Bosch Therm 6000 S Installation And Operating Instructions Manual page 27

Measuring CO (Combustion cover Installed):
2
▶ Open all hot water taps to achieve a flow rate of at least 15
l/m (1 tub and 2 sinks should be sufficient). If heater
display reverts back to P2, open more hot water fixtures to
allow sufficient flow.
+
▶ Press until P1 reappears on the display.
▶ Record the CO reading in P1 in the Table 9 below.
2
Analyser reading may take several minutes to stabilize.
+
▶ Press button until P2 appears. Unit will ramp down to
low fire and the water flow should decrease.
Program
P1
P2
Table 9
Adjusting CO
2
Note: P1 adjustment will change the P2
reading. Confirm the P1 value BEFORE
adjusting the P2 level.
If P1 CO level is out of range:
2
▶ Loosen yellow painted philips screw (Fig. 45,[1]) and
cover should rotate down (Fig. 45, [2]) revealing a
recessed brass slotted screw. (Fig. 45, [3]).
▶ Turning the slotted screw counter clockwise,
will raise P1 CO levels.
2
▶ Turning the slotted screw clockwise,
will lower P1 CO levels.
2
Adjustments to the slotted screw (P1) will
also change P2 CO
▶ After bringing the P1 CO
the button to enter the P2 mode.
+
Therm 6000S
CO values
2
__________%
__________%
levels.
2
readings in proper range, press
2
▶ Verify CO readings in P2 mode.
2
Fig. 45 Adjusting P1 CO
If P2 CO level is out of range:
2
▶ Remove yellow painted #40 Torx cover from the front of
the gas valve, Fig. 45 . A plastic #40 Torx screw will be
revealed.
▶ Turning the plastic #40 Torx screw counter clockwise,
will lower P2 CO levels.
2
▶ Turning the plastic #40 Torx screw clockwise,
will raise P2 CO levels.
2
Note: This screw adjustment is very sensitive
and should be made in small increments. It
may take several minutes for readings to
stabilize.
Fig. 46 Adjusting P2 CO
▶ Verify both P1 and P2 CO
specified in Table 10 .
Installation instructions | 27
level
2
6720608158-38.1AL
level
2
readings are within the ranges
2
6 720 800 095 (2015/11)