Dimensions And Pipe Connections - Nibe S1255 Installer Manual

SYSTEM DIAGRAM
S1255 consists of heat pump, water heater, immersion
heater, circulation pumps and control system. S1255 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 re-
frigerant, 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 6
XL1 Connection, heating medium flow
XL2 Connection, heating medium return
XL3 Connection, cold water
XL4 Connection, hot water
XL6 Connection, brine in
XL7 Connection, brine out
* Can be angled for side connection.
14 Chapter 4 | Pipe connections
4 3 7 2
Dimensions and pipe
connections
600
540
465
390
210
135
60
560
XL1 XL6 XL4
PIPE DIMENSIONS
Connection
(XL1)/(XL2) Heating medium supply/re-
turn ext. Ø
(XL3)/(XL4) Cold/hot water Ø
(XL6)/(XL7) Brine in/out ext. Ø
25
440
622
XL3 XL7 XL2
6 12 16
kW kW kW
(mm) 22 28
(mm) 22
(mm) 28
NIBE S1255