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Electrical connections
8.5 one thermostat
The zone thermostat (to be supplied separately: use the
Manufacturer's accessory or equivalent) can be connected
in three different ways. The choice of which one to use
depends on the type of application.
For parameter settings, see installer keyboard interface
manual (menu - 6 Room thermostat setting)
Method A
One zone system with zone thermostat managing the unit’s
ON/OFF and mode change.
RT1
POWER
IN
CL
HT
COM
CN61
CN63
CN31
CN66
CL
COM
HT
Method B
One zone system with zone thermostat managing only ON/
OFF, user interface managing the unit's mode change.
POWER
IN
RT1
HT
COM
CN61
CN63
CN31
CN66
COM
HT
In the presence of a zone thermostat, the HMI must be
used to control the water supply temperature. It is not
possible to select air temperature control using the HMI
air probe.
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