6 x Operation
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FA ROTEX HeatPumpSolarUnit - Part 2 - 05/2009
[C] - Priority Solar Support
The default setting is that heating the water with the ROTEX HeatPumpSolarUnit is given priority over solar heating. This is done
so that if the circulation in the solar cycle is very weak, there is no lack of hot water or in the event that the sun only started to
shine just before the expected phase of hot water consumption (e.g. in cloudy weather).
This default setting can be changed so that whenever solar heat is available, heating of the hot water storage tank is stopped
by the ROTEX HeatPumpSolarUnit (providing it is active at the time), and heating provided instead by solar power. An aid to
setting your priorities is shown in Fig 6-18.
The following setting options are available:
– [C-00] Solar priority: 0 =ROTEX Solaris system, 1 = ROTEX HeatPumpSolarUnit
Fig.6-18 Sequence for determining the priority of the parameter [C-00]
T
HP
Water temperature of heat pump at temperature sensor in the
hot water storage tank
T
HP ON
ON temperature of heat pump
T
K
Water temperature at Solaris high performance flat solar panel
T
SPmax
Maximum water temperature in the hot water storage tank
T
SPS
Water temperature of the ROTEX Solaris system at the
temperature sensor in the hot water storage tank
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