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 dif-
fusion-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 expan-
sion vessel. If there is a level vessel this should be re-
placed.
-EP25-AA25
-EP25-QN18-EP25-BT64
-EP25-GP13
-EP25-BT65
-EP25-RM1
-EP25
POOL
With the POOL 40 accessory, you can heat the pool with
your system.
During pool heating, the heating medium circulates between
the S1256 and the pool exchanger using the heat pump’s
internal circulation pump.
-CL11-HQ4-CL11-BT51-CL11-GP9
-CL11-EP5
-CL11-AA25
-CL11
19Chapter 4 | Pipe connectionsNIBE S1256
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