PRODUCT DESIGN
74
C
OOLING
M
ODE
The normal operational sequence in cooling mode is as fol-
lows:
•
R and Y thermostat contacts close, initiating a call for
cool.
•
Integrated control module performs safety circuit checks.
•
Outdoor fan and compressor are energized.
•
Circulator blower is energized on cool speed following a
fixed five second on delay. Electronic air cleaner termi-
nals are energized with circulator blower.
•
Furnace circulator blower and outdoor cooling unit run,
integrated control module monitors safety circuits con-
tinuously.
•
R and Y thermostat contacts open, completing the call
for cool.
•
Outdoor fan and compressor are de-energized.
•
Circulator blower is de-energized following a fixed forty
five second cool off delay period. Electronic air cleaner
terminals are de-energized.
•
Furnace awaits the next call from thermostat.
F
AN
O
NLY
M
ODE
The normal operational sequence in fan only mode is as
follows:
•
R and G thermostat contacts close, initiating a call for
fan.
•
Integrated control module performs safety circuit
checks.
•
Circulator blower is energized on low heat speed. Elec-
tronic air cleaner terminals are energized.
•
Circulator blower runs, integrated control module moni-
tors safety circuits continuously.
•
R and G thermostat contacts open, completing the call
for fan.
•
Circulator blower is de-energized. Electronic air cleaner
terminals are de-energized.
•
Furnace awaits the next call from thermostat.