Viessmann GB-ND 055 E01 30/35 G25 Instrucciones De Montaje página 13

Checking the CO
A
r r
content
2
01. Connect a flue gas analyser to flue
gas port A on the boiler flue con-
nection.
02. Start the boiler and check for
leaks.
Danger
Escaping gas leads to a risk
of explosion.
Check gas equipment for
leaks.
03. Turn rotary selector "tr" fully
clockwise, until the display shows
"SERV".
Within 2 s return the rotary selector
to the r.h. control range. The dis-
play shows "A".
04. Set the upper heating output:
Turn rotary selector "tr" fully
clockwise, until the display shows
5 bars for the upper heating output.
05. Measure the CO
upper heating output.
The CO content must be between
2
the following values:
■ When operating with G 20/G 25:
7.5 to 10.5 %
■ When operating with G 31: 10.0
to 12.0 %
content for the
2
13
GB