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UNIT MODEL SIZE
NOMINAL TONS
VOLTAGE
MINIMUM SUP-
PLY AIR
HEATER SIZE NOMINAL KW
7
10
15
20
30
3
380/415-3-50
M
3
/S
0.47
0.57
0.57
0.61
-
CFM
1100
1200
1200
1300
-
4
380/415-3-50
M
3
/S
0.61
0.61
0.61
0.61
-
CFM
1300
1300
1300
1300
-
5
380/415-3-50
M
3
/S
0.75
0.75
0.75
0.75
0.75
CFM
1600
1600
1600
1600
1600
6.3
380/415-3-50
M
3
/S
0.85
0.85
0.85
0.85
0.85
CFM
1800
1800
1800
1800
1800
826081-XIM-C-0214
12
Johnson Controls Unitary Products
Optional Gas Heat
GAS HEAT
OPTION
INPUT CAPACITY
kW[MBH]
OUTPUT CAPACITY
kW[MBH]
AVAILABLE ON
MODELS
GAS RATE
1
M
3
/
S[Ft
3
/Hr]
TEMPERTURE RISE ºC[°F] AT FULL INPUT
2
NOTE:
Gas Heaters are shipped available for natural gas, but can be converted to L.P. with Kit Model No. 1NP0434.
MIN.
MAX.
N04
15[50]
12[40]
3 TON
0.02[47]
8[15]
25[45]
N06
22[75]
18[60]
4 TON
0.03[70]
14[25]
31[55]
N08
29[100]
23[79]
5/6 TON
0.04[93]
14[25]
31[55]
These gas-fired heaters have aluminized-steel or optional
stainless steel, tubular heat exchangers with spark ignition with
proven pilot.
All gas heaters are shipped from the factory equipped for
natural gas use. See Gas Heat Application Data Table.
For natural gas heating installations in locations requiring low
NOx emissions, Accessory model 1LN0406 must be used.
Gas Piping
Proper sizing of gas piping depends on the cubic feet per hour
of gas flow required, specific gravity of the gas and the length of
run. “National Fuel Gas Code” Z223.1 (in U.S.A.) or the current
Gas Installation Codes CSA-B149.1 (in Canada) should be
followed in all cases unless superseded by local codes or gas
utility requirements. Refer to the Pipe Sizing Table 4.
The heating value of the gas may differ with locality. The value
should be checked with the local gas utility.
NOTE:
There may be a local gas utility requirement specifying
a minimum diameter for gas piping. All units require a
½” pipe connection at the entrance fitting.
Table 2:
Electric Heater Supply Air Limitations
Table 3:
Gas Heat Application Data
1.
Based on 1075 Btu/Ft
3
.
2. The air flow must be adjusted to obtain a temperature rise within the range shown.
All furnaces meet the latest California seasonal efficiency requirements.
Table 4:
GAS PIPE SIZING
12.7mm
19.0mm
25.0mm
32.0mm
[1/2 in.]
[3/4 in.]
[1 in.]
[1-1/4 ]in.
3[10]
3.74[132]
7.87[278]
14.72[520]
29.72[1050]
6[20]
2.60[92]
5.38[190]
9.91[350]
20.66[730]
9[30]
2.07[73]
4.3[152]
8.07[285]
16.70[590]
12[40]
1.78[63]
3.68[130]
6.93[245]
14.15[500]
15[50]
1.58[56]
3.25[115]
6.08[215]
12.45[440]
18[60]
1.42[50]
2.97[105]
5.52[195]
11.32[400]
21[70]
1.30[46]
2.72[96]
5.09[180]
10.47[370]
24[80]
1.22[43]
2.55[90]
4.81[170]
9.91[350]
27[90]
1.13[40]
2.38[84]
4.53[160]
9.06[320]
30[100]
1.08[38]
2.23[79]
4.25[150]
8.63[305]
NOMINAL IRON PIPE SIZE
LENGTH IN
M[FT]
Maximum capacity of pipe in cubic meter/cubic feet of gas per hour.
(Based upon a pressure drop of 7.62mm/0.3 inch water column and
0.6 specific gravity gas).