Desa 30, R, V, T Connecting to GAS Supply, External Regulator With Vent Pointing Down

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INSTALLATION

Connecting To Gas Supply

INSTALLATION

Continued

CONNECTING TO GAS SUPPLY

WARNING: This appliance requires a 1/2" 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.

CAUTION: Never connect propane/LP fireplace di- rectly to the propane/LP supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and propane/LP supply.

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

Installation Items Needed

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

external regulator (supplied by installer)

piping (check local codes)

sealant (resistant to propane/LP gas)

equipment shutoff valve *

test gauge connection *

sediment trap

tee joint

pipe wrench

approved flexible gas line with gas connector (if allowed by lo- cal codes) (not provided)

*A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 36.

For propane/LP units, the installer must supply an external regula- tor. 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 point- ing down as shown in Figure 15. 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 certain areas. Check your local codes. Use pipe of 1/2" diam- eter or greater to allow proper gas volume to heater. 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 heater (see Figures 16 or 17 page 13, 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 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.

We recommend that you install a sediment trap in supply line as shown in Figures 16 or 17 page 13, depending on your model. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment 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 (Variable Manually-Controlled and 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).

External Regulator

Propane/LP

Supply Tank

Vent Pointing Down

Figure 15 - External Regulator With Vent Pointing Down

For..com

110882-01C

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Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GASTable of Contents Safety InformationProduct Identification Product IdentificationOptional Remote Control Accessories Product FeaturesLocal Codes UnpackingDetermining FRESH-AIR Flow for Heater Location Confined and Unconfined SpaceDetermining if You Have a Confined or Unconfined Space Ventilation AIR Ventilation Air From Inside BuildingVentilation Air From Outdoors Installation Installation and Clearances for VENT-FREE OperationCheck GAS Type If Not Using Mantel Minimum Noncombustible Material ClearancesDetermining Minimum Mantel Clearance When Using a Hood Mantel ClearancesFloor Clearances Determining Minimum Mantel ClearanceInstalling Damper Clamp Accessory for Vented Operation Installing Heater Base AssemblyInstallation Items Needed Area of Various Standard Round FluesAttaching Base to Fireplace Floor Remote-Ready Models Only Connecting to GAS Supply External Regulator With Vent Pointing DownPressure Testing gas Supply Piping system Checking GAS ConnectionsInstalling Logs Pressure Testing Heater Gas ConnectionsInstalling Front Log #1 Operating Heater Lighting InstructionsManual Lighting Procedure To Turn OFF GAS To ApplianceThermostat Control Operation Shutting Off HeaterREMOTE-READY Models For Your Safety Read Before Lighting Variable Control OperationControl Knob and Ignitor Button Location Optional HAND-HELD Remote Operation Pilot Propane/LP Pilot NaturalManual Mode Auto Thermostatic ModeSafety Features ON/OFF Series Model GhrcbInspecting Burners Pilot Flame PatternFront Burner Flame Pattern Cleaning Maintenance Cleaning Burner Injector Holder and Pilot AIR Inlet HoleLogs Main BurnerTroubleshooting Observed Problem Possible Cause RemedyRefer to Air for Combustion and Venti Gas leak. See Warning statement Optional Positioning of Thermostat Sensing Bulb For Masonry and FACTORY-BUILT Metal FireplaceThermostat-Controlled Models Only Specifications Remote-ReadyWiring Diagram Replacement Parts Service HintsTechnical Service Parts Under WarrantyIllustrated Parts Breakdown Parts List Variable MANUALLY-CONTROLLED Split OAK ModelsTHERMOSTAT-CONTROLLED Models NVS18NT, NVS18PT THERMOSTAT-CONTROLLED Models Items 4 REMOTE-READY Variable Control Accessories Owners Registration Form Postage Required 110882-01C Warranty Information
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