58
Contact humidistat
For area cooling systems (e.g. underfloor heating cir-
cuit, chilled ceiling), a contact humidistat (accessories)
is required.
■
Installation inside the room to be cooled at the cool-
ing water flow: Remove thermal insulation if neces-
sary.
■
If several rooms with different relative humidity levels
are part of the cooling circuit, fit and connect several
contact humidistats in series:
Design the switching contacts as N/C contacts.
Systems without external buffer cylinder
Heating/cooling circuits 1 and 2:
■
Use a 24 V contact humidistat.
■
Electrical connection in the extra low voltage (ELV)
terminal area < 42 V:
–
Heating/cooling circuit 1: Lower luster terminal, ter-
minals 1 and 2
–
Heating/cooling circuit 2 (only for type ...2C): Lower
luster terminal, terminals 3 and 4
Systems with external buffer cylinder
Heating/cooling circuits 1, 2, 3 and 4:
■
Use 230 V~ contact humidistat.
■
Connect to respective mixer extension kit of the
heating/cooling circuit (ADIO electronics module).
Operation without outdoor unit
The indoor unit can be operated without the outdoor
unit, e.g. for screed drying. In this instance, room heat-
ing is provided by the installed booster heaters:
■
Instantaneous heating water heater integrated into
the indoor unit
■
External heat generator, if installed
Hydraulic connections
Hydraulic connection of the indoor unit (cont.)
6222080
Installation
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