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
