Roubleshooting, Ontinued, How this heater works – Avalon Firestyles B-Vent-1995 User Manual
Page 33: What turns the main burners on and off, What prevents gas buildup
T
ROUBLESHOOTING
(C
ONTINUED
)
P
AGE
33
How this Heater Works
!
This heater is designed with safety as the primary concern. Many of the internal components are for
safety purposes. Therefore, only certified gas service technicians should service this heater.
What Turns the Main Burners On and Off
This heater uses a millivolt system to control its operation (a millivolt is a very small amount of
electricity). The thermopile generates 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 thermopile
to heat up and generate enough electricity. The thermopile also 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 heater on and off, this heater 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.
O
O
O
ON
N
N
N
O
O
O
OF
F
F
FF
F
F
F
MMMM
AAAA
IIIINNNN
BBBB
UUUU
RRRR
NNNN
EEEE
RRRR
PILOT ADJ
VENT
T
O
L
PI
ON
OFF
HI
LO
What Prevents Gas Buildup
+
Your heater utilizes a high-technology gas valve to prevent gas buildup. It also has a pilot flame
inside the firebox, which is a proven method for preventing gas buildup.
+
While the main burner is off the thermopile (next to the pilot) senses when the pilot flame is lit. If
the pilot flame goes out, this thermopile 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.
+
While the main burner is on the pilot flame insures all gas ignites inside the firebox.
Ceramic Glass
The glass in your heater is the most
durable glass available. It has been
tested to be extremely resistant to
breakage and temperature changes.
Gas Valve
This high-technology valve automatically
shuts off all gas if it does not receive a signal
from the thermopile. If any component is
damged 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.
Thermopile
The thermopile 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 heater
during maintenance procedures.
PILOT ADJ
VENT
T
O
L
P
I
ON
OFF
HI
LO