Cadel DEMETRA Installation, Use And Maintenance Manual page 21

Hydraulic connection diagrams Demetra: with boiler.
DEMETRA
Fig. 22 - Connection 2
LEGEND Fig. 22 page 21
VEA
Open expansion tank
IR
Heating system
AI System supply
SI
Flue damper
VR
Check valve
PI
System pump
RI
System return
SC
Drain
EAF
Cold water inlet
UAC
Hod water outlet
B Boiler
PB
Boiler pump
AB
Boiler supply
RB
Boiler return
TS
Safety pipe
EN
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