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SAFETY SHUT-OFF VALVE TEST
The safety shut-off valve test procedure is as follows:
1 - Turn off the manual gas valve.
2 - Set the thermostat to call for heat.
3 - System begins normal sequence of operation.
4 - After approximately 30 seconds (pre purge period)
the LED will fast flash indicating the gas valve is
powered.
5 - After 10 seconds, the gas valve closes and steps 4
and 5 will repeat two additional times before locking
out the gas valve, which will be indicated by two
flashes on the LED.
6 - To restart the system, de-energize the thermostat
call for heat and follow the operating instructions
under “Unit Start-Up and Operation.“
REPAIR PARTS
When ordering repair parts, include the c omplet e unit model number listed on the unit rat ing plate. For ex-
ample: UHRS -45A-1. Contact the ins t alling dealer, or vis it www. adpnow. c om for a list of dealers in the area.
Inc lude
manufac turer’s or dis tributor’s name and address. It is a requirement in the Z83.8 s tandard.
Service Technician:
START-UP AND PERFORMANCE CHECKLIST
