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349687-JTG-A-1007
Johnson Controls Unitary Products 9
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
J15DJ
6,000 1.00 1,080 4.60 99 99 89 82 84 77 72 67 89 56
J18, 20 DJ
8,000 1.00 1,120 6.65 102 102 92 85 87 80 75 70 92 59
J25DJ
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 guaran-
tee 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 Equip-
ment certification program which is based on ARI Stan-
dard 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
J15DJC/E00
178 12.0 12.5
J18DJC/E00
208 11.7 12.7
J20DJC/E00
230 11.3 12.0
J25DJC/E00
292 10.5 11.2
COOLING WITH GAS HEAT
J15DJN/S
178 12.0 12.5
J18DJN/S
208 11.7 12.7
J20DJN/S
230 11.3 12.0
J25DJN/S
292 10.5 11.2
COOLING WITH ELECTRIC HEAT
J15DJE18
178 12.0 12.5
J15DJE36
178 12.0 12.5
J15DJE54
176 11.8 12.2
J15DJE72
176 11.8 12.2
J18DJE18
208 11.7 12.7
J18DJE36
208 11.7 12.7
J18DJE54
206 11.5 12.4
J18DJE72
206 11.5 12.4
J20DJE18
230 11.3 12.0
J20DJE36
230 11.3 12.0
J20DJE54
228 11.1 11.7
J20DJE72
228 11.1 11.7
J25DJE18
292 10.5 11.2
J25DJE36
292 10.5 11.2
J25DJE54
290 10.3 11.0
J25DJE72
290 10.3 11.0
TABLE 3: GAS HEAT RATIINGS
MODEL MBH INPUT MBH OUTPUT
J15DJN/S24
300 240
J15DJN/S32
400 320
J18DJN/S24
300 240
J18DJN/S32
400 320
J20DJN/S24
300 240
J20DJN/S32
400 320
J25DJN/S24
300 240
J25DJN/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.