32
INSTALLATION
2.7.7
Electrical power connections Block
diagram 3
MANAGING CONNECTIONS
101 102 103 104 105 106 107 108 109 110 111 112
101 102 103 104 105 106 107 108 109 110 111 112
101 102 103 104 105 106 107 108 109 110 111 112
MO2
SYSTEM PUMP
L
N
L
N
L
N
CH PUMP
DHW P.
AVAIL.
PI
PS
PB
L
N
PS
System circulator
PI
System circulator (high temperature zone)
PB
Storage cylinder circulator
DEPENDING CONNECTIONS
(only if the depending zone is connected)
MO2
ZONE PUMP
L
L
N
N
L
MIX VALVE
P2
V2
113 114 115 116 117 118
113 114 115 116 117 118
CLOSE
OPEN
113 114 115 116 117 118
P2
Zone pump 2
V2
Zone Mix Valve 2 (116-117 close; 117-118 open)
ACCESSORY CONNECTIONS FOR ADDITIONAL ZONE
SAFETY
THERMOSTAT
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
ROOM
THERMOSTAT
FLOW
SENSOR
P3
V3
V3
BUS
MIX VALVE
PUMP
L
L L
N
N L
N
P3
P3
Zone 3 circulator (low temperature) (12-13-14)
V3
Mixer valve zone 3 (9-10 closing; 10-11 opening)
2.7.8
Sensor connections Block diagram 3
MANAGING CONNECTIONS
1
2 3
4
9 10
11 12 13 14
5
6
7
8
MO1
INP. 0-10 V
1 2 3 4 5 6
1 2 3 4 5 6
ROOM TH.
MODBUS
7 8 9 10
7 8 9 10
T_DHW_ST.
T_SYSTEM
11 12 13 14
11 12 13 14
T_OUTD.
T_SYST_2
TA
SB SS
SE
TA
Room thermostat
SB
Boiler sensor
SS
Primary probe
SE
Outdoor sensor
DEPENDING CONNECTIONS
(only if the depending zone is connected)
23 24 25 26 27 28
M2D1
23 24 25 26 27 28
23 24 25 26 27 28
ZONE RT
T. FL. ZONE
OUT. 0-10V
S2
TA
TA
Zone Thermostat
S2
Zone 2 sensor
ACCESSORY CONNECTIONS FOR ADDITIONAL ZONE
SAFETY
THERMOSTAT
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
ROOM
THERMOSTAT
FLOW
SENSOR
S3
BUS
MIX VALVE
PUMP
L
L L
N
N L
N
S3
S3
Zone 3 sensor