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GrandCanyonGasLogs.com
customerservice@grandcanyongaslogs.com
CAUTION: If control has been exposed to water in
any way, it must be replaced. If gas valve fails to shut
off, do not turn off electrical power. Turn off gas supply
allowing fan or circulating pump (if so equipped) to con-
tinue running until system has cooled. Replace control.
Millivolt System
The millivolt system and individual components may
be checked with a millivolt meter having a 0-1000 MV
range. Before checking system, be certain wall thermo-
stat lead wire does not exceed length recommended in
Wiring Section Table, and all connections are clean and
tight.
Conduct each check shown in chart below by con-
necting meter test leads to terminals as indicated. All
readings are closed circuit.
PROCEDURE FOR LIGHTING OR RELIGHTING
Dials must be operated by hand. DO NOT use pliers,
wrenches or other tools to turn dials.
The Gas Cock Dial has a dual function:
A) Complete control of gas to pilot and main burner.
B) When in pilot position, it is the reset mechanism for
the automatic pilot.
The Gas Cock Dial cannot be turned to “OFF” position
without first depressing dial in “PILOT” position and
then rotating to “OFF”.
1. Depress and turn Gas Cock Dial to “OFF” position.
2. Turn temperature dial (hydraulic models) or wall
thermostat (24V and millivolt models) to “OFF”
or lowest setting.
3. Wait at least 5 minutes (10 minutes for L.P. gas)
to allow gas which may have accumulated in burner
compartment to escape.
4. Turn Gas Cock Dial to the “PILOT” position.
5. Hold match at pilot burner. CAUTION: If pilot lights
without depressing Gas Cock Dial replace
control. Depress and hold Gas Cock Dial while
lighting pilot burner. Allow pilot to burn approximately
one half minute. (1-1/2 minutes for millivolt models)
before releasing Gas Cock Dial. If pilot does not
remain lighted, repeat operation allowing longer
period before releasing Gas Cock Dial. (Adjust pilot,
if necessary, as noted under “Pilot Burner
Adjustment.”) The thermo- couple or thermopile
may also be defective and should be checked out.
(See SERVICE INSTRUCTIONS.)
LEAK TEST
Test for gas leaks after valve installation with main
burner on. Use a rich soapy water, and paint all piping
and tubing joints liberally. Bubbles are indicative of a
leak.
SERVICE INSTRUCTIONS
