EVAPCO eco-Air Series, Руководство пользователя

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27
Controller User Manual
Table 14
A description of the increase and decrease timer parameters.
The temperature switch points set a minimum temperature at which the precooling system stages may become active. Note that this
setting is not used for freeze protection but is instead intended to prevent the precooling system from operating during
periods of the year when evaporative cooling is not required.
Parameter Description Default
Stage 1-4 The minimum temperature above which the associated stage of
the precooling system may activate. 0°F
Table 15
The stage switch point parameters.
Due to the orientation and low water usage of precooling systems equipped with adiabatic pads, it may take several minutes for the
precooling system to become fully effective. To prevent the precooling system from cycling during short periods of time, a minimum
run time for the precooling system may be set. Once enabled, the precooling system will remain on until the minimum run time for
the applicable stage is satisfied.
Parameter Description Default
Enable Stage On
Time
Enables or disables the stage minimum on timers. Note for
spray systems, the parameter should be disabled or lower
the duration of the minimum on timers.
Enabled
Stage 1-4 The minimum amount of time that the precooling stage remains
on once activated. 1200 seconds
Table 16
Figure 34
Various modes of operation triggers
The pre - cooling stage on time parameters.