Heating medium side
CONNECTING THE CLIMATE SYSTEM
A climate system is a system that regulates indoor
comfort with the help of the control system in F1345
and for example radiators, underfloor heating/cooling,
fan convectors etc.
• The pipe connections are on the rear of the heat pump.
• Install the necessary safety equipment and shut-off
valves (installed as close to F1345 as possible so that
the flow to individual cooling modules can be shut
off).
• Fit the supplied particle filter on the incoming pipe.
• The safety valve must have a maximum 0.6 MPa (6.0
bar) opening pressure and be installed on the heating
medium return. The entire length of the overflow
water pipe from the safety valve must be inclined, to
prevent water pockets and must also be frost-free.
• When connecting to a system with thermostats on all
radiators, a relief valve must be fitted, or some of the
thermostats must be removed to ensure sufficient
flow.
• Fit the supplied non-return valves on the outgoing
pipe.
Caution
When necessary you should install vent valves
in the climate system.
Caution
F1345 is designed so that heating production
can be performed using one or two cooling
modules. However, this entails different pipe
or electrical installations.
Cold and hot water
CONNECTING THE HOT WATER HEATER
• Fit shut-off valve, non-return valve and safety valve as
illustrated.
• The safety valve must have max. 1.0 MPa (10.0 bar)
opening pressure, and be installed on the incoming
domestic water line as shown.
• A mixer valve must also be installed, if the factory
setting for hot water is changed. National regulations
must be observed.
• Hot water production is activated in the start guide or
in menu 5.2.
Caution
The heat pump/system is designed so that hot
water production can occur with one or several
cooling modules. This however entails different
pipe or electrical installations.
Fixed condensing
If F1345 is to work with fixed condensing, you must
connect external supply temperature sensor (BT25) ac-
cording to the description on page 26. In addition, you
must make the following menu settings.
Menu setting (local vari-
ations may be required)
Menu
Desired temperature in the
tank.
1.9.3.1 - min. flow line
temp. heating
Desired temperature in the
tank.
5.1.2 - max flow line temper-
ature
intermittent5.1.10 - op. mod heat med
pump
manual4.2 - op. mode
NIBE F1345Chapter 4 | Pipe connections20
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