Pipe Connections; Pipe Connections General - Nibe F1345 Installer Manual

4 Pipe connections

General
Pipe installation must be carried out in accordance with
current standards and directives. F1345 can operate with
a return temperature of up to 58 °C and an outgoing
temperature of 65 °C.
F1345 is not equipped with internal shut off valves; these
must be installed to facilitate any future servicing.
NOTE
The pipe installations must be flushed before
F1345 is connected, so that any contaminants
do not damage the components parts.
NOTE
Do not solder directly on the pipes in F1345,
because of internal sensors.
Compression ring coupling alternatively pressure
connection should be used.
NOTE
The heating system's pipes must be earthed to
prevent a potential difference between them
and the building's protective earth.
Symbol key
Symbol Meaning
Venting valve
Shut-off valve
Non-return valve
Shunt / shuttle valve
Safety valve
Temperature sensor
Expansion vessel
Pressure gauge
P
Circulation pump
Particle filter
Auxiliary relay
Compressor
Heat exchanger
NIBE F1345
System diagram
F1345 consists of two heat pump modules, circulation
pumps and control system with possibility of additional
heat. F1345 is connected to the brine and heating medi-
um circuits.
In the heat pump evaporator, the brine (water mixed
with anti-freeze, glycol or ethanol) releases its energy to
the refrigerant, which is vaporised in order to be com-
pressed in the compressor. The refrigerant, of which the
temperature has now been raised, is passed to the con-
denser where it gives off its energy to the heating medi-
um circuit and, if necessary, to any docked water heater.
If there is a greater need for heating/hot water than the
compressors can provide it is possible is to connect an
24-30kW
external immersion heater.
EP15
EP15-XL6
EP15-XL7
EP14
EP14-XL6
EP14-XL7
EP14 Cooling module
EP15 Cooling module
XL1 Connection, heating medium flow
XL2 Connection, heating medium return
XL6 Connection, brine in
XL7 Connection, brine out
EP15-XL1
EP15-XL2
EP14-XL1
EP14-XL2
Chapter 4 | Pipe connections
40kW
15