Operating Your Heater - Mr. Heater MHVFRD20NGT Operating Instructions And Owner's Manual

Equipment
Shutoff Valve
Figure 13
4. Open main gas valve on or near gas meter.
5. Check all joints from equipment shutoff valve to control
valve (see figure 14). Apply mixture of liquid soap and
water to gas joints. Bubbles forming show a leak.
6. Correct all leaks at once.
7. Light heater (see Operating Your Heater, page 10).
To gas meter
Figure 14
8. Turn off heater (see To Turn OFF Gas to Appliance, page
1 1).
9. Replace lower front panel.
ELECTRICAL WIRING DIAGRAM:
MOTOR
W
W
G
LINE
CORD
Figure 15
Unvented Natural Gas Vent Free Room Heaters
Open
Closed
Control Valve
Equipment
Shutoff Valve
BK
SWITCH,
TEMP
BK OPERATION
SWITCH,
DOUBLE THROW
BK
BK
CAUTION:
Label all wires prior to
disconnection when
servicing controls.
Wiring errors can
cause improper and
dangerous operation.
Verify proper operation
after servicing.
If any original wiring as supplied with the heater must be
replaced, it must be replaced with type AWG 105
or its equivalent except as indicated. WARNING: Electrical
Grounding Instructions: This heater is equipped with a
three-prong (grounding) plug for your protection against
shock hazard and should be plugged into a properly
grounded three prong receptacle.

OPERATING YOUR HEATER

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 that 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
• Shut off gas supply.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call you gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
• If you can not 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 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
underwater. Immediately call a qualified service
technician to inspect the appliance and to replace any
part of the control system which has been under water.
LIGHTING INSTRUCTIONS
1. STOP! Read the all safety information included with and
on the side of heater.
2. Check that gas supply to heater is on.
3. Push in gas control knob and slightly turn clockwise
OFF position (see figure 16).
Note: Knob cannot be turned from PILOT to OFF unless
knob is pushed in slightly. Do not force.
Ignitor Button
Control Knob
10
Installation Instructions and Owner's Manual
o C wire
Figure 16
to the