Adjustment And Safety Devices; Pump Capacity/ Head - Baxi LUNA DUO-TEC MP+ 1.115 Instruction Manual For Users And Fitters

16. ADJUSTMENT AND SAFETY DEVICES

The boiler has been designed in full compliance with European reference standards and in particular is equipped with the following:
• Limit thermostat
circuit overheats. Under such conditions the boiler is blocked and only after the fault has been eliminated can it be ignited again
by pressing .
•
then press the reset button on the boiler control panel.
• Thermal fuse
overheats the exchanger. If this device cuts in, dismount the exchanger and replace the thermal fuse (see paragraph "THERMAL
FUSE REPLACEMENT OF HEAT EXCHANGER").
It is forbidden to disable this safety device.
•
Press to re-establish normal operating conditions.
It is forbidden to disable this safety device
•
boiler is blocked and only after the fault has been eliminated can the boiler be ignited again (see section "FAULTS THAT CANNOT
BE RESET BY THE USER").
• Flame ionisation detector
these conditions, the boiler blocks. Press
•
This device allows the main burner to be ignited only if system pressure is higher than 1 bars.
• Pump post-circulation
The electronically-controlled pump post-circulation function lasts 3 minutes and is enabled, in the heating mode, if the ambient
thermostat causes the main burner to go out.
•
boiler is switched on, the gas supply is open and the system is correctly pressurised.
• Pump anti-block function
If no heat demand is received in the heating and/or DHW modes for 24 consecutive hours, the pumps will automatically start and
operate for 10 seconds.
•
This device is set to 6 bar and is used for the heating circuit. Connect the safety valve to a drain trap. Do not use it to drain the
heating circuit.
•
In case of a heat demand in the heating mode, the appliance can pre-circulate the pump before the burner is ignited. This pre-
circulation phase last from a few seconds to a few minutes, depending on the operating temperature and installation conditions.

17. PUMP CAPACITY/ HEAD

The hydraulic pump is modulating and circulates the water between the boiler and the hydraulic separator.
KEY TO PUMP CHARTS - "SECTION" E
Q RATE OF FLOW
H HEAD
to re-establish normal operating conditions.
41
"SECTION" E
7690785.01 (1-05/18)