Installation Guide
Termix Water heater – PM2+P
6.0 Controls
6.1 DHW temperature control
DHW temperature control
There are various types of DHW temperature control used in
Danfoss substations.
DHW temperature should be adjusted to 45-50 °C, as this provides
optimal utilisation of DH water. At DHW temperatures above 55 °C,
the possibility of lime scale deposits increases significantly.
6.1.1 PM2+P controller
PM2+P is a self-acting proportional flow controller with integrated
differential pressure controller.
The PM2+P operates at its best at DH supply temperatures of up to
100°C.
By turning the handle for temperature setting, the indicator of
temperature setting moves towards red or blue dot. This means
that temperature setting is increased or decreased.
6.1.2 Safety valve
The purpose of the safety valve is to protect the substation from
excessive pressure.
The blow-off pipe from the safety valve must not be closed. The
blow-off pipe outlet should be placed so that it discharges freely
and it is possible to observe any dripping from the safety valve.
It is recommended to check the operation of safety valves at
intervals of 6 months. This is done by turning the valve head in
direction indicated.
6.1.3 Strainer
Strainers should be cleaned regularly by authorized personnel. The
frequency of cleaning would depend on operating conditions and
the manufacturer’s instructions.
Danfoss District Energy
VI.GE.O2.02 / LUK38042
DEN-GT
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