Viessmann VITODENS 200 Start-Up And Service Instructions page 20

Initial Start-up and Service
Steps
(continued)
S
ervice
8 +4
-0
S
ervice
20
17. Check and adjust ignition and ionization electrode
1. Remove burner cover panel (if still
installed) as per the removal and
reinstallation instructions on page 7
in this manual, and reinstall panel
upon completion of service work.
2. Check electrodes for wear and
contamination.
3. Clean electrodes with small brush or
emery paper.
4. Check clearances. If clearances are
not satisfactory or the electrodes are
damaged, replace electrodes and
gasket A and align.
Tighten fastening screws for the
electrodes to a torque of 1.5 lb.ft. /
2 Nm.
+3
5
-0
+0.5
3
-0
18. Check condensate drain
Ensure condensate drains freely (e.g. at
siphon trap
If necessary, clean siphon trap.
Discharge tubing
Flexible discharge tubing
Siphon trap
+0
7
-1
).
CAUTION
Do not damage wire mesh when
cleaning.
IMPORTANT
If the condensate does not drain freely,
condensate will accumulate in bottom
part of boiler resulting in a burner
shut-down (fault message).
Installation Instructions
Neutralization Unit
(if applicable)