CHECKING GAS CONNECTIONS

INSTALLATION

Continued

WARNING: Test all gas piping and connections for leaks after install- ing or servicing. Correct all leaks at once.

Pressure Testing Gas Supply

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 connected.

3.Pressurize supply piping system by either using compressed air or opening propane/LP supply valve.

4.Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.

5.Correct all leaks immediately.

6.Reconnect heater and equipment shutoff valve to gas supply. Check reconnected fittings for leaks.

Figure 8 -Equipment Shutoff Valve

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 immediately.

Pressure Testing Heater Gas Connections

1.Open equipment shutoff valve (see Figure 8).

2.Open gas supply valve.

3.Make sure control knob of heater is in the OFF position.

4.Check all joints from equipment shutoff valve to control valve (see Figure 9).

Apply mixture of liquid soap and water to gas joints. Bubbles form- ing show a leak.

5.Correct all leaks immediately.

6. Light heater (see Operating Heater, page 9 ). Check all other internal joints for leaks.

7.Turn off heater (see To Turn Off Gas to Appliance, page 9 ).

CAUTION: Make sure external regulator has been installed between natural gas supply and heater. See guidelines under Connecting to Gas Supply, page 7.

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 opening gas supply tank valve.

3.Check all joints from gas meter to equipment shutoff valve (see Fig- ure 9). Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.

4.Correct all leaks immediately.

Figure 9 -Checking Gas Joints

8

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Procom SL250TYLA-D, SN250TYLA-D installation manual Checking GAS Connections, Pressure Testing Heater Gas Connections
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SL250TYLA-D, SN250TYLA-D specifications

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