INSTALLATION

Continued

CONNECTING TO GAS SUPPLY

WARNING: This appliance requires a 45° male flare fitting 5/8"-18 UNF (Unified National Fine Thread) inlet connection and the flexible gas line provided.

WARNING: A qualified service person must connect fireplace to gas supply. Follow all local codes.

WARNING:Neverconnectnatu- ralgasfireplacetoprivate(non-util- ity)gaswells.Thisgasiscommonly known as wellhead gas.

IMPORTANT: For natural gas, check gas line pressure before connecting fireplace 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.

CAUTION:Neverconnectpro- pane/LP fireplace directly to the propane/LPsupply.Thisfireplace requires an external regulator (notsupplied).Installtheexternal regulator between the fireplace and propane/LP supply.

For propane/LP units, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pressure, fireplace regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 22. Pointing the vent down protects it from freezing rain or sleet.

CAUTION:Useonlynew,black ironorsteelpipe.Internally-tinned copper tubing may be used in cer- tainareas.Checkyourlocalcodes. Usepipeof1/2"orgreaterdiameter to allow proper gas volume to fire- place. If pipe is too small, undue loss of volume 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 heater (see Figure 23).

IMPORTANT: Install equipment shutoff valve in an accessible location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.

Check your building codes for any special re- quirements for locating equipment shutoff valve to fireplaces.

Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged fireplace valves.

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

Propane/LP

 

 

Supply

 

External

Tank

 

 

Regulator

 

 

 

 

 

Vent

 

 

 

Pointing

 

 

 

Down

Figure 22 - External Regulator With Vent

 

Pointing Down

 

 

CSA Design-Certified

 

Equipment Shutoff Valve

 

With 1/8" NPT Tap*

Approved

 

PROPANE/LP

 

From External

Flexible

 

 

Regulator (11"

Gas Line

 

 

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

 

 

 

 

Pressure)

 

 

NATURAL

 

 

From Gas Meter

3" Minimum

(5"

W.C.** to

 

10.5" W.C.

 

 

 

 

 

 

Pressure)

Pipe Nipple Cap Tee Joint

 

Sediment Trap

 

 

Figure 23 - Gas Connection

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

Accessories, page 44.

16

www.desatech.com

111244-01F

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Desa CDCFPR, CDCFTNA, CDCFTPA installation manual Connecting to GAS Supply

CDCFTNA, CDCFPR, CDCFTPA specifications

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