Checking gas connections, Connecting to gas supply, Warning – Desa CGN10 User Manual

Page 14

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14

099404

IMPORTANT:

Hold pressure regulator with wrench when connecting it to gas piping

and/or fittings.

* An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Purchase the optional A.G.A. design-certified
manual shutoff valve from your dealer. See Accessory, page 25.

Tee

Joint

Pipe

Nipple

Cap

Pressure
Regulator

Heater
Cabinet

Tee Joint

Reducer
Bushing to
1/8" NPT

1/8" NPT
Plug Tap

Test

Gauge

Connection *

Ground Joint Union

3/8" NPT
Pipe Nipple

Figure 12 - Gas Connection

CHECKING

GAS

CONNECTIONS

Sediment Trap

WARNING ICON

G 001

WARNING

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

3" Minimum

Manual Shutoff Valve *

From Gas Meter

(4" W.C. to

10.5" W.C. Pressure)

CONNECTING

TO GAS

SUPPLY

Continued

WARNING ICON

G 001

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 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.

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