8 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 0870 608 8888.
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 and expanded hot
water cannot be accommodated in the pipe work.
(Using pack AQ2 and AQ3 expansion
vessel, check valve and pressure reducing valve)
Minimum length of pipe – Length ‘A’
Size 15mm pipe 22mm pipe
10 litres 2.7m (9ft) 1.2m (4ft)
15 litres 4.2m (14ft) 1.8m (6ft)
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