Optional Electric Heat; Optional Gas Heat; Gas Piping; Electric Heater Air Flow Rate Limitations - York ZF036 Installation Manual

826081-XIM-C-0214
Table 2: Electric Heater Supply Air Limitations
UNIT MODEL SIZE
NOMINAL TONS
3
4
5
6.3

Optional Gas Heat

These gas-fired heaters have aluminized-steel or optional
stainless steel, tubular heat exchangers with spark ignition with
proven pilot.
Table 3: Gas Heat Application Data
GAS HEAT INPUT CAPACITY
OPTION kW[MBH]
N04 15[50]
N06 22[75]
N08 29[100]
3
1.
Based on 1075 Btu/Ft .
2. The air flow must be adjusted to obtain a temperature rise within the range shown.
NOTE:
Gas Heaters are shipped available for natural gas, but can be converted to L.P. with Kit Model No. 1NP0434.
All furnaces meet the latest California seasonal efficiency requirements.

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followed in all cases unless superseded by local codes or gas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.
12
MINIMUM SUP-
VOLTAGE
PLY AIR
3
M /S
380/415-3-50
CFM
3
M /S
380/415-3-50
CFM
3
M /S
380/415-3-50
CFM
3
M /S
380/415-3-50
CFM
OUTPUT CAPACITY AVAILABLE ON
kW[MBH] MODELS
12[40] 3 TON
18[60] 4 TON
23[79] 5/6 TON
HEATER SIZE NOMINAL KW
7 10
0.47 0.57
1100 1200
0.61 0.61
1300 1300
0.75 0.75
1600 1600
0.85 0.85
1800 1800
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.
1 3
TEMPERTURE RISE ºC[°F] AT FULL INPUT
GAS RATE M /
3
S[Ft /Hr]
0.02[47]
0.03[70]
0.04[93]
Table 4: GAS PIPE SIZING
LENGTH IN
12.7mm
M[FT]
[1/2 in.]
3[10] 3.74[132]
6[20] 2.60[92]
9[30] 2.07[73]
12[40] 1.78[63]
15[50] 1.58[56]
18[60] 1.42[50]
21[70] 1.30[46]
24[80] 1.22[43]
27[90] 1.13[40]
30[100] 1.08[38]
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).
15 20
0.57 0.61
1200 1300
0.61 0.61
1300 1300
0.75 0.75
1600 1600
0.85 0.85
1800 1800
MIN. MAX.
8[15] 25[45]
14[25] 31[55]
14[25] 31[55]
NOMINAL IRON PIPE SIZE
19.0mm 25.0mm 32.0mm
[3/4 in.] [1 in.] [1-1/4 ]in.
7.87[278] 14.72[520] 29.72[1050]
5.38[190] 9.91[350] 20.66[730]
4.3[152] 8.07[285] 16.70[590]
3.68[130] 6.93[245] 14.15[500]
3.25[115] 6.08[215] 12.45[440]
2.97[105] 5.52[195] 11.32[400]
2.72[96] 5.09[180] 10.47[370]
2.55[90] 4.81[170] 9.91[350]
2.38[84] 4.53[160] 9.06[320]
2.23[79] 4.25[150] 8.63[305]
Johnson Controls Unitary Products
30
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-
-
-
0.75
1600
0.85
1800
2