HAMWORTHY HEATING LTD
46
Merley Boiler Sequence Controller
500001210/D
Line no.
Operating line
1
Hours/minutes
2
Day/month
3
Year
5
Start of summertime
6
End of summertime
6 The settings in detail
6.1 Time of day and date
The controller has a yearly clock with time of day, weekday and date. To
ensure the controller
’
s functionality, both the time of day and the date must
be correctly set.
Summer
-
/ wintertime
changeover
The dates set for the changeover from wintertime to summertime
-
, and vice
versa,
-
ensure that on the first Sunday after the set date the time of day will
change from 02:00 (wintertime) to 03:00 (summertime), and from 03:00
(summertime) to 02:00 (wintertime).
6.2 Operator unit
Line no.
Operating line
20
Language
22
Info
Temporary
Permanently
26
Operation lock
27
Programming lock
28
Direct adjustment
Automatic storage
Save with acknowledgment
Operation and display
Info
Temporarily:
After pressing the info button, a change to the
“
predefined
“
basic display is made after a maximum of 8 minutes or by
pressing the operating mode button (with the QAA78
…
only 2
minutes) .
Continuously:
After pressing the info button, a change back to the
“
new
“
basic display is made after a maximum of 8 minutes. The info
value selected last will be adopted by the new basic display.
This setting is not possible with the QAA78
…
Operation lock
When operation lock is activated, the following operating elements can no longer be ad-
justed:
Heating circuit operating mode, DHW operating mode, room Comfort setpoint (setting
knob), and presence button.
Programming lock
When programming lock is activated, parameter values can still be displayed, but can
no longer be changed.
•
Temporary deactivation of the programming lock.
Within the programming level, the programming lock can temporarily be
overridden. To do this, press the OK and ESC buttons simultaneously for 3
seconds. Temporary deactivation of the programming lock is maintained until
programming is quit.
•
Constant deactivation of programming lock.
First, make the temporary deactivation, then go to operating line
“
Programming
lock
“
(operating line 27) and deactivate the programming lock