19
5.12 CONNECTING PIPEWORK
A
B
C
D
A
B
C
D
PR Valve
PR Valve relief
plumbed to low level
Ø15mm
PRV discharge
vessel
Expansion Vessel
System Drain
Automatic Air Vent
Pipes Ø15mm or Ø22mm
see 5.%
FIG. 5.12A CONNECTING PIPEWORK
Shut Off
valve
ReturnFlow
