ComfortFlame.US.com
900556-00 NC
13
INSTALLATION
Continued
PRESSURE TESTING GAS SUPPLY PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
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 system by either opening propane/LP
supply tank valve for propane/LP gas or opening main gas valve
located on or near gas meter for natural gas or using compressed
air.
4. Check all joints of gas supply piping system. Apply noncorrosive
leak detection fluid 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 kPa)
1. Close equipment shutoff valve
(see
Figure 15
)
.
2. Pressurize supply piping system by either opening propane/LP
supply tank valve for propane/LP gas or opening main gas valve
located on or near gas meter for natural gas or using compressed
air.
3. Check all joints from propane/LP supply tank to equipment shutoff
valve for propane/LP gas
(see
Figure 16
)
or from gas meter to
equipment shutoff valve for natural gas
(see
Figure 17
)
. Apply
noncorrosive leak detection fluid to gas joints. Bubbles forming
show a leak.
4. Correct all leaks at once.
CAUTION: Make sure external regulator has been
installed between propane/LP supply and heater. See
guidelines under
Connecting to Gas Supply
,
page 11.
WARNING: Never use an open flame to check for
a leak. Apply a noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak. Correct all
leaks at once.
WARNING: Test all gas piping and connections,
internal and external to unit, for leaks after installing
or servicing. Correct all leaks at once.
CHECKING GAS CONNECTIONS
Figure 16 - Checking Gas Joints
Equipment Shutoff Valve
Control Valve Location
Figure 17 - Checking Gas Joints
Gas Meter
Equipment Shutoff Valve
Control Valve Location
The appliance and its appliance main gas valve must be discon-
nected from the gas supply piping system during any pressure
testing of that system at test pressures in excess of 1/2 psi (3.5
kPa).
The appliance must be isolated from the gas supply piping sys-
tem by closing its equipment shutoff valve during any pressure
testing of the gas supply piping system at test pressures equal
to or less than 1/2 psi (3.5 kPa).
Figure 15 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff Valve
Propane/LP
Supply Tank
