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WARNING: Test all gas piping
and connections, internal and
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.
PRESSURE TESTING GAS SUPPLY PIPING SYSTEM
1. Disconnect heater with its appliance main
gas valve (control valve) and equipment
shutoff valve from gas supply piping sys-
tem. Pressures in excess of 1/2 PSIG will
damage heater regulator.
2. Cap off open end of gas pipe where equip-
ment 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
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Fig-
ure 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 gas meter to equip-
ment shutoff valve for natural gas or
propane/LP supply to equipment shutoff
valve for propane/LP (see Figure 16 or
17). Apply a noncorrosive leak detection
fluid to all joints. Bubbles forming show a
leak.
4. Correct all leaks at once.
Equipment
Shutoff Valve
Figure 15 - Equipment Shutoff Valve
16
INSTALLATION
CHECKING GAS CONNECTIONS
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
Open
Closed
www.usaprocom.com
WARNING: Never use an open
flame to check for a leak. Apply
a noncorrosive leak detection
fluid to all joints. If bubbles form,
there is a leak. Correct all leaks
at once.
valve located on or near gas meter for
natural gas or using compressed air.
4. Check all joints of gas supply piping sys-
tem. Apply noncorrosive leak detection
fluid to all joints. If bubbles form, there
may be a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff
valve to gas supply. Check reconnected
fittings for leaks.
Propane/LP
Equipment
Supply Tank
Shutoff Valve
External Regulator
Figure 16 - Checking Gas Joints for
Propane/LP Gas
Gas Meter
Equipment Shutoff Valve
Figure 17 - Checking Gas Joints for
Natural Gas
Control Valve
Location
Control Valve
Location
200133-01A
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