O137 3
INDEX
WARNINGS & GENERAL INFORMATION .............................................................................. 4, 5
CLEARANCES, LOCATION ..................................................................................................... 5, 6
VENTING...................................................................................................................................... 6
GAS PIPING TABLE................................................................................................................. 7, 8
CIRCULATING & RETURN AIR ............................................................................................ 8 - 10
ELECTRICAL SUPPLY, CONTROL VOLTAGE ................................................................... 10, 11
RATING THE FURNACE...................................................................................................... 11, 12
TIMING THE GAS METER......................................................................................................... 13
SAFETY CONTROLS........................................................................................................... 14, 15
CIRCULATING AIR FILTERS..................................................................................................... 15
SERVICE INSTRUCTIONS ........................................................................................................ 16
SEQUENCE OF OPERATION ................................................................................................... 17
REMOVING AN EXISTING APPLIANCE ................................................................................... 18
INSPECTING AND CLEANING THE HEAT EXCHANGER.................................................. 18, 19
COMBUSTION AIR .............................................................................................................. 19, 20
ILLUSTRATIONS ................................................................................................................ 21 - 23
BLOWER DELAY, HUMIDIFIER & EAC CONTROL .................................................................. 24
WIRING DIAGRAMS ............................................................................................................ 25, 26
LIGHTING INSTRUCTIONS....................................................................................................... 27
VENT TABLES .................................................................................................................... 28 - 45
THIS FURNACE CONTAINS ELECTRONIC COMPONENTS, WHICH REQUIRE A DEFINITE
GROUND. PROVISIONS ARE MADE FOR CONNECTION OF THE GROUND. IF THIS
PRODUCT IS NOT PERMANENTLY AND POSITIVELY GROUNDED NUMEROUS SERVICE
CALLS MAY RESULT. A DEDICATED GROUND FROM THE MAIN POWER SUPPLY OR AN
EARTH GROUND MUST BE PROVIDED.
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