Desa VGC18NR/PR installation manual Dealer. See Accessories, Natural

Installation

Continued

Installation Items Needed

Before installing heater, make sure you have the items listed below.

• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
•	sediment trap
•	tee joint
•	pipe wrench
• approved flexible gas line with gas connector
	(if allowed by local codes) (not provided)

Propane/LP	External
Supply Tank
	Regulator

Vent

Pointing

Down

Figure 13 - External Regulator With Vent

Pointing Down

* A CSA design-certified equipment shutoff valve

with 1/8" NPT tap is an acceptable alternative to

test gauge connection. Purchase the optional CSA

design-certified equipment shutoff valve from your

dealer. See Accessories, page 33.

For propane/LP units, the installer must supply

an external regulator. The external regulator will

reduce incoming gas pressure. You must reduce

CSA Design-Certified

Equipment Shutoff Valve

With 1/8" NPT Tap*

Approved Flexible Gas Hose (if allowed by local codes)

Propane/LP From External Regulator (11" W.C.** to 14" W.C. Pressure)

incoming gas pressure to between 11" and 14" 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 13. Pointing the vent down

protects it from freezing rain or sleet.

CAUTION: Use only new, black iron or steel pipe. In- ternally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of 1/2" diameter or greater to allow proper gas volume to heater. 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 14).

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.

	3" Minimum		Natural
			From Gas
			Meter
	Pipe	Cap Tee	(5" W.C.**
	Nipple	Joint	to 10.5"
Gas	Sediment Trap		W.C.
			Pressure)
Control

Figure 14 - Gas Connection (Remote-

Ready Models Only)

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

Accessories, page 33.

**Minimum inlet pressure for purpose of input adjustment.

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 heater valves.

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

14 www.desatech.com 119162-01A