Hydraulic circuit
PPS BUS
SI
KEY
UA
Zone room unit (QAA70)
PZ
Zone pumps
1–n
SI
Hydraulic separator
SZ
Zone feeler (QAD21 / QAZ21)
L
Wiring diagram
N
ponticello Albatros inserito
KEY
SB
Sanitary feeler
SE
External feeler (QAC31)
UA
Zone room unit (QAA70)
PZ
Zone pumps
1–n
SZ
Zone feeler (QAD21 / QAZ21)
VM
3–way mixing valve
Tmax Thermostat for excess temperature
TA
Zone room thermostats
2–n
CRL
Zone contacts
2–n
SE
UA
RVA
46.531
QAA 70
VM
PZ1
TMAX
SZ
VM
Tmax Thermostat for excess temperature
IP
SE
TA
TA2
RL2
PZ2
PZn
SB
SB
SB
SE
SE
–
SCHEDA
CR
CALDAIA
CR
+
TA
TA
L
N T
L
N
T
RL2
PZ2
IP
3–way mixing valve
Floor installation
External feeler (QAC31)
Zone room thermostats
2–n
TAn
RLn
CRL2
CRLn
VM
N
L
TA2
RLn
PZn
QAA 70
UA
D6 D5 D4 D3 D2 D1
+
–
SE
SZ
– +
ALBATROS RVA46.531
TMAX
PZ1
TAn
73