9
IMPORTANT : Install equipment shutoff
valve in an accessible location. The
equipment shutoff valve is for turning
on or shutting off the gas to the appli -
ance. 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 valves.
We recommend that you install a sedi -
ment trap in supply line as shown in Fig -
ure 7. Locate sediment trap where it is
within reach for cleaning. Install in piping
system between fuel supply and heater.
Locate sediment trap where trapped
matter is not likely to freeze. A sediment
trap traps moisture and contaminants.
This keeps them from going into heater
controls. If sediment trap is not installed
or is installed incorrectly, heater may not
run properly.
CHECKING GAS
CONNECTIONS
Figure 8 - Equipment Shutoff Valve
Pressure Testing Gas Sup
-
ply Piping System
Test Pressures In Excess Of 1/2
PSIG(3.5kPa)
1. Disconnect heater 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 con -
nected.
3. Pressurize supply piping system by
either using compressed air or open -
ing gas supply valve.
4. Check all joints of gas supply piping
system. Apply mixture of liquid soap
and water to gas joints. Bubbles form -
ing indicates 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 kPa)
1. Close equipment shutoff valve (see
Figure 8).
2. Pressurize supply piping system by
either using compressed air or open -
ing natural supply tank valve.
3. Check all joints from gas meter to
equipment shutoff valve (see Figure
9). Apply mixture of liquid soap and
indicates to gas joints. Bubbles form -
ing show a leak.
4. Correct all leaks at once.
Pressure Testing Heater
Gas Connections
1. Open equipment shutoff valve (see
Figure 8).
2. Open gas supply tank valve.
3. Make sure control knob of heater is
in the OFF position.
4. Check all joints from equipment shut -
off valve to control valve (see Figure
9). Apply mixture of liquid soap and
water to gas joints. Bubbles forming
show a leak.
CAUTION: Make sure external
regulator has been installed between
gas supply and heater. See guidelines
under Connecting to Gas Supply.
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.
WARNING: Test all gas pip -
ing and connections for leaks after
installing or servicing. Correct all
leaks at once.
Figure 7 - Gas Connection
* Purchase the optional CSA design-
certified equipment shutoff valve from
your dealer.
In the State of Massachusetts
the gas cock must be a T handle
type. The State of Massachusetts
requires that a flexible appliance
connector cannot exceed three feet
in length.
Installation must include an equipment
shutoff valve, union, and plugged 1/8”
NPT tap. Locate NPT tap within reach
for test gauge hook up. NPT tap must be
upstream from heater (see Figure 7).
Figure 6 - External Regulator With
Vent Pointing Down
NG Models:
5”-10.5” W.C. supply pressure
LP Models:
11”-14” W.C. supply pressure
Gas supplier provides external
regulator for propane gas.
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