Nibe S1155 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.
-EP25
-EP25-AA25
-EP25-GP13 -EP25-BT64 -EP25-QN18
-EP25-BT65
TWO OR MORE CLIMATE SYSTEMS
In buildings with several climate systems that require
different supply temperatures, the accessory
ECS 40/ECS 41 can be connected. A shunt valve then
lowers the temperature to the underfloor heating sys-
tem, for example.
-EP21
-EP21-AA25
-EP21-BT2
-EP21-BT3
-EP21-QN25
-EP21-RM1
NIBE S1155
-EP25-RM1
-EP21-GP10
POOL
With the POOL 40 accessory, you can heat the pool
with your heat pump.
During pool heating, the heating medium circulates
between the S1155 and the pool exchanger using the
heat pump's internal circulation pump.
-CL11
-CL11-AA25
-CL11-QN19 -CL11-EP5
-CL11-GP9
CONNECTING HOT WATER CIRCULATION
Hot water circulation
A circulation pump can be controlled by S1155 to circu-
late the hot water. The circulating water must have a
temperature that prevents bacterial growth and scalding,
and national standards must be satisfied.
Chapter 4 | Pipe connections
-CL11-BT51 -CL11-HQ4
-QZ1
-QZ1-FQ3
-QZ1-RN1 -QZ1-RM1 -QZ1-GP11
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