Sime RVA 47.320 Manual Del Usuario página 40

3.4. 1 Sequence management of up to 4 boilers for heating with D.H.W. tank and zone valves
Hydraulic circuit
PPS BUS
BOILER 1 BOILER 2
CALDAIA 1 CALDAIA 2
KEY
SI
SB
SM
SR
SE
BP
Wiring diagram
KEY
SB Feeler of external boiler (QAZ21)
SM Cascade delivery temperature feeler (QAD21)
SR Cascade return temperature feeler (QAD21)
S External temperature
feeler (QAC31)
PI Installation pump
with variable head
PB Boiler pump
VZ1-n Zone valves
TA1-n Zone Room thermostat
RL1-n Zone relay
CR1-n Clean contacts
R1 536-Ohm-resistor
R2 562-Ohm-resistor
R3 604-Ohm-resistor
R4 649-Ohm-resistor
Main PCB
Scheda caldaia
ALBATROS
N
T
L
CALDAIA 1 BOILER 1
40
SE
BOILER 3 BOILER 4
CALDAIA 3 CALDAIA 4
Hydraulic separator
Feeler of external boiler (QAZ21)
Cascade delivery temperature feeler (QAD21)
Cascade return temperature feeler (QAD21)
External temperature feeler (QAC31)
By-pass
L
TA1
RL1
VZ1
N
R4
Main PCB
Scheda caldaia
SB
SB
SE
SE
–
CR
+
CR
TA ALBATROS
TA
connector inserted
Connettore inserito Connettore inserito
CALDAIA 2 BOILER 2
RVA
47.320
C
SM
M
SI
R
SR
PI Installation pump with variable head
PB Boiler pump
VZ1-n Zone valves
TA1-n Zone room thermostat
RL1-n Zone relay
C ALBATROS RVA 47.320 regulator
CRn CR1
TAn
VZn
RLn
N
L
DO NOT REVERSE THE PPS CONNECTION POLARITY
Non invertire la polarità della connessione PPS
R3
Scheda caldaia
Main PCB
SB
SB
SE
SE
–
CR
+
CR
TA ALBATROS
TA
connector inserted
connector inserted
Connettore inserito
CALDAIA 3 BOILER 3
RL1 RLn
TA1
VZ1
PI
PB
SB
D.H.W. TANK
BOLLITORE
(separato)
(Separated)
SR
SB SM SE
–
+
ALBATROS RVA 47.320
PI
PB
R2
Main PCB
Scheda caldaia
SB
SB
SE
SE
–
CR
+
CR
TA ALBATROS
TA
connector inserted
Connettore inserito
CALDAIA 4 BOILER 4
TAn
VZn
BP
PPS BUS
R1
SB
SB
SE
SE
–
CR
+
CR
TA
TA