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507350-06
8/2022
Supersedes 507350-05
FBR113270
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
Installation and service must be performed
by a qualified installer, service agency or the
gas supplier.
KG 024, 030, 036, 048, 060, 074
KG 092 SHOWN
READ ALL INSTRUCTIONS IN THIS MANUAL
AND RETAIN FOR FUTURE REFERENCE
WARNING
FIRE OR EXPLOSION HAZARD.
Failure to follow safety warnings exactly
could result in serious injury, death, or
property damage.
USER'S INFORMATION
(2, 2-1/2, 3, 4, 5, and 6 Tons)
KG 092, 102, 120, 150
(7-1/2, 8-1/2, 10 and 12-1/2 Tons)
KG 180, 210, 240, 300
(15, 17-1/2, 20 and 25 Tons)
ROOFTOP UNITS
KG 092 SHOWN
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Extinguish any open flames.
• Do not touch any electrical switch; do not use any
phone in your building.
• Leave the building immediately
• Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire
department.
MANUAL
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Table of Contents
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Summary of Contents for Lennox KG 024
- Page 1 MANUAL 507350-06 8/2022 Supersedes 507350-05 KG 024, 030, 036, 048, 060, 074 (2, 2-1/2, 3, 4, 5, and 6 Tons) KG 092, 102, 120, 150 (7-1/2, 8-1/2, 10 and 12-1/2 Tons) KG 180, 210, 240, 300 (15, 17-1/2, 20 and 25 Tons)
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Page 2: Condenser Coil
KG 024, 030, 036, 048, 060, 074 Parts Arrangement EVAPORATOR REFRIGERANT BLOWER TB1 LOW VOLTAGE COIL METERING DEVICE MOTOR FILTERS (4) CONDENSER TERMINAL BLOCK ECONOMIZER (OPTIONAL) BLOWER CONDENSER COIL CONDENSATE DRAIN COMBUSTION BURNERS AIR INDUCER GAS VALVE COMPRESSOR KG 092, 102, 120, & 150 Parts Arrangement... - Page 3 KG 180, 210, 240, 300 Parts Arrangement FILTERS INDOOR COIL (SIX - 24 X 24 X 2”) OUTDOOR FANS (3 FANS ON 180S, 210S UNITS ECONOMIZER 6 FANS ON 300S UNITS) DAMPERS (OPTIONAL) BLOWERS FILTER DRIERS CONDENSATE OUTDOOR COILS DRAIN (RIGHT COIL IS VERTICAL 180S &...
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Page 4: Unit Operation
supplier’s instructions. If you do not smell gas, go WARNING to the next step. Do not use this furnace if any part has been under water. HONEYWELL VR8215S GAS VALVE A flood-damaged furnace is extremely dangerous. Single-Stage MANIFOLD Attempts to use the furnace can result in fire or explosion. MANIFOLD PRESSURE PRESSURE... -
Page 5: Burner Flame
Burner Flame HONEYWELL VR8305Q SERIES GAS VALVE WARNING HIGH FIRE LOW FIRE ADJUSTMENT ADJUSTMENT MANIFOLD Danger of explosion and fire. Can cause PRESSURE injury or product or property damage. Periodically inspect burner flame to ensure proper unit operation. The primary air is permanently set for normal operation. The flame will be basically blue with some clear yellow INLET streaking in the end of the flame. -
Page 6: Vent Connector
Service HEAT EXCHANGER ASSEMBLY To maintain efficiency and longevity, your equipment 092-150 UNITS must be serviced yearly by a qualified service technician. Failure to provide proof of service can void warranty. HEAT CAUTION EXCHANGER TUBE Label all wires prior to disconnection when servicing controls. -
Page 7: Flame Sensor
Lubrication BURNER BOX ASSEMBLY All motors are lubricated at the factory. No further 024-074 UNITS lubrication is required. Blower shaft bearings are prelubricated. For extended bearing life, relubricate at least once every two years with a lithium base grease, such as Alvania 3 (Shell Oil), Chevron BRB2 (Standard Oil) or Regal AFB2 (Texas Oil). -
Page 8: Service Reminder
Combustion Air Inducer vent connector to their original location. Secure with retained screws. It is recommended that the A combustion air inducer proving switch checks combus- combustion air inducer gasket be replaced during tion air inducer operation before allowing power to the gas reassembly.