Cleaning The Sight Glass In The Boiler Door - Viessmann Vitoplex 200 SX2A Service Instructions For Contractors

Commissioning, inspection, maintenance

Cleaning the sight glass in the boiler door

Sight glass with ventilation facility
Fig. 6
Check the gaskets and hose connection for tightness.
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
Checking the flue pipe for tightness
Checking the Vitoair draught stabiliser (if installed)
Release the latch on the control disc.
Adjusting the burner
Burner service instructions or separate docu-
mentation by the burner manufacturer
Adjust the maximum oil or gas throughput of the
burner to the rated boiler heating output.
14
3. Check the mixer for leaks. Replace the O-rings if
the mixer is leaking.
4. Snap the motorised lever into place.
The control disc must swing freely during burner oper-
ation.