Caution
The connecting pipe between the expansion tank and the safety valve
must slope continuously upwards. A continuous upwards slope means
that the pipe must not slope downwards from the horizontal at any
point.
N
Ensure that the pipe installation is carried out in accordance with the
dimensions and connection diagrams.
5.1
Water volume in heating system
In order to secure the defrosting of the outdoor unit, a minimum amount of water must be contained in the heating system. This is
shown in the table below. If the heating system itself holds the amount of water described in the table, a volume tank is not needed, but
recommended.
N
If the amount of water in the heating system is not sufficient, Low
Pressure alarms may occur.
Volume tank table
Unit
5 kW
9 kW
16 kW
Min water volume in heating system. DHP-iQ Mini
l
120
180
320
Min water volume in heating system. DHP-iQ Maxi
l
60
90
160
5.1.1
Flow switch installation
Flow switch is not integrated part in outdoor unit. But the installation is essential to operate the outdoor unit. The flow switch is
provided in the delivery of the heat pump.
Before installing, make sure you have the proper flow switch for your outdoor unit. The flow switch must be installed horizontal.
Make sure to insulate the flow switch thoroughly, to protect it from outdoor weather conditions.
Caution
The flow switch must be installed described in the installation guide of
DHP-iQ. All electric wiring works shall be implemented by manuals
which Danfoss provides . Before completing the installation works,
make sure to check if the flow switch is installed horizontal and if flow
direction is in parallel with pipe direction. (Straight length of In and
Out pipe of flow switch shall have 5 times length in diameter)
Caution
Install the flow switch before you turn the power on. If the outdoor
unit, anyway, has been powered, turn it off and wait for a while before
installing the flow switch, due to excess current in the outdoor unit
Installation Guide
DHP-iQ
Danfoss Heating Solutions
VIJSS102
35
