Bosch HDS8055U Instructions D'installation page 24

Double-ring high-output burner
Place the burner cup B onto the burner C and place
4.
the burner cover A onto the burner cup B.
Refit the grates.
5.
Setting the minimum gas flow
Remove the control knob and knob ring.
1.
Turn the inner setting screw clockwise gently until it
2.
bottoms out.
Note: In case of conversion from propane gas to
natural gas, turn out all bypass nozzles for 1/2 turn.
Small burner/large burner
24
Dual-flame burner:
Replace the control knobs.
3.
Light each burner individually and check for flame
4.
stability on low setting.
If required, loosen the setting screw to increase the
5.
gas flow.
Ensure that the flame does not go out when the gas
6.
flow is quickly changed between maximum and
minimum, and vice versa. The optimum setting is
achieved when the height of the small flame is
approx. 1/8" (3 to 4 mm).
Refit the control knob and knob ring for the gas
7.
burner.
Repeat steps 2 to 8 until all of the gas burners have
8.
been set.
Connect the appliance to the power supply.
9.
Checking functions after the conversion:
The flames must not go out when switching over swiftly
from the high to the low setting.
Note: Stick the adhesive label included with the nozzle
set over the rating plate of the appliance to document the
changeover to a different gas type.
Test for Gas Leaks
After the conversion it is important to verify the leakages.
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Conversion to natural gas
This appliance is shipped from the factory for use with
natural gas. If the appliance has been converted to
propane gas before, you have to convert it to natural gas
again.
Check the orifices for the right nozzles and, if required,
replace them. See "Replacing the main control nozzles".
Adjust the minimum gas flow. See "Setting the minimum
gas flow". The optimum setting is achieved when the
height of the small flame is approx. 1/8" (3 to 4 mm).
Set the pressure regulator for natural gas. Turn the
spring plate the other way around as shown in "Setting
the pressure regulator for propane gas".
Save the orifices removed from the appliance for future
use.