Free Cooling; Two Or More Climate Systems; Under Floor Heating Systems - Nibe F1145 Installer Manual

Free cooling

The installation can be supplemented with fan convectors,
for example, in order to allow connections for free cooling
(PCS 44).
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 ex-
pansion vessel (CM3). If there is a level vessel (CM2)
this should be replaced.
Fläktkonvektor
P

Under floor heating systems

The external circulation pump is dimensioned for the
under floor heating system's demand.
If the climate system volume is too small for the heat
pump output, the underfloor heating system can be
supplemented with a buffer vessel, for example NIBE
UKV.
UKV
NIBE™ F1145
2
1
3
T

Two or more climate systems

When more than one climate system, with a lower tem-
perature, is to be heated up, the following connection
can be used. The shunt valve lowers the temperature to,
for example, the under floor heating system.
The ECS 40/ECS 41 accessory is required for this connec-
tion.
Pool
Charging of the pool is controlled by the pool sensor. In
the case of low pool temperatures, the shuttle valve re-
verses direction and opens towards the pool exchanger.
The POOL 40 accessory is required for this connection.
T
Pool
T
Chapter 4 | Pipe connections 15