User Instructions for GECO GH21RA controller
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Page 20 Edition I
19.06.2013
Date and time –
In order to ensure that all of the controller functions work correctly and at
the optimum level, set the correct time and date.
Display selection –
The user can set a
personal profile screen, and customise the type of
information that will be shown. The settings menu offers several choices, with ‘standard’ set by
default.
7.
Description of additional functions
7.1.
DHW priority (hot water)
The GH21RA controller can be set to pump hot water as a priority. If you select this mode,
water heating becomes the primary function of the controller, with heating (CH) secondary.
This is only available in the second configuration. To enable this function, set the value to
"yes" in the menu
.
To enable this function, set the value to ‘
YES
’ in the main menu.
7.2.
Summer function
The GH21RA controller is equipped with a summer mode, which can be used in the
summer to turn off the CH pump so that the boiler only heats water. For this function to work,
a system installation supporting a DHW pump must be selected. This is only available in the
second configuration.
To enable this function, set the value to ‘
YES
’ in the main menu.