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TABLE OF CONTENTS

IMPORTANT SAFETY INFORMATION ........................... 3

GAS SUPPLY & PIPING ................................................ 3
VENTING SYSTEM ....................................................... 4
CLEARANCES TO COMBUSTIBLES ............................ 4
SHUTTING DOWN THE FURNACE .............................. 4

GENERAL INFORMATION .............................................. 5

ABOUT THE FURNACE ................................................ 5
AIR FILTERS ................................................................. 5
THERMOSTAT .............................................................. 5
FURNACE IN A SMALL ROOM OR CLOSET ............... 5
SOURCES OF CORROSION ........................................ 5
WARRANTY INFORMATION ........................................ 5

MAINTENANCE INFORMATION ..................................... 6

BLOWER & FILTER ....................................................... 6
CONDENSATE DRAINAGE .......................................... 6
FURNACE & AIR DUCTS .............................................. 6
VENTING SYSTEM ....................................................... 6

TROUBLESHOOTING ..................................................... 6
STARTUP & SHUTDOWN ............................................... 7

STARTING THE FURNACE .......................................... 7
SHUTTING DOWN THE FURNACE .............................. 7

FURNACE COMPONENTS ............................................. 8

Summary of Contents for M7RL

Page 1: ...r use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do...

Page 2: ...INFORMATION 5 ABOUT THE FURNACE 5 AIR FILTERS 5 THERMOSTAT 5 FURNACE IN A SMALL ROOM OR CLOSET 5 SOURCES OF CORROSION 5 WARRANTY INFORMATION 5 MAINTENANCE INFORMATION 6 BLOWER FILTER 6 CONDENSATE DRAI...

Page 3: ...hazardous situation that if not avoided could result in personal injury or death CAUTION indicates a potentially hazardous situation that if not avoided may result in minor or moderate injury or prop...

Page 4: ...sdie wall around thevent andairintake pipe s aresealedtoprefent infiltrationofcombustionproductsintothebuilding Check that furnace vent and air intake terminal s are not obstructed in any way during a...

Page 5: ...with applicable local codes having jurisdiction Thermostat connections should be made according to the instructions supplied with the thermostat and the indoor equipment The thermostat should be mount...

Page 6: ...nt visual inspections of the furnace for obvious signs of deterioration The furnace should be sound without sagging cracks gaps etc around the base The return air duct connection s is secured and seal...

Page 7: ...valve outside the furnace 3 Turn electric to the furnace off 4 Open the door to the burner compartment 5 Set the gas valve ON OFF knob switch to the OFF position See Figure 2 for gas valve type and kn...

Page 8: ...rved FURNACE COMPONENTS Figure 3 M7RL M7TL Furnace Components Blower Assembly Inducer Assembly Single Stage Gas Valve Gas Manifold Burner Assembly ON OFF Switch Control Board Limit Switch Inline Drain...

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