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Lighting Information And Operation; Before Lighting; Placing Unit Into Operation; Gas Valve Operation - Lennox DR4540-2 User's Information Manual

Merit dt–2 series; merit dr–2 series vented gas fireplace heater direct vent models

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If you do not follow these instructions exactly, a fire
or explosion may result causing property damage,
personal injury or loss of life.
BEFORE LIGHTING smell all around the appliance area
for gas. Be sure to smell next to the floor because some
gas is heavier than air and will settle on the floor.
Use only your hand to turn the gas control knob(s). Never
use tools. If the knob will not turn by hand, do not try to repair
it, call a qualified service technician. Force or attempted re-
pair may result in a fire or explosion.

PLACING UNIT INTO OPERATION

(Millivolt Valves with Piezo Ignitor)
Fireplaces which include a millivolt valve are equipped
with a pilot which must be lit by a Piezo ignitor (red ignitor
button). When lighting the pilot, follow these instructions
exactly.
GAS VALVE OPERATION – Millivolt Valve (Figure 2)
1 – STOP! Read the safety information at the beginning
of this section.
2 – Turn OFF the burner switch (if applicable), or set the
thermostat to the lowest setting (if applicable).
3 – Turn off all electrical power to appliance (if applicable).
4 – Open the control access panel. See figure1.
5 – Push in gas control knob slightly and turn clockwise
to OFF.
NOTE – Knob cannot be turned from PILOT to OFF un-
less knob is pushed in slightly. Do not force.
TO OPEN THE CONTROL ACCESS PANEL
The control access panel becomes hot during
unit operation, and must be opened with care:
Insert the tip of a finger of each hand (with the back of the
hands toward the panel) into the cutout in the bottom of
the panel at the positions shown, and rotate the panel
down.
6 –
7 – Press partially and turn gas valve knob counterclock-
wise
to PILOT.
8 – Push control knob in until it stops and hold knob in this
position.
red Piezo ignitor button. Continue to press control knob
for 25 seconds after the pilot is lit. Release knob. It
should pop back up. Pilot should remain lit. If pilot goes
out, repeat steps 5 through 8.
MILLIVOLT GAS VALVE
HI/LO FLAME
ADJUSTMENT KNOB
GAS VALVE SHOWN IN PILOT POSITION
9 – Press partially and turn gas valve knob counterclock-
wise
to ON.
10 –Restore electrical power to appliance (if applicable)
11 – Turn ON the burner switch (if applicable), or set the
thermostat to the desired setting (if applicable).
12 –Close the control access panel.
NOTE – If gas valve is turned to OFF from ON or PILOT
while appliance is in operation, gas valve will latch in OFF
position for 25 seconds.
Page 3
light the pilot by pushing the
CONTROL
KNOB

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