6 720 810 560 (2016/06)
Optiflow Professional
18 | Regulating the gas (only for authorised technicians)
▶ Loosen the test point screw of the air pressure test
point.[A]
▶ Connect the negative "-" side of the pressure gauge to the
air pressure test point.[A]
▶ Press
until the display shows "P1".
▶ Press the button
.
Display will show "E".
▶ Press
until the display shows "L1".
▶ Press the button
.
The appliance is now ready for adjustment of the maximum
gas flow.
▶ Open a hot water tap.
▶ Press
or
until the pressure gauge shows the
value indicated in tab. 13.
▶ Press
for 3 seconds.
The displayed value flashes as a sign of confirmation.
▶ Press .
Display will show "L1".
▶ Close the hot water tap.
▶ Press
until the display shows "E".
▶ Press the button
.
Display will show "P1".
The adjustment of the maximum gas flow is complete.
5.3.3 Adjusting the minimum flow (Parameter P2)
▶ Press
until the display shows "P2".
▶ Press the button
.
Display will show "E".
▶ Press
until the display shows "L2".
▶ Press the button
.
▶ Open a hot water tap.
The appliance is now ready for adjustment of the minimum
gas flow.
▶ Press
or
until the pressure gauge shows the
value indicated in tab. 13.
▶ Press
for 3 seconds.
The displayed value flashes as a sign of confirmation.
▶ Press .
Display will show "L2".
▶ Close the hot water tap.
▶ Press
until the display shows "E".
▶ Press the button
.
Display will show "P2".
▶ Simultaneously press the
,
and
for 3
seconds.
Display will show the temperature selected.
▶ Disconnect the pressure gauge from the test points [A] and
[B].
▶ Tighten the shutter screws of the test points [A] and [B].
The adjustment of the minimum gas flow is complete.
5.3.4 Adjusting pressure at the burner (Parameter P0)
If it is not possible to reach the differential
pressure value:
▶ Adjust the pressure in the burner
(section 5.3.4) and repeat the
procedure for adjusting maximum flow.
If it is not possible to reach the differential
pressure value:
▶ Adjust the pressure in the burner
(section 5.3.4) and repeat the
procedure for adjusting minimum flow.
Natural gas H
Universal
LP gas
Ø injector
GWH12
1.7
1.3
GWH16
2.0 + 1.7
1.5 + 1.3
GWH20
Dynamic
connection
pressure
(kPa)
GWH12
GWH16
GWH20
1.13
2.75
Burner
pressure
(kPa) - P0
GWH12
GWH16
GWH20
0.12
Differential
pressure of
the burner
MAX (kPa) -
P1
GWH12
0.46 - 0.50
0.63 - 0.67
GWH16
0.37 - 0.41
0.63 - 0.67
GWH20
0.33 - 0.37
0.44 - 0.49
Differential
pressure of
the burner
MIN (kPa) -
P2
GWH12
0.05 - 0.08
0.05 - 0.08
GWH16
0.05 - 0.07
0.05 - 0.07
GWH20
0.04 - 0.08
0.05 - 0.08
Table 13 Pressure of the burner
Burner pressure adjustment is only required
if “L1” and “L2” cannot be achieved
according to table 13.
