Viessmann WB1A Series Installation And Service Instructions Manual page 56

Initial Start-up, Inspection and Maintenance
Steps
(continued)
S
Maintenance
ervice
A
B
S
Maintenance
ervice
56
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15. Check condensate drain and clean siphon (P-trap)
1. Check the siphon to ensure
unimpeded drainage of condensate.
2. Place appropriate container
underneath siphon
3. Remove sealing cap
siphon content into the container.
4. Replace the sealing cap
5. Fill the siphon with water by
pouring 10 fl.oz. / 0.3L of water into
the combustion chamber.
16. 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.
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
and drain
combustion chamber refractory will
also become wet at the bottom
portion. Do not restart the boiler
immediately with a wet combustion
w/gasket.
chamber refractory. This will damage
the refractory. Either dry the refractory
or replace it.
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
(if applicable)
Accessory
Installation Instructions
Neutralization Unit