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Maintenance 27
© Travis Industries 4071130 100-01196_000
How this Fireplace Works
This fireplace was designed with safety as the primary concern. Many of the components inside
this fireplace are for safety purposes. Therefore, only certified gas service technicians should
service this fireplace.
What Turns the Main Burners On and Off
This fireplace uses a millivolt system to control its operation (a millivolt is a very small amount of
electricity). The thermopile and thermocouple generate electricity when heated by the pilot
flame. This electricity is used to operate the gas valve. Without enough electricity, the gas valve
will not turn on. That is why when starting the pilot the gas control knob has to be pressed in long
enough for the thermocouple to heat up and generate enough electricity. The thermopile provides
power for the ON/OFF switch, remote control, or thermostat (see the illustration below). Because
the thermopile generates the electricity needed to turn the fireplace on and off, this fireplace can
be operated when the power is out (although the blower will not run).
When heated, the thermopile
generates electricity (a very small
amount measured in "Millivolts").
This electricity is
used to operate the
main burners.
The main burners
are switched on and
off using the
electricity generated
by the thermopile.
The ON/OFF switch,
remote control, or
thermostat control
the circuit to the main
burner.
ON
OFF
MAIN BURNER
What Prevents Gas Buildup
This appliance utilizes a high-technology gas valve in conjunction with a pilot flame to ensure no
gas builds up inside the firebox.
The thermocouple (next to the pilot) senses when the pilot flame is lit. If the pilot flame goes out,
this thermocouple no longer generates electricity, causing the gas valve to automatically shut off
all gas to the heater, preventing the pilot from spilling gas into the firebox.
Gas Valve
This high-technology valve automatically
shuts off all gas if it does not receive a signal
from the thermocouple. If any component is
damaged or sensing a malfunction, or if the
wiring is damaged, it will shut off all gas.
Pilot Flame
The pilot flame is a time-proven
component that eliminates the possibility
of gas buildup inside the firebox.
Thermocouple
The thermocouple generates a small
amount of electricity. If the pilot flame
goes out, the gas valve automatically
shuts off all gas.
External Shut Off Valve
This valve is placed on the gas line
to shut off gas to the appliance
during maintenance procedures.