GP-MCH9-BX-10A
SCH-90 / IC-90 Manual
R.D: SEPT 2005
RL:10
KH
Page 10
1.8 LIGHTING / SHUTDOWN INSTRUCTIONS
Thermostat range is 50
o
F
to 100
o
F. Turn Thermostat
clockwise to increase the
room temperature.
Turn counter clockwise all
the way to shut off, call for
heat pilot is on for standby.
1. Pre-purge gas line prior to lighting.
2. Turn the knob counterclockwise to PILOT position, push the knob down and hold in position. The
pilot valve opens and allows gas to flow to the pilot burner.
3. While holding the knob down, light the pilot burner, continue to hold knob down until a strong flame
is present, continue holding for an additional 60 seconds.
4. Release the knob. The shaft moves upward and engages the safety valve level that opens the
safety valve.
5. Turn the knob counterclockwise to the ON position. On a call-for-heat the main valve opens and
the main burner ignites.
6. To shut off the system, turn the knob clockwise to the OFF position. This action closes the main
gas and safety valves. However the power unit must drop out before the lighting sequence can
begin again. The valve drops out within three minutes.
2.0 MAINTENANCE
This heater should be cleaned at least once annually with a dry cloth. This heater should be inspected
before each use and at least once annually by a qualified service person.
The gas hose assembly shall be visually inspected prior to each use of the heater. If damage is evident
it must be replaced prior to the heater being placed into operation. For replacement part information,
see pages 12 & 14.
LP model heaters should use a standard LP gas cylinder. Cylinder must be located a minimum of 10
feet away from heater while heater is in operation. The cylinder must be provided with a system for va-
por withdrawal. The gas must be turned off at the LP gas supply cylinder when the heater is not in use.
The connection of the gas cylinder should be made with the #510 connector which tightens by turning
the threads to the left. To disconnect the fitting make sure the gas is turned off, and loosen threads by
turning them to the right. When heater is to be stored indoors the connection between the LP gas cylin-
der and the heater must be disconnected.
Keep appliance area free and clear from combustible materials, gasoline and other flammable vapors
and liquids. Ensure that the flow of combustion and ventilation air is free from all obstructions.
