M23740N6-03 01/10/07
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ELECTRIC RESISTANCES
The electric resistance operating mode is defined by the following parameters:
P27
ModeRes
= 0 integration element (ventilation forced at max.)
1 main element (manual or automatic ventilation)
P53
OutResType
= 1 single-phase
2 two-phase
3 0 – 10 volt
INTEGRATION
P01
P01
Set Point
ON
OFF
MAIN ELEMENT
P01
Set Point
ON
OFF
The water valve is opened when thermo-
regulation is demanded:
if the probe detects hot water, the resistors
automatically become an integration body.
On the contrary, if after
TimeValve
is over,
water temperature is not suitable, the valve
closes, the H2O alarm is not activated and the
resistors are not activated.
As soon as the probe detects that water
temperature >
MinH2oHeat,
resistors become
integration bodies and the valve opens.
In this mode, the water temperature alarm is
not managed.
SINGLE-PHASE
RESISTANCES
P01
Set Point
ON
OFF
TWO-PHASE
RESISTANCES
P01
Set Point
DEHUMIDIFICATION
The dehumidification control is managed by the network, which is an upwards system that uses one or more terminal units to
dehumidify.
When the
DeumiOn
network variable is switched on 1, the unit is forced into cooling mode, even when the temperature set is
met (100% opened valve and minimum ventilation speed).
This occurs to meet the humidity conditions decided by the network (detecting the relevant humidity by a room thermostat).
The dehumidification process shown by the display is stopped when the following occurs:
•
the
DeumiOn
variable is 0 (humidity conditions are met).
•
Temperature is below the
LowLimit
, value; therefore, the process can start again only if ambient temperature > set-
point Temp and if there is still a demand.
The dehumidification process can not start if:
•
The operation mode is the Heating mode.
•
The unit is OFF.
CONTROL
(FOR UNITS WITH 3 SPEED BOARD)
See ELECTRICAL CONNECTIONS section
