124 97
185 185 185 158 131 104 177 13.9 177 177 177 150 123 97
1. The capacities are gross ratings. For net capacity, deduct air blower motor, MBh = 3.415 x kW. Refer to the appropriate Blower
Performance table for the kW of the supply air blower motor.
2. These ratings include the condenser fan motors (total 1 kW) and the compressor motors but not the supply air blower motor.
Temperature of Air on Condenser Coil
*
Total
Cap.
(MBH)
2
Total
1
Input
(kW)
Sensible Capacity (MBH)
Return Dry Bulb (°F)
*
All Sensible Capacity
12 Unitary Products Group
262292-YTG-B-0107
TABLE 4: COOLING CAPACITIES FOR WR180 (CONTINUED)
Air on Evaporator Coil
CFM
WB
(°F)
Total
Cap.
(MBH)
2
Total
1
Input
(kW)
90 85 80 75 70 65 90 85 80 75 70 65
115°F 125°F
Sensible Capacity (MBH)
Return Dry Bulb (°F)
77 18715.87366503417 - 17917.37460473013 -
3750
72 172 15.6 110 93 77 61 44 28 165 17.1 108 91 74 57 40 23
67 157 15.4 146 120 104 88 71 55 151 16.9 142 118 101 84 67 50
62 147 15.2
147 147 121 104 88 72 143 16.7 145 143 117 100 83 66
77 19315.99274553618 - 18417.39270513213 -
4500
72 177 15.7 122 103 84 66 47 29 169 17.1 119 100 81 62 43 24
67 162 15.5 151 133 114 95 77 58 155 16.9 146 130 111 92 73 54
62 152 15.2 151 151 133 114 96 77 147 16.7
57 151 15.2
151 151 136 117 99 80 146 16.6 146 146 130 111 92 73
77 198 15.9 111 81 60 39 18 - 188 17.4 111 80 56 35 14 -
5250
72 183 15.7 133 113 92 71 51 30 173 17.2 130 109 88 67 46 25
67 167 15.5 156 145 124 103 83 62 159 17.0 150 142 121 100 79 58
62 156 15.3
57 156 15.2
156 156 144 124 103 82 151 16.8 149 149 139 118 97 76
156 156 148 127 106 86 150 16.7 150 150 141 120 99 78
77 204 16.0 130 88 65 42 19 - 193 17.4 130 90 60 37 14 -
6000
72 188 15.8 145 122 99 77 54 31 177 17.2 142 118 95 72 49 26
67 172 15.6 160 157 134 111 88 66 162 17.0 153 147 131 108 84 61
62 161 15.4 160 160 156 133 110 87 154 16.8 153 153 151 127 104 81
57 160 15.3
160 160 160 137 114 91 154 16.7 154 154 153 130 107 84
72 193 15.8 156 131 106 82 57 32 182 17.2 151 127 102 77 52 28
6750
67 176 15.6 165 163 144 119 94 69 166 17.0 157 154 139 115 90 65
62 165 15.4
57 165 15.3
165 165 163 138 113 89 158 16.8 157 157 156 131 107 82
165 165 164 140 115 90 157 16.7 157 157 157 133 107 83
72 198 15.8 167 140 113 87 60 34 186 17.1 161 135 108 82 55 29
7500
67 181 15.6 169 169 153 126 100 73 170 16.9 161 161 148 122 95 69
62 169 15.3
57 169 15.2
169 169 169 143 116 90 162 16.7 161 161 161 135 109 82
169 169 169 143 116 89 161 16.6 161 161 161 136 108 82
1. The capacities are gross ratings. For net capacity, deduct air blower motor, MBh = 3.415 x kW. Refer to the appropriate Blower
Performance table for the kW of the supply air blower motor.
2. These ratings include the condenser fan motors (total 1 kW) and the compressor motors but not the supply air blower motor.
Temperature of Air on Condenser Coil
*
Total
Cap.
(MBH)
2
Total
1
Input
(kW)
Sensible Capacity (MBH)
Return Dry Bulb (°F)
147 146 128 109 90 71
*
All Sensible Capacity
Unitary Products Group 13
262292-YTG-B-0107
TABLE 5: COOLING CAPACITIES FOR WR240
Air on Evaporator Coil
CFM
WB
(°F)
Total
Cap.
(MBH)
2
Total
1
Input
(kW)
90 85 80 75 70 65 90 85 80 75 70 65
75°F 85°F
Sensible Capacity (MBH)
Return Dry Bulb (°F)
77 287 15.1 117 99 80 62 43 25 278 16.4 112 96 77 58 39 20
5000
72 263 14.6 152 134 115 96 78 59 254 16.0 150 131 112 93 74 55
67 238 14.2 187 168 150 131 113 94 230 15.6 187 165 146 127 108 89
62 219 13.8 215 198 176 157 139 120 212 15.3 210 198 172 153 134 115
77 304 15.2 133 111 89 67 45 23 294 16.5 130 108 85 63 41 19
6000
72 278 14.8 171 150 128 106 84 62 269 16.1 169 146 124 102 79 57
67 252 14.3 210 188 166 144 122 100 243 15.7 207 185 162 140 118 95
62 232 14.0 228 217 195 173 151 129 224 15.4 222 214 191 169 147 124
57 229 13.8
229 227 205 183 161 139 222 15.2 222 221 199 177 154 132
77 320 15.4 149 123 98 73 47 22 310 16.7 148 120 94 68 43 17
7000
72 293 14.9 190 165 140 115 90 64 283 16.3 187 162 136 111 85 59
67 265 14.4 233 207 182 157 132 107 256 15.9 226 204 179 153 127 102
62 244 14.1 241 235 214 189 164 138 236 15.5 234 230 210 185 159 134
57 241 13.9
241 240 225 200 175 149 234 15.3 234 234 219 193 167 142
77 337 15.5 165 135 107 78 50 21 325 16.8 167 131 102 74 45 16
8000
72 308 15.1 210 181 153 124 96 67 297 16.4 206 178 149 120 91 62
67 279 14.6 254 227 199 170 142 113 269 16.0 246 224 195 166 137 108
62 257 14.2 254 254 233 205 176 148 248 15.7 246 246 230 201 172 143
57 254 14.1
254 254 245 217 188 160 246 15.5 246 246 239 210 181 152
72 302 15.0 213 184 155 126 97 69 291 16.4 209 180 151 122 93 64
8500
67 274 14.5 249 230 202 173 144 115 264 16.0 241 227 198 169 140 110
62 252 14.2 249 249 239 210 181 152 243 15.6 241 241 233 204 174 145
57 249 14.0
249 249 245 216 187 158 241 15.4 241 241 237 208 179 150
72 296 14.9 216 187 157 128 99 70 285 16.3 212 183 153 124 95 65
9000
67 268 14.4 244 224 205 176 147 118 258 15.9 236 231 201 172 142 113
62 247 14.1 244 244 244 215 186 157 238 15.6 236 236 236 207 177 148
57 244 13.9
244 244 244 215 186 157 236 15.3 236 236 236 207 177 148
95°F 105°F
77 270 17.6 105 93 73 54 35 15 255 19.4 103 89 70 50 31 11
5000
72 246 17.3 147 127 108 89 69 50 234 19.1 143 124 104 85 65 46
67 222 17.0 188 162 143 123 104 84 212 18.8 183 158 139 119 100 80
62 206 16.7 205 197 169 149 130 111 195 18.5 192 190 164 144 125 105
77 285 17.8 127 104 82 59 36 14 269 19.6 127 101 78 55 32 9
6000
72 259 17.5 166 143 120 97 75 52 246 19.3 162 139 116 93 70 48
67 234 17.2 204 181 159 136 113 91 224 19.0 197 177 155 132 109 86
62 217 16.8 216 210 188 165 142 120 206 18.7 204 202 183 160 137 114
57 216 16.6
216 216 193 170 147 125 205 18.1 205 205 185 162 139 117
77 299 17.9 149 116 90 64 38 12 283 19.8 150 112 86 59 33 7
7000
72 273 17.6 184 158 132 106 80 54 259 19.5 180 154 128 102 76 49
67 247 17.3 220 201 175 149 123 97 236 19.2 211 197 170 144 118 92
62 228 17.0 227 224 207 181 155 129 217 18.8 216 214 201 175 149 123
57 227 16.7
227 227 212 186 160 134 216 18.3 216 216 204 178 152 125
77 314 18.1 171 128 98 69 40 10 297 19.9 173 123 94 64 34 5
8000
72 286 17.8 203 174 145 115 86 56 272 19.6 199 169 140 110 81 51
67 259 17.5 236 220 191 162 132 103 248 19.3 225 216 186 157 127 97
62 239 17.1 238 238 226 196 167 138 228 19.0 226 226 220 190 161 131
57 238 16.9
238 238 232 203 173 144 226 18.4 226 226 223 193 164 134
72 280 17.7 206 177 147 117 88 58 266 19.6 202 172 143 113 83 53
8500
67 253 17.4 232 224 194 165 135 105 242 19.3 220 212 190 160 130 100
62 234 17.1 233 233 227 197 168 138 223 18.9 222 222 218 188 159 129
57 233 16.8
233 233 230 200 171 141 222 18.4 222 222 220 190 160 130
72 274 17.7 209 179 150 120 90 60 261 19.5 206 175 145 115 85 55
9000
67 248 17.4 227 227 197 168 138 108 237 19.2 216 209 193 163 133 103
62 229 17.1 228 228 228 198 168 139 218 18.9 217 217 217 186 156 126
57 228 16.8
228 228 228 198 169 139 217 18.3 217 217 217 187 157 126
1. The capacities are gross ratings. For net capacity, deduct air blower motor, MBh = 3.415 x kW. Refer to the appropriate Blower
Performance table for the kW of the supply air blower motor.
2. These ratings include the condenser fan motors (total 1 kW) and the compressor motors but not the supply air blower motor.
Temperature of Air on Condenser Coil
*
Total
Cap.
(MBH)
2
Total
1
Input
(kW)
Sensible Capacity (MBH)
Return Dry Bulb (°F)
*
All Sensible Capacity
14 Unitary Products Group
262292-YTG-B-0107
TABLE 5: COOLING CAPACITIES FOR WR240 (CONTINUED)
Air on Evaporator Coil
CFM
WB
(°F)
Total
Cap.
(MBH)
2
Total
1
Input
(kW)
90 85 80 75 70 65 90 85 80 75 70 65
115°F 125°F
Sensible Capacity (MBH)
Return Dry Bulb (°F)
77 240 21.3 101 86 66 46 27 - 225 23.1 100 81 63 43 23 -
5000
72 221 21.0 140 120 101 81 61 42 208 22.8 136 117 97 77 57 37
67 202 20.7 179 155 135 115 96 76 192 22.5 174 151 131 111 92 72
62 185 20.4 184 184 159 139 120 100 175 22.2
77 253 21.4 126 97 74 51 28 - 238 23.3 126 93 70 47 23 -
6000
72 233 21.1 158 135 112 89 66 43 220 23.0 154 131 108 85 62 38
67 214 20.8 190 173 150 127 104 81 203 22.7 183 169 146 123 100 77
62 195 20.5 194 194 177 154 131 108 185 22.3 184 184 172 149 126 103
57 194 19.7
194 194 177 154 131 108 184 21.2 184 184 170 147 123 100
77 267 21.6 151 108 81 55 29 - 250 23.4 151 105 77 50 24 -
7000
72 246 21.3 176 150 124 97 71 44 232 23.1 172 146 119 93 66 39
67 225 21.0 202 192 166 139 113 87 214 22.8 192 188 161 135 108 82
62 206 20.7 205 205 196 169 143 116 195 22.5 193 194 190 163 137 110
57 205 19.8
205 205 196 169 143 117 194 21.4 194 194 187 161 134 108
77 280 21.8 176 119 89 59 29 - 263 23.6 176 117 84 54 24 -
8000
72 258 21.5 195 165 135 105 76 46 244 23.3 190 160 130 100 70 41
67 236 21.1 213 211 181 152 122 92 225 23.0 204 204 177 147 117 87
62 216 20.8 215 215 214 184 154 124 205 22.7 204 204 205 178 148 118
57 215 20.0
215 215 214 184 154 125 204 21.5 204 204 204 175 145 115
72 252 21.4 198 168 138 108 78 48 238 23.2 194 164 134 103 73 43
8500
67 231 21.1 209 201 185 155 125 95 220 22.9 198 189 181 151 120 90
62 211 20.8 210 210 209 179 149 119 200 22.6 199 199 200 170 140 110
57 210 19.9
210 210 210 180 149 119 199 21.5 199 199 199 169 139 108
72 247 21.3 202 172 141 111 80 50 233 23.1 194 168 137 106 76 45
9000
67 226 21.0 205 190 190 159 129 98 215 22.8 194 171 186 155 124 94
62 206 20.7 205 205 205 175 144 114 195 22.5 194 194 194 163 132 101
57 205 19.8 205 205 205 175 144 114 194 21.4
1. The capacities are gross ratings. For net capacity, deduct air blower motor, MBh = 3.415 x kW. Refer to the appropriate Blower
Performance table for the kW of the supply air blower motor.
2. These ratings include the condenser fan motors (total 1 kW) and the compressor motors but not the supply air blower motor.
Temperature of Air on Condenser Coil
*
Total
Cap.
(MBH)
2
Total
1
Input
(kW)
Sensible Capacity (MBH)
Return Dry Bulb (°F)
175 174 154 134 115 95
194 194 194 163 132 102
*
All Sensible Capacity
Unitary Products Group 15
262292-YTG-B-0107
TABLE 6: COOLING CAPACITIES FOR WR300
Air on Evaporator Coil
CFM
WB
(°F)
Total
Cap.
(MBH)
2
Total
1
Input
(kW)
90 85 80 75 70 65 90 85 80 75 70 65
75°F 85°F
Sensible Capacity (MBH)
Return Dry Bulb (°F)
77 331 17.7 186 162 137 113 88 64 322 20.0 168 144 119 95 70 46
6250
72 315 17.2 212 187 163 138 114 90 303 19.4 199 175 151 126 102 78
67 299 16.7 237 213 188 164 140 115 284 18.8 231 206 182 158 133 109
62 273 16.3 265 257 231 207 182 158 259 18.4 253 249 223 198 174 149
77 380 20.7 217 189 160 131 102 73 371 23.3 197 168 139 110 82 53
7500
72 362 20.1 247 218 189 161 132 103 349 22.6 234 205 176 147 118 89
67 343 19.5 277 248 219 190 161 133 327 21.9 271 242 213 184 155 126
62 313 19.0 305 299 269 240 211 182 298 21.4 292 289 260 231 202 173
57 305 18.5
305 305 288 259 230 201 292 20.9 292 292 279 250 221 192
77 378 21.0 220 190 161 131 102 73 370 23.4 200 170 141 111 82 52
7750
72 360 20.3 249 220 191 161 132 102 348 22.7 237 207 178 148 119 89
67 342 19.7 279 250 221 191 162 132 326 22.0 274 245 215 186 156 127
62 312 19.2 304 301 270 241 212 182 298 21.5 292 290 263 233 204 174
57 304 18.7
304 304 290 260 231 201 292 21.0 292 292 282 253 223 194
77 376 21.2 222 192 162 132 102 72 370 23.6 203 172 142 112 82 52
8000
72 358 20.6 252 222 192 162 132 102 348 22.9 240 210 180 150 119 89
67 340 19.9 282 252 222 192 162 132 326 22.1 278 248 217 187 157 127
62 310 19.4 303 303 272 242 212 182 297 21.7 292 292 266 236 205 175
57 303 18.9
303 303 291 261 231 201 292 21.1 292 292 285 255 225 195
72 356 20.6 259 228 197 166 135 104 347 23.0 248 216 185 154 123 92
8650
67 338 20.0 290 259 228 197 166 135 326 22.3 284 255 224 193 162 131
62 309 19.4 301 300 279 248 217 187 297 21.8 291 291 274 243 211 180
57 301 18.9
301 301 295 264 233 202 291 21.3 291 291 288 257 226 195
72 354 20.7 266 234 202 170 139 107 347 23.1 255 223 191 159 126 94
9300
67 336 20.1 299 265 234 202 170 138 325 22.4 291 263 230 198 166 134
62 307 19.5 299 299 286 255 223 191 296 21.9 291 291 282 250 217 185
57 299 19.0
299 299 299 267 235 203 291 21.4 291 291 291 259 227 194
95°F 105°F
77 313 22.2 150 125 101 77 53 28 297 24.4 139 117 92 68 44 20
6250
72 291 21.5 187 163 138 114 90 66 276 23.7 180 155 131 107 83 59
67 268 20.8 200 200 176 151 127 103 256 23.1 220 194 170 146 122 98
62 245 20.5 241 241 214 190 165 141 232 22.6 230 225 199 175 151 127
77 362 25.8 177 148 119 90 61 32 343 28.3 166 137 109 80 51 22
7500
72 336 25.0 220 192 163 134 105 76 319 27.6 212 183 154 125 97 68
67 310 24.2 264 235 206 178 149 120 295 26.8 257 229 200 171 142 113
62 283 23.8 279 279 251 222 194 165 268 26.3 266 262 234 205 177 148
57 279 23.2
279 279 270 241 213 184 266 25.8 266 266 256 227 198 170
77 362 25.9 180 150 121 91 61 32 343 28.5 171 140 110 81 51 22
7750
72 337 25.1 224 195 165 136 106 76 319 27.7 216 186 156 127 97 68
67 311 24.3 269 239 210 180 150 121 296 26.9 260 232 203 173 144 114
62 283 23.9 280 280 255 226 196 166 268 26.4 266 264 238 208 179 149
57 280 23.3
280 280 275 245 215 186 266 25.9 266 266 260 230 201 171
77 363 26.0 183 153 123 92 62 31 343 28.6 176 142 112 82 51 21
8000
72 338 25.2 229 198 168 137 107 77 320 27.8 219 189 159 129 98 68
67 312 24.3 274 243 213 183 152 122 296 27.1 263 236 206 175 145 115
62 284 23.9 281 281 259 229 198 168 269 26.6 266 266 241 211 181 150
57 281 23.4
281 281 279 248 218 188 266 26.1 266 266 264 233 203 173
72 339 25.3 236 205 173 142 111 79 321 27.9 227 196 165 133 102 71
8650
67 313 24.5 278 252 220 189 157 126 297 27.1 266 245 213 182 151 119
62 285 24.1 282 282 268 237 205 174 270 26.6 267 267 250 219 187 156
57 282 23.6
282 282 281 249 218 187 267 26.1 267 267 266 235 203 172
72 340 25.5 244 211 179 147 114 82 322 28.0 235 203 170 138 106 73
9300
67 314 24.7 283 260 227 195 163 130 298 27.2 268 253 221 189 156 124
62 286 24.3 283 283 277 244 212 180 271 26.7 268 268 259 226 194 162
57 283 23.8
283 283 283 250 218 185 268 26.2 268 268 268 236 203 171
1. The capacities are gross ratings. For net capacity, deduct air blower motor, MBh = 3.415 x kW. Refer to the appropriate Blower
Performance table for the kW of the supply air blower motor.
2. These ratings include the condenser fan motors (total 1 kW) and the compressor motors but not the supply air blower motor.
All Sensible Capacity
Temperature of Air on Condenser Coil
*
Total
Cap.
(MBH)
2
Total
1
Input
(kW)
Sensible Capacity (MBH)
Return Dry Bulb (°F)
*
16 Unitary Products Group
262292-YTG-B-0107
TABLE 6: COOLING CAPACITIES FOR WR300 (CONTINUED)
Air on Evaporator Coil
CFM
WB
(°F)
Total
Cap.
(MBH)
2
Total
1
Input
(kW)
90 85 80 75 70 65 90 85 80 75 70 65
115°F 125°F
Sensible Capacity (MBH)
Return Dry Bulb (°F)
77 281 26.6 128 108 84 60 36 12 265 28.8 122 99 75 51 27 -
6250
72 262 26.0 172 148 124 100 76 52 248 28.2 165 141 117 93 69 45
67 243 25.3 216 188 164 140 116 92 230 27.5 207 183 159 135 111 87
62 220 24.8 218 209 185 161 137 113 208 26.9 207 193 170 146 122 98
77 324 30.9 155 127 98 70 41 12 305 33.5 149 116 88 59 31 -
7500
72 302 30.2 203 174 146 117 88 60 285 32.8 194 166 137 109 80 52
67 280 29.4 250 222 193 164 136 107 265 32.0 239 215 186 158 129 101
62 254 28.8 252 245 217 188 159 131 239 31.3
57 252 28.4
252 252 241 213 184 155 239 30.9 239 239 227 198 170 141
77 324 31.1 162 129 100 70 41 11 304 33.7 157 118 89 60 31 -
7750
72 302 30.4 207 177 148 118 89 60 284 33.0 198 168 139 110 80 51
67 280 29.6 251 225 196 166 137 108 264 32.3 238 218 189 160 130 101
62 254 29.0 252 249 220 190 161 132 239 31.6 238 233 202 173 143 114
57 252 28.5
252 252 245 215 186 157 238 31.1 238 238 230 201 171 142
77 323 31.3 168 131 101 71 41 11 303 34.0 164 120 90 60 30 -
8000
72 302 30.5 210 180 150 120 89 59 284 33.2 201 171 141 111 81 51
67 280 29.8 252 229 199 168 138 108 264 32.5 238 222 191 161 131 101
62 253 29.2 252 252 223 193 163 132 238 31.8
57 252 28.7
252 252 248 218 188 158 238 31.4 238 238 233 203 173 143
72 303 30.5 218 187 156 125 93 62 284 33.1 209 178 147 116 85 53
8650
67 281 29.8 253 238 206 175 144 113 265 32.4 239 231 200 168 137 106
62 254 29.2 253 253 232 201 169 138 239 31.7 239 239 214 182 151 120
57 253 28.7
253 253 251 220 189 157 239 31.3 239 239 236 205 174 143
72 304 30.5 226 194 162 129 97 65 285 33.0 218 185 153 121 89 56
9300
67 282 29.8 254 247 214 182 150 117 265 32.3 239 239 208 176 143 111
62 255 29.1 254 254 241 208 176 144 240 31.6 239 239 222 190 158 126
57 254 28.7
254 254 254 221 189 157 239 31.2 239 239 239 207 175 143
1. The capacities are gross ratings. For net capacity, deduct air blower motor, MBh = 3.415 x kW. Refer to the appropriate Blower
Performance table for the kW of the supply air blower motor.
2. These ratings include the condenser fan motors (total 1 kW) and the compressor motors but not the supply air blower motor.
Temperature of Air on Condenser Coil
*
Total
Cap.
(MBH)
2
Total
1
Input
(kW)
Sensible Capacity (MBH)
Return Dry Bulb (°F)
239 228 199 171 142 114
238 238 205 175 145 115
*
All Sensible Capacity
Unitary Products Group 17
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