Potterton Performa 9 SL HE User Manual page 25

Pressure
gauge
visible from
filling point
Safety
valve
Expansion
vessel
Auto air vent
22mm
Boiler
© Baxi Heating UK Ltd 2008
Pump with
isolating valves
Automatic
by-pass or
existing
by-pass
balancing
valve
2m **
** If plastic pipe is used for the central heating circuit there must be a run
of at least 2 metres of uninsulated copper pipe from the boiler flow and
return connections including any branches.
Specification of all components ≥ 110˚C and ≥ 3 bar
Manual
Filling
and
Make Up
Point
Auto air vent
Optional
2 port
Optional
3 port valves
valve
Alternative existing
by-pass arrangement
using the bathroom
radiator fitted with two
lockshield valves
Typical Fully Pumped Sealed System
Stop
Valve
Temporary
Hose
Double
Check
Valve
Stop
Valve
From
Mains
Sealed system manual filling and
make up point requirements
Indirect HE
Cylinder
Flow
Return
Fig. 31
Fig. 32
25