HAMWORTHY HEATING LTD
29
PUREWELL
Vari
Heat he
500001170/K
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 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 - Fault Error code display
(LMU6.. version 2.08)
In the event of a nonvolatile LMU... lockout position, fault is continually displayed. In addition, the diagnostic code
on the display flashes (refer to figure 8.2.4).
To cancel the lockout position, press lockout reset button
for at least 2 seconds.
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 - 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.