17
EXPERT 64+, rev.12
EXPERT 64+
4.6. Relative Humidity (RH)
Control
The controller offers different ways to com-
pensate for high and low relative humidity
(RH) levels in the barn. This section shows
how to enable the desired RH compensation
functions.
1. RH Compensation on the Min Ventila-
tion Run Time:
The humidity level can be
decreased by increasing the fans’ running
time (On Time) within the minimum ventila-
tion cycles. The fans’ running time increases
gradually as the house’s humidity level
exceeds the humidity set point. The entire
compensated running time is reached when
the humidity level exceeds the RH set point
by 10%.
RH Comp. on Minimum
Ventilation Cycles
RH Level
(%)
10%
RH Set Point
Maximum
On Time
Regular
On Time
Min Vent.
Run Time
Time added
2. RH Compensation with the Heating Out-
puts:
The controller can compensate for high
humidity levels by activating the heaters in
timer mode. As the RH level increases, the
controller increases the
“On Time”
portion
of the heating timer to compensate for the
change. The maximum compensated heating
“On Time”
is reached when the RH level is
10% above the RH Set Point.
RH Comp. with
Heating Outputs
RH Level
(%)
10%
RH Set Point
Maximum
On Time
Minimum
On Time
Off Time
On Time of
the Heating
Timer
The RH heat timer is composed of an
“On
Time”
and of a
“Cycle Time”
. The heaters run
during the
“On Time”
and then stop until the
end of the
“Cycle Time”
. The
“On Time”
por-
tion of this cycle increases as the RH level
increases.
ON
OFF
Output
Status
RH Heat Timer
Time
ON Time
Cycle
Time
Summary of Contents for EXPERT 64 Plus
Page 1: ...EXPERT 64 Temperature Controller User s manual...
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Page 76: ...M 890 00077 rev 12 REV 07...
