Checking The Thermal Insulation; Checking The Water Quality - Viessmann Vitoplex 300 Service Instructions For Contractors

Commissioning, inspection, maintenance
Checking electrical plug-in connections and cable grommets for firm seat-
ing

Checking the thermal insulation

Checking the water quality

Observe the instructions in chapter "Water quality
requirements".
Enter the amount of top-up water and the total hard-
ness of the feed and boiler water into the table in the
appendix on page 25.
Cleaning the sight glass in the boiler door
Fig. 6
Check the gaskets and hose connection for leaks.
Checking the mixer for ease of operation and tightness
1. Remove the motorised lever from the mixer han-
dle.
2. Check the mixer for ease of operation.
Checking the function of the return temperature raising facility (if
installed)
Checking the installation room ventilation
14
The total hardness of the feed and top-up water must
not exceed 0.11 °dH (total value of alkaline earths
0.02 mol/m 3 ). The pH value should be between 9
≤
and 10.5.
3. Check the mixer for leaks. Replace the O-rings if
the mixer leaks.
4. Snap the motorised lever into place.