Check And Adjust Ignition And Ionization Electrodes; Check Condensate Drain And Clean Siphon (P-Trap) - Viessmann Vitodens 100-W WB1B Series Installation And Service Instructions Manual

Vitodens 100-W, WB1B Installation & Service
Steps
(continued)
Maintenance
Start-up and Maintenance
Maintenance
Start-up and Maintenance

16. Check and adjust ignition and ionization electrodes

1. Check ignition and ionization electrode for wear,
contamination or warping.
2. Clean electrodes with a small brush or emery paper.
3. Check clearances. If clearances are not satisfactory
or the electrodes are damaged, replace electrode block
and gasket and align. Tighten fastening screws for the
electrodes to a torque of 3.5 Nm (31 lb.in.) using a
calibrated torque wrench.
4. Reinstall grounding wire.
Legend
A Ignition ionization electrode
B Ground

17. Check condensate drain and clean siphon (P-trap)

1. Check the siphon to ensure unimpeded drainage
of condensate.
2. Remove all hoses from siphon A.
3. Release locking tabs at opening B from underneath
and remove siphon A upwards.
4. Clean siphon A and reinstall.
5. Refit all hoses. Secure drain hose with cable ties.
6. Fill the siphon A with water by pouring 10 fl. oz.
(0.3L) of water into the combustion chamber.
IMPORTANT
If the condensate does not drain freely, condensate will
accumulate in bottom part of boiler resulting in a burner
shut-down (fault message F4). The combustion chamber
refractory will also become wet at the bottom. Do not
restart the boiler immediately with a wet combustion
chamber refractory. This will damage the refractory.
Either dry the refractory (ie. using a hairdryer) or replace it.
Start-up, Inspection and Maintenance
Installation Instructions Neutralization Unit
(if applicable)
69