Viessmann VITODENS 100-W WB1B Series Installation And Service Instructions Manual page 51

Steps
(continued)
Start-up and Maintenance
Start-up and Maintenance
Fig. 53
6. Relay tests (continued)
High-fire increase gas flow
Low-fire increase gas flow
Initial Start-up, Inspection and Maintenance
5. Check the flue gas CO
Should the actual value deviate by
more than 1% from the above
range, check the seals in the
balanced flue system.
6. Enter actual values into the
service report.
7. Check the CO
high- and low-fire again. If
the CO
the given range (refer page 50),
adjust the CO
IMPORTANT
Steady state conditions must be
established before measuring flue
gases.
8. Adjusting the CO
See CO
9. Adjust the high-fire (natural gas
or liquid propane gas). With the
adjusting screw B, using a hex
head wrench (4 mm), adjust the
high-fire CO
NG or 10.8% for LPG. Clockwise
rotation decreases gas flow and
counter-clockwise rotation
increases gas flow.
10. Adjust the low-fire (natural gas
or liquid propane gas). Remove
cover C from the gas valve.
With the adjusting screw under
the cover and using a T40 size
Torx head wrench, set the
low-fire CO
for NG or 10.5% for LPG.
Clockwise rotation increases gas
flow and counter-clockwise
rotation decreases gas flow.
11. Reinstall cover C.
12. Shut the boiler down, remove flue
gas analyzer and close flue gas
measurement port A.
13. Return selector dial "
"tr" to CO
14. To cancel the relay test, switch
the boiler OFF then back ON. If
not cancelled, the relay test is
automatically deactivated after 30
minutes.
content.
2
content for
2
content is still not within
2
content.
2
content.
2
table on page 50.
2
content to 9% for
2
content to 8.7%
2
" and
original positions.
2
51