Riello Steel Pro Power 114-2 P Installation, Technical Assistance Service And System Management Manual page 28

INSTALLATION
Block diagram 2: Circuit with thermal modules with their own circulator, connected in cascade. Using the secondary sensor.
SE
PC Thermal module 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
Depending
PC
P
SS
ZM
V2
M
SC
V3
M
EAF
SE Outdoor sensor
SS Primary sensor
SC Secondary sensor
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
28
PB
PI
P2 S2
UAC
SB
P3 S3
EAF
PR