17 Description of function
2022/07
99E13331xx-mub-en - V08
33
All parameters / functions can be seen or read via the remote control, but they cannot be
modified via the remote control. The parameters can exclusively be modified directly on-site at
the FC3.10 controller.
The function "
Remote control / write protection
" can separately be activated or deactivated for
the BMS connection of the single controller, MB3.10 or the WiFi module. The additional menu
items appear at the display of the FC3.10 controller ("
WiFi module
", "
MB3.10
") if these are
connected to the FC3.10 controller and are put into operation (e.g. "
Scan Modbus
" for MB3.10,
see chapter 5.7). If required, this (de)activated function can be protected by a personalised
password to avoid modifications (on/off) by third parties. Please store this password on a safe
place because the activated function / the password cannot be reset, even if you reset to factory
settings.
16.2
Minimum speed*
In this menu item, you can adapt the minimum speed of the primary pump.
The minimum speed is an important setting parameter which is exclusively responsible for the
control quality in the low load operation (small withdrawal quantity). This minimally actuated
PWM value is meant to guarantee the circulation of the heating water (the smallest flow rate)
through the domestic hot water module.
An additional integrated check valve can cause that there is no circulation in the primary circuit
at low withdrawal flow rates. This can be solved by slightly increasing the minimum speed.
*Settings only visible with installer code (see chapter "User code").
17
Description of function
17.1
Circulation
By means of a circulation function, the drinking water in
the circulation line is heated to the desired nominal
temperature. The designated circulation pump is
actuated by the controller via the PWM 2 connection.