Nibe HPAC 45 Installateurhandbuch Seite 15

Control
The cooling supply to the building is controlled by the
supply temperature settings in menu 1.9.5.
When the cooling requirement is large and passive
cooling is not sufficient, active cooling is engaged at the
set degree minute value.
When the demand for cooling has stopped, the heat
pump may only return to heating mode after at least
2 hours and vice versa (adjustable in menu 1.9.5).
Passive cooling
When passive cooling is required, the circulation pumps
in the heat pump start, to circulate fluid from the surface
soil/rock collector through the building's distribution
system and cool the building. Cooling comes from the
surface soil/rock collector.
Active cooling.
With active cooling the compressor in the heat pump
starts and the resulting cold medium circulates to the
building's distribution system and the heat circulates
out to the surface soil/rock collector.
Supply pump exercise
The circulation pump exercises 12 hours after last oper-
ation.
HPAC 45 | GB 15