Check Condensate Drain And Clean Siphon (P-Trap); Check Neutralization Unit (If Applicable) - Viessmann VITODENS 100-W WB1B Series Installation And Service Instructions Manual

Initial Start-up, Inspection and Maintenance
Steps
(continued)
Maintenance
Start-up and Maintenance
Fig. 61
Maintenance
58

16. 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.

17. Check neutralization unit (if applicable)

1. Check the pH value of the
condensate with a pH measuring
strip. If the pH value is less
than 6.5, replace granulate.
2. If contaminated:
Rinse neutralization unit with tap
water.
3. Add granulate as marked on the
cartridge.
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.
Installation Instructions
Neutralization Unit
(if applicable)
IMPORTANT
pH measuring strip is field supplied.
IMPORTANT
The granulate is consumed as it
neutralizes the condensate. The red
marking indicates the min. filling level.
Installation Instructions
Neutralization Unit
Accessory