Pipe Connections - Nibe ECS 40 Installateurhandbuch

Pipe connections

INSTALLATION PRINCIPLE
CIRCULATION PUMP
The circulation pump's permitted positions.
SHUNT
The shunt's permitted positions.
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 radi-
ator in the climate system 1. The return line from the
extra climate system is connected to the shunt valve
and to the return line from the climate system 1, see
image and outline diagram.
90
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 located on
the docking connection (XL8).
• Install the supplied plastic pipe with coupling in the
docking connection (XL8).
• The shunt valve (QN25) is located on the supply line
after the heat pump from its docking connection (XL8).
The return line from the extra climate system is con-
nected to the shunt valve and to the return line from
the heating system 1, see image and outline diagram.
NOTE
Incorrect installation can affect the function.
Shunt valve, (QN25)
Connection DN32 1 1/4" (22 mm)
Heat
pump/indoor
module
Return
Flow pipe
LEK
ECS 40/ECS 41 | GB