Nibe F1255 Installation Manual page 21

Further option information is available at www.nibe.co.uk
and in the respective assembly instruction for the ac-
cessory used. See page 67
can be used with F1255.
BUFFER VESSEL
If the climate system volume is too small for the heat
pump output, the radiator system can be supplemented
with a buffer vessel, for example NIBE UKV.
EXTRA HOT WATER HEATERS
The system should be supplemented with an extra water
heater, if a large bath tub or other significant consumer
of hot water is installed.
Water heater with immersion heater
If it is possible to use a water heater with an immersion
heater, connect it as illustrated below.
GROUND WATER SYSTEM
An intermediate heat exchanger is used to protect the
heat pump's exchanger from dirt. The water is released
into a buried filtration unit or a drilled well. See
for more information about connecting a ground water
pump.
If this docking alternative is used, "min. brine out" in
menu 5.1.7 "br pmp al set." must be changed to a suit-
able value to prevent freezing of the heat exchanger.
-EP12
-EP12-AA25
-EP12-EP4
-EP12-HQ40
-EP12-GP3
NIBE F1255
for a list of accessories that
page 30
VENTILATION RECOVERY
The installation can be supplemented with the exhaust
air module NIBE FLM to provide ventilation recovery.
• Pipes and other cold surfaces must be insulated with
diffusion-proof material to prevent condensation.
P
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
Chapter 4 | Pipe connections
-EP25-RM1
21