6021974-UIM-A-1120
32 Johnson Controls Ducted Systems
Field Installed Electric Heat
The field installed heaters are wired for single point power
supply. Power supply need only be brought into the single point
terminal block, and thermostat wiring to the low voltage terminal
strip located in the upper portion of the unit control box.
These CSA approved heaters are located within the central
compartment of the unit with the heater elements extending in
to the supply air chamber.
Fuses are supplied, where required, by the factory. Some kW
sizes require fuses and others do not. Refer to Table 9 for
minimum CFM limitations and to Table 7 for electrical data.
Optional Gas Heat
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.
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 10: Electric Heat Minimum Supply Air
Size
(Tons)
Voltage
Minimum Supply Air (CFM)
Heater kW
5 7 10 15 20 30
036
(3.0)
208/230-1-60 900 900 900 900 900 -
208/230-3-60 900 900 900 900 900 -
460-3-60 - 900 900 900 900 -
600-3-60 - - 900 900 900 -
048
(4.0)
208/230-1-60 1200 1200 1200 1200 1200 -
208/230-3-60 1200 1200 1200 1200 1200 -
460-3-60 - 1200 1200 1200 1200 -
600-3-60 - - 1200 1200 1200 -
060
(5.0)
208/230-1-60 1500 1500 1500 1500 1500 1500
208/230-3-60 1500 1500 1500 1500 1500 1500
460-3-60 - 1500 1500 1500 1500 1500
600-3-60 - - 1500 1500 1500 1500
072
(6.0)
208/230-3-60 1500 1500 1500 1500 1500 1500
460-3-60 - 1500 1500 1500 1500 1500
600-3-60 - - 1500 1500 1500 1500
Table 11: 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.
H05 50 40 3 TON 47 15 45
H07 75 60 4 TON 70 25 70
H10 100 80 3/5/6 TON 93 45/25 75/55
H12 125 100 4/5/6 TON 116 45/35 75/75
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