331
HC4695
HS4695
L4695
N4695
NT4695
AM5875HD4695
BUS
System with two circulation pumps
The system shown requires two circulation pumps that serve two dierent zone groups
controlled by their own solenoid valves. The rst group pump is managed by a dedicated
actuator congured in zone 00 with progressive number equal to 1 (N=1). Also the two
valves that control ZONE1 and ZONE2 are managed by their own actuators. The circulation
pump will remain active until at least one of the two valves remains open and will stop
when both valves are closed.
Legend
1. zone 1 and 2 circulation pump
2. pump actuator
3. zone 3 and 4 circulation pump
4. pump actuator
5. zone 1 solenoid valve
6. zone 1 actuator
7. zone 2 solenoid valve
8. zone 2 actuator
9. zone 3 solenoid valve
10. actuator zone 3
11. zone 4 solenoid valve
12. actuator zone 4
ZONE 1
ZONE 2
ZONE 3
ZONE 4
The second group is similar to the rst one, but the actuator controlling the pump
of zones 3 and 4 is congured in zone 00 with progressive number equal to 2 (N=2).
Although belonging to the same system, the two pump/solenoid valve groups are totally
independent from each other (see also actuator conguration).
4-zone central unit
MQ00178-c-EN 29/04/2014
To Next Page
Loading...
