INSTALLING

Continued

CAUTION

WARNING ICON

G 001

Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings.

 

A.G.A. Design-Certified

 

Manual Shutoff Valve

From

With 1/8" NPT Tap*

Gas Meter

 

(5" W.C.** to

 

10.5" W.C.

 

Pressure)

 

Tee Joint

 

Pipe

3" Minimum

Nipple

Cap

 

Sediment

Figure 18 - Gas Connection

Trap

 

Approved Flexible Gas Hose (if allowed by local codes)

Gas

Regulator

16

*Purchase the optional A.G.A. design-certified manual shutoff valve from your dealer. See Accessory, page 30.

**Minimum inlet pressure for purpose of input adjustment.

CHECKING GAS CONNECTIONS

WARNING

WARNING ICON

G 001

Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at once.

WARNING

WARNING ICON

G 001

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 at once.

Pressure Testing Gas Supply Piping System

Test Pressures In Excess Of 1/2 PSIG

1.Disconnect heater and its individual manual 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 manual shutoff valve was connected.

3.Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.

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 at once.

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

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Desa SVYD18N installation manual Checking GAS Connections, Gas Connection