Fan Control - ABB FBVi-2U4-4T User Manual

FAN CONTROL

Parallel Variable Fan Speed Option
The variable fan speed will be controlled by modulating
heating mode only. As more heating is required, the fan speed will
increases, the variable fan command will increase from
maxFanSpeed (A238)
Series Variable Fan Speed Option
The variable fan speed will be controlled by modulating AO 15 (default 0
the fan will run at a slower speed. As the heating demand increases, the variable fan command will
increase from minFanSpeed (A237)
variable fan command will increase from
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setpoint.
to the maxFanSpeed
minFanSpeed (A237) to maxFanSpeed (A238).
FBVI-2U4-4T Contr
FBVi-2U4-4T |
(default 0 ... 10 Vdc). The fan will run in
AO 15
increase. As the heating demand
minFanSpeed (A237) setpoint to the
... 10 Vdc). In deadband mode,
(A238). As the cooling demand increases, the
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