Nordmann Engineering AT4 D SPA Display, Руководство по обслуживанию

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4.3 On/Off hysteresis of the supply and the exhaust fan (2-fan operation)
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
35 36 37 38 39 40 41 42 43 44 45
Actual temperature in °C
Exhaust Air
Supply Air
On
Off
Temperature dif
ference to setpoint in °C
Supply
Air
Exhaust
Air
Setpoint
-5 5
40 °C
-4 4
-3 3
-2 2
-1 1
0 0
1 -1
2 -2
3 -3
4 -4
5 -5
Example with setpoint value 40°C:
Hysteresis Exhaust fan 4°C: The exhaust fan switches off if the temperature is 2 °C below the setpoint value and
switches on if the temperature is 2 °C above the setpoint value.
Hysteresis supply fan 2 °C: The supply fan switches off if the temperature is 1 °C below the setpoint value and switches
on if the temperature is 1 °C above the setpoint value.
Note : If the supply fan is controlled with the “RLS” option de-
pendent on the heating voltage (supply fan is running, when the
heating voltage contactor is switched on) all software settings
of the supply fan are without function .
In order to achieve an optimum steam formation in the steam
bath cabin when operating the Nodmann AT4 D with a supply
and a exhaust fan (2-fan mode) the ON and Off switching points
can be indiviually set with the hysteresis value in °C (steam bath
operation) or %rh (caldarium operation). The fans are switched off
when the temperature/humidity drops below the septpoint value
by the half of the set hysteresis value and are switched on when
the temperature/humidity exceeds the setpoint value by the half
of the set hysteresis value.