Pressure Adjustment - Bosch WR 11 B Installation Manual And Operating Instructions

14 | Adjustments (must be carried out only by quali ed technicians)
Power may be tuned according to the burner pressure process,
for which a manometer with U-
required.
6.2

Pressure adjustment

Accessing the adjusting screw
Remove the front part of the heater (
Connecting the pressure gauge
Unscrew the shut-o screw.
Connect the pressure gauge to the measuring point for the
burner pressure.
Fig. 13 Pressure measurement points
Maximum gas ow adjustment
Remove the screw seal (Fig. 14).
Turn on the heater with the power selector set to the left
(maximum position).
Fig. 14 Maximum gas ow adjusting screw
Open various hot water taps.
6720648592 (2014/05)
shaped connecting tubes is
section 5.3).
6720607418-01.3V
6720607418-02 2V
Using the adjusting screw, regulate the pressure until
obtaining the values indicated in the table 8.
Seal the adjusting screw once again.