31
EN
6.12.2 Chrono-thermostat or Air Thermostat
The electrical connection of the chrono-thermostat or air ther-
mostat has already been described. When fitting the component
in the room where the readings are to be taken, follow the in-
structions provided on the packaging of the product itself.
6.12.3 EXAMPLE of use of the command/control de-
vice on some types of heating systems
KEY
M
System delivery
R
System return
CR
Remote control
SE
External temperature sensor
TA
Air thermostat for boiler activation
TZ1÷TZ3 Air thermostat for the zone
VZ1-VZ3 Zone valves
RL1-RL3 Zone relays
P1-P3
Zone pump
TSB
Low temperature safety thermostat
ONE DIRECT ZONE system , external sensor and air thermo-
stat.
R
M
SE
TA
CR
Fig. 34
MULTI ZONE system - with zone valve, air thermostat and ex-
ternal sensor.
TA
TZ1
VZ1
VZ2
VZ3
TZ2
TZ3
SE
R
M
Fig. 35
m
CAUTION
Set the parameter "tS 17 = DELAY SYSTEM PUMP AC-
TIVATION to allow the opening of zone valve Vz.
MULTI ZONE system - with pump, air thermostat and external
sensor.
TA
SE
TZ2
TZ3
TZ1
P3
RL1
SP
RL2
RL3
P2
P1
R
M
Fig. 36
6.13
Refilling or emptying
Before carrying out the operations described below, make sure
that the main system switch is set to "ON" in order for the dis-
play to show the pressure level in the system during refilling.
Make sure that the operating mode is set to "Stand-by";
if this is not
the case, press the button
y
for at least 1 second until this
mode has been selected.
ON
Fig. 37
6.13.1 REFILL operations
Remove the front panel:
– remove the two screws (1), pull the front panel (2) forwards
and release it from the top by lifting it.
1
2
Fig. 38
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