2020
LIGHTING INSTRUCTIONS
MD100HBA & MD200HBA & MD300HBA & MD200HBA-BB & MD300HBA-BB
1. STOP! Read the safety 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.
4. Wait ve (5) minutes to clear out any air. Then smell for gas, including near the oor.
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 ve (5) seconds
NOTE: The rst time that the heater is operated after connecting the gas supply , 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.
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. Set control knob to desired heating position.
NOTE: Both HIGH and LOW are locked positions. You must press in control knob before turning it from these
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)
Turn control knob clockwise to the PILOT/IGN position.
MANUAL LIGHTING
PROCEDURE
1. Remove lower front panel.
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.
Figure 20 - Control Knob in the
OFF Position
