Vaillant 824/2 E Instructions For Installation Manual page 28

7 Gas supply adjustments (Commissioning Part II)
Note!
Following adjustment of the central heating
output, the new output can be checked using
the gas rate table as detailed.
1
Fig. 7.3: Using burner pressure to check and adjust the heating
system partial load (picture shows a turboMAX plus boiler)
Note!
This illustration shows the U-tube pressure
gauge connected to a system configured to run
on natural gas. When connecting the U-tube
pressure gauge to a system running on LPG,
please refer to Fig. 7.2 on page 27.
• Simultaneously press the "i" and "+" buttons keys.
• Keep the "+" button pressed until "d.0" is displayed.
(The display runs from "d.0" to "d.99" before
restarting again at "d.0".)
28
Supplied By www.heating spares.co Tel. 0161 620 6677
• Press the "i" button and a value between 1 and 15 will
be displayed.
• Use the "+" or "-" buttons to increase or decrease the
value. Observe the U-gauge as the button is pushed
and stop pushing when the required main burner
pressure has been achieved.
• After setting, press and hold the "i" button for five
seconds - or until the display stops flashing. The new
setting value is now memorised. The new main burner
pressure can now be checked. If the new output is not
correct repeat steps 3 to 5.
• To return to normal mode, press the "i" and "+"
buttons simultaneously.
The adjustment mode is also cancelled if no button is
pushed for a period of four minutes.
• Record central heating operating pressure in the
Benchmark Log Book along with the heat input (kW)
and temperature difference between flow and return.
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R1
~ 5 s