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112471-01B
16
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 all
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 18).
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 equipment
shutoff valve for natural gas or propane/LP
supply to equipment shutoff valve for propane/
LP (see Figure 19). Apply noncorrosive leak
detection fluid to all joints. Bubbles forming
show a leak.
4. Correct all leaks at once.
PRESSURE TESTING HEATER GAS
CONNECTIONS
1. Open equipment shutoff valve (see Figure 18).
2. Open main gas valve located on or near gas
meter for natural gas or open propane/LP
supply tank valve.
3. Make sure control knob of heater is in the OFF
position.
4. Check all joints from equipment shutoff valve
to control valve (Manually-Controlled Mod
-
els), or to gas control (Remote-Ready Models)
(see Figures 19 and 20). Apply noncorrosive
leak detection fluid to all joints. Bubbles form
-
ing show a leak.
5. Correct all leaks at once.
6. Light heater (see
Operating Heater
, pages 18).
Check all other internal joints for leaks.
7. Turn off heater (see
To Turn Off Gas to Appli-
ance
, page 19 for Manually-Controlled Mod
-
els, or page 21 for Remote-Ready Models).
INSTALLATION
Continued
Figure 18 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
Figure 19 - Checking Gas Joints
(Propane/LP only)
Thermostat Gas
Valve or Control
Valve Location
Propane/LP
Supply Tank
Equipment
Shutoff Valve
Equipment
Shutoff Valve
Thermostat Gas
Valve or Control
Valve Location
Gas Meter
Figure 20 - Checking Gas Joints
(Natural Gas Only)
