8

INSTALLATION

Installing Heater To Wall (Cont.) Connecting To Gas Supply

INSTALLATION

Continued

Installing Bottom Mounting Screw

1.Locate bottom mounting hole. This hole is near bottom on back panel of heater (see Figure 11).

2.Mark screw location on wall.

3.Remove heater from wall.

4.If installing bottom mounting screw into hollow or solid wall, install wall anchor. Follow steps 1 through 5 under Attaching To Wall Anchor Method, page 7. If installing bottom mounting screw into wall stud, drill hole at marked location using 9/64" drill bit.

5.Replace heater on wall.

6.Insert bottom anchor screw through back panel into bottom anchor or drilled hole (see Figure 11).

7.Tighten screw until heater is firmly secured to wall. Do not over tighten.

Note: Do not replace front panel at this time. Replace front panel after making gas connections and checking for leaks (see pages 8 through 10).

Figure 11 - Installing Bottom Mounting Screw

CONNECTING TO GAS SUPPLY

WARNING: This appliance requires a 3/8" NPT (National Pipe Thread) inlet connection to the pres- sure regulator.

WARNING: A qualified service person must con- nect heater to gas supply. Follow all local codes.

WARNING: For natural gas, never connect heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas.

IMPORTANT: For natural gas, check gas line pressure before connecting heater to gas line. Gas line pressure must be no greater than 14 inches of water. If gas line pressure is higher, heater regulator damage could occur.

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CAUTION: For propane/LP gas, never connect heater directly to the propane/LP supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and pro- pane/LP supply.

For propane/LP gas, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 12. Pointing the vent down protects it from freezing rain or sleet.

CAUTION: Use only new, black iron or steel pipe. Internally-tinned copper tubing may be used in cer- tain areas. Check your local codes. Use pipe of large enough diameter to allow proper gas volume to heater. If pipe is too small, undue loss of volume will occur.

Installation must include 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 13, page 9).

IMPORTANT: Install an 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 requirements 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.

Propane/LP

 

Supply Tank

External Regulator

 

Vent Pointing Down

Figure 12 - External Regulator With Vent Pointing Down (propane/LP systems only)

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Desa VP10A VN10TA, VP10TA VN6D installation manual Connecting to GAS Supply, Installing Bottom Mounting Screw
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