Procom PCSD25RT - Checking Gas Connections

www.usaprocom.com
200047-01A
14
INSTALLATION
Figure 10 - Equipment Shutoff Valve
CHECKING GAS CONNECTIONS
Open
Closed
Equipment
Shutoff Valve
WARNING: Never use an open
ame to check for a leak. Apply
a noncorrosive leak detection
uid to all joints. If bubbles form,
there is a leak. Correct all leaks
at once.
WARNING: Test all gas piping
and connections for leaks after
installing or servicing. Correct
all leaks at once.
PRESSURE TESTING GAS SUPPLY PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
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
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
uid 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
ttings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Fig-
ure 10).
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 11 or
12). Apply a noncorrosive leak detection
uid to all joints. Bubbles forming show a
leak.
4. Correct all leaks at once.
Control Valve
Location
Control Valve
Location
Equipment
Shutoff Valve
Equipment Shutoff Valve
External Regulator
Propane/LP
Supply Tank
Figure 11 - Checking Gas Joints for
Propane/LP Gas
Figure 12 - Checking Gas Joints for
Natural Gas
Gas Meter