HAMWORTHY HEATING LTD
27
WESSEX MODU
MAX
100 SERIES
500001123/C
8.2.7 - Start-up / initialisation
On startup after power-On, or after a lockout reset, the setpoints will be initialized.
These setpoints apply until a first adjustment is made (e.g. via the screen display or PC parameterization):
After a readjustment, these values will be overwritten with the new value and permanently stored in the LMU.
When a new startup is made, or after power-On, the previous settings will be stored in the LMU.
Also, the software version number of the operator module and that of the connected type of LMU... will be
delivered.
8.2.8 - FUNCTIONS
8.2.8.1 - Chimney Sweep function
The chimney sweep function enables the boiler to be started up in heating mode by pressing both
buttons
simultaneously for more than 3 seconds but for no more than 6 seconds.
On the display, the upper arrow of the maintenance function flashes
and the currently selected
temperature appears.
This function serves for making measurements on the boiler. When the chimney sweep function is activated,
the boiler will deliver maximum output until the limit thermostat cuts out.
To ensure maximum supply of heat, the chimney sweep function generates the forced signal for heat supply.
During the time that the Chimney Sweep is activated, an appropriate status code is delivered.
To close the function, press button
8.2.8.2 - Controller Stop function
The controller stop function enables the boiler’s heat output to be adjusted manually in heating mode by
pressing both buttons
simultaneously for more than 6 seconds.
On the display, the lower arrow of the maintenance function flashes
and the currently selected
temperature appears and the display shows the adjusted relative boiler output.
The function serves for making measurements on the boiler and allows the boiler output to be increased /
decreased by pressing
buttons .
Minimum and maximum output can be directly selected by pressing the line selection buttons
Note:
- If the controller stop function is triggered via PC tool ACS420, the current setpoint of burner output will
appear on the display, but the settings are locked.
To close the function, press button
8.2.8.3 - Time of day function
To ensure that this function operates, the time of day and time settings must be correctly set. Refer to section,
Parameter settings for Enduser, to setup the program.
Note:-
each time button
is pressed during the time setting, the seconds are set to 0 and the clock
continues to run while making the setting.
8.2.9 - Heating circuit operating modes
The control provides 4 different heating circuit operating modes for LMU... heating circuit 1. They can be
directly selected depending on the requirements - see figure 8.2.9
The operating modes are selected by pressing button .
On the LCD, a pointer below the respective symbol points to the selected heating circuit operating mode.