37
EXPERT WW rev.12
EXPERT WW
10. RELATIVE HUMIDITY
(RH) COMPENSATION
The controller offers different way to com-
pensate for high/low relative humidity (RH)
levels in the room. All compensation functions
are explained below. To use them, you must
enable each desired compensation function
in section 4.6.
1. High RH Comp. with the Heating Outputs:
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
2. High RH comp. with cool cells & mist out-
puts:
If RH levels are too high, the controller
can stop the misting output and/or cool cell
output. Theses outputs are disabled when
RH levels reach the respective
RH shutoff
limit
of each output.
3. Low RH comp. with mist outputs:
To com-
pensate for low RH levels, the controller can
activate the misting output in timer mode.
The misting output starts when RH levels
decrease below the
Low RH Set Point
.
1. Select:
Main menu
RH Comp*
* This menu is accessible if at least one RH compen-
sation function is enabled in section 4.6. In addition,
a password may be required to access this menu
(section 4.2).
RH Compensation
Use to navigate
RH Set Point
65 %
Heater Compensation
Min On Time
15 sec
Max On Time
45 sec
Cycle Time
300 sec
Mist on Low % Humidity
Low Set Point
Off %
On time
15 sec
Off Time
900 sec
Mist Shutoff
Off %
Cool Cell shutoff
Off %
2. Set the following parameters:
RH Set Point —
This is the humidity level
above which high RH compensation func-
tions start. Adjustable from 20 to 99% of
humidity (select
Off
to disable all high RH
comp functions).
Heater compensation
The timer used by heating outputs is made
of an
“On Time”
and of a
“Cycle Time”
. Heating
outputs run during the
“On Time”
then stop
until the end of the
“Cycle Time”
. The
“On
Time”
portion of this cycle increases as RH
levels increase.
Minimum & Maximum On Times —
Set the
minimum and maximum
“On Times”
of the
heating timer. The minimum
“On Time”
starts
being used when indoor humidity levels reach
the RH set point; the maximum
“On Time”
is
used when humidity levels are 10% above
the RH set point. *
This parameter is accessible
if RH compensation with heating outputs is enabled
in section 4.6.
Cycle Time: —
Set the
“Cycle Time”
of the
heating timer. *
This parameter is accessible if
RH compensation with heating outputs is enabled
in section 4.6.
Misting outputs on low humidity levels
*Accessible if RH comp. on Low RH levels is enabled
in section 4.6.
Low Set Point —
Set the humidity level
below which misting units start running in
timer mode or select
“Off”
to disable this
function.
On & Off Times —
Set the
“On Time”
and the
“Off Time”
of the misting timer.
Mist & Cool Cell Shutoff —
Set the humidity
level above which the misting output and/or
the cool cell output stops or select
Off
to dis-
able this function. *
This parameter is accessible
if the mist shutoff compensation and/or cool cell
shutoff option is enabled in sec. 4.6.
