26
DEADBAND OPERATION - Controls one Heat and one Cool stage with
a three speed fan (see below).
The low speed fan for heat or cool is turned on when: The temperature
spread from the setpoint is equal to or greater than: the setpoint plus the
1st stage deadband (Setup Step 11, page 17). This 1st stage deadband
is adjustable from 1-6 degrees and the default is two degrees.
The medium speed fan for heat or cool is turned on when: The
temperature spread from the setpoint is equal to or greater than: the
setpoint plus the 1st stage deadband (Setup Step 11, page 17), plus the
2nd stage dead-band. This 2nd stage deadband is xed at one degree
and is not adjustable.
The high speed fan for heat or cool is turned on when: The temperature
spread from the setpoint is equal to or greater than: the setpoint plus
the 1st stage deadband (Setup Step 11, page 17), plus the 2nd stage
deadband, plus the 3rd stage deadband. This 3rd stage deadband is
xed at one degree and is not adjustable.
TEMPERATURE
DECREAS
NCREASE
Cool
SP
Heat
SP
Med-
speed
fan
W1
Med-
speed
fan
Y1+Y2
Heating
Cooling
Lo-
speed
fan
W1
Hi-
speed
fan
W1
Lo-
speed
fan
Y1
Hi-
speed
fan
Y1+Y2
DB3
1˚
DB2
1˚ 1˚ 1˚
DB1
1˚-6˚1˚- 6˚
DB1DB2 DB3
About Advanced Features & Operation
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