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8.2.3
Lower limit
There is also an absolute lower limit for dehumidifier operation; it is managed according to a step whose position on the room
temperature axis depends on the presence or absence of resources for post-heating, if any.
If there are no heat resources available (heaters or hot water coil), the lower limit step refers to the cooling setpoint, as shown
in the following figure:
If there are heating resources available, the lower limit step refers to the heating setpoint, as shown in the following figure:
The cooling setpoint and heating setpoint parameters are in the "Setpoint" menu.
The heating and cooling differential parameters are in the "Regulations" menu, which can be accessed by entering the
"Service" password.
For the default values, see the parameters table.
Disabling occurs after 60 seconds (this value cannot be changed) if heating resources are present (if, therefore, post-heating is
active), otherwise it is immediate.
Dehumidification continues as normal when the room temperature value rises above the "cooling setpoint" or "heating setpoint"
parameter value.
Version 38
Dehumidify
ON
P20.18 Differential
Figure 8-3: cold only unit dehumidification lower limit graph.
Dehumidify
ON
P20.19 Differential
Figure 8-4: lower dehumidification limit graph for units with heat resources.
T
(°C)
P50.01
ambient
T
(°C)
P50.02
ambient
148
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