9
Operating Instructions and Owner’s Manual
Mr. Heater | Unvented Natural Gas Fired Room Heater
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
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.
OPERATION
Low Pressure
Test Pressure Equal To or Less Than ½
psig (3.5 kPa)
1. The appliance must be isolated from
the gas supply piping system by
closing its equipment shutoff valve
during any pressure testing of the gas
supply piping system at test pressures
equal to or less than ½ psi (3.5 kPa).
See Figure 13.
2. Pressurize supply piping system
by either using compressed air or
opening main gas valve on or near gas
meter.
3. Check all joints and joints in gas supply
piping system. See Figure 14. Apply
mixture of liquid soap and water to
gas joints. Bubbles forming show a
leak.
4. Correct all leaks at once.
5. Depressurize and relieve pressure from
supply piping system.
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.
8. Turn off heater. See To Turn OFF Gas
to Appliance.
9. Replace lower front panel.
Figure 13
Figure 14
Figure 15
Equipment
Shutoff
Valve
Open
Closed
To gas meter
Control Valve
Equipment Shutoff Valve
W
W
BK
BK
BK
BK
G
SWITCH,
DOUBLE THROW
SWITCH,
TEMP
OPERATION
MOTOR
LINE
CORD
CAUTION:
Label all wires prior to
disconnection when
servicing controls.
Wiring errors can
cause improper and
dangerous operation.
Verify proper operation
after servicing.
Electrical Wiring Diagram
If any original wiring as supplied with
the heater must be replaced, it must be
replaced with type AWG 105
º
C wire or
its equivalent except as indicated. Refer
to Figure 15.
OPERATING YOUR HEATER
For Your Safety Read Before
Lighting
A. This appliance has a pilot that must be
lit 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.
