CBV-2U4-3T(-N) |
Control Sequence Overview
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Primary Air Flow Reset Dehumidification
•
Local Dehumidification Sensor
If the local
(A258), the primary air flow setpoint will
modulate up to the
(A211), or maximum Flowrate setpoint. Dehumidification demand
calculation can be determined from point
(A79). If the
CBV-2U4-3T(-N)
is in
heat mode, the heat will stage on accordingly. If heating demand is greater than 95%, however, the
calculated
(A76) will be limited to 70%.
•
Remote Dehumidification Sensor
If the
CBV-2U4-3T(-N)
is a slave VAV box and another controller is master and has a relative humidity sensor,
users can write the dehumidification calculated demand to the
configured for remote dehumidification, this will calculate the Flowrate setpoint in the same manner as if it
had a local relative humidity sensor.
Calculated Flowrate Alarms
If the calculated Flowrate goes above or below the
setpoint, default 75 Flowrate, then a delay timer will be started
minutes. If the calculated Flowrate has not corrected before the time delay, an alarm will be generated.
Additionally, if there is a low Flowrate alarm condition
(A41) will be set to 4. In a high Flowrate
alarm condition
(A41) will be set to 8.
Summary of Contents for CBV-2U4-3T
Page 1: ... USER GUIDE MAN0139 rev 14 CBV 2U4 3T N ...
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