Vanguard Heating UNVENTED (VENT-FREE) NATURAL GAS LOG HEATER Connecting to GAS Supply

Page 12

VANGUARD FLAME MAX®

UNVENTED NATURAL GAS LOG HEATER

INSTALLATION

Continued

CONNECTING TO GAS SUPPLY

NOTICE: A qualified service per- son must connect heater to gas supply. Follow all local codes.

Installation Items Needed

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

•piping (check local codes)

•sealant (resistant to LP gas)

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

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 heater. If pipe is too small, undue loss of pressure will occur.

CAUTION: Use pipe joint seal- ant that is resistant to liquid pe- troleum (LP) gas.

Install sediment trap in supply line as shown in Figure 13. Locate sediment trap where it is within reach for cleaning. Locate sedi- ment 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 control. Hold gas fitting with

•manual shutoff valve *

•test gauge connection *

•sediment trap

•tee joint

•pipe wrench

*An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Pur- chase the optional A.G.A. design-certified manual shutoff valve from your dealer. See Accessories, page 25.

Installation must include a manual 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).

Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves.

wrench when connecting it to gas piping and/or fittings.

A.G.A. Design-Certified

Manual Shutoff Valve With

1/8" NPT Tap*

Approved Flexible Gas Hose (if allowed by local codes)

Gas Control

Tee Joint

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

3" Minimum

Pipe Nipple

Sediment Trap

Cap

Figure 13 - Gas Connection

*Purchase the optional A.G.A. design-certified manual shutoff valve from your dealer. See Accessories, page 25.

**Minimum inlet pressure for purpose of input adjustment.

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Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GAS18, 24, 30, and 36 Remote Ready Model Patent PendingSafety Information Vanguard Flame MAX Unvented Natural GAS LOG HeaterProduct Features Remote Control AccessoriesProduct Identification Local CodesAIR for Combustion and Ventilation Providing Adequate VentilationUnusually Tight Construction Confined and Unconfined SpaceAIR for Combustion Ventilation Determining FRESH-AIR Flow for Heater LocationDetermining if You Have a Confined or Unconfined Space Ventilation AIR Ventilation Air From InsideBuilding Ventilation Air From OutdoorsInstallation InstallationCheck GAS Type Minimum Wall and Ceiling Clearances see FigureIf Using Mantel If Not Using MantelMinimum Noncombustible Material Clearances Determining Minimum Mantel Clearance When Using a Hood Mantel ClearancesFloor Clearances Determining Minimum Mantel ClearanceInstalling Damper Clamp Accessory for Vented Operation Installing Heater Base AssemblyChimney Minimum Permanent Height ft Flue Opening sq. ins Installation Items Needed Attaching Flexible Gas Hose to HeaterConnecting to GAS Supply Wrench when connecting it to gas piping and/or fittingsPressure Testing Gas Supply Piping System Pressure Testing Heater Gas ConnectionsChecking GAS Connections Test Pressures In Excess Of 1/2 PsigInstalling Logs Place lava rock around base of heaterFor Your Safety Read Before Lighting Operating HeaterLighting Instructions Manual Lighting Procedure To Turn OFF GAS To ApplianceOptional Remote Operation Inspecting Burners Pilot Flame PatternBurner Primary AIR Holes Main BurnerCleaning and Maintenance Cleaning Burner Injector Holder and Pilot AIR Inlet HoleLogs Troubleshooting Observed Problem Possible CauseObserved Problem Possible Cause Remedy Top Gas leak. See Warning statement at topIllustrated Parts Breakdown Parts List VYD18NRA, VYD24NRA VYD30NRA, and VYD36NRWiring Diagram Replacement Parts SpecificationsService Hints Technical ServiceAccessories Warranty Information International
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