TOA Electronics P0055-DRG manual Maintenance, Manual Reset Limit Switch Lintel, Adjustment

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Maintenance

The appliance and venting system should be thoroughly inspected before initial use and at least annually by a qualified service techni- cian. Proper maintenance and use will require more frequent, less extensive inspections and servicing by the homeowner.

Generally, annual inspections should be per- formed by a qualified service technician. More frequent periodic inspections and cleanings should be performed by the homeowner. Any discrepancies discovered by the homeowner should result in a call to a qualified service technician to effect the repair or correction.

Refer to the maintenance schedule for mainte- nance tasks, procedures, periodicity and by whom they should be performed.

IMPORTANT: TURN OFF GAS AND ANY ELEC- TRICAL POWER BEFORE SERVICING THE APPLIANCE.

MANUALLY-RESET BLOCKED FLUE SAFETY SWITCH

This appliance is equipped with a manually- reset blocked flue safety switch. Refer to Figure 7 for its location. If during appliance operation, the flame goes out (independently of the burner on/off wall switch), it may be due to the operation of this safety limit switch. First allow the appliance to cool. Then reset the safety switch by pushing the red reset button on the back of the switch.

CAUTION: THE ELECTRONIC APPLIANCE SHOULD BE TURNED OFF BEFORE REMOV- ING THE LIMIT SWITCH.

To access the safety limit switch reset button, remove the two screws. Pull out limit switch with low voltage wires attached, push the reset button, then reinstall the limit switch. At this time turn the electronic appliance back on.

The appliance should then relight and remain lit. If this does not occur, turn off the appli- ance and call a qualified service technician.

Burner Adjustments

Flame Appearance and Sooting

Proper flame appearance is a matter of taste. Generally most people prefer the warm glow of a yellow to orange flame. Appliances operated with air shutter openings that are too large, or with long vertical vent runs, will exhibit flames that are blue and transparent. These weak, blue and transparent flames are termed anemic.

Manual Reset Limit Switch

Lintel

Extention

Firebox Wrapper

Limit Switch Screws

Figure 7

If the air shutter opening is too small sooting may develop. Sooting is indicated by black puffs developing at the tips of very long orange flames. Sooting results in black deposits form- ing on the logs, appliance inside surfaces and on exterior surfaces adjacent to the vent termi- nation. Sooting is caused by incomplete com- bustion in the flames and a lack of combustion air entering the air shutter opening.

To achieve a warm yellow to orange flame with an orange body that does not soot, the shutter opening must be adjusted between these two extremes.

No smoke or soot should be present. Reposi- tion the log set if the flames impinge on any of them.

If sooting conditions exist, the air shutter opening on the main burner can be adjusted. Normally, the more offsets in the vent system, the greater the need for the air shutter to be opened further.

WARNING: AIR SHUTTER ADJUSTMENT SHOULD ONLY BE PERFORMED BY A QUALIFIED PROFESSIONAL SERVICE TECHNICIAN.

Adjustment

To adjust the flame, position the air shutter to the nominal setting (Figure 8 ). Allow the burner to operate for at least 30 minutes. Observe the flame continuously. If it appears weak or sooty as previously described, adjust the air shutter open or closed until desired effect is achieved.

Orifice

Air Shutter

Adjusting

Set Screw

Burner Tube

Nominal Air Shutter Settings:

Natural Gas - Closed

Propane Gas - 1/6 in. (1.59 mm) Open

Figure 8

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

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Contents Vented GAS Fireplaces Retain These Instructions725,029M REV. C 07/2004 GRD-5500 SHOWNGHC-5500PGRD-5500NCongratulations Table of ContentsControl Compartment Access GRD-5500 Units Gas Controls/Control Compartment AccessControl Compartment Access GHC-5500 Units Operation and Care of Your ApplianceOutside Combustion Air Controls Millivolt Appliance LightingElectronic Appliance Lighting Manual Reset Limit Switch Lintel MaintenanceFirebox Wrapper Limit Switch Screws Burner Adjustments Flame Appearance and SootingMaintenance Task Accomplishing Person Maintenance ScheduleMaintenance Task Accomplishing Person Procedure Electronic Appliance Checkout Logs and Rockwool Glowing Embers PlacementMillivolt Appliance Checkout LOG Placement Replacement Parts WarrantyElectronic System Wiring Without Forced Air Kit Product Reference InformationTo Turn OFF GAS to Appliance Lighting Instructions Millivolt GAS ValveLighting Instructions Pour Fermer LE GAZ QUI Alimente L’APPAREIL Instructions D’ALLUMAGE Vanne GAZ MillivoltInstructions Dallumage To Shut OFF Lighting Instructions ElectronicWhat to do if YOU Smell GAS Instructions D’ALLUMAGE Electronic Fermez la porte du compartiment de contrôle du basDefective limit switch Lighting instructions Switch wiring On generatorPilot burning, no gas to Wall switch or wires Wall switch onSymptom Possible Causes Corrective Action Troubleshooting the Electronic Ignition SystemStandard Remote Control System Model RCL Accessory ComponentsHorizontal Trim Installation Aluminum-Framed Bi-Fold DoorsGAS CONTROLS- Robertshaw Millivolt Replacement Parts List Millivolt SystemGRD-5500 GHC/GRD-5500Replacement Parts Millivolt GAS CONTROLS- Robertshaw Electronic Replacement Parts List Electronic SystemManufactured by LHP 725,029M REV. C 07/2004 Replacement Parts Electronic