Pipe Connections; Pipe Connections General - Nibe F1155 Installer Manual

4 Pipe connections

General
Pipe installation must be carried out in accordance with
current norms and directives. F1155 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).
F1155 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
Level vessel
Trim valve
Shunt / shuttle valve
Safety valve
Temperature sensor
Expansion vessel
Pressure gauge
P
Circulation pump
Particle filter
Auxiliary relay
Flow meter (only heat pumps with energy
meter)
Compressor
Heat exchanger
NIBE™ F1155
System diagram
F1155 consists of heat pump, immersion heater, circu-
lation pumps and control system. F1155 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 any docked
water heater. If there is a greater need for heating/hot
water than the compressor can provide there is an in-
tegrated immersion heater.
XL1 XL6
VBf KBin
XL 1 Connection, heating medium flow
XL 2 Connection, heating medium return
XL 6 Connection, brine in
XL 7 Connection, brine out
XL 9 Connection, hot water heater
XL9 XL7 XL2
VV KBut VBr
Chapter 4 | Pipe connections 15