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Combo Output Module
Product Manual
©2017 INTERRA
51
PM131126001A
5.5.1.
FAN COIL – 2 PIPES
It is possible to configure the device to control 2
pipe system fan coils.
FAN COIL FUNCTION
The fan coil can be configured as heating, cooling
or heating/cooling.
-
Heating:
Only warm water is supplied centrally to the pipe
system. There is a heat exchanger and the valve
controls the flow of the warm water.
-
Cooling:
In this case, the valve controls the flow of the cold
water which is supplied centrally.
-
Heating/Cooling:
In this system only one water circuit is available for
heating and cooling. Depending on the central
system, warm or cold water is supplied to the pipe
system but the valve which controls the flow of this
water is unique.
When the Fan Coil Function is parameterized as
heating/cooling, a new communication object is
added (Heating/Cooling Change Over) which
defines the operating mode of the fan coil. With the
normal configuration, when this object takes the
value 0 the fan coil operates as cooling and when
the value is 1 as heating. However it is possible to
ch
ange this configuration via “Heating/Cooling
Pol.” parameter.