Installation and Operation manual ETHOS 36C and ETHOS 54C –1511/05-issue1
Page 17
5.4 Installer programme
If the installer code is entered (after pressing the ’-’ and ’Info’ buttons for 3 sec.), the following parameters can be
set or modified (modify by using the ’+’ and ’–’ buttons). See table 7.
After modifying the parameters, you can exit this programme by pressing the ’Info’ button (3 sec.). The modified
settings will be saved automatically.
5.5 Explanation of options for installer
5.5.1 Programme number J1: Max. CH supply temperature
This option is used to set the max. supply temperature of the central-heating boiler during the central heating mode.
Settings range from 10°C to 90°C.
5.5.2 Programme number J2: Max. CH heat output (fan speed during CH mode)
This option can be used to increase or decrease the max. central heating heat output (40/30°C) as specified on the
data plate, according to the table below:
Ethos 36C Ethos 54C
kW kW
99%
9 13
5.5.3 Programme number J3: Pump operation
This option is used to select a continued central heating pump circulation for the installation. This setting has no
influence on the continued pump circulation after tapping hot water: this overrun time is recorded in parameter ’J5’.
Enter '0' for the pump overrun time for the central heating installation. The length of the pump overrun time is
recorded in parameter ’J4’.
If the pump must operate continuously (e.g. for floor heating), enter ’1’.
5.5.4 Programme number J4: Pump CH overrun time
This option is used for setting the pump overrun time after the heat demand for central heating has finished. Settings
range from 0 to 30 minutes; the default setting is 3 minutes.
5.5.5 Programme number J5: Pump DHW overrun time
This option is used for adjusting the pump-overrun time after heating up the built-in hot water supply.
Settings range from 0 to 30 minutes; default pump overrun time is 1 minute.
Table 6 CH heat output
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