Checking The Water Quality; Checking The Mixer For Obstructions And Leaks - Viessmann Vitocrossal 300 Service Instructions For Contractors

Further details regarding the individual steps

Checking the water quality

Enter the amount of top-up water and the
total hardness of the feed and boiler
water into the following table.
For water quality requirements, see
page 139.
Meter read- Fill and top-
ing up water
m 3 m 3
The total hardness of the feed and top-up water must not exceed the guidelines
specified by the VDI 2035 (see page 139).
The pH value should be between 8.2 and 10.0.

Checking the mixer for obstructions and leaks

1. Remove the motorised lever from the
mixer handle.
2. Check the mixer for ease of opera-
tion.
Commissioning, inspection, maintenance
Total water
volume Feedwater Boiler water
°mmol/l
m 3
3. Check the mixer for leaks. Replace
4. Snap the motorised lever into place.
(cont.)
Total hardness
°mmol/l
the O-rings if the mixer leaks.
pH value Date
27