Lennox International Inc. G32V SERIES User's Manual
Contents
1. SURELIGHT INTEGRATED X CONTROL BLOWER MOTOR CIRCUIT TRANSFORMER BREAKER CONTROL BOX VSP CONTROL ai TWO STAGE CONTROL BLOWER ACCESS DOOR Figure 1 Page 2 A WARNING Product contains fiberglass wool Disturbing the insulation in this product during installation maintenance or repair will expose you to fiberglass wool dust Breathing this may cause lung cancer Fiberglass wool is known to the State of California to cause cancer Fiberglass wool may also cause respiratory skin and eye irritation To reduce exposure to this substance or for further information consult material safety data sheets available from address shown below or contact your supervisor Lennox Industries Inc P O Box 799900 Dallas TX 75379 9900 A WARNING Do not set thermostat below 60 F 16 C in heating mode Setting thermostat below 60 F 16 C re duces the number of heating cycles Damage to the unit may occur that is not covered by the warranty A WARNING If overheating occurs or if gas supply fails to shut off shut off the manual gas valve to the appliance before shutting off electrical supply A WARNING Do not use this furnace if any part has been under water Immediately call a qualified service techni cian to inspect the furnace and to replace any part of the control system and any gas control which has been under water A CAUTION Before attempting to perform any ser2. LENNOX USER S INFORMATION TE eee isk WA WUA L AT a caso G32V SERIES GAS FURNACE Technical Publications Litho U S A PITA A WARNING GAS If the information in this manual is not IGS followed exactly a fire or explosion Ss CERTIFIED may result causing property damage APPROVED personal injury or loss of life lt WHAT TO DO IF YOU SMELL GAS Do not store or use gasoline or other e Do not try to light any appliance flammable vapors and liquids in the e Extinguish any open flames vicinity of this or any other appliance e Do not touch any electrical switch do not use any phone in your building Installation and service must be per Immediately call your gas supplier from a neighbor s phone Follow the gas suppli formed by a qualified installer service are ee agency or the gassupplier e If you cannot reach your gas supplier call the fire department 07 01 504 391M MANA NN N T G32V Parts Identification HEAT EXCHANGER ty ASSEMBLY FRESH AIR INTAKE ZS CONNECTION aH TA 0 FLUE COLLAR fc foe N BURNERS TOP CAP lt __ CABINET FLAME SIGHT GLASS LOW HEAT PRESSURE SWITCH GAS MANIFOLD HIGH HEAT PRESSURE SWITCH 75 models only UPPER ACCESS T PANEL Cae BURNER TWO SPEED BRA COMBUSTION AIR BLOWER oJ Ve GAS A VALVE DOOR INTERLOCK O l Le i CONDENSATE SWITCH lp EEM l TRAP
3. ack assembly 3 Using the filter door pins pull filter door with filter at tached out of filter rack assembly Remove filter door from filter by pulling up on securing tabs 4 Clean filter with cold water and a mild soap Direct water through filter in the opposite direction of air flow Allow filter to dry then spray with filter handi coater prior to reinstallation Filter handicoater is available from your Lennox dealer as P 8 5069 5 Position filter door on end of filter so that the thumb tab side of the filter door is away from the furnace Check for correct air flow position Squeeze thumb tabs to secure filter to door Guide filter and filter door into the filter rack installed on side of furnace Push door into filter rack until secure O 1 REMOVING REPLACING FILTER DOOR FILTER DOOR A TAB PIN ssi aAA FILTER DOOR FILTER FILTER DOOR PIN Figure 5 Seasonal Inspections A qualified service technician should inspect the com plete system each season heating and cooling The fol lowing maintenance procedures should be conducted by a qualified service technician Do not attempt to service the unit in any way During a seasonal check the service technician will in spect the indoor blower the burner flame and the venting system Venting System Annually before heating season inspect furnace vent ing system heat exchanger and burners for corrosion deterioration or deposit
4. e distrib uted through the house by the furnace duct system Your furnace is a gas appliance It is critical that the gas supplied to the unit be completely burned to avoid the pro duction of carbon monoxide gas Complete combustion of the gas requires but is not limited to correct gas pres sure and gas flow rate adequate combustion air and proper venting A WARNING Carbon monoxide gas is invisible odorless and toxic Exposure to this gas can cause personal injury and even death to all occupants including pets Any item that is powered by or gives off heat from a combustion process including lawn mowers automobiles and fireplaces has the potential to produce carbon monoxide gas Because of this Lennox recommends the use of a carbon mon oxide detector in your home even if you do not own gas appliances Reliable detectors are available at rea sonable retail prices Contact your independent Lennox dealer for more details about this investment in your safety Your furnace is designed to meet standards set by nation al agencies and to operate safely when properly installed and maintained However the unit s performance can be Page 3 greatly impacted by the individual installation and the op erating environment It is your responsibility to ensure that this appliance is maintained Proper maintenance is critical for your safety and the satisfactory operation of the product Lennox strongly recommends annual
5. e inspections that may result in un safe operation For instance items innocently stored next to the furnace may obstruct the combustion air supply This could cause incomplete combustion and the produc tion of carbon monoxide gas Page 6
6. eration The foam filters supplied with the unit may be cleaned for reuse If replacement is necessary order Lennox part no 31J81 for 14 X 25 inch filter used in G32V 75 units or P 8 7831 for 20 X 25 inch filter used in G32V 100 and 125 units Use the following procedure to clean filter Bottom Return Air Filter Installation Figure 4 1 Turn off electric power to furnace 2 Remove blower access panel 3 Remove filter by pressing side filter clips and pulling filter up and out See figure 4 Page 4 BOTTOM RETURN FILTER INSTALLATION REAR FILTER CLIP FURNACE FRONT FURNACE BASE BOTTOM Figure 4 4 Clean filter with cold water and a mild soap Direct water through filter in the opposite direction of air flow Remove all soap residue 5 Allow filter to dry then spray with filter handicoater prior to reinstallation Filter handicoater is available from your Lennox dealer as P 8 5069 6 Place filter in bottom of blower compartment beneath rear filter clip Press down on filter sides Filter clips flex allowing filter to snap into place 7 Replace blower access panel A WARNING Blower door must be securely in place when blower and burners are operating Gas fumes which could contain carbon monoxide can be drawn into living space resulting in personal injury or death Side Return Air Filter Installation Figure 5 1 Turn off electric power to furnace 2 Locate the filter door of the filter r
7. h automatically lights the burners Do not try to light the burners by hand 5 Remove upper access panel 6 Turn the gas valve knob to OFF Do not force See fig ure 3 HONEYWELL VR8205 Series Gas Valve high fire adjusting screw under cap manifold pressure tap low fire adjusting screw under cap inlet pressure tap Gas Valve Shown In OFF Position Figure 3 7 Wait fifteen 15 minutes to clear out any gas If you then smell gas STOP Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you do not smell gas go to next step 8 Turn the gas valve knob to ON 9 Replace upper access panel 10 Turn on all electrical power to unit 11 Set thermostat to desired setting 12 If the appliance still will not operate follow the in structions To Turn Off Gas To Unit and call your ser vice technician or gas supplier Turning Off Gas To the Unit 1 Set thermostat to lowest setting 2 Turn off all electrical power to unit if service is to be performed 3 Remove upper access panel 4 Turn the gas valve knob to OFF Do not force 5 Replace upper access panel A filter must be in place any time the unit is operating Factory installed filters are provided with the unit Ask your dealer to show you where the filter is located The filter should be inspected monthly and cleaned when necessary to assure proper furnace op
8. in spection and maintenance of this appliance Contact your independent Lennox dealer for an inspection by a qualified service technician Lighting and Operating Information A WARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life BEFORE LIGHTING smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor The unit is equipped with a gas control knob Use only your hand to move the gas control knob Never use tools If the knob will not move by hand do not try to repair it call a qualified service technician Force or attempted repair may result in a fire or explosion Placing the G32V furnace into operation G32V units are equipped with a SureLight ignition sys tem Do not attempt to manually light these furnaces Each time thermostat calls for heat the burners will be au tomatically lit by the ignitor The ignitor does not get hot when there is no call for heat Operating the Gas Valve Figure 3 1 STOP Read the safety information at the beginning of this section 2 Set thermostat to lowest setting See figure 2 THERMOSTATS HEAT sonas NSA C T Figure 2 3 Turn OFF all electrical power to appliance 4 This appliance is equipped with an ignition device whic
9. on of a problem before either personal injury or property damage occurs Do not hesitate to contact a qualified service technician as an investment in your well being Planned Service You should expect a service technician to check the fol lowing items during an annual inspection Power to the unit must be shut off for the service technician s safety Fresh air grilles and louvers on the unit and in the room where the furnace is installed Must be open and unob structed to provide combustion air Burners Must be inspected for rust dirt or signs of wa ter Vent pipe Must be inspected for dirt signs of water damaged or sagging unsupported pipe or disconnected joints Unit appearance Must be inspected for rust dirt signs of water burnt or damaged wires or components Blower access door Must be properly in place and pro vide a seal between the return air and the room where the furnace is installed Return air duct Must be properly attached and provide an airtight seal to the unit Operating performance Unit must be observed during operation to monitor proper performance of the unit and the vent system Combustion gases Flue products must be analyzed and compared to the unit specifications Problems detected during the inspection may make it necessary to temporarily shut down the furnace until the items can be repaired or replaced Pay attention to your furnace Situations can arise be tween annual furnac
10. per setting 3 Replace any blown fuses or reset circuit breakers Investigate reason for blown fuses or tripped break ers 4 Make sure gas valve is in ON position 5 Air filter should not be plugged limiting air flow 6 Is gas turned on at meter 7 Is manual main shut off valve open Safety Precautions If you discover any of the following shut down your unit and contact an independent Lennox dealer for an inspection by a qualified technician e If you repeatedly hear any new or unfamiliar sounds while your unit is operating there may be a problem For example poorly performing burners can produce unfamiliar noises If you smell any unusual odors your unit may be oper ating improperly For example units can give off unfa miliar odors if components are required to operate in abnormal conditions Look for visible signs of a malfunctioning unit Exam ples include unusual amounts of condensate on win dows inside your house visibly burnt components or unusual dirt or rust accumulations on the vent pipe or in the unit e If you experience headache nausea fatigue or dizzi ness the cause could be exposure to carbon monox ide gas This is often misdiagnosed as the flu because symptoms are similar If you suffer from flu like symp toms that are exaggerated at home but seem to sub side while you are away from the house exposure to carbon monoxide could be the cause Your vigilance may pay off in early detecti
11. s of debris Remove any ob structions Inspect furnace venting system to make sure it is in place physically sound and without holes corrosion or block age Vent connector must be in correct position sloped upward and be physically sound without holes or exces sive corrosion Inspect furnace return air duct connection to ensure duct is sealed to the furnace and terminates outside the space containing the furnace Inspect the physical support of the furnace to guarantee that it is sound without sagging cracks or gaps around base and it maintains seal between base and support Inspect and clean the condensate traps and drain Blower Check and clean blower wheel for any debris Blower mo tor is pre lubricated for extended bearing life No further lubrication is needed Page 5 Burner Flame Burner Flame Start burner and allow to operate for a few minutes to establish normal burning conditions Check burner flame by observation Flame should be predomi nantly blue in color and strong in appearance A CAUTION Periodically look through the flame sight glass to check the burner flame Contact your Lennox dealer for a periodic unit inspection by a qualified service technician Service Reminders Call your Lennox service technician if unit is inoperative Before calling always check the following to be sure ser vice is required 1 Check that electrical disconnect switches are ON 2 Check room thermostat for pro
12. vice or mainte nance turn the electrical power to unit OFF at dis connect switch A IMPORTANT Any additions changes or conversions required in order for the appliance to satisfactorily meet the ap plication needs must be made by a Lennox service technician using factory specified and approved parts Important Directions 1 Keep the furnace area clear and free of combustible material gasoline and other flammable vapors and liquids If installed in an insulated area furnace must be kept free of insulating material Insulating material may be combustible 2 DO NOT obstruct air flow to unit Unit must receive an unobstructed flow of combustion and ventilat ing air 3 DO NOT store chlorine or fluorine products near unit or introduce these products into the combustion air These products can cause furnace corrosion 4 DO NOT draw the return air from a room where another gas appliance ie a water heater is installed Even though this furnace draws its com bustion air from outside of the structure other gas appliances that share a utility room may not When return air is drawn from a room a negative pressure is created in the room If a gas appliance is operating in a room with negative pressure the flue products can be pulled back down the vent pipe and into the room This reverse flow of the flue gas may result in incomplete combustion and the formation of carbon monoxide gas This toxic gas might then b
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