Rotex HPSU compact 508, Инструкция по эксплуатации

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4 x Parameter settings
34 BA ROTEX HPSU compact 2 - 04/2011
[5] - Bivalence temperature and priority temperature of room heating
The bivalence temperature is relevant for operating the internal backup heater (BUH).
When the "Bivalence temperature" function is activated, and the outside temperature is the same or lower than the bivalence
temperature defined, operating the backup heater (BUH) is limited to low outside temperatures.
If the "Bivalence temperature" function is deactivated, it is possible to operate the backup heater (BUH) at all outside
temperatures. However, activating this function reduces the run time of the backup heater (BUH).
The priority temperature of the room heating is relevant for operating the 3-way reversing valve and the optional booster
heater (BOH) in the integrated hot water tank.
When the function "Priority temperature" is activated, and the outside temperature is the same or lower than the set priority
temperature, the hot water is only heated by the booster heater (BOH). This ensures that the full output of the heat pump is only
used for room heating.
The target value correction for hot water (corrected higher target value) ensures that when the outside temperature either
reaches or falls below a predefined value, the entire heat output of the water in the hot water storage tank remains approximately
the same.
The following setting options are available:
– [5-00] Status bivalence temperature:
0 = Function bivalence temperature is switched off.
1 = Function bivalence temperature is switched on.
– [5-01] Bivalence temperature: Outside temperature at which or below the backup heater (BUH) is activated to support the
room heating.
– [5-02] Priority during room heating:
0 = When the temperatures reaches or falls below the priority temperature, the heat pump is used equally for room heating
and hot water.
1 = When the temperatures reaches or falls below the priority temperature, the heat pump is only used for room heating.
– [5-03] Priority temperature of room heating: Outside temperature at which, or at a lower temperature, the hot water is
exclusively heated by the booster heater (BOH).
– [5-04] Target value correction for hot water:
Target temperature for the required water temperature in the hot water storage tank when the outside temperature is the
same as or falls below the bivalence temperature in parameter [5-01] and if the parameter [5-02] is set to 1.
The performance of the heater during its connection with regard to the requirements for bivalence temperature
and priority temperature, is dependent on the settings in the commissioning parameters BOH* or BUH* on the
additional control unit HPRA1 (see section 4.3.2).
T
A
Ambient temperature (outside air)
T
U
Target temperature for hot water (as set on main
control unit (HPR1))
T
Set
Water temperature
(Grey area = booster heater active)
Fig. 4-4 View of the control system with active "Bivalence temperature and
priority temperature of room heating"