Desa Tech CHDV34NA, CHDV34PA Inspecting Burners, Operating Optional GWMT1 Wall Mounted Thermostat

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CHDV34NA, PA DIRECT-VENT FIREPLACE (NATURAL/PROPANE/LP)

OPERATING

FIREPLACE

Continued

OPERATING

OPTIONAL GWMT1

WALL MOUNTED

THERMOSTAT

WARNING: Do not connect the thermostat to a power source. Electrical shock and/or a fire haz- ard will occur.

Light the fireplace as instructed in Light- ing Instructions on page 24. Set wall ther- mostat to desired temperature.

This thermostat has been electronically calibrated at the factory and requires no adjustment or leveling.

Upon installation, the thermostat must be allowed to stabilize at room tempera- ture for a minimum of 30 minutes for proper operation.

To turn the fireplace off, adjust thermo- stat to the lowest setting and turn the gas control knob back to PILOT. The pilot will remain lit.

IMPORTANT: To turn the pilot off, turn the gas control knob on the heater to the OFF position.

OPERATING

OPTIONAL BLOWER

ACCESSORY

Locate the blower controls by opening the lower louver panel on the fireplace. Blower controls are located on the left side of the switch bracket to the left just inside the louver panel.

Both the GA3750 manual blower and the CDA3620T thermostatically-controlled blower have an ON setting and an OFF setting. The blower will only run when the switch is in the ON position. In the OFF position, the blower will not operate.

Note for DA3620T Only: If you are using DA3620T blower with optional ther- mostat (wall mounted or remote control) for the fireplace, your fireplace and blower will not turn on and off at the same time. The fireplace may run for several minutes before the blower turns on. After the heater modulates to the pilot position, the blower will continue to run. The blower will shut off after the firebox temperature decreases.

The blower helps distribute heated air from the fireplace. Periodically check the louvers of the firebox and remove any dust, dirt, or other obstructions that will hinder the flow of air.

INSPECTING

BURNERS

Check pilot flame pattern and burner flame patterns often.

PILOT ASSEMBLY

The pilot assembly is factory preset for the proper flame height. Alterations may have occurred during shipping and handling. Call a qualified service person to readjust the pilot if necessary.

The height of the thermopile must be 3/8" to 1/2" above the pilot flame as shown in Figure

56.The thermocouple must be at a height of about 1/8" above the pilot flame. The flame from the pilot burner must extend beyond both the thermocouple and thermopile.

If you pilot assembly does not meet these requirements:

•turn fireplace off (seeTo Turn Off Gas to Appliance, page 24)

•seeTroubleshooting, pages 28 through 30

Thermopile

3/8" to 1/2"

Pilot Burner

1/8"

Thermocouple

Piezo

Ignitor

Figure 56 - Pilot Assembly

BURNER FLAME PATTERN

Burner flames will be steady; not lifting or floating. Flame patterns will be different from unit to unit and will vary depending on installation type and weather conditions.

If the vent configuration is installed incor- rectly, the flames will lift or "ghost". This can be dangerous. Inspect the flames after installation to ensure proper installation and performance.

Figure 57 shows a typical flame pattern for CHDV34(N/P)(A) models.

If burner flame pattern differs from that described:

•turn fireplace off (seeTo Turn Off Gas to Appliance, page 24)

•seeTroubleshooting, pages 28 through 30

Figure 57 - Typical Flame Pattern for CHDV34NA, PA

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Contents Natural GAS Model CHDV34NA PROPANE/LP GAS Model CHDV34PA For Your SafetyFor Your Safety What to do if YOU Smell GAS Safety Information CHDV34NA, PA DIRECT-VENT Fireplace NATURAL/PROPANE/LPLocal Codes Product FeaturesProduct Identification Glossary TermsClearances PRE-INSTALLATION PreparationLocation and Space Requirements Framing and FinishingGeneral Venting Location of Vent TerminationGeneral Venting Installation Planning Venting InstallationInstallation Precautions Installing Vent System in a ChaseInstallation for Horizontal Termination Snorkel TerminationVent Pipe Connections Horizontal Termination Configurations Horizontal VentingVenting with Two 90 Elbows Cathedral Ceiling Installation Installation for Vertical TerminationFlat Ceiling Installation Vertical Termination Configurations Venting with One 90 ElbowComfort Glow Rigid Venting High Altitude InstallationParts Lists for Venting Kits and Components Number DescriptionNumber Description Available from Desa International Comfort Glow Flexible VentingSimpson Dura-Vent GS 4 x 6 5/8 Available from Simpson Dura-Vent OnlyInstalling GA3750/CDA3620T Blowers Fireplace InstallationInstalling Optional Blower Accessory Check GAS TypeIf your fireplace system is installed Installing GAS Piping to Fireplace Location Installation Items NeededPressure Testing Gas Supply Piping System Connecting Fireplace to GAS SupplyInstallation Items Needed Checking GAS ConnectionsPressure Testing Fireplace Gas Connections Close manual shutoff valve see Fig- ureInstalling Remote Receiver REMOVING/REPLACING Glass DoorInstalling Optional Brick Liner CD8037A Installing Rear Brick Panel and Retainer Brackets Installing LOGS, Lava Rock and Glowing Embers Installing Log NoOperating Fireplace For Your Safety Read Before LightingManual Lighting Procedure Lighting InstructionsCghrc Series Operation Optional Remote OperationThermostat Control Operation Cghrct Series OperationInspecting Burners Operating Optional Blower AccessoryPilot Assembly Operating Optional GWMT1 Wall Mounted ThermostatPilot and Burners Cleaning and MaintenanceGlass Door LogsTroubleshooting Observed Problem Possible CauseObserved Problem Possible Cause Remedy Gas leak. See Warning statement AboveWiring Diagram Replacement PartsService Hints Technical ServiceIllustrated Parts Breakdown CHDV34NA CHDV34PAParts List DIRECT-VENT Fireplace CHDV34NA CHDV34PAAccessories GMC11F Series Walnut Finished Hardwood Veneer Cabinet MantelHearth Base GMC13F Series Stained Oak VeneerWarranty Information
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