Commissioning The Boiler; Adjusting The Ch And Dhw Flow Temperature; Operating Modes - Baxi DUO-TEC MAX+ Instruction Manual

1. COMMISSIONING THE BOILER

To light the boiler correctly, proceed as follows:
• Check that the system pressure is correct (section 7);
• Power the boiler;
• Open the gas tap (yellow, positioned under the boiler).
This appliance is equipped with a pre-heating function. This function improves the hot water comfort providing hot water
immediately during a D.H.W. request.
Key to BUTTONS
DHW temperature adjustment
(+ to increase the temperature and – to decrease it)
Heating water temperature adjustment
(+ to increase the temperature and – to decrease it)
Boiler operating information
Operating mode:
DHW – DHW & Heating – Heating Only
Off – Reset – Exit menu/functions
Key to SYMBOLS
Off: heating and DHW disabled
(only boiler anti-freeze protection is active)
Fault preventing the burner from lighting
Boiler/system water pressure low
Technical Service Centre call-in
Manually resettable fault (
Fault in progress

1.1 ADJUSTING THE CH AND DHW FLOW TEMPERATURE

Press and respectively to adjust the CH and DHW flow temperature. When the burner is lit, the display shows the
symbol .
HEATING: while the boiler is operating in the heating mode, the display shows the flashing symbol
temperature (°C).
When connected to an External Sensor,
DHW: While the boiler is operating in the DHW mode, the display shows the flashing symbol
(°C).
When the function of pre-heating is active, the symbol

1.2 OPERATING MODES

SYMBOL
OPERATING MODE
DISPLAYED
DHW
DHW & HEATING
HEATING ONLY
)
indirectly adjust the room temperature (factory setting 20°C - see section 10.2.1).
is flashing even without any D.H.W. request.
To enable the appliance in DHW - Heating or Heating only press
and choose one of the three available modes.
To disable the boiler operating modes whilst keeping the anti-freeze function
enabled, press for at least 3 seconds. Just the symbol
display (the display backlighting flashes if the boiler is blocked).
27
Burner lit
DHW operating mode enabled
Heating mode enabled
Programming menu
Boiler information menu
Set unit of measurement (SI/US)
and the heating delivery
and the heating flow temperature
7219623.01 (1-04/15)
repeatedly
appears on the