Dimplex SOLCU Installation And Operating Instructions Manual page 49

[................................] [................................]
Display: 3.10 Display: 3.10
[Stagnation reduction] [Stagnation reduction]
[.............................................] [.............................................]
Display: 3.11 Display: 3.11
[Holiday function / [Holiday function /
recooling] recooling]
Display: 3.11. Display: 3.11.
EN
  7.3.11 Stagnating reduction function
This function delays the end of the storage tank's loading phase in order
to reduce, or even to avoid, the system's stagnation times at high temper-
atures. This causes the pump to be stopped repeatedly, and only briefly
switched on again when high collector temperatures arise. With higher
collector temperatures, the efficiency decreases significantly, thus loading
takes longer. This delays the beginning of any stagnation time. Stagnation
reduction can only be activated or deactivated.
NOTE
It is possible that this causes the storage tank to be loaded with a higher
solar temperature. However, the set maximum storage tank temperature
always has priority. This continues to be observed, as do other safety
limits.
Activating the stagnation reduction function
"Functions" submenu selected, see "Selecting a function"
✓
(see chapter 7.3.1).
Stagnation reduction function activated, see "Activating a function"
✓
(chapter 7.3.1).
  7.3.12 Holiday function/recooling
If the user extracts too little hot water, or none at all (e.g. during holidays),
a completely heated storage tank can cause the solar energy system to
begin evaporation prematurely, and the system is thus subjected to a
higher thermal load.
When the holiday function is activated, and the temperature in the stor-
age tank reaches 10 K below the set maximum storage tank temperature,
the controller attempts to systematically unload the lower part of the
storage tank at night, until the set minimum storage tank temperature
is reached.
Defining the minimum storage tank temperature
"Functions" submenu selected, see "Selecting a function"
✓
(see chapter 7.3.1).
Holiday function/recooling activated, see "Activating a function"
✓
(chapter 7.3.1).
: press button.

 
The display for setting the minimum storage tank temperature

appears.
SET: press button.

The min value flashes.

: Set the minimum temperature value for the storage tank.

SET: press button to confirm.

NOTE
This function should only be activated during long periods of absence.
When you return, please deactivate this function in order to avoid
unnecessary wastage of energy via the collector circuit.
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