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

Initial Start-up, Inspection and Maintenance
Steps
(continued)
S
Maintenance
ervice
A
B
Fig. 59
S
Maintenance
ervice
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
3. Release locking tabs at opening
from underneath and remove siphon
upwards.
4. Clean siphon and reinstall.
5. Refit all hoses. Secure drain hose
with cable ties.
6. Fill the siphon 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