Use and Care Guide

9
Installation Instructions and Owner’s Manual
Unvented Natural Gas Vent Free Room Heaters
CAUTION: Never connect heater to private (non-utility)
gas well. This gas is commonly known as well-head
gas.
IMPORTANT: Check your gas line pressure before
connecting heater to gas line. Gas line pressure must
be no greater than 14 inches of water. If gas line
pressure is higher, heater regulator damage could
occur.
CAUTION: Use only new black iron or steel pipe. Internally-
tinned copper tubing may be used in certain areas. Check
your local codes. Use pipe of large enough diameter to
allow proper gas volume to heater. If pipe is too small,
undue loss of pressure will occur.
Installation must include an equipment shutoff valve, union
and plugged 1/8” NPT tap. Locate NPT tap within reach of
test gauge hookup. NPT tap must be upstream from heater
(see figure 12).
*A CSA/AGA certified equipment shutoff valve with
1/8” NPT tap is an acceptable alternative to test gauge
connection. Purchase the CSA/AGA certified equipment
shutoff valve from your dealer.
IMPORTANT: Install an equipment shutoff valve in an
accessible location. The equipment shutoff valve is for
turning on or shutting off the gas to the appliance.
Apply pipe joint sealant lightly to male threads. This will
prevent excess sealant from going into pipe. Excess sealant
in pipe could result in clogged heater fuel train.
CAUTION: Use pipe joint sealant that is resistant to
Natural Gas.
Install sediment trap in supply line as shown in figure 12.
Locate sediment trap where it is within reach for cleaning.
A sediment trap traps moisture and contaminants. This
keeps them from going into heater. If sediment trap is
not installed or is installed improperly, heater may not run
correctly.
IMPORTANT: Hold pressure regulator with wrench when
connecting it to gas piping and/or fittings.
Nipple
Tee Joint
Cap
Shutoff Valve
HEATER CABINET
Nipple
Nipple
Tee Joint
Ground Joint Union
3/8” NPT Pipe Nipple
Pressure
Regulator
Test Gauge
Connection
1/8” NPT Plug Tap
Reducer Bushing
to 1/8” NPT
Nipple
Sediment
Trap
3” minimum
Fuel line from
Gas Meter
(7”W.C to 14” WC Pressure)
Figure 12
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
gas 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
High Pressure
Test pressure in Excess of ½ psig (3.5kPa)
1. The appliance and its appliance main gas valve must be
disconnected from the gas supply piping system during
any pressure testing of that system at test pressures in
excess of ½ psi (3.5 kPa)..
2. Cap off open end of gas pipe where equipment shutoff
valve was connected.
3. Pressurize supply piping system by either using
compressed air or opening main gas valve on or near
gas meter.
4. Check all connections and joints in 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. Depressurize and relieve pressure in supply piping
system.
7. Reconnect heater and equipment shutoff valve to gas
supply.
8. Reconnected fittings must be checked for leaks in next
section.
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).