Johnson Controls J15 Manuel D’Utilisation
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.
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.
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.
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).
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.
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.
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.