Bard WG241 Installation Instructions Manual

Also see for WG241: Installation instructions

Bard WG241 Installation Instructions Manual Manual pdf 34 page image

Manual 2100-365Page 3127. SERVICE AGENCY PROCEDURESMAIN BURNERObserve the main burners in operation. The flameshould be mostly “blue” with possibly a little orange(not yellow) at the tips of the flame. The flamesshould be in the center of the heat exchanger tubes andnot impinging on the heat exchanger surfacesthemselves.Observe the fire until the blower starts (there is anormal delay period until the heat exchanger warmsup). There should be no change in the size or shape ofthe flame. If there is any wavering or blowing of theflame on blower start-up, it is an indication of apossible leak in the heat exchanger.28. MAINTAINING UNIT IN GOODWORKING ORDERThe unit should be inspected annually by a qualifiedservice agency.BURNERS / HEAT EXCHANGER / FLUE GASPASSAGE WAYSThe burners, heat exchanger and interior flue gaspassages may be inspected using a light on smallmirror or an extension handle. Remove the screwssecuring the inducer and collector box. Now inspectthe upper tubes of the heat exchanger.Check the exterior of the heat exchanger and theinterior flue gas passages for any evidence ofdeterioration due to corrosion, cracking or othercauses. If signs of sooting exist, remove the burnersand clean the heat exchanger, as required.GASINLETGAS CONTROL KNOBSHOWN IN “OFF” POSITIONPRESSURE REGULATORADJUSTMENT (UNDERCAP SCREW)INLETPRESSURETAPOUTLETPRESSURETAPWARNINGFollow these procedures before inspectingfurnace.• Turn room thermostat to its lowest or offsetting.• Turn off manual gas shutoff valve.• Wait at least 5 minutes for furnace to coolif it was recently operating.• Turn off furnace electrical power; failureto do so could result in injury or death.FIGURE 16TOP VIEW OF GAS CONTROLWARNINGUse replacement parts listed in theReplacement Parts list only. The use ofincorrect parts could cause improper unitoperation, resulting in damage, injury ordeath.CAUTIONLabel all wires prior to disconnection whenservicing controls. Wiring errors can causeimproper and dangerous operation. Verifyproper operation after servicing.