Installation manual

In some types of system one or more water circulation pumps must be
commanded, as well as commanding the zone valves.
This control is not necessary in the following cases:
• in systems where the pump is always working (thanks to hydraulic water
circulation systems or because there are three-way valves);
• in systems where the pump is managed automatically (i.e. it starts by
itself when water is required, it stops by itself when all the valves are
closed);
• in systems without pump (e.g. to control air conditioners or electric
heating).
The pump management is thus linked to the type of system made and in
particular to the number of circulation pumps and solenoid valves used to
control the single zone. Principally one can identify two types of solenoid
valve: with limit switch and without limit switch.
SINGLE CIRCULATION PUMP
In this case the pump is managed by a dedicated actuator and thus the
actuator contact, confi gured in zone 00, must be connected to the circulation
pump (also see actuator confi guration).
ART.F430/2
1
2
34
C1 C2
123 4
ART.F430/2
1
2
34
C1 C2
123 4
ART.F430/2
1
2
34
C1 C2
123 4
1
3
4
5
2
ZONE 1
ZONE 2
BUS
6
LEGEND
1 - circulation pump
2 – pump actuator
3 – solenoid valve zone 1
4 – actuator zone 1
5 – solenoid valve zone 2
6 – actuator zone 2
29
TECHNICAL FEATURES
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