8.
Open the gas shut-off valve and
start the boiler.
Danger
Gas escaping from the test
nipple leads to a risk of
explosion.
Check test nipple
A
for
soundness.
Checking the CO
2
settings
Vitodens100 is factory-set for natural gas.
During commissioning or maintenance, the CO
2
setting can be measured at the
boiler flue adaptor testpoint. Checking CO
2
levels is not a requirement.
Subject to the Wobbe index, the CO
2
content fluctuates between 7.4% and
10.5%
If the actual CO
2
value deviates from the stated ranges by more than 1%, check
the balanced flue system for leaks.
1.
Connect a flue gas analyser at flue
gas connector
A
on the flue outlet.
2.
Open the gas shut-off valve, com-
mission the boiler and create a heat
demand.
Commissioning and testing
(cont.)
53
Installation
58
62
670
GB
Installation
