Installation
The Caleffi 2522HP series must be installed by a licensed plumber. The installer has a duty of
care to ensure that all aspects of the installation comply with the AS/NZS 3500, appropriate
Codes of Practice and/or local government requirements.
Prior to the installation of the Caleffi 2522HP series valve, the system must be checked to
ensure that the
system operating conditions fall within the recommended operating range
of the valve, i.e. verify supply temperatures, supply pressures, risk assessments, etc.
Also, be aware of all current legislation, e.g. the maximum distance from the outlet of the valve to
any terminal fitting, etc.
The supply system must be thoroughly flushed and cleaned to remove any debris which may
accumulate during the installation. Failure to remove any debris will affect the performance and
may void the manufacturer’s warranty.
In areas that are subject to high levels of aggressive water, provision must be made to treat the
water prior to it entering the valve.
The valve can be installed in any position, vertical or horizontal. To allow for maintenance, it is
important that access to the valve and fittings is not impeded.
The hot and cold water supplies must be connected to the valve strictly in accordance with the
indications on the body of the valve.
The inlets of the valves are clearly marked with the letter H (Hot) and C (Cold).
The outlet is marked with the word MIX.
Where one or both of the incoming supply pressures are excessive, a Caleffi pressure reducing
valve should be fitted to reduce the pressure(s) to within the limits as quoted previously.
Any tempering valve should be installed with isolating valves, line strainers and check valves
at both the inlets.
The Caleffi 2522HP series is supplied complete with line strainers and check valves at the hot
and cold inlets. Strainers prevent debris from entering the valve and the check valves at both
hot and cold inlets prevent cross-connection.
Installing isolating valves should be considered so the valve can be isolated during
commissioning or if servicing is required.
The pipework must not be used to support the weight of the valve.
If the valve is not installed correctly then it will not function correctly and may put the user in
danger.
Installation diagram
Pressure
reducing valve
(if required)
Isolating
valve
Isolating
valve
Strainer
& check
valve
Strainer
& check
valve
T
Pressure
reducing valve
(if required)
Temperature
limiting valve
(if required)
HOT SUPPLY
COLD SUPPLY
MIXED
OUTLET
T < 50
∞
C
AS4032.2
Cof
C02466
6
