MANUAL SETTINGS
Version: 1.0 (21-09-2005) 35
Table 3-2 Functions of the input
NO. INPUT SIGNAL DESCRIPTION
0 No function
1 Change-over input signal, heating/
cooling
If a signal is sent to the input, the unit will switch from
heating mode to cooling mode.
2 Release of unit by low-limit thermo-
stat
The fan will not switch on until hot water is supplied to
the unit, thus preventing cold air from being blown out.
3 Ventilation unit always on The ventilation unit keeps on running, even if the control-
ler is set to the night/standby mode.
4 Ventilation unit on or one speed
higher
The ventilation unit is switched on or, if already on, is set
to one speed higher.
5 Ventilation unit off The ventilation unit is switched off.
10 Summer setting (CC H) By making contact to the input, the unit’s temperature
control is switched off. The
+ and - keys will have no
function anymore – when they are pressed,
__ appears in
the display.
The fan speed can still be regulated and can be used in the
summertime to obtain cooling thanks to additional circu
-
lation. The display will read x.
11 External switching on and off The unit is switched on or off by making or breaking a
contact to the input.
Tabel 3-3 Functions of the outputs
NO. OUTPUT SIGNAL
0 no function
51 maximum filter life lapsed
52 freezing risk
53 general failure
54 freezing risk or general failure
55 heating demand
56 cooling demand
57 change-over output signal, heating/cooling
58 fan running
62 ventilation unit at speed 2
63 ventilation unit at speed 3
70 Only CC V: The fan is running. If the discharge temperature falls below 6°C, the contact will be bro-
ken and the fan will be switched off. If one or more ventilation units are connected, output O3 is
permanently set to function 70.
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