Lennox International Inc. 12GCS Air Conditioner User Manual
Contents
1. LIRR USER S INFORMATION MANUAL 1998 Lennox Industries Inc Dallas Texas USA m 10GCS amp 12GCS SERIES GAS ELECTRIC PACKAGED UNITS TE Technical Publications RETAIN THESE INSTRUCTIONS E FOR FUTURE REFERENCE AER Mk AWARNING If the information in this manual is not followed exactly a fire or explosion may result causing property damage cig ter personal injury or death 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 ap e Do not touch any electrical switch do not pliance use any phone in your building Installation and service must be e Immediately call your gas supplier from a performed by a qualified installer neighbor s phone Follow the gas supplier s service agency or the gas supplier instructions e If you cannot reach your gas supplier call the fire department Page 1 Parts Arrangement CONDENSER FAN CONDENSER COIL N Wi 4 Pa MOTOR HEAT EXCHANGER ASSEMBLY COMPRESSOR GAS PRESSURE SWITCH MANIFOLD BURNER BOX COMBUSTION AIR BLOWER GAS VALVE CONTROL BOX SECTION FIGURE 1 A IMPORTANT Product contains fiberglass wool Any additions changes or conversions required in or Disturbing the insulation in this product during installation mainte2. e the burner the heat exchanger and flue for any corrosion or soot accu mulation If any corrosion or soot accumulation is found the burner the heat exchangers and the flue may have to be cleaned The technician should also check the burner and controls for proper operation Vent Outlet Visually inspect vent outlet periodically to prevent excessive buildup of soot and dirt If necessary clean the vent outlet to maintain unobstructed discharge of the flue products Burner Flame The burner flame is not adjustable however the flame should be inspected at the beginning of each heating sea son and burners should be cleaned if necessary Burner flame should be blue when burning natural gas Venting System Inspection Annually before heating season inspect furnace venting system vent cap heat exchanger and burners for corro sion deterioration or deposits of debris Remove any ob structions Contact your Lennox dealer for a periodic unit inspection by a qualified service technician Rollout Safety Switch Your gas electric unit is equipped with a roll out safety switch which shuts off the gas supply to the furnace in case the heat exchanger becomes blocked If the heating section of the unit fails to operate due to the functioning of this safety switch DO NOT attempt to place the unit into operation Contact a qualified service technician SERVICE REMINDER Call your service technician if unit is inoperative Before ca
3. lling always check the following to be sure service is re quired 1 Check that electrical disconnect switches are ON 2 Check room thermostat for proper setting 3 Replace any blown fuses or reset circuit breakers 4 Gas valve should be ON 5 Air filter should not be plugged limiting air flow 6 Is gas turned on at meter 7 ls manual main shut off valve open To keep your Lennox gas heating system in peak operating condition year after year contact your independent Lennox dealer about a planned service program Page 4
4. nance 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 Important Directions To reduce exposure to this substance or for further Keep th df bustibl terial information consult material safety data sheets CSP Me area cigan ale Thee OrCOMPUSIDS MALENA Jaso available from address shown below or contact your line and other flammable vapors and liquids The flow of com supervisor bustion and ventilation air must not be obstructed from enter Lennox Industries Inc ing the furnace or condenser coil Do not permit overhanding P O Box 799900 structures or shrubs to obstruct condenser fan discharge Dallas TX 75379 9900 combustion air inlet or vent outlet der for the applicnace to satisfactorily meet the ap plication needs must be made by a Lennox service technicain using factory specified and approved parts Page 2 Heating Start Up FOR YOUR SAFETY READ BEFORE LIGHTING 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 Electric shock hazard Can cause injury or death Do not use this furnace if any part has been under water Immediately call a qualified service technician to in spect the furnace and to replace any part of the co
5. ntrol system and any gas control which has been under water Danger of explosion Can cause injury or product or property damage 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 Danger of explosion and fire Can cause injury or product or property damage You must follow these instructions exactly Electric shock hazard Can cause injury or death Before attempting to perform any service or maintenance turn the electrical power to unit OFF at disconnect switch es Unit may have multiple power supplies To place the unit into heating operation This unit does not have a pilot It is equipped with an ignition system which automatically lights the burner Do not try to light by hand Gas Valve Operation Figures 3 and 4 1 STOP Read the safety information at the beginning of this section 2 Set thermostat to lowest setting See figure 2 THERMOSTATS wet j 4098 2 25 30 Wana CD FIGURE 2 3 4 5 6 N 1 9 10 11 12 Page 3 Turn off all electrical power to unit This unit is equipped with an ignition device which au tomatically lights the pilot Do not try to light the pilot by hand Remove burner compartment access panel Honeywell VR8205 Gas Valve Turn knob on gas valve clockwise amp to OFF Refer to figure 3 Robert
6. r coil compartment attached to side of the unit drain pan TABLE 1 UNIT FILTER SIZES GCS26 UNIT MODEL FILTER SIZE 024 030 036 24 in X 25 in 048 060 30 in X 30 in Maintenance Normal Maintenance Periodic inspection and maintenance normally consists of changing or cleaning filters and under some conditions cleaning the main burners A WARNING Disconnect power before servicing unit A WARNING Improper installation adjustment alteration service or maintenance can cause property damage person al injury or loss of life Installation and service must be performed by a qualified installer service agency or the gas supplier Motors Indoor outdoor fan and vent motors are permanently lubricated and require no maintenance Outdoor Coil Dirt and debris should not be allowed to accumulate on the outdoor coil surface or other parts in the air circuit Clean the coild when necessary Use a brush vacuum cleaner attach ment or other suitable means If water is used to clean the coil be sure the power to unit is shut off prior to cleaning NOTE Care should be used when cleaning the coil so that the coil fins are not damaged Do not permit overhanging structures or shrubs to block the hot condenser air discharge Heating System Inspection The owner is responsible for ensuring that a qualified ser vice technician inspects the entire heating portion of the unit annually This inspection should includ
7. shaw 7200 Gas Valve Depressleverongas control and move to OFF and release Donotforce Refer to figure 4 HONEYWELL VR8205 SERIES GAS VALVE GAS VALVE SELECTOR ARM IN OFF POSITION FIGURE 4 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 Honeywell VR8205 Gas Valve Turn knob on gas valve counterclockwise to ON Robertshaw 7200 Gas Valve Depress lever on gas control and move to ON and release Replace the access panel Turn on all electrical power to unit Set thermostat to desired setting If the appliance still will not operate follow the instruc tions To Turn Off Gas To Unit and call your service technician or gas supplier To Turn Off Gas To Unit 1 Set thermostat to lowest setting 2 Turnoffall electrical power to unit if service is to be per formed 3 Remove burner compartment access panel 4 Honeywell VR8205 Gas Valves Turn knob on gas valve clockwiseg to OFF Do not force Robertshaw 7200 Gas Valve Push in gas control le ver move to OFF and release 5 Replace access panel Filters are not supplied Inspect the filters once a month and replace or clean them as necessary DO NOT replace a permanent type filter with a disposable filter Unit is equipped with an internal filter clip which is located in indoo
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