Thermostat Control Lighting Instructions - Monessen Hearth DLX18 Installation And Operating Instructions Manual

Unvented gas log heater or vented decorative appliance
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OPERATING INSTRUCTIONS

THERMOSTAT CONTROL LIGHTING INSTRUCTIONS

1.
STOP! Read the safety information .
2.
Make sure the manual shutoff valve is fully open.
3.
This heater is equipped with an ignition device (piezo) which automatically lights the pilot.
4.
See Figure 28, page 26 for the location of the piezo ignitor and control knob. Turn control knob clockwise
to the OFF position.
5.
Wait 5 minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP!
Follow safety instructions under
next step.
6.
Turn the gas control knob counterclockwise
hold control knob for 5 seconds.
7.
With the control knob pushed in and held, push and release the piezo ignitor button to light the ODS
pilot. The pilot is located on the right side of the heater, behind the front log and in front of the main
burner. If piezo ignitor does not light the pilot,
8.
Hold the control knob in for an additional 10 seconds to prevent the ODS pilot from shutting off the gas
while the thermocouple is warming up.
9.
Release the control knob.
If the knob does not pop out when released, stop and immediately call your service technician or gas
supplier.
If the ODS pilot will not stay lit after several tries, push and turn the control knob clockwise
to OFF. Release and wait 15 seconds. Repeat steps 6 through 9.
10. Turn control knob to any position between LOW and HIGH. The knob position controls the thermostat
temperature. See Figure 32.
11. The heater is now in proper operation. The following procedure should be used to achieve thermostatic
control of the desired room temperature.
Figure 32 - Rotation of Control Knob
1. Turn control knob clockwise
2. If applicable: Turn off all electric power to the heater.
28
What to Do if you Smell Gas, page 26.
a. Operate unit at higher setting until desired room temperature
b. At the desired temperature, slowly turn the knob clockwise
c. Thermostat is now set to maintain the current room tempera-
Rotate
d. As the room temperature decreases, the thermostat valve will
e. When the temperature reaches its set point (knob position),
f. This is the normal cycle of the heater.
TO TURN OFF GAS TO HEATER
to OFF position to completely shut off the heater.
to the IGN position. See Figure 32. Push in and
see Match Lighting Instructions, page 30.
is achieved.
and stop rotating when flame disappears.
ture.
open to ignite the front and rear burner.
the thermostat valve will again shut off the front and rear burner.
If you do not smell gas, go to the
14D9999

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