Sime RVA 47.320 Manual Del Usuario página 42

3.4.3 Sequence management of up to 4 boilers for heating with external boiler and zone pumps
Hydraulic circuit
PPS BUS
BOILER 1
CALDAIA 1
KEY
SI
SB
SM
SR
SE
PI
Wiring diagram
KEY
SB Feeler of external boiler (QAZ21)
SM Cascade delivery temperature feeler (QAD21)
SR Cascade return temperature feeler (QAD21)
SE External temperature feeler (QAC31)
PI Installation pump
PB Boiler pump
PZ1-n Zone pumps
TA1-n Zone Room thermostat
RL1-n Zone relays (two exchange contacts)
RPI Installation pump relay
CR1-n Clean contacts
R1 536-Ohm-resistor
R2 562-Ohm-resistor
R3 604-Ohm-resistor
R4 649-Ohm-resistor
Scheda caldaia
Main PCB
ALBATROS
N
T
L
CALDAIA 1 BOILER 1
42
SE
BOILER 2 BOILER 4
CALDAIA 2 CALDAIA 3 BOILER 3 CALDAIA 4
Hydraulic separator
Feeler of external boiler (QAZ21)
Cascade delivery temperature feeler (QAD21)
Cascade return temperature feeler (QAD21)
External temperature feeler (QAC31)
Installation pump
L
TA1
RL1
PZ1
N
R4
Scheda caldaia
Main PCB
SB
SB
SE
SE
–
CR
+
CR
TA ALBATROS
TA
Connector inserted
Connettore inserito
BOILER 2
CALDAIA 2
RPI
RVA
47.320
C
PB
SM
M
SI
R
SR
PB Boiler pump
PZ1-n Zone pumps
TA1-n Zone Room thermostats
RL1-n Zone relay (two exchange contacts)
RPI Installation pump relay
BP By-pass
C ALBATROS RVA 47.320 regulator
CRn CR1
TAn
RLn
PZn
N
L
DO NOT REVERSE THE PPS CONNECTION POLARITY
Non invertire la polarità della connessione PPS
R3
Main PCB
Scheda caldaia
SB
SB
SE
SE
–
CR
+
CR
TA ALBATROS
TA
Connettore inserito Connector inserted Connettore inserito
CALDAIA 3 BOILER 3
RL1
TA1
PZ1 PZn
PI
SB
D.H.W. TANK
BOLLITORE
(separato)
(Separated)
SM
SR
SB
SE
–
ALBATROS RVA 47.320
RPI
PI
PB
R2
Scheda caldaia Main PCB
SB
SB
SE
SE
–
CR
+
CR
TA ALBATROS
TA
Connector inserted Connettore inserito Connector inserted
BOILER 4
CALDAIA 4
RLn
TAn
BP
PPS BUS
+
R1
SB
SB
SE
SE
–
CR
+
CR
TA
TA