Lopi 864TRV owner manual 22Maintenance, How this Fireplace Works

22Maintenance

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	This electricity is
generates electricity (a very small	used to operate the
amount measured in "Millivolts").	main burners.

The main burners
are switched on and
off using the
electricity generated
by the thermopile.
The ON/OFF switch,
remote control, or	BURNER	ON
thermostat control
the circuit to the main
burner.	MAIN
		OFF

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.

Pilot Flame

The pilot flame is a time-proven component that eliminates the possibility of gas buildup inside 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.

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.

© Travis Industries 4050812 100-01168_001