Caution
Water pipe and connections shall be cleaned by using water or cleaner
before operating the unit at first time.
Caution
Considering external static pressure and water pump performance, se-
lect water plumbing specification and under floor loofs.
Caution
Make sure to calculate the total resistance of piping system and deter-
mine the size of pipes before selecting the required head of pumps. If
the pressure loss of total water system is over than designed pressure,
an external water pump shall be installed on piping system in series.
Caution
When initial installation or re-installation is required, remove air by air
vent valve in water plumbing which are installed by local installers to
prevent air trap in the system while charging water.
Caution
Make sure that back flow preventer (check valves) shall be installed on
main supply line to prevent from contaminating the city water.
Caution
There shall be enough space for Service works. It is recommended to
install the make-up water assembly to prevent from contaminating
the city water. - Check valves in the make-up water assembly can pre-
vent running water inside Outdoor Unit from contaminating water
supplies during installation or maintenance works.
5.2
Minimum flow in the heating system
Make sure that the dimensioning of the piping in the heating system is sufficient to get the minimum flow presented below:
HP Size
5kW
9kW
16kW
l/min
7
16
16
N
Insufficient flow in the system may result in high pressure-, or low heat
circulation flow alarms.
Installation Guide
DHP-iQ
Danfoss Heating Solutions
VIJSS102
37
