Desa Tech PC3460NG, PC4670NG Installation, Connecting to GAS Supply, Checking GAS Connections

OWNER’S MANUAL

INSTALLATION

(Continued)

CONNECTING TO GAS SUPPLY

Installation Items Needed

Before installing appliance, make sure your installer has the items listed below.

•piping (check local codes)

•sealant (resistant to propane/LP gas) (May be pipe dope or Teflon tape)

•equipment shutoff valve *

•test gauge connection *

•adjustable (crescent) wrench or pliers

•sediment trap

•tee joint

•pipe wrench

•brass fitting(s) (depending upon gas sup- ply plumbing)

*An CSA/AGA design-certified equipment shutoff valve with 1/8" NPT tap is an ac- ceptable alternative to test gauge connec- tion. Purchase the optional CSA/AGA de- sign-certified equipment shutoff valve from your dealer. See Accessory, page 10.

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 of 1/2" diameter or greater to allow proper gas volume to appliance. If pipe is too small, undue loss of pressure will occur.

Installation must include an equipment shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from appliance (see Figure 3).

IMPORTANT: Install equipment shutoff valve in an accessible location. The equip- ment shutoff valve is for turning on and 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 a clogged burner injector.

CAUTION: Use pipe joint seal- ant that is resistant to liquid pe- troleum (LP) gas.

We recommend that you install a sediment trap in supply line as shown in Figure 3. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and patio firepit. Lo- cate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into appliance controls. If sedi- ment trap is not installed or is installed wrong, appliance may not run properly.

CSA/AGA Design-

Certified Equipment

Shutoff Valve With 1/8" NPT Tap*

From Gas

Meter (5" W.C.** to 10.5" W.C. Pressure)

To

Patio Firepit

3" Minimum

Tee Joint Pipe Nipple Cap

Sediment Trap

Figure 3 - Gas Connection

*Purchase the optional CSA/AGA design- certified equipment shutoff valve from your dealer. See Accessory, page 10.

**Minimum inlet pressure for purpose of input adjustment.

CHECKING GAS

CONNECTIONS

WARNING: Test all gas pip- ing and connections for leaks after installing or servicing. Cor- rect all leaks at once.

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 (3.5 kPa)

1.The appliance and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psi (3.5 kPa).

2.Cap off open end of gas pipe where equipment shutoff valve was connected.

3.Pressurize supply piping system by ei- ther 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 form- ing show a leak.

5.Correct all leaks at once.

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

Continued

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