12 | EN
3.5 Connecting other functions
3. INSTALLATION
In order to ensure opmal heang of the SPA, regardless of the outside temperature, it is possible
to connect a relay to control the SPA heater, which in extreme condions will ensure good water
heang.
This relay is controlled by the heat pump control box either automacally or manually (boost).
As an opon, it is also possible to add an addional relay to control a circulaon pump if the
exisng ow rate in the installed SPA system is not sucient (recommended ow rate in the heat
pump around 1.5 to 2 m
3
/h).
In addion, it is possible to add an automac control (dry contact) that allows the heat pump to
start or not.
To do this, just remove the protecve cover to gain access to the corresponding terminal block and
connect the necessary wires.
Remove the protecve cover
(2 screws)
Connect the wires