Operating Your Heater - Mr. Heater MHVFBF20NGBT Operating Instructions And Owner's Manual

Pressure Testing Heater Gas Connections:
1. Make sure that the heater supply piping system
is connected and has been leak tested as
described above.
2. Make sure control knob of heater is in OFF
position.
3. Open equipment shutoff valve (see 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, pages
10 and 11) Check the rest of the internal joints
for leaks.
8. Turn off heater (see To Turn OFF Gas to
Appliance, page 11)
9. Replace lower front panel.
Equipment
Shutoff Valve
Figure 13
To gas meter
Figure 14
Unvented Natural Gas Vent Free Room Heaters
Open
Closed
Control Valve
Equipment
Shutoff Valve
ELECTRICAL WIRING DIAGRAM:
If any original wiring as supplied with the heater must
be replaced, it must be replaced with type AWG 105
wire 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 which must be lighted
by pushing the ignitor button. 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 your 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.
10 Installation Instructions and Owner's Manual
Caution: Label all wires prior
to disconnection
when servicing
controls. Wiring
errors can
cause improper
and dangerous
operation. Verify
proper operation
after servicing.
Figure 15
C
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