OPERATING YOUR HEATER
NON-THERMOSTAT MODEL
ML300HGA
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
A.This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly.
B.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.
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance. Do not touch any electric switch, do not use any phone in your building.
Immediately call your gas supplier from a neighbor’s phone . Follow the gas supplier’s instructions.
if you cannot reach your gas
supplier, call the fire department.
C.Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, don’t try to repair it , call a qualified service technician or gas supplier. Force or attempted repair may result in a fire or explosion.
D.Do not use this appliance if any part has been under water. Immediately call a qualified service
t e c h n i c i a n t o i n s p e c t t h e appliance and to replace any part of the control system and any gas control which has been under water.
LIGHTING
INSTRUCTIONS
1. STOP! Read the safety information on the side of heater.
2.Check that gas supply to heater is on.
3.Push in control knob slightly
and turn clockwise 
to the OFF position.(see Figure 19)
NOTE: Knob cannot be turned from "PILOT " to "OFF" unless
knob is pushed in slightly. Do not force.
4.Wait five minutes to clear out any gas. Then smell for gas, in-
cluding near the floor. If you smell gas.STOP! Follow "B" in the
safety information on the side of heater. If you don’t smell gas. go to the next step.
5.Push in and turn control knob
counterclockwise 
to PILOT position. Press in control knob
for five(5) seconds.
Note: You may be running this heater for the first time after hooking up to gas supply. If so, you may need to press in control knob for 30 seconds. This will allow air to bleed from the gas system.
Figure 19 - Control Knob In The OFF Position
Figure 20 - Pilot
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.
7.Keep control knob depressed for ten (10) seconds after lighting pilot. If pilot goes out, repeat steps 5,6 and 7.
8.To select the desired heating level, partially press down the control knob slightly and rotate
counterclockwise 
. Release the downward pressure on the knob while continuing to turn until the knob locks at the desired setting position. Do not operate between locked positions.
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 )
Slightly press in control turn
control knob clockwise | to the |
PILOT 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.
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