Riello TAU Unit 50 Installation And Maintenance Manual page 90

CONFIGURATION OF CASCADED THERMAL UNITS
ZONE MANAGEMENT ELECTRONIC DEVICE
ZM
15
N
14
13
12 L
11 L
10 N
9
L
8
7
6
5
4
3
2
ZM Zone management electronic device
L Live
N Neutral
Earth/ground
P2 Zone 2 circulator (low temperature)
V2 Mixer valve zone 2
S2 Zone 2 sensor
TA Room thermostat
BUS 1 Managing / Zones Bus
P2
M V2
managing
BUS 1
terminals
7 e 8
S2
TA
90