Zone Valves - Ariston ecoCOMBI 27 MFFI Installation And Servicing Instructions

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 terminal board
(indicated in the "E
LECTRICAL
By way of example, two possible types of systems would be:
1. System with 2 valves with independent regulation of the zones (day and night).
2. 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:
CR = remote control
VZ1,2 = zone valve 1 and 2
TA = room thermostat or timer-thermostat
= radiators
F,N = electrical connection (live and neutral)
RL = 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
C " section).
ONNECTION
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