Installation & Servicing instructions
AT
AG XL
52
13.2.1
Emission check
In order to be able to check on the boiler’s emission during its years of operation, it is
recommended to measure the maximum air displacement of the boiler on commission-
ing. This value may be different for each boiler type.
This measuring is only worthwhile if the value is known on commissioning.
The following tasks have to be carried out to enable measuring this value:
- Press down the arrow buttons simultaneously for 2 seconds.
The screen turns green;
- Press the right arrow button until you see Service chapter.;
- Press OK;
- Press the right arrow button until Airflush is displayed;
- Press OK;
The screen displays Airflush off;
Only for XL110 and XL140:
- Press the right arrow button to select burner A.
The exchanger symbol displays the selected burner (AB, A or B)
- Open the top test nipple (fig. 13.2.1.a);
- Connect the hose of the digital pressure meter to the top test nipple of the gas valve.
Measuring is only allowed using the top test nipple (refer to arrow).
- Press on the + button until the maximum value (100%).
The ventilator will start running up to its max. revolutions per minute RPM (burner
stays on)
- Measure the under-pressure and record the value.
During the next boiler check, the under-pressure value may have decreased by 20%
max. compared to the value on commissioning. If this value has decreased less than
20% the boiler does not require any maintenance.
- Press the – button until
off
is displayed (keep pushed down)
This ends the procedure for burner A.
Only for XL110 and XL140:
- Press the return button 1x
- Press the right arrow button to select burner B.
The exchanger symbol displays the selected burner (AB, A or B)
Repeat the procedure for burner B.
- Press the return button to return to the original read-out.
Measuring point air flow figure 13.2.1.a
OUT: 0-pressure adjustment
MIN: Gas pressure
