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Figure 14 -Equipment Shutoff Valve
INSTALLATION
CHECKING GAS
CONNECTIONS
WARNING: Test all gas
piping and connections for leaks after
installing or servicing. Correct all
leaks at once.
WARNING: Never use an open
flame to check for a leak. Apply a
mixture of liquid soap and water
to all joints. Bubbles forming
show a leak. Correct all leaks at
once.
Pressure Testing Gas Supply
Piping System
Test Pressures In Excess Of
1/2 PSIG (3.5 K Pa)
1. Disconnect appliance with its
appliance main gas valve
(control valve) and equipment
shutoff valve from gas supply
piping system. Pressures in
excess of 1/2 psig will damage
heater regulator.
2. Cap off open end of gas pipe
where equipment shutoff valve
was connected.
3. Pressurize supply piping
s y s t e m b y e i t h e r u s i n g
compressed air or opening
main gas valve located on or
near gas meter.
4. Check all joints of gas supply
piping system. Apply mixture of
liquid soap and water to gas
joints. Bubbles forming show
a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment
shutoff valve to gas supply. Check
reconnected fittings for leaks.
Test Pressures Equal To or
Less Than 1/2 PSIG (3.5 K Pa)
1. Close equipment shutoff valve
(see Figure 14).
2. Pressurize supply piping system
by either using compressed air
or opening main gas valve
located on or near gas meter.
3. Check all joints from gas meter to
equipment shutoff valve (see
Figure 15). Apply mixture of
liquid soap and water to gas
joints. Bubbles forming show
a leak.
4. Correct all leaks at once.
Pressure Testing Heater Gas
Connections
1. Open equipment shutoff valve
(see Figure 14).
2. Open main gas valve located on
or near gas meter.
3. Make sure control knob of
heater is in the OFF position.
4. Check all joints from equipment
shutoff valve to control valve
(see Figure 15 ). Apply mixture of
liquid soap and water to gas
joints. Bubbles forming show
a leak.
5. Correct all leaks at once.
6. Light heater (see Operating
Heater, pages 11 for thermostat
m o d e l o r p a g e 1 2 f o r
non-thermostat model). Check
the rest of the internal joints for
leaks.
7. Turn off heater (see To Turn Off
Gas To Appliance, page 11 for
thermostat model or page 12
for non-thermostat model).
8. Replace lower front panel.
THERMOSTAT MODEL
MN300TGA
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not
f o l l o w t h e s e i n s t r u c t i o n s
exactly, a fire or explosion may
r e s u l t c a u s i n g p r o p e r t y
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
p a r t h a s b e e n u n d e r w a t e r .
Immediately call a qualified
service technician to inspect
the appliance and to replace
any part of the control system
and any gas control which has
been under water.
Figure 15 -Checking Gas Joints
OPERATING YOUR HEATER
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