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4. Installation Diagrams
To prevent operational difficulties, the feed from the cylinder should be as illustrated
below. Side entry cylinder bosses are not recommended because:
•
A drop in cylinder water level could expose a top entry immersion element if
fitted.
•
Air-in-water solution gathers at the edge of the cylinder and in the centre, during
the heating process before travelling up the vent.
25 mm
minimum
Minimum
1.0 m Head
Minimum
22 mm
Isolating Valve
A high level hot feed pipe run as illustrated below will result in air locking and should
be avoided.
Other Cold
*
Draw Offs
*
A
Warning pipe
Cistern
Vent
80 mm Head
Pipe
B
D.H.W.
Hot
60
o
C
Supply
Other Hot Draw Offs
Correct Installation
Hot Feed Pipe Run
Cistern
Vent
Pipe
Side
D.H.W.
Entry
60
o
C
Boss
Other Hot
Draw Offs
Incorrect Installation
Minimum
Hose
Retaining
Ring
High-level
Isolating Valves
Hot
Supply
Cold
*
Supply
*
This layout is not suitable
for the Mira Extreme.
*Incorrect supply
connections
A
Cylinder Feed
Cold Pump Feed
B
Vent
90
o
o
o
30
–60
missing
Hose retaining
ring missing
Strained Hose
Warning
pipe
13
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