Desa EFS33PRB, EFS33NRB, VSGF33PRB, VSGF33NRB Continued, Propane/LP, Gas Connection

INSTALLATION

Continued

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, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 17. Pointing the vent down pro- tects it from freezing rain or sleet.

CAUTION:Useonlynew,black ironorsteelpipe.Internally-tinned copper tubing may be used in cer- tainareas.Checkyourlocalcodes. Usepipeof1/2"diameterorgreater 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 fireplace (see Figure 18).

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. Never use sealant on flare threads.

External	Propane/LP
Regulator	Supply Tank

Vent Pointing Down

Figure 17 - External Regulator on Propane/LP Supply Tank with Vent Pointing Down

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 18. Locate sedi- ment trap where it is within reach for cleaning. Install in piping system between fuel supply and fireplace. 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 fireplace gas controls. If sediment trap is not installed or is installed wrong, fireplace may not run properly.

CSA Design-Certified

Equipment Shutoff Valve

With 1/8" NPT Tap*

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

		Propane/LP
Cap Pipe	Tee	From External
Nipple	Joint	Regulator
		(11" W.C.** to
Sediment Trap		14" W.C.
		Pressure)

Figure 18 - Gas Connection

*Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, pages 32 through 34.

**Minimum inlet pressure for purpose of input adjustment.

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