Connecting air/water
heat pump
You can find a list of compatible air/water heat pumps
in section "System solutions".
• Install the necessary safety equipment, non-return
valve, shut-off valve, circulation pump and expansion
vessel. Also, consult the Installer Manual for your
air/water heat pump.
• Install the enclosed filterball.
• If the system is to work towards both a climate sys-
tem and hot water heater, a reversing valve must be
installed.
Connecting the
climate system
A climate system is a system that regulates indoor
comfort with the help of the control system in SMO S40
and for example radiators, underfloor heating/cooling,
fan convectors etc.
• Install external supply temperature sensor (BT25) It
says when the air/water heat pump must start to
produce heating/cooling for the climate system.
• Install external return temperature sensor (BT71). It
is used to check that the climate system is correctly
adjusted.
• When connecting to systems with thermostats on all
radiators/underfloor heating coils, some of the thermo-
stats must be removed to ensure there is sufficient
flow.
• For an even flow to the radiators during hot water
charging or similar, a circulation pump and reversing
valve for the climate system are installed.
15Chapter 4 | Installing the installationNIBE SMO S40
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