Adjusting Room And Dhw Temperatures; Description Of Button ( ) (Summer - Winter - Heating Only - Off) - DeDietrich MS 24 MI FF Operating And Installation Instructions

4. ADJUSTING ROOM TEMPERATURE AND DHW TEMPERATURE
The system must be fitted with a room thermostat for controlling indoor temperature.
+/-
Adjust the room temperature ( ) and the DHW temperature ( ) by pressing the respective (figure 1). The ignition
of the burner is shown on the display with the symbol ( ) as described in section 3.
HEATING
While the boiler is operating in the heating mode, the display (figure 1) shows the flashing symbol ( ) and the heating
delivery temperature (°C).
DOMESTIC HOT WATER
While the boiler is operating in the DHW mode, the display (figure 1) shows the flashing symbol ( ) and the DHW output
temperature (°C).
5. DESCRIPTION OF BUTTON (Summer - Winter - Heating only - Off)
Press this button to set the following operating modes:
• SUMMER
• WINTER
• HEATING ONLY
• OFF
In the SUMMER mode, the display shows ( ). The boiler satisfies requests for DHW only while central heating is NOT
enabled (ambient frost protection function active).
In the WINTER mode, the display shows ( ). The boiler satisfies requests for both DHW and central heating (am-
bient frost protection function active).
In the HEATING ONLY mode, the display shows (
). The boiler satisfies requests for central heating only (ambient frost
protection function active).
In the OFF mode, the display shows neither of the above two symbols (
) ( ). In this mode, only the ambient frost
protection function is active while requests for DHW and central heating are not satisfied.
OPERATING INSTRUCTIONS 71.03982.03 - EN
71