8.1 I/O Contacts
Inputs
Room temperature sensor
water supply temperature
sensor
contact failure
Outputs
contact on/off
contact heating
contact cooling
contact ventilation
capacity
Contact requirements: 230 V or 24VAC (no mix of both voltages), maximum 1A.
18
ntc4k7
ntc4k7
(only for water system)
potential
Closed contact fault, red LED on
free
potential
closes 5 seconds after heating contact or
free
cooling contact is closed
potential
closes at heat
free
demand
potential
closes on cooling
free
demand
potential
DX system:
free
Close simultaneously with contact on/off
Water system:
closes when the button continuous ventilation
is pressed.
0-10Vdc (capacity) becomes the maximum
output signal.
Heating and cooling are not released.
0-10Vdc
DX system:
depending on the capacity demand, the signal
becomes higher for both heating and cooling.
Water system:
- heating:
The capacity demand is determined by the
room temperature (equal to DX).
0-10V is released when there is a heat demand
and a water temperature higher than the
heating water temperature setpoint.
- cooling:
The capacity demand is determined by the
room temperature (equal to DX).
0-10V is released when there is a cooling
demand and a water temperature lower than
the cooling water temperature setpoint
Contact heating and
cooling have a common
common (connection)