Operation Manual

19
♦ Displaying the instantaneous boiler output
If you press (or double press) the (SELECT) button (5), the display dialogue of the instantaneous boiler
output opens. This dialogue is indicated by the letter P in the first position of the display. The output is shown in
kW (P.2.5 =2.5 kW, P.18 = 18 kW etc.).
8. User menu
♦ Accessing the user menu
To access the user menu, press the O/I (MENU) button (3) for more than 2 seconds. To move between the
menu items, press the ▲ , ▼ buttons (1). If you want to change the input values, press the ▲ , ▼ buttons (2).
The entered value in the menu must be confirmed by pressing the O/I (ENTER) button (4). Exit the menu and
data input by pressing the O/I (MENU) button (3).
The menu item (the set variable) and its value display alternately (e.g. Et1 – 1.6 – Et1 – 1.6...). The menu
item is displayed either by means of mnemotechnical texts (Et1) or numerical parameters (P1.1). The display
mode is set in the menu by way of the diS (P3.2) item.
♦ User menu items
Group 1: Integrated equitherm regulation parameters
Equitherm regulation defines the desired value of heating water temperature depending on the outdoor
temperature. The selection of parameters for the calculation depends on the specification of the binary NU
(night moderation).
If NU is disconnected, the following is true:
the desired heating water temperature value = (20 – outdoor temperature) * Et1 + 20 + ET2
If NU is connected, the following is true:
the desired value of heating water temperature = (20 – outdoor temperature) * Et3 + 20 + ET4
The desired outlet heating water temperature value is limited in the range between to_ (P3.3) and to¯ (P3.4).
Equitherm regulation always requires the connection of an outdoor temperature sensor and the heating mode
setting of rto = EtE (P3.1=2).
Et1 P1.1 Equitherm regulation parameter, curve slope. True for a disconnected NU.
The setting range falls between 0.1 .. 6.0, step of 0.1, leading value is 1.6.
Et2 P1.2 Equitherm regulation parameter, curve shift. True for a disconnected NU.
The setting range is -20°C .. +40°C, step of 1°C, leading value is 0.
Et3 P1.3 Equitherm regulation parameter, curve slope. True for a disconnected NU.
The setting range falls between 0.1 .. 6.0, step of 0.1, leading value is 1.6.
Et4 P1.4 Equitherm regulation parameter, curve shift. True for a connected NU.
The setting range falls between -20°C .. +40°C, step of 1°C, leading value is -5.