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262292-YTG-B-0107
Unitary Products Group 11
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.
TABLE 1: SOUND POWER RATING
1
UNIT
SIZE
CFM
ESP BLOWER
SOUND POWER (db 10
-12
Watts)
Octave Band Centerline Frequency (Hz)
SWL
dB(A)
dB(A)
@
10Ft.
2
IWG RPM BHP 63 125 250 500 1,000 2,000 4,000 8,000
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
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.
2. At a distance of 10 feet from the blower.
TABLE 2: CAPACITY RATINGS - (ARI 360)
1
1. Certified in accordance with the Unitary Large Equipment
certification program which is based on ARI Standard 340/
360.
MODEL MBH
EER
2
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).
IPLV
3
3. IPLV = Integrated Part Load Value.
COOLING ONLY
WR180C/E00
180 11.9 12.7
WR240C/E00
240 11.0 11.3
WR300C/E00
300 10.0 10.6
COOLING WITH GAS HEAT
WR180N/S
180 11.9 12.7
WR240N/S
240 11.0 11.3
WR300N/S
300 10.0 10.6
COOLING WITH ELECTRIC HEAT
WR180E18
180 11.9 12.7
WR180E36
180 11.9 12.7
WR180E54
178 11.7 12.5
WR180E72
178 11.7 12.5
WR240E18
240 11.0 11.3
WR240E36
240 11.0 11.3
WR240E54
238 10.8 11.1
WR240E72
238 10.8 11.1
WR300E18
300 10.0 10.6
WR300E36
300 10.0 10.6
WR300E54
298 9.8 10.4
WR300E72
298 9.8 10.4
TABLE 3: GAS HEAT RATINGS
MODEL MBH INPUT MBH OUTPUT
WR180N/S24
300 240
WR180N/S32
400 320
WR240N/S24
300 240
WR240N/S32
400 320
WR300N/S24
300 240
WR300N/S32
400 320
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 sys-
tem, the boxes must be driven to the full-open
position using a customer-supplied power
source to assure adequate airflow across elec-
tric heating elements or gas heat exchanger
tubes.