About Advanced Features & Operation
27
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 dead-band (Setup Step 11, page 17).
This 1st stage deadband is adjust-
able 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 fixed 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 fixed at one degree and is
not adjustable.
TEMPERATURE
DECREASE
INCREASE
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˚
DB1 DB2 DB3
