HearthRite HB20ML-1, Owner'S Operation And Installation Manual

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Figure 17 - Control Knob In The
OFF Position
Figure 18 - Pilot
OPERATING YOUR HEATER
THERMOSTAT MODELS
!
LIGHTING
!
INSTRUCTIONS
1 . S TO P ! R e a d t h e s a f e t y
information on the side of
heater.
2. Check that gas supply to
heater is on.
3. Push in gas control knob
slightly and turn clockwise to the
OFF position.
NOTE: knob cannot be turned from
“PILOT” to “OFF” unless knob is
pushed in slightly. Do not use
force.
4. Wait five (5) minutes to clear
out any air. Then smell for
gas, including near the floor.
If you smell gas, STOP!
Follow “B” in the safety
information on the side of the
heater. If you do not smell
gas, go to the next step.
5. Push in gas control knob
slightly and turn
counterclockwise
to
“PILOT/IGN” and depress for
five(5) seconds
NOTE: You may be running this
heater for the first time after hooking
up to gas supply. If so, the control
knob should be depressed for about
thirty (30) seconds. This will allow
air to bleed from the gas system.
6. With control knob pressed in,
push down and release the
ignitor button. This will light
pilot. If needed, keep pressing
ignitor button until pilot lights.
NOTE: If pilot does not stay lit,
refer to Troubleshooting, pages
14 through 16. Also contact a
qualified service person or gas
supplier for repairs. Until repairs
are made, light pilot with match.
To light pilot with match, see
Manual Lighting Procedure.
7. Keep control knob pressed in
for thirty (30) seconds after
lighting pilot. After 30
seconds, release control knob.
!
If control knob does not pop
up when released, contact a
qualified service person or
gas supplier for repairs.
NOTE: If pilot goes out, repeat
steps 3 through 7. Wait one (1)
minute before lighting pilot again
8. Turn control knob
counterclockwise
to
desired heating Level. The
main burner should light. Set
control knob to any heat level
between HI and LO.
This increases or decreases the
burner flame height. At times the room
may exceed the set temperature. If so,
the burner will shut off. The burner
will cycle back on when room tem-
perature drops below the set
temperature. The control knob can
be set to any heat level between HI
and LO. Selecting the HI setting will
cause the burner to remain fully on
without modulating down in most cases.
NOTE: the thermostat sensing bulb
measures the temperature of air near
the heater cabinet. This may not al-
ways agree with room temperature
(depending on housing construction.
installation location, room size, open
air temperatures, etc.), frequent use
of your heater will let you determine
y o u r o w n c o m f o r t l e v e l s .
!
TO TURN OFF
!
GAS TO APPLIANCE
Shutting Off Heater
1. Turn control knob clockwise
to the OFF position.
2. Turn off all electric power to
the appliance if service is to
be performed.
SHUTTING OFF BURNER ONLY
(PILOT STAYS LIT)
Turn control knob clockwise
to the PILOT/IGN position.
!
MANUAL LIGHTING
!
PROCEDURE
1. Remove lower front panel (see
Figure 7 page 7).
2. Follow steps 1 through 5
under
Lighting Instructions.
3. With control knob pressed in,
strike match. Hold match to
pilot until pilot lights.
4. Keep control knob pressed in
for 30 seconds after lighting
pilot. After 30 seconds, release
control knob. Follow step 8
under
Lighting Instructions.
5. Replace lower front panel.
The thermostatic control used on
these models differs from standard
thermostats. Standard thermostats
simply turn on and off the burner.
The thermostat used on this heater
senses the room temperature. The
thermostat adjusts the amount
of gas flow to the burner.
CAUTION: Do not try to
adjust heating levels by using
the equipment shutoff valve.
!
THERMOSTAT
!
CONTROL OPERATION