Bosch Therm 6000 S Installation And Operating Instructions Manual page 28

28 | Installation instructions
Measuring CO (Combustion cover Installed):
2
Open all hot water taps to achiev
m (1 tub and 2 sinks should be su cient). If heater display
reverts back to P2, open more hot water xtures to allow
su cient ow.
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 re and the water ow should decrease.
Program CO values
2
P1 __________%
P2 __________%
Table 9
Adjusting CO
2
Note: P1 adjustment will change the P2
reading. Con rm 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.
6 720 800 095 (2014/05)
e a ow rate of at least 15 l/
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 minu tes for readings to
stabilize.
Fig. 46 Adjusting P2 CO
Verify both P1 and P2 CO
speci ed in Table 10 .
level
2
6720608158-38.1AL
level
2
readings are within the ranges
2
Therm 6000S