York SUNLINE 2000 D2CG 072 Installation Instructions Manual

Contents

York SUNLINE 2000 D2CG 072 Installation Instructions Manual Manual pdf 19 page image

NORMAL MAINTENANCECAUTION: Prior to any of the following maintenance proce-dures, shut off all power to the unit to preventpersonal injury.Periodic maintenance normally consists of changing or cleaningfilters and (under some conditions) cleaning the main burners.FILTERS - Inspect once a month. Replace disposable or cleanpermanent type as necessary. DO NOT replace permanenttype with disposable.MOTORS - Indoor fan and outdoor fan motors are permanentlylubricated and require no maintenance. Ventor motor is factorylubricated for an estimated 10 year life.OUTDOOR COIL - Dirt should not be allowed to accumulateon the outdoor coil surface or other parts in the air circuit.Cleaning should be as often as necessary to keep coil clean.Use a brush, vacuum cleaner attachment, or other suitablemeans. If water is used to clean coil, be sure power to the unitis shut off prior to cleaning.NOTE: Exercise care when cleaning the coil so that the coilfins are not damaged.Do not permit the outdoor air discharge to be ob-structed by overhanging structures of shrubs.BURNER & PILOT - Periodically (at least annually at the beginningof each heating season) make a visual check of the pilot and mainburner flame. If necessary, adjust main burner primary air shuttersso that no yellow flame is observed as explained under “BURNERAIR SHUTTER ADJUSTMENT”. If it is not possible to adjust forthe proper flame, the burners may need cleaning.TO CLEAN BURNERS - Remove them from the furnace asexplained in “Burner Instructions”. Clean burners with hot waterapplied along top of the burner.COMBUSTION AIR DISCHARGE - Visually inspect dischargeoutlet periodically to make sure that the buildup of soot and dirtis not excessive. If necessary, clean to maintain adequatecombustion air discharge.The manufacture recommends that the furnace system beinspected once a year by a qualified service person.CLEANING FLUE PASSAGES AND HEATINGELEMENTSWith proper combustion adjustment the heating element of agas fired furnace will seldom need cleaning. If the elementshould become sooted, it can be cleaned as follows:1. Remove the burner assembly as outlined in “BURNERINSTRUCTIONS”.2. Remove the roof over the gas heat section.3. At the top front of the heat section, remove the screwsholding the top of the flue collector box. Carefully removethe top of the flue collector box without ripping the adjacentinsulation.4. Lift out the flue diverter baffle.5. On the inside of the flue collector box, remove the screwsholding the flue baffle. Remove the flue baffle.6. Using a wire brush on a flexible wand, brush out the insideof each heat exchanger from the burner inlet and flue outletends.7. Brush out the inside of the flue collector box and the fluebaffles.8. Run the wire brush down the vent tube from the fluecollector end.9. If soot build-up is particularly bad, remove the vent motorand clean the wheel and housing. Run the wire brush downthe flue extentions at the outlet of the vent housing.10. After brushing is complete, blow all brushed areas with airor nitrogen. Vacuum as needed.11. Replace parts in the order they were removed in Steps1 to 5.12. When replacing the top of the flue collector box, be carefulso as not to tear the adjoining insulation.13. Assure that all seams on the vent side of the combustionsystem are air tight. Apply a high temperature (+500°F)sealing compound where needed.MAINTENANCETROUBLESHOOTINGc. If “BR” is pulled in and the blower motor still does notrun, replace the blower motor.d. If “BR” is not pulled in check for 24 volts at the “BR” coil.If 24 volts is present, replace the “BR” relay.e. If 24 volts is not present at the “BR” coil, check for loose24 volt wiring back to the relay board. Check controlwiring to the room thermostat. If all is fine, replace therelay board.f. If the blower motor runs with the fan switch in the “ON”position but does not run soon after the furnace hasignited with the fan switch in the “AUTO” position, checkfor loose 24 volt wiring between the relay board in themain control box.g. If all control wiring is fine, check for 24 volts at the relayboard. If 24 volts is present, replace the relay board. If24 volts is not present, replace the “BT” or "ETD".NOTE: The furnace may shut itself down on a high tempera-ture condition during the procedure but this will noteffect the test if it is done within 5 minutes of furnaceshut-down.WARNING: Troubleshooting of components necessarily re-quires opening the electrical control box with thepower connected to the unit. Use extreme carewhen working with live circuits! Check the unitnameplate for the correct line voltage and set thevolt meter to the correct range before making anyconnections with line terminals.CAUTION: The wire number or color and terminal designationsreferred to may vary. Check the wiring label inside thecontrol box access panel for the correct wiring.1. Draft motor operates and furnace lights but supply airblower does not start after a short time delay with roomthermostat fan switch set to “AUTO”.a. Set fan switch to “ON”. If blower motor runs, go to Stepf. If it does not, check to see if line voltage is beingsupplied to the contacts of the blower relay, “BR”, andif the blower relay is pulled in. Check for loose wiring.b. If “BR” is pulled in, touch the supply air blower motorhousing. If it is hot the motor may be off on inherentprotection. Disconnect power to the unit and check theblower motor capacitor. If it is defective, replace it withone of equal capacitance and voltage.530.18-N8YUnitary Products Group 19

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