Desa CGN10TA User Manual download pdf (Page 9)

104267

OWNER’S MANUAL

CONNECTING TO GAS

SUPPLY

WARNING: A qualified ser-

vice person must connect heater

to gas supply. Follow all local

codes.

IMPORTANT:

Check gas line pressure be-

fore connecting heater to gas line. Gas line

pressure must be no greater than 14 inches

of water. If gas line pressure is higher,

heater regulator damage could occur.

Installation must include an equipment

shutoff valve, ground joint union, and

plugged 1/8" NPT tap. Locate NPT tap within

reach for test gauge hook up. NPT tap must

be upstream from heater (see Figure 12).

IMPORTANT:

Install an equipment shutoff

valve in an accessible location. The equip-

ment shutoff valve is for turning on or

shutting off the gas to the appliance.

Apply pipe joint sealant lightly to male

threads. This will prevent excess sealant

from going into pipe. Excess sealant in pipe

could result in clogged heater valves.

Install sediment trap (trap) in supply line as

shown in Figure 12. Locate sediment trap

where it is within reach for cleaning. Locate

sediment trap where trapped matter is not

likely to freeze. A sediment trap traps mois-

ture and contaminants. This keeps them

from going into heater controls. If sediment

trap is not installed or is installed wrong,

heater may not run properly.

IMPORTANT:

Hold pressure regulator

with wrench when connecting it to gas pip-

ing and/or fittings.

CAUTION: Use only new,

black iron or steel pipe. Inter-

nally-tinned copper tubing may

be used in certain areas. Check

your local codes. Use pipe 3/8"

diameter or greater to allow

proper gas volume to heater. If

pipe is too small, undue loss of

pressure will occur.

WARNING: Never connect

heater to private (non-utility) gas

wells. This gas is commonly

known as wellhead gas.

Continued

CAUTION: Use pipe joint seal-

ant that is resistant to liquid pe-

troleum (LP) gas.

* An CSA/AGA design-certified equipment shutoff valve with 1/8" NPT tap is an

acceptable alternative to test gauge connection. Purchase the optional CSA/AGA design-

certified equipment shutoff valve from your dealer. See Accessory, page 16.

Tee Joint

Reducer

Bushing to

1/8" NPT

Plug Tap

Test

Gauge

Connection *

Pressure

Regulator

Tee

Joint

Pipe

Nipple

Cap

Sediment

Trap

Heater

Cabinet

3/8" NPT

Pipe Nipple

Ground Joint Union

Equipment

Shutoff

Valve *

From

External

Gas Meter

(5" W.C. to

10.5" W.C.

Pressure)

Figure 12 - Gas Connection

3" Minimum

INSTALLATION

Continued

WARNING: This appliance re-

quires a 3/8" NPT (National Pipe

Thread) inlet connection to the

pressure regulator.

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