Minimum Flow In The Heating System - Danfoss DHP-iQ Installation Manual

Installation Guide
Water pipe and connections shall be cleaned by using water or cleaner
Caution
before operating the unit at first time.
Considering external static pressure and water pump performance, se-
Caution
lect water plumbing specification and under floor loofs.
Make sure to calculate the total resistance of piping system and deter-
Caution
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.
When initial installation or re-installation is required, remove air by air
Caution
vent valve in water plumbing which are installed by local installers to
prevent air trap in the system while charging water.
Make sure that back flow preventer (check valves) shall be installed on
Caution
main supply line to prevent from contaminating the city water.
There shall be enough space for Service works. It is recommended to
Caution
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
l/min
Insufficient flow in the system may result in high pressure-, or low heat
N
circulation flow alarms.
Danfoss Heating Solutions
DHP-iQ
5kW
7
9kW
16
VIJSS102
16kW
16
37