Pipe Connections - Nibe ECS 40 Installateurhandbuch

Pipe connections

Connection of extra climate system
When connecting extra climate systems, they must be
connected so that they have a lower temperature than
the normal climate system.
Circulation pump and mixing valve
The extra circulation pump (GP20) is positioned in the
extra climate system according to the outline diagram.
The shunt valve (QN25) is located on the supply line
after the heat pump/indoor module, before the first
radiator in the climate system 1. The return line from
the additional climate system must be connected to
the shunt valve and to the return line from the climate
system 1, see image and outline diagram.
Alternative connection F370/F470
At alternative connection of the first extra climate sys-
tem to F370/F470 the extra climate system may have
a higher temperature than the normal climate system.
First drain the boiler water reservoir/heating system
■
if filled with water.
Unscrew the plugged connection that is on the
■
docking connection (XL8).
Install the supplied plastic pipe with coupling in the
■
docking connection (XL8).
The mixing valve (QN25) is located on the flow line
■
after the heat pump from its docking connection
(XL8). The return line from the extra climate system
is connected to the mixing valve and to the return
line from the heating system 1, see image and outline
diagram.
NOTE
Incorrect installation can affect the function.
By-pass valve, (QN25)
Connections, Ø 22 mm
Heat
pump/indoor
module
Temperature sensor
The flow temperature sensor (BT2) is installed on the
■
pipe between the circulation pump (GP20) and mix-
ing valve (QN25).
The return line sensor (BT3) is installed on the pipe
■
from the extra climate system.
Install the temperature sensors with cable ties with the
heat conducting paste and aluminium tape. Then insu-
late with supplied insulation tape.
NOTE
Sensor and communication cables must not
be placed near power cables.
Flow pipe
LEK
Return
GB
19