Nibe F1155 Series Installer Manual page 19

Free cooling
The accessory PCS 44 allows the connection of passive
cooling, for example with fan coils. The cooling system
is connected to the heat pump brine circuit, whereby
cooling is supplied from the collector via a circulation
pump and shunt valve.
Pipes and other cold surfaces must be insulated with
■
diffusion-proof material to prevent condensation.
Where the cooling demand is high, fan convectors
■
with drip trays and drain connection are needed.
The brine system must be supplied with a pressure
■
expansion vessel (CM3). If there is a level vessel (CM2)
this should be replaced.
P
NIBE F1155
Underfloor heating system/preheating FTX
The external circulation pump is dimensioned for the
under floor heating system's demand.
To ensure a heating supply during hot water production,
the heating system can be supplemented with a NIBE
UKV vessel, e.g. when there is a water coil in the FTX
ventilation.
Chapter 4 | Pipe connections 19