Checking The Co Content - Viessmann MatriX Service Instructions Manual

Initial start−up, inspection and maintenance
Further details regarding the individual steps
Checking the CO
A
B
C
D
E
F
1. Open the gas shut−off valve.
2. Start the burner.
14
content
2
(cont.)
3. Simultaneously press "S" (E)
and " " (D).
Note
The display C shows
H Status: "d" (= control stop) and
H Service: Modulation level in %
("00." = 100 % = higher output,
"00" = 0 % = lower output)
Higher output
4. Press "+" (F), until the service
display has incremented to "00."
(= 100 %).
5. Check the CO
2
flue pipe.
Burner output
in kW
187
248
314
6. If the CO content must be altered,
2
H remove the cover B and
H turn the adjusting screw A in
small steps (Allen key, 3 mm)
until the CO
2
the stipulated range:
turn clockwise
³ CO
content falls,
2
turn anti−clockwise
³ CO
content rises.
2
7. Record the test value in the
service report (on page 49).
content at the
Permissible CO
2
content in %
9.0 ( 0.2/+0.3)
8.8 ( 0.2/+0.3)
8.5 ( 0.2/+0.3)
content reaches