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Bosch Greentherm 9800 SE 160/199 Manual page 52

Indoor residential and comme rcial tankless water heaters
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52 | Troubleshooting
▶ Touch the symbol
The appliance will start the auto adjustment of the
maximum gas flow.
The auto adjust process takes several
minutes.
▶ Do not interfere with the appliance
during the auto adjustment process.
Fig. 49
L1 gas adjust value
▶ Record the L1 gas adjustment value in table 23, after
check mark symbol appears in the display.
▶ Touch the symbol
▶ Touch symbols
or
▶ Touch the symbol
▶ Touch symbols
or
▶ Touch the symbol
The appliance is in the position for adjustment of the
maximum Air flow.
▶ After the appliance has stabilized for 2 to 5 minutes, the
CO
probe should be inserted as per section 8.9.1.
2
▶ Touch symbols
or
acceptable value as indicated in table 24.
▶ Record the A1 air adjustment and CO
table 23.
▶ Touch the symbol
▶ Touch the symbol
Display screen reads P1 Max. Power.
The adjustment of the maximum gas and air flow is
completed.
▶ Once P1 is adjusted remove CO
8.9.3 Adjusting the minimum flow (Parameter P2)
After adjusting parameter P1 and to avoid
damaging the CO
probe before measuring and adjusting
parameter P2.
6 720 816 815 (2016/10)
.
to finish the L1 Gas adjust.
to select P1 Max. Power.
to enter P1 menu.
to select A1 Air Adjust.
.
until the CO
analyzer shows an
2
values in the
2
.
.
analyzer.
2
analyzer by removing the
2
▶ Access to menu P2.
Appliance will ramp down to low fire and the water flow
should decrease. Wait a few minutes until stabilize.
▶ Touch symbols
or
▶ Touch the symbol
The appliance will start the auto adjustment of the
minimum gas flow.
The auto adjust process takes several
minutes.
▶ Do not interfere with the appliance
during the auto adjustment process.
Fig. 50
L2 gas adjust value
▶ Record the L2 gas adjust value in table 23, after check
mark symbol appears in the display.
▶ Touch the symbol
▶ Touch symbols
or
▶ Touch the symbol
▶ Touch symbols
or
▶ Touch the symbol
The appliance is in the position for adjustment of the
minimum Air flow.
▶ After the appliance has stabilized for 2 to 5 minutes, the
CO
probe should be inserted as per section 8.9.1.
2
▶ Touch symbols
or
an acceptable value as indicated in table 24.
▶ Record the A2 air adjustment and CO
table 23.
▶ Touch the symbol
▶ Touch the symbol
Display screen reads P2 Min. Power.
The adjustment of the minimum gas and air flow is
completed.
Greentherm 9800 SE 160/199 | SEC 199
to select U2 - L2 Auto Adjust.
.
to finish the L2 Gas adjust.
to select P2 Min. Power.
to enter P2 menu.
to select A2 Air Adjust.
.
until the CO2 analyzer shows
values in the
2
.
.

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