31
INSTALLATION
Block diagram 3: Circuit with thermal modules with their own two-way valve, connected in cascade. Primary system with
system circulator.
SE
V1
Depending
EAF
EAF
PB
PI
P2
V2
S2
PR
P3
V3
M
S3
UAC
SB
M
P
ZM
PS
SS
PS
System circulator
PB
Storage cylinder circulator
PR
DHW circulation pump
PI
System circulator (high temperature zone)
P2
Zone 2 circulator (low temperature)
P3
Zone 3 circulator (low temperature)
S2
Zone 2 sensor
S3
Zone 3 sensor
SB
Boiler sensor
SE
Outdoor sensor
SS
Primary sensor
V1
Two-way valve (accessory)
V2
Mixer valve zone 2
V3
Mixer valve zone 3
ZM
Electronic device for zone management (accessory)
EAF
Domestic cold water inlet
UAC
Domestic hot water outlet
