Munters comdry m170l, Руководство пользователя

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ComDry M160L
7.5 Functions
7.5.1 Process fan speed
To set fan speed you must have “one-star” access, see 6.8, Access the control system . The process fan speed can
be set to [Spd HIGH], [Spd NORM] or [Spd LOW]. The capacities and fan curves in section and are given
at HIGH speed. NORMAL speed will reduce the capacity slightly, while LOW speed gives approximately
50% capacity.
See 7.5.2, Process fan mode for how to set the fan parameters.
7.5.2 Process fan mode
There are three process fan modes:
Fan mode Description
[Fan ON] In [Fan ON] mode, the dehumidifier will run the process fan continuously, regardless of there is a
dehumidification need or not. This is the default mode.
[Fan INT]
(INTermittent)
In [Fan INT] (INTermittent) mode, the fan will stop when the desired humidity (Set Value minus Hysteresis)
is reached. If the humidity reading stays below the Set Value, the process fan will anyhow start after 30
minutes to let the built-in sensor more accurately sense the condition of the incoming process air. The
fan will run for a minute to produce a proper measurement. If the humidity is still below the Set Value,
the fan will stop again. This is repeated until the humidity reaches the Set Value, which will make the
dehumidification start again.
[Fan DEM] (on
DEMand)
In [Fan DEM] (on DEMand) mode, the fan will stop when the desired humidity (Set Value minus
Hysteresis) is reached. It will start again when the sensed humidity is equal to, or greater than the Set
Value. This gives in practice a control with greater hysteresis than “Fan INT”, depending on the following:
When the dehumidifier has reached the desired humidity level, it will shift to stand-by and stop the process
fan. After a while, internal machine heat will increase the temperature of the humidity sensor. This makes
the sensor reading even lower, i.e. the system functions as if there was a “negative hysteresis”. As a
result, a greater humidity load will be necessary to make the dehumidifier start compared with the “Fan
INT” mode.
7.5.3 Humidity control and units
The internal humidity/temperature sensor, “RH1” (located behind the process air filter), makes it possible
to set the control/presentation of the humidity to either Relative humidity (RH%), Dew point (Dp °C)
or absolute humidity (X gr/kg). Depending on unit system setting, SI for metric or IP for Imperial, the
readings will be shown in Celsius and g/kg, or Fahrenheit and grain/lb. All these settings are made in the
Functions menu.
190TEN-1098-D1404
Menus and parameters
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