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Drain valve: It is supplied inside the machine, tied with a flange to one leg of
the compressor. This key must be installed in the drain socket
on the back of the heat pump before filling the water in the
heating/cooling circuit.
4.1-6 Controller
The unit is equipped with an external electronic controller that handles all functions
necessary for heat pump operations. Defrosting, stop at max/min temperature,
connection of the compressor heater as well as enabling the aux electrical heater,
monitoring of motor protection and pressure sensors are all controlled.
The number of starts and the operating time after this power-on can also be read.
The controller is set during installation and can be used during a service.
Under normal operating conditions the home owner does not need to have access to
the controller. The unit has an integrated electronic outlet water temperature sensor
that limits the outlet temperature up to 60°C.
4.2 Installation design
The unit can be installed in several different ways.
The safety equipment must be installed in accordance with current regulations for all
installation options.
When connecting with the unit, the total water volume in the heat pump pipe system
and buffer tank must be at least 10 liters per KW of output.
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