6
Concord CXSD -
User's Guide
If the [YES] button is pressed and the programmer is in an
OFF period the boiler will be brought on for one hour,
subject to external controls. If the boiler is ON with less than
one hour to a programmed OFF period then the difference
between this time and one hour is the time of the extended
on period. If the boiler is in the 24 hour mode then this
option will have no effect.
If this advance has been selected, to cancel it then the
same procedure should be followed but the [NO] button
pressed.
PROGRAMME HOURS
Enables a user-timed programme to be entered.
The following display will be available:-
with the hours, 06, flashing.
Using the [UP] or [DOWN] button select the correct hour,
and press [ENTER]. The
minutes
will now flash and the
correct minutes should be selected, using the [UP] or
[DOWN] button followed by pressing [ENTER].
This will cause the hours to flash and if the correct ON time
has been entered the [EXIT] button should be pressed. The
display will now show the OFF for time zone one.
This procedure should be repeated for all 3 time zones for
Monday.
After the last [EXIT] the display will ask if this day's
programmes require to be copied to Tuesday. If the [YES]
button is pressed Tuesday's programme will be the same
as Monday. This action can be repeated for all the days or
as many as required,
If the [NO] button is pressed then all 3 time slots will need
to be programmed with the required times.
TEMPERATURE SET POINT
Enables the temperature at which the boiler is required to
operate to be set. It has a range of 60 - 85
o
C.
Using the [UP] or [Down] button select the TEMP SET from
the menu and press [ENTER]. The following will be
displayed:-
with the temperature flashing.
8 USING THE BOILER FEATURES AND CONTROLS - continued
STATUS
Enables the selection of programme hours, all day usage or
24 hour.
If the "Programme Hours" option is selected the boiler will go
on and off subject to the times programmed.
If ALL DAY usage is selected the boiler will come on at the
first "ON" period selected and off on the last "OFF" period
selected, ignoring all other time settings. Based on the above
default programme this means the boiler would run, subject
to any other external controls, from 07:30 to 22:00 hours.
If 24 HOUR is selected the programme times will be ignored
and the boiler will run subject to the external controls until one
of the other options is again selected.
SET TIME/DATE
Enables the correct time and date to be entered.
The display will show a flashing day of the week as follows :-
The correct day can be selected by use of the [UP] or [Down]
button and when correct the [ENTER] button should be
pressed. The time and date will now be displayed as
follows:-
with, first, 2 digits, the hours, flashing.
By use of the [UP] or [Down] button the correct hour is
selected and the [ENTER] button pressed. The minutes will
now be flashing and, by use of the [UP] or [DOWN] button, the
correct minutes selected and the [ENTER] button pressed.
This method is repeated until the correct day, month and year
are selected. On selecting the correct year and pressing
[ENTER] the hours will flash then, if all the data is correct, the
[EXIT] button should be pressed for the control to accept this
information.
ADVANCE
Enables the programme to be advanced by one hour.
The following display will be available:-
