Checking The Condensate Drain And Cleaning The Siphon; Checking The Neutralising System (Accessories) - Viessmann Vitoladens 300-W Service Instructions For Contractors

Commissioning, inspection, maintenance
Further details regarding the individual steps
!
2. Please note
To prevent damage,
cover the control unit.
Danger
Cleaning work may lead to
eye injuries.
Wear protective goggles.
Fit rotary brush D (accessories) to a
rechargeable power tool and clean
the heat exchanger with the rotary
brush (at low speeds). Remove all
deposits, including from the sides of
the reversing sections.

Checking the condensate drain and cleaning the siphon

Checking the neutralising system (accessories)

Check the pH value of the condensate with a pH test strip. Replace the granulate if
the pH value < 6.5.
24
A
3. Remove dirt from the heat exchanger
gaps with a vacuum cleaner with
angled nozzle E (accessories).
4. Thoroughly flush the combustion
chamber with water. Ensure that the
end of the drain hose remains in the
vessel (see point 1).
1. Check at siphon A that the conden-
sate can freely drain off.
2. Remove the retaining clip and the
siphon.
3. Clean the siphon.
4. Fill siphon A with water and fit it to
the boiler. Position the retaining clip.
(cont.)