SYX66x Commissioning Guide
V1.10.3 300117
Page 33 of 61
9.
Overrides Menu Pages
9.1
Switch Page
Panel Switch - This allows the user to fix the mode of the controller
– Auto, Summer, Continuous, Frost, Service
Extend Active/Waiting Indication
– This will be active when a time extension has been requested. If the actual time
program is still active then the indicator will flash. When the time program has ended then the extension period will
commence and the indicator will turn on. The active indicator will turn off when the extension period has ended or
has been cancelled. The extension Active indicator will also turn on if the time extend external input is used. The
HWS Extend Active indicator will not illuminate during the external override condition unless the HWS is linked to
use the override input.
Time Extend
– Auto/Extend/Reset – The user can trigger and extended period of heating or Hot Water by setting to
Extend. The period of time to be extended for is set on the Values page. The value should be set to the required
number of hours before triggering the extension period. The setting will automatically revert to the Auto condition
after 3 seconds ready for the next request. A period of extension can be cancelled by setting the Time Extend setting
to the Reset option. This can be used to cancel both waiting and active overrides. An extension can be set during
the day period in advance of the time schedule finishing. The controller knows that the time schedule is active and
so will enter into a Waiting Condition until the end of the active period.
Override Viewer
– Indicators will show which plant items have been taken out of Auto Control. The controller HAND
LED will be illuminated to indicate a manual override also. The override viewer provides a quick way to see which
items are in Hand. The indicators will be Grey if the plant is running as expected. The indicators will be Red to
indicate that the plant item is in Hand. All indicators must be grey for the Hand LED on the controller facia to switch
off:
