Desa CGCF10NR, CGCF10PR, EFS10RNA, EFS10RPA, VMH10RPC, VMH10RNC installation manual Propane/LP

INSTALLATION

Continued

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 regu- lator damage could occur.

CAUTION:Neverconnectpro- pane/LP fireplace directly to the propane/LPsupply.Thisfireplace requiresanexternalregulator(not supplied).Installtheexternalregu- lator between the fireplace and propane/LP supply.

For propane/LP units, the installer must supply an external regulator. The external regulator will re- duce incoming gas pressure. You must reduce in- coming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pres- sure, fireplace regulator damage could occur. In- stall external regulator with the vent pointing down as shown in Figure 21. Pointing the vent down protects it from freezing rain or sleet.

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" or greater diame- ter to allow proper gas volume to fireplace. 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 Figures 22). 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 require- ments for locating equipment shutoff valve to fire- places.

Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from go- ing 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.

We recommend that you install a sediment trap in supply line as shown in Figure 22, page 18. Lo- cate sediment trap where it is within reach for cleaning. Install in piping system between fuel sup- ply 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 fireplace controls. If sediment trap is not installed or is installed wrong, fireplace may not run properly.

External Regulator

Propane/LP

Supply Tank

Vent Pointing Down

Figure 21 - External Regulator With Vent

Pointing Down

CSA Design-
Certified Equipment
Shutoff Valve With
1/8" NPT Tap*	Propane/LP
	From External
	Regulator (11"
	W.C.** to 14"
	W.C. Pressure)
Approved	NATURAL
Flexible Gas
	From Gas Meter
Line
	(5" W.C.** to
	10.5" W.C.
3" Minimum	Pressure)

Pipe Nipple Cap Tee Joint

Sediment Trap

Figure 22 - Gas Connection

*Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Ac- cessories, page 40.

18 www.desatech.com 112462-01C