Bosch Therm 6000 S - Page 28

6 720 800 095 (2014/05) Therm 6000S
28 | Installation instructions
Measuring CO
2
(Combustion cover Installed):
 Open all hot water taps to achieve a ow rate of at least 15 l/
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
2
reading in P1 in the Table 9 below.
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.
Adjusting CO
2
If P1 CO
2
level is out of range:
 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
2
levels.
 Turning the slotted screw clockwise,
will lower P1 CO
2
levels.
 After bringing the P1 CO
2
readings in proper range, press
the button to enter the P2 mode.
 Verify CO
2
readings in P2 mode.
Fig. 45 Adjusting P1 CO
2
level
If P2 CO
2
level is out of range:
 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
2
levels.
 Turning the plastic #40 Torx screw clockwise,
will raise P2 CO
2
levels.
Fig. 46 Adjusting P2 CO
2
level
 Verify both P1 and P2 CO
2
readings are within the ranges
specied in Table 10 .
Program CO
2
values
P1 __________%
P2 __________%
Table 9
Note: P1 adjustment will change the P2
reading. Conrm the P1 value BEFORE
adjusting the P2 level.
Adjustments to the slotted screw (P1) will
also change P2 CO
2
levels.
Note: This screw adjustment is very sensitive
and should be made in small increments. It
may take several minutes for readings to
stabilize.
6720608158-38.1AL