Product guide

85
Zip Accessories
Unvented water heating
5, 10 & 15 litre capacity
Minimum length of pipe – Length ‘A’
Capacity 15mm pipe 22mm pipe
5 litres 1.37m 0.6m
10 litres 2.7m 1.2m
15 litres 4.2m 1.8m
Diagram B
Inlet pressure less than 4 bar but expanded hot water cannot be accommodated in the pipe
work. (Install AQ2 expansion vessel and check valve).
Diagram C
Inlet pressure greater than 4 bar. (Install AQ2 expansion vessel and check valve with AQ3
pressure reducer).
Diagram A
Inlet pressure less than 4 bar and expanded hot water can be accommodated in the pipe work.
AQ2
Expansion vessel
and check valve
(3.5 bar)
AQ3
Combined ressure
reducer (set at 3.5
bar) and line strainer
AQ1
Pressure and temperature relief valve (7 bar/90ºC).
Provides additional levels of safety when fitted to water
heater as shown in Diagram D.
Note: Varipoint supplied complete with AQ1.
Order AQ1 separately for use with Aquapoint.
AQ4 TMV2
Thermostatic blending valve complete with 2 check valves. (Set temp range
30º to 65ºC).
AQ4S TMV3
NHS Approved Thermostatic Blending Valve complete with 2 check valves.
(Set temp range 30º to 50ºC).
These blending valves provide over temperature protection and are also
ideal for extending system capacity.
Zip Accessories
Unvented water heating
5, 10 & 15 litre capacity
Varipoint & Aquapoint
Unvented Accessory Selection
Additional Accessories
84
YES
NO
NO
NO
NO
Will the pipework accommodate expanded water without hot water entering any supply
pipe connected to a cold water draw-off? (See diagram A opposite and note minimum
pipe lengths). If expansion in the cold water main is restricted, e.g. by a valve or meter,
an expansion vessel and other relevant accessories MUST be fitted.
Is reverse flow prevented, e.g. by a valve or meter?
Is the mains pressure 4.0 bar or less?
NOT REQUIRED
Fit AQ2 + AQ3
Is the mains pressure 4.0 bar or less?
Fit AQ2Fit AQ2 + AQ3
AQ4
AQ1
YES
YES YES
Aquapoint
or Varipoint
Aquapoint
or Varipoint
Aquapoint
or Varipoint
Hot water
Hot water