INSTALLATION

Continued

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

 

CSA Design-Certified

From Gas Meter

 

 

Equipment Shutoff Valve

(5" W.C.** to

 

 

With 1/8"

NPT Tap*

10.5" W.C.

 

 

 

 

Pressure)

 

 

Gas

 

 

 

 

 

 

 

 

Regulator

 

 

3" Minimum

 

Tee

Pipe Cap

Approved Flexible

Joint

Nipple

 

 

Gas Hose (if allowed

 

 

 

Sediment Trap

 

by local codes)

 

 

 

 

Figure 14 - Gas Connection

*Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 27.

**Minimum inlet pressure for purpose of input adjustment.

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once.

WARNING: Never use an open flame to check for a leak. Apply a noncorrosive leak detection fluid to all joints. Bubbles form- ing 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 un- der Connecting to Gas Supply, page 13.

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 equipment 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 located on or near gas meter for natural gas or using compressed air.

4.Check all joints of gas supply piping system. Apply noncorrosive leak detection fluid to all 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 15).

2.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.

3.Check all joints from gas meter to equipment shutoff valve for natural gas or propane/LP sup- ply to equipment shutoff valve for propane/LP (see Figures 16 and 17, page 15). Apply noncor- rosive leak detection fluid to all joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Equipment

Open

Shutoff

 

Valve

 

 

Closed

Figure 15

- Equipment Shutoff Valve

14

www.desatech.com

111347-01E

Page 14
Image 14
Desa LSL3124P, CDL3924NT Checking GAS Connections, Test Pressures In Excess Of 1/2 Psig 3.5 kPa, Correct all leaks at once

LSL3124P, CDL3924PT, CDL3924NT specifications

Desa CDL3924NT, LSL3124P, and CDL3924PT are notable choices in the realm of heating appliances, demonstrating advanced engineering and an array of user-friendly features. Each model has unique characteristics, making them suitable for diverse heating needs.

The Desa CDL3924NT is particularly distinguished by its dual-fuel capability, allowing users to switch between natural gas and propane. This flexibility ensures that homeowners can choose the energy source that best suits their preferences and availability. Moreover, the model boasts a heating capacity of up to 39,000 BTUs, providing substantial warmth for large spaces. Its compact design makes it ideal for installations in rooms with limited space, while an aesthetically pleasing finish ensures that it blends seamlessly with various home decors.

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