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 14. Locate sedi- ment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment trap where trapped mat- ter 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.

CHECKING GAS CONNECTIONS

WARNING: Test all gas pip- ing and connections, internal and external to 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.SeeguidelinesunderCon- necting to Gas Supply, page 13.

CSA Design-

PROPANE/LP

Certified Equipment

From External

Shutoff Valve With

Regulator (11"

1/8" NPT Tap*

W.C.** to 14" W.C.

 

Pressure)

Approved

NATURAL

From Gas Meter

Flexible Gas

(5" W.C.** to

Hose (if

 

10.5" W.C.

allowed by

 

 

Pressure)

local codes)

 

 

3" Minimum

 

 

Cap

Pipe Tee

 

 

Nipple Joint

PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

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

1.Disconnect appliance with its appliance main gas valve (control valve) and equipment 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 equip- ment shutoff valve was connected.

3.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve lo- cated on or near gas meter for natural gas, or using compressed air.

Gas

Sediment Trap

Control

 

Figure 14 - Gas Connection

*Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 34.

**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 fittings for leaks.

14

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Image 14
Desa Tech CCL3930PRA, CCL3018NR installation manual Checking GAS Connections, Test Pressures In Excess Of 1/2 Psig 3.5 kPa

CCL3018NR, CCL3018PR, CCL3018NRA, CCL3018PRA, CCL3924NR, CCL3924PR, CCL3924NRA, CCL3924PRA, CHL3924NR, CHL3924PR, CCL3930NR, CCL3930PR, CCL3930NRA, CCL3930PRA, CCL3018NR, CCL3930PRA specifications

Desa Tech has established a reputation for engineering high-performance heating solutions, and its range of products, including models such as CCL3018NR, CCL3930PRA, CCL3018NR, CCL3018PR, CCL3018NRA, CCL3018PRA, CCL3924NR, CCL3924PR, CCL3924NRA, CCL3924PRA, CHL3924NR, CHL3924PR, CCL3930NR, CCL3930PR, CCL3930NRA, and CCL3930PRA, exemplifies this commitment to quality and innovation.

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