Desa installation manual Checking GAS Connections, Pressure Testing Gas Supply Piping system

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12

INSTALLATION

Connecting To Gas Supply (Cont.) Checking Gas Connections

INSTALLATION

Continued

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 Figure 15).

IMPORTANT: Install equipment shutoff valve in an accessible location. The equipment 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 Figure 15. 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.

From Gas Meter

CSA Design-Certified Equipment

Shutoff Valve With 1/8" NPT Tap*

(5" W.C.** to

 

10.5" W.C.

Approved Flexible

Pressure)

Gas Hose (if allowed

 

by local codes)

Tee

 

Joint

 

Pipe

3" Minimum

 

Nipple

Gas

 

Cap

Regulator

 

Sediment Trap

Figure 15 - Gas Connection

*Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 36.

**Minimum inlet pressure for purpose of input adjustment.

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at once.

WARNING: Never use an open flame to check for a leak. Apply a noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

Pressure Testing Gas Supply Piping system

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

1.Disconnect appliance with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping sys- tem. Pressures in excess of 1/2 psig will damage heater regulator.

2.Cap off open end of gas pipe where equipment shutoff valve was connected.

3.Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.

4.Check all joints of gas supply piping system. Apply a noncor- rosive leak detection fluid to gas joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Reconnect heater and equipment shutoff valve to gas supply. Check reconnected fittings for leaks.

Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)

1.Close equipment shutoff valve (see Figure 16).

2.Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.

3.Check all joints from gas meter to equipment shutoff valve (see Figure 17, page 13). Apply a noncorrosive leak detection fluid to gas joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Open

Equipment

Shutoff Valve

Closed

Figure 16 - Equipment Shutoff Valve

For..com

107123-01F

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Contents
OWNER’S Operation Installation Manual Unvented VENT-FREE Natural GAS LOG HeatersBiltmore Split OAK, Seasonal OAK, Smoky Mountain OAK Logs What to do if YOU Smell GASTable of Contents Safety InformationProduct Identification Product Features AIR for Combustion and Ventilation UnpackingLocal Codes Determining 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 InstallationCheck GAS Type Minimum Firebox Size Log Front Rear Height Depth WidthIf 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 FluesConnecting to GAS Supply Attaching Flexible Gas Hose to Heater Gas RegulatorPressure Testing Gas Supply Piping system Checking GAS ConnectionsInstalling Logs Pressure Testing Heater Gas ConnectionsDual Burner Smoky Mountain Oak Models Dual Burner Premium Aged Split Oak Models Dual Burner Biltmore Split Oak ModelsInstalling Rear Log Installing Crossover Log Single Burner Seasonal Oak ModelsFor Your Safety Read Before Lighting Operating HeaterLighting Instructions Manual Lighting Procedure Variable Control OperationTo Turn OFF GAS To Appliance Shutting Off HeaterIgnitor Button Cleaning and Maintenance Inspecting BurnersSpecifications LogsModel Models ModelTroubleshooting Observed Problem Possible Cause RemedyRefer to Air for Combustion and Venti Top Gas leak. See Warning statement at topOptional Positioning of Thermostat Sensing Bulb For Masonry and Factory-built Metal FireplaceIllustrated Parts Breakdown Parts List Variable Manually-ControlledCGD3018NT CGD3924NT CGD3930NT CGD3018NT CGD3924NT CGD3930NT CCL3018NT Thermostatically-Controlled Biltmore Split Oak ModelCCL3018NT CCL3924NT, CCL3930NTA CCL3924NT CCL3930NTA Variable Manually-Controlled Seasonal Oak Models Variable Manually-Controlled Mountain Oak Models CRL2718N CRL3124NReplacement Parts Service HintsTechnical Service AccessoriesOwners Registration Form Postage Required Parts Central Warranty Information