M
ANUAL
S
ETTINGS
Version: 1.0 (21-09-2005)
35
Table 3-2
Functions of the input
N
O
.
I
NPUT
SIGNAL
D
ESCRIPTION
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
N
O
.
O
UTPUT
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.
