6 720 610 597 GB (03.02)
36
Converting the appliance to different gas types
B
Press
or
to select Min.
B
Measure the CO
2
level.
B
Remove the seal from the gas valve adjusting screw
(64) and adjust the CO
2
level to the figure given in
Table 15 for min. rated heat output. Refer to fig. 42.
Fig. 42
B
Recheck the levels at min. and max. rated heat output
and re-adjust if necessary.
B
Press
or
until the display shows
normal.
B
Press the
button. The text display shows
Store settings.
B
Press
to select yes.
B
Press the
button.
B
Remove testing probe from the flue gas testing point
(234) and refit sealing plug.
B
Re-seal gas valve adjusting screw and gas flow
restrictor.
B
Replace the outer case by locating it on the top lugs
and pushing backwards until the bottom clips are
fully engaged. Check that the case is properly
aligned with facia. Refer to fig. 13.
B
Secure by replacing the screw at the bottom left.
Refer to fig. 13.
8.2
Testing combustion air/flue gas at
set heat output
8.2.1
Testing the O
2
or CO
2
level in the combus-
tion air
B
Press and hold the
button until the display
shows – –.
“Chimney sweep” mode is now active.
The
button will light up and the display shows the
CH flow temperature.
B
Remove sealing plug from combustion air testing
point (234.1, Fig. 43).
B
Insert testing probe about 80 mm into the testing
point and seal testing point.
Fig. 43
B
Measure O
2
and CO
2
levels.
B
Refit sealing plug.
B
Press and hold
button until the display shows – –.
The
button will stop flashing and the display
shows the CH flow temperature.
ZWBR 7-30
Gas Type
CO
2
reading
at max.
rated heat
output
CO
2
reading
at min.
rated heat
output
Natural gas type
G20
9.2 %
8.8 %
LPG G31
(propane)
10.8 %
10.5 %
Table 15
ZWBR 11-35
Gas Type
CO
2
reading at max. and
min. rated heat output
Natural gas type
G20
9.2 %
LPG G31
(propane)
11.0 %
Table 16
64
3928-74.1R
i
By testing the O
2
or CO
2
level in the com-
bustion air the gas tightness of a type C
13
or C
33
flue system can be checked. The
O
2
level must not be less than 20,6 %.
The CO
2
level must not exceed 0,2 %.
i
In “chimney sweep” mode, the appliance
switches to max. rated heat output or the
set heating output. You then have 15 min-
utes in which to measure the levels. After
that, the appliance switches back from
“chimney sweep” mode to normal mode.
6 7 2 0 6 1 0 3 3 2 - 6 5 . 2 R
2 3 4
2 3 4 . 1
Содержание GREENSTAR HE combi Series
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