Installation
The following instructions must be read prior to the installation of a Caleffi 5213 series thermostatic mixing
valve. The installer should also be aware of his responsibility and duty of care to ensure that all aspects
of the installation comply with current regulations and legislation.
The Caleffi 5213 series should be installed using the appropriate standard, code of practice and legislation
applicable to each state and following the details in this manual. The Caleffi 5213 series must be installed
by a licensed plumber.
Prior to the installation of the Caleffi 5213 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.
The supply system into which the Caleffi 5213 series is to be installed 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 the manufacturer’s warranty on the product. 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, whether vertical or horizontal. It is essential that the access to
the valve is not obstructed for future maintenance that may be required to the valve or associated fittings.
It is essential that when the installation is designed and/or installed, all current legislation is noted, e.g. the
maximum distance from the outlet of the valve to any terminal fitting.
The connecting 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 the incoming supply pressures are excessive, a Caleffi pressure reducing valve should
be installed to reduce the pressure(s) within the limits.
Any thermostatic mixing valve must be installed with isolating valves, line strainers and check valves at
both the inlets. Isolating valves are required so that the water supply to the valve can be isolated in the
event that servicing is required. Strainers are required to prevent debris from entering the valve. Check
valves are required to both hot and cold inlets to prevent cross-connection.
The Caleffi 5213 series is supplied complete with the check valves at the hot and cold inlets. The check
valve of the sweat version must be dismantled from the tail piece before soldering and then reassembled.
To ensure that the performance of the Caleffi 5213 series valve is maintained (in the event of cold water
failure), the temperature of the hot water supply at the point of entry to the valve must be a minimum of
18°F higher than the set mixed water discharge temperature.
The piping to and from the valve must not be used to support the weight of the valve.
If the valve is not installed correctly, it will not function correctly and may put the user in danger.
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Installation Tip
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5213 MixCal
TM
