Replacing the Radiant Heaters

To avoid electrical shock or property damage, disconnect power before installing or servicing equipment. A qualified technician must perform the service procedures.

Checkout

Remove electrical power to unit.
If removing air heaters, remove top vent panel.
Using a crosshead screwdriver, remove the screws securing the heater to the unit.

Remove the wires from the terminals.

SHOCK HAZARD

To avoid electrical shock, perform relay checks or transformer checks as described as instructions.

The following checks are performed with the wall circuit breaker closed and the main power switch in the ON position. Extreme caution should be taken. Make connections before applying power, take reading, and remove power before removing meter leads, or electrical shock could result.

Use chart below to verify faulty heater by taking an Ohm reading of heater and comparing to the NOMINAL COLD RESISTANCE column.

Part No.	Watts	Volts	Nominal Cold Resistance
45065-01	2800	208	14.7
45065-02	1900	208	21.7
45065-03	1550	208	26.6
45065-04	-	-	-
45065-05	2800	240	19.6
45065-06	1900	240	28.9
45065-07	1550	240	35.4
45065-08	-	-	-
45065-09	1650	208	25.0
45065-10	1650	240	33.2
45065-11	1750	208	23.5
45065-12	1750	240	31.3
45065-13	2000	208	20.6
45065-14	2000	240	27.4
45065-15	2800	230	18.0
45065-16	1900	230	26.5
45065-17	1550	230	32.5
45065-18	-	-	-
45065-19	1650	230	30.5
45065-20	1750	230	28.8
45065-21	-	-	-
45065-22	2000	230	25.2
45065-23	1150	208	35.8

The temperature of the heating element would be 70°F.

Replacing

If radiant heater proves defective:

Remove screws from both support brackets.
Pull brackets and heater from unit.
Install new heater in reverse order.