Ariston ACO 32 MFFI Installations- und Wartungsanweisungen - Seite 38

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4. ZONE VALVES

The boiler is capable of managing a heating system that uses zone

valves. The electrical connection of these valves is carried out by

means of the appropriate ter minal board (indicated in the

" section).

LECTRICAL

ONNECTION

By way of example, two possible types of systems would be:

System with 2 valves with independent regulation of the zones

(day and night).

System with 1 valve (regulation of the night zone subordinated

to that of the day).

A possible set-up for the first type of system is as follows:

= remote control

VZ1,2

= zone valve 1 and 2

= room thermostat or timer-thermostat

= radiators

F,N

= electrical connection (live and neutral)

= relay

A possible set-up for the system with a single zone valve is as

follows:

This set-up is simpler and more economical because it does not

involve the use of the special relay. The night zone, however, may

only be heated during the time periods in which the remote control

timer gives consent to the heating of the day zone. Example:

•

day zone programming (remote control): 8:00 - 22:00

•

night zone programming (timer-thermostat): 20:00 - 22:00