Desa VS18NR Connecting to GAS Supply, Attaching Flexible Gas Hose to Heater Gas Regulator

Page 11

OWNER’S MANUAL

INSTALLATION

Continued

3.Mark screw locations through holes in front panel of base (see Figure 12). If installing in a brick-bottom fireplace, mark screw locations in mortar joint of bricks.

4.Remove heater base from fireplace.

5.Drill holes at marked locations using 3/16" masonary drill bit.

6.Attach base to fireplace floor using two masonry screws (in hardware package).

7.Connect to gas supply. See Connect- ing To Gas Supply.

Gas Control

Flexible Gas Hose (if allowed by local codes)

Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator

Masonry Screws

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)

•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 23.

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

A.G.A. Design-Certified

Manual Shutoff Valve With

1/8" NPT Tap*

From

Gas Supply (5" W.C.** to 10.5" W.C.

Pressure)

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.

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.

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

Approved Flexible Gas Hose (if allowed by local codes)

Figure 12 - Attaching Base to Fireplace

Tee

 

Floor

Joint

 

Sediment

Pipe

3" Minimum

Trap

Nipple

 

 

 

 

Cap

 

Gas Control

Figure 13 - Gas Connection

*Purchase the optional A.G.A. design-certified manual shutoff valve from your dealer. See Accessories, page 23.

** Minimum inlet pressure for purpose of input adjustment.

Continued

 

 

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Contents What to do if YOU Smell GAS OWNER’S Operation and Installation ManualDesa International Unvented Natural GAS LOG Heater Safety InformationLocal Codes Product FeaturesRemote Control Accessories Product IdentificationConfined and Unconfined Space AIR for Combustion and VentilationProviding Adequate Ventilation Unusually Tight ConstructionDetermining if You Have a Confined or Unconfined Space AIR for Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation Air From Outdoors Ventilation AIRVentilation Air From Inside BuildingMinimum Fireplace Clearance to Combustible Materials InstallationInstallation Clearances Check GAS TypeOperation, If Using MantelIf Not Using Mantel Minimum Noncombustible Material ClearancesDetermining Minimum Mantel Clearances Determining Minimum Mantel Clearance When Using a HoodMantel Clearances Floor ClearancesChimney Minimum Permanent Height ft Flue Opening sq. ins Installing Damper Clamp Accessory for Vented OperationInstalling Heater Base Assembly Installation Items NeededAttaching Flexible Gas Hose to Heater Gas Regulator Connecting to GAS SupplyTest Pressures Equal To or Less Than 1/2 Psig Pressure Testing Heater Gas ConnectionsPressure Testing gas Supply Piping system Checking GAS ConnectionsInstalling Front Logs #1L and #1R Installing LogsLighting Instructions For Your Safety Read Before LightingOperating Heater Optional Remote Operation Manual Lighting ProcedureTo Turn OFF GAS to Appliance Shows Temperature Setting Front Burner Flame Pattern Inspecting BurnersPilot Flame Pattern Logs Cleaning and MaintenanceCleaning Burner Injector Holder and Pilot AIR Inlet Hole Observed Problem Possible Cause Remedy TroubleshootingSee Wiring Diagram, Above Gas leak. See Warning statementTechnical Service SpecificationsWiring Diagram Replacement Parts Service HintsAccessories Variable Control CFS18NR VS18NR VS24NR VS30NR Illustrated Parts BreakdownCFS18NR VS18NR VS24NR VS30NR Parts ListInternational Warranty Information
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