Lennox CHA16-024, Service Manual

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TABLE OF CONTENTS
GENERAL 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS CHA16 3 . . . . . . . . . . . . . . . . . .
SPECIFICATIONS CHP16 4 . . . . . . . . . . . . . . . . .
SPECIFICATIONS CHP20 5 . . . . . . . . . . . . . . . . . .
OPTIONAL ACCESSORIES CHA/CHP16 6 . . . .
OPTIONAL ACCESSORIES CHP20 7 . . . . . . . . .
ELECTRICAL DATA CHA16 8 . . . . . . . . . . . . . . . .
ELECTRICAL DATA CHP16/20 9 . . . . . . . . . . . . .
BLOWER DATA CHA16 10 . . . . . . . . . . . . . . . . . . . .
BLOWER DATA CHP16/20 13 . . . . . . . . . . . . . . . . .
ACCESSORIES BLOWER DATA 16 . . . . . . . . . . . .
I APPLICATION 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
II UNIT COMPONENETS 18 . . . . . . . . . . . . . . . . . . . . . .
Control Box 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling Components 22 . . . . . . . . . . . . . . . . . . . . . . .
Condenser Fan and Indoor Blower 27 . . . . . . . . . . .
III OPTIONAL ELECTRIC HEAT 28 . . . . . . . . . . . . . . . .
IV PLACEMENT AND INSTALLATION 43 . . . . . . . . . . .
V ELECTRICAL CONNECTIONS 43 . . . . . . . . . . . . . . .
VI START UP 43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VII COOLING SYSTEM SERVICE CHECKS 43 . . . . . .
VIII HEATING SYSTEM SERVICE CHECKS 44 . . . . . .
IX INDOOR BLOWER OPERATION 44 . . . . . . . . . . . . .
X MAINTENANCE 45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
XI ACCESSORIES 46 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
XII WIRING AND OPERATION SEQUENCE 52 . . . . . .
CAUTION
Electrostatic discharge can affect electronic
components. Take precautions during unit
installation and service to protect the unit's elecĆ
tronic controls. Precautions will help to avoid
control exposure to electrostatic discharge by
putting the unit , the control and the technician at
the same electrostatic potential. Neutralize elecĆ
trostatic charge by touching hand and all tools on
an unpainted unit surface, such as the blower
deck, before performing any service procedure.
ELECTROSTATIC DISCHARGE (ESD)
Precautions and Procedures