2
INDEX
SHIPPING INSPECTION ...................................................................................................................................................... 4
REPLACEMENT PARTS ....................................................................................................................................................... 4
ORDERING PARTS .............................................................................................................................................................. 4
SAFETY INSTRUCTIONS ..................................................................................................................................................... 4
CODES AND REGULATIONS ............................................................................................................................................... 5
EPA REGULATIONS ............................................................................................................................................................ 5
N
ATIONAL CODES ............................................................................................................................................................... 5
MAJOR COMPONENTS ....................................................................................................................................................... 5
PRE-INSTALLATION CHECKS ............................................................................................................................................. 5
C
LEARANCES AND ACCESSIBILITY .......................................................................................................................................... 5
UNIT LOCATION .................................................................................................................................................................. 5
GROUND LEVEL PRE-INSTALLATION DETAILS............................................................................................................................ 6
R
OOF TOP PRE-INSTALLATION DETAILS ................................................................................................................................... 6
ROOF CURB INSTALLATIONS ONLY ......................................................................................................................................... 6
R
IGGING DETAILS ............................................................................................................................................................... 7
CIRCULATING AIR AND FILTERS ....................................................................................................................................... 7
AIR FLOW CONVERSION ...................................................................................................................................................... 7
DUCT WORK ..................................................................................................................................................................... 7
FILTERS ........................................................................................................................................................................... 7
PIPING ................................................................................................................................................................................. 8
CONDENSATE DRAIN ........................................................................................................................................................... 8
WIRING ................................................................................................................................................................................ 8
HIGH VOLTAGE WIRING....................................................................................................................................................... 8
LOW VOLTAGE WIRING ....................................................................................................................................................... 9
INTERNAL WIRING.............................................................................................................................................................. 9
STARTUP, ADJUSTMENTS, AND CHECKS ......................................................................................................................... 9
COOLING START-UP PROCEDURES ........................................................................................................................................ 9
HEAT PUMP START-UP PROCEDURE ...................................................................................................................................... 9
FINAL SYSTEM CHECKS ..................................................................................................................................................... 10
COMPONENTS .................................................................................................................................................................. 10
HEAT PUMP OPERATION ...................................................................................................................................................11
COOLING CYCLE .............................................................................................................................................................. 11
HEATING CYCLE ............................................................................................................................................................... 11
DEFROST CONTROL .......................................................................................................................................................... 11
AIR FLOW MEASUREMENT AND ADJUSTMENT ......................................................................................................................... 12
AIR FLOW ADJUSTMENTS FOR INDOOR BLOWER MOTOR ........................................................................................................ 12
EXPANSION VALVE (TXV) SYSTEM ....................................................................................................................................... 12
SYSTEM CHARGING HEATING MODE ..................................................................................................................................... 13
ELECTRICAL ADJUSTMENTS ........................................................................................................................................... 13
MAINTENANCE .................................................................................................................................................................. 14
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