Design Dynamics DVF-36S-N installation manual Gas Connection

Natural - From

Gas Meter (5.5" W.C. to 10.5" W.C. Pressure) Propane/LP From External Regulator (11" W.C. to 14" W.C. Pressure)

Fireplace

Installation

Continued

For propane/LP connection only, the installer must supply an external regulator. The exter- nal regulator will reduce incoming gas pres- sure. You must reduce incoming gas pressure to between 11" and 14" of w.c. pressure. 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 20. 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" diameter or greater 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 fireplace (see Figure 21).

IMPORTANT: Install main gas valve (equip- ment shutoff valve) in an accessible location. The main gas valve is for turning on or shutting off the gas to the appliance.

Check your building codes for any special requirements for locating equipment shutoff valve to fireplaces.

Propane/LP

Supply TankExternal

Regulator

Vent

Pointing

Down

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.

We recommend that you install a sediment trap/drip leg in supply line as shown in Figure

21.Locate sediment trap/drip leg where it is within reach for cleaning. Install in piping sys- tem between fuel supply and fireplace. Locate sediment trap/drip leg where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into fireplace gas controls. If sedi- ment trap/drip leg is not installed or is installed wrong, fireplace may not run properly.

CSA Design-Certified Equipment Shutoff Valve with 1/8" NPT Tap*

Approved

Flexible

Gas Line

3" Minimum

Cap Pipe Tee

Joint Nipple

Sediment Trap/

Drip Leg

Figure 21 - Gas Connection

*The CSA design-certified equipment shutoff valve may be supplied with the appliance or you can purchase it from your retailer.

Figure 20 - External Regulator with Vent

Pointing Down (Propane/LP Only)

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