CSA Design- Certified Equipment Shutoff Valve With 1/8" NPT Tap*

INSTALLATION

Continued

WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.

We recommend that you install a sediment trap in supply line as shown in Figure 7. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture 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.

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

Propane/LP

From External Regulator (11" W.C.** to 14" W.C. Pressure)

Natural

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

CHECKING GAS CONNECTIONS

WARNING: Test all gas pip- ing and connections, internal and external or unit, 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 noncorrosive leak de- tection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: Make sure exter- nal regulator has been installed between propane/LP supply and heater. See guidelines under Connecting to Gas Supply, pages 9 and 10.

Pressure Testing Gas Supply Piping System

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

1. Disconnect heater with its appliance main gas

valve (control valve) and equipment shutoff

valve from gas supply piping system. Pres-

sures in excess of 1/2 psig will damage heater

Sediment Trap

Tee

Joint

Pipe

Nipple

Cap

3"

Min

Approved

Gas

Flexible Gas

Regulator

Hose (if allowed of Heater by local codes)

 

regulator.

2.

Cap off open end of gas pipe where equip-

 

ment shutoff valve was connected.

3.

Pressurize supply piping system by either

 

opening propane/LP supply tank valve for

 

propane/LP gas, opening main gas valve lo-

 

cated on or near gas meter for natural gas, or

 

using compressed air.

Figure 7 - Gas Connection

*Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 26.

**Minimum inlet pressure for purpose of input adjustment.

4.

Check all joints of gas supply piping system.

 

Apply noncorrosive leak detection fluid to gas

 

joints. Bubbles forming show a leak.

5.

Correct all leaks at once.

6.

Reconnect heater and equipment shutoff

 

valve to gas supply. Check reconnected fit-

 

tings for leaks.

Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)

1.Close equipment shutoff valve (see Figure 8, page 11).

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Desa Tech S26NTA, S26PTA Checking GAS Connections, Propane/LP, Natural, Pressure Testing Gas Supply Piping System

S26NTA, S26PTA specifications

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