290699-YIM-B-0607
14 Unitary Products Group
GAS HEAT
These gas-fired heaters have aluminized-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 requir-
ing low NOx emissions, Accessory model 1LN0406
must be used.
NOTE: Gas Heaters are shipped available for natural gas, but can be converted to L.P. with Kit Model No. 1NP0440. All furnaces
meet the latest California seasonal efficiency requirements.
1. Based on 1075 Btu/Ft
3
.
2. The air flow must be adjusted to obtain a temperature rise within the range shown.
TABLE 3: ELECTRIC HEATER CFM LIMITATIONS
UNITMODEL SIZE NOMINAL
TONS
VOLTAGE
MINIMUM SUPPLY AIR CFM
HEATER SIZE NOMINAL KW
5 7 10 15 20 30
3
208/230-3-60 1100 1100 1200 1200 1300 -
460-3-60 - 1100 1200 1200 1300 -
575-3-60 - - 1200 1200 1300 -
4
208/230-3-60 1300 1300 1300 1300 1300 -
460-3-60 - 1300 1300 1300 1300 -
575-3-60 - - 1300 1300 1400 -
5
208/230-3-60 1600 1600 1600 1600 1600 1600
460-3-60 - 1600 1600 1600 1600 1600
575-3-60 - - 1600 1600 1600 1800
6
208/230-3-60 1800 1800 1800 1800 1800 1800
460-3-60 - 1800 1800 1800 1800 1800
575-3-60 - - 1800 1800 1800 1800
TABLE 4: GAS HEAT APPLICATION DATA
GAS HEAT
OPTION
INPUT
CAPACITY
(MBH)
OUTPUT
CAPACITY
(MBH)
AVAILABLE
ON MODELS
GAS RATE
1
(FT
3
/HR)
TEMPERATURE RISE °F AT FULL INPUT
2
MIN. MAX.
N040 50 40 3 TON 47 15 45
N060 75 60 4 TON 70 45 55
N079 100 80 3/5/6 TON 93 40/25/25 70/55/55
N099 125 100 4/5/6 TON 116 45/35/35 75/65/65
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