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17.b
Run the boiler module at full load (forced mode
'high') by pressing the m- and [+]-key simulta-
neously for 2 seconds. The letter h will now
appear on the display.
17.c
When full load is reached, measure dP gas at
measuring point P on the underside of the gas
valve multiblock and at the measuring point PL
on the venturi and compare to the value in table
11. Adjust if necessary using the ß adjustment
screw on the gas valve multiblock.
17.d
Check CO
-percentage (O
2
table 11. If the values exceed the given toler-
ances, adjust according to fig. 22.
Check the flame through the inspection glass,
the flame must not blow off.
17.e
Run the boiler module at part load (forced mode
'low') by pressing the m and [-] keys simulta-
neously for 2 seconds. The letter l will now
appear on the display.
17.f
When part load is reached, measure dP gas at
measuring point P on the underside of the gas
valve multiblock and at measuring point PL on
the venturi and compare to the value in table
11. Adjust if necessary using the Þ adjustment
screw on the gas valve multiblock.
17.g
Check CO
-percentage (O
2
table 11. If the values exceed the given toler-
ances, adjust according to fig. 22.
Check the flame through the inspection glass,
the flame must not blow off.
Repeat the check starting from point 17 b. until the
readings match the values in the tables.
Contact our Service Department if deviations cannot be
corrected.
Þ Burner pressure minimum load setting
ß Burner pressure maximum load setting
fig. 22 Gas valve multiblock adjustment points
00.31H.79.00006
-percentage) against
2
-percentage) against
2
31
fig. 23 Flue gas measuring point
00.61H.79.00007
Guide value CO
2
Adjust at
Set to
9.0 ± 0.15%
Guide value O
2
Adjust at
Set to
4.8 ± 0.25%
1020 ± 100
dP 6 sections
900 ± 100
dP 7 sections
1350 ± 100
dP 8 sections
1650 ± 100
dP 9 sections
table 11 Setting data CO
17. h
Remove measuring equipment and seal test
points.
18.
Check gas leakage control and minimum gas
pressure switch (if installed):
Parameter J must be set to a value greater than or
equal to 8, depending on the connected options (see
section 13.2.13).
Then set the gas leakage control pressure switch to
a switch pressure equal to 50% of the inlet pressure.
Check that the measured inlet pressure is not the (high-
er) closing pressure.
19.
Return the boiler module to 'user level' by press-
ing the reset key.
20.
Heat the system to approximately 80ºC and
switch off the boiler module.
21.
Bleed the system and check the water pressure.
22.
The boiler module is now ready for operation.
Natural gas (G20)
Full load
Part load
(100%)
(± 20%)
9.0%
9.0%
± 0.5%
± 0.5%
9.0 ± 0.15%
4.8%
4.8%
± 0.5%
± 0.5%
4.8 ± 0.25%
119 ± 10
103 ± 10
100 ± 10
145 ± 10
and O
2
2
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