VENTILATION RECOVERY
The installation can be supplemented with the exhaust
air module NIBE FLM S45 to provide ventilation recov-
ery.
• Pipes and other cold surfaces must be insulated with
diffusion-proof material to prevent condensation.
• The brine system must be supplied with a pressure
expansion vessel. If there is a level vessel this should
be replaced.
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-GP20-EP21-BT2
-EP21-AA25
-EP21-BT3
-EP21-QN25
-EP21
POOL
With the POOL 40 accessory, you can heat the pool
with your heat pump.
During pool heating, the heating medium circulates
between the S1255PC and the pool exchanger using
the heat pump’s internal circulation pump.
-CL11-HQ4-CL11-BT51-CL11-GP9
-CL11-EP5-CL11-QN19
-CL11-AA25
-CL11
NIBE S1255PCChapter 4 | Pipe connections16
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