Soft Lockout
- The control shall not initiate a call for heat or call for contin-
uous fan while in lockout. The control will still respond to an open limit and
undesired flame. Lockout shall automatically reset after one hour. Lockout
may be manually reset by removing power from the control for more than
one second or removing the thermostat call for heat for more than one and
less than 20 seconds.
Hard Lockout
- If the control detects a fault on the control board, the sta-
tus LED will be de-energized, and the control will lockout as long as the
fault remains. A hard lockout will automatically reset if the hardware fault
clears.
Power Interruption
- During a momentary power interruption or at voltage
levels below the minimum operating voltage (line voltage or low voltage)
the system will self-recover without lockout when voltage returns to the
operating range.
Lockout
11. Operation
11.1 Check the Installation Prior to Startup
Check to be sure that all screws used to hold shipping brackets
were re-installed in the heater cabinet.
Check the bottom panel. Remove the protective plastic film on
the bottom panel before heater startup.
If installed in California, verify that the California Warning Label is
displayed.
Check suspension. Unit must be secure and level.
Check clearances. Requirements are in Paragraph 4.1.
Check piping for leaks and proper gas line pressure. Bleed gas
lines of trapped air. See Paragraph 7.1.
Check vent system to be sure that it is installed according to the
instructions in Paragraph 7.2.
Check condensate drain system to be sure that it is installed
according to the instructions in Paragraph 7.3
Check electrical wiring. Be sure all wire gauges are as recom-
mended. A service disconnect switch should be used. Verify that
fusing or circuit breakers are adequate for the load use.
Check polarity. Verify that line voltage exists between the black
“L1” and earth ground.
□
□
□
□
□
□
□
□
□
□
Form I-UEAS, P/N 221232 R6, Page 37
