Pipe Connections; General; System Diagram - Nibe F1245 Installer Manual

4 Pipe connections

General

Pipe installation must be carried out in accordance with
current norms and directives. F1245 can operate with
a return temperature of up to 58 °C and an outgoing
temperature from the heat pump of 70 (65 °C with
only the compressor).
F1245 is not equipped with external shut off valves;
these must be installed to facilitate any future servicing.
Caution
Any high points in the climate system, must
be equipped with air vents.
NOTE
The pipe system needs to be flushed out be-
fore the heat pump is connected so that debris
cannot damage component parts.
Symbol key
Symbol Meaning
Venting valve
Shut-off valve
Non-return valve
Shunt / shuttle valve
Safety valve
Trim valve
Temperature sensor
Level vessel
Expansion vessel
Pressure gauge
P
Circulation pump
Particle filter
Auxiliary relay
Flow meter (only for Germany, Switzerland and
Austria)
Compressor
Heat exchanger
NIBE™ F1245

System diagram

F1245 consists of a heat pump, water heater, electrical
module, circulation pumps and a control system. F1245
is connected to the brine and heating medium 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
compressed in the compressor. The refrigerant, of
which the temperature has now been raised, is passed
to the condenser where it gives off its energy to the
heating medium circuit and, if necessary, to the water
heater. If there is a greater need for heating/hot water
than the compressor can provide there is an integrated
immersion heater.
XL 1 Connection, heating medium flow
XL 2 Connection, heating medium return
XL 3 Connection, cold water
XL 4 Connection, hot water
XL 6 Connection, brine in
XL 7 Connection, brine out
Chapter 4 | Pipe connections 13