Control Logic; Ventilation Logic - AERMEC UFB W Manuel D'utilisation Et D'installation

37.

CONTROL LOGIC:

Thermostat control 0÷100 %
The figure below indicates the operation of the
fan in Automatic mode (selector in the AUTO
position) depending on the proportional error.
100
38.

VENTILATION LOGIC

Thermostat-controlled ventilation
The choice of regulation by means of thermostat-
controlled ventilation (dip3 OFF) requires the
ventilation to be switched off when the desired
setpoint is reached.
Continuous ventilation
The selection of continuous ventilation is made
POSITION
The thermostat is off. It may however start again in Heat mode if the room temperature falls below 7°C and the water temperature is suitable
OFF
(Anti-freeze function).
AUTO
When the chosen setpoint is reached, the ventilation proceeds with the continuous minimum speed.
V1
In this position, the minimum ventilation speed V1 stays active regardless of the thermostat requests.
V2
In this position, the minimum ventilation speed V2 stays active regardless of the thermostat requests.
V3
In this position, the minimum ventilation speed V3 stays active regardless of the thermostat requests.
Aux
In this position, the continuous minimum ventilation speed stays active.
In manual mode (selector in position V1, V2, V3)
the fan uses On-Off cycles at the speed set by
means of the user interface.
3 °C
0÷100 % Thermostat
adjustement range
DEAD BAND
HEATING SETTING
with dip3, which must be set as ON. In practice,
continuous ventilation provides ventilation even
when the thermostat has met the chosen speed
This function is disabled when the machine does
not have a shut-off valve (dip1 OFF). In these
particular cases, the fan will always be managed
with thermostat logic.
Te dead band indicated in the figure can be 2°C
or 5°C depending on the setting made for dip7.
2.1 °C
Tamb [°C]
COOLING SET
The following table shows the fan speed activated
according to the position of the selector:
Operation
IUFBTY 1601 - 5495900_01 28