Installation

Continued

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 15 or 16, depending on your model).

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 heater valves.

 

 

 

CSA Design-Certified

Propane/LP

Equipment Shutoff Valve

From External

With 1/8" NPT Tap*

Regulator

 

 

 

(11" W.C.**

 

Approved Flexible

to 14" W.C.

 

Gas Hose (if

Pressure)

 

allowed by local

 

 

 

 

codes)

 

Natural

 

 

 

From Gas

 

3" Minimum

 

Meter

 

 

 

 

 

(5" W.C.**

 

 

Gas

to 10.5"

 

Tee Cap Pipe

 

Regulator

W.C.

Joint

Nipple

 

 

 

 

 

 

Pressure)

Sediment Trap

 

Figure 15 - Gas Connection

(Thermostatically-Controlled Models Only)

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 Figures 15 or 16, depend- ing on your model. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment

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)

trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.

CAUTION: Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings (Thermostatically-Controlled Models Only).

CAUTION: Avoid damage to gas control. Hold gas control with wrench when connecting it to gas piping and/or fittings (Remote-Ready Models Only).

 

3" Minimum

Natural

 

From Gas

 

 

 

 

 

 

Meter

 

Pipe

Cap Tee

(5" W.C.**

 

Nipple

Joint

to 10.5"

Gas

Sediment Trap

W.C.

Control

Pressure)

 

 

Figure 16 - Gas Connection (Remote-

Ready Models Only)

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

Accessories, page 42.

**Minimum inlet pressure for purpose of input adjustment.

119426-01A

www.desatech.com

15

Page 15
Image 15
Desa HRB3930/3924, P)T, P)R, HRB3624 Propane/LP, Natural, Minimum inlet pressure for purpose of input adjustment

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