© Baxi Heating UK Ltd 2008
25
22mm
Flow
Return
Boiler
Optional
2 port
valves
Indirect HE
Cylinder
Auto air vent
Typical Fully Pumped
S
ealed
S
y
s
tem
** 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 connection
s
including any branches.
Specification of all components
≥
110˚C and
≥
3 bar
2m **
Automatic
by-pass or
existing
by-pass
balancing
valve
Optional
3 port
valve
Auto air vent
Pressure
gauge
visible from
filling point
Safety
valve
Expansion
vessel
Alternative existing
by-pass arrangement
using the bathroom
radiator fitted with two
lockshield valves
Pump with
isolating valves
Manual
Filling
and
Make Up
Point
S
ealed
s
y
s
tem manual filling and
make up point requirement
s
Stop
Valve
Temporary
Hose
Stop
Valve
Double
Check
Valve
From
Mains
Fig. 31
Fig. 32