8
AP3/05, AP3/10, AP3/15 Installation Instructions
When deciding the final location of the heater consideration should be
given to the safe and visible disposal of any water resulting from leaks or
seepage.This is particularly relevant when the heater is located in a roof
space, cupboard or any concealed location. For guidance please call Zip
Customer Service on 0845 602 4533.
Underbasin model shown
Diagram 1.
Inlet pressure less than 4 bar
and expanded hot water can
be accommodated in the
pipe work.
Diagram 2.
Inlet pressure less than 4 bar
but expanded hot water
cannot be accommodated in
the pipe work. (Using pack
AQ2 expansion vessel and
check valve).
Diagram 3.
Inlet pressure greater than 4
bar. (Using pack AQ2 and AQ3
expansion vessel, check valve
and pressure reducing valve).
Minimum length of pipe – Length ‘A’
Size
15mm pipe
22mm pipe
5 litres
1.2m (4ft)
0.6m (2ft)
10 litres
2.7m (9ft)
1.2m (4ft)
15 litres
4.2m (14ft)
1.8m (6ft)
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