Further Details Regarding The Individual Steps; Diaphragm Expansion Vessel - Viessmann Vitogas 100 Service Instructions Manual

Further details regarding the individual steps

Preparing for commissioning and checking the diaphragm
expansion vessel
¨ Safety instructions
Only for commissioning with Vitotronic 300, type GW2
Check that the high limit safety cut-out of the control unit is not set higher
than 110 ºC. Set to a maximum of 110 ºC if required.
Safety equipment block 72 to 96 kW
Safety equipment block 108 to 144 kW
Initial start-up, inspection and maintenance
1. Check that the boiler room
ventilation aperture is open.
2. Check the charge pressure of the

diaphragm expansion vessel.

3. Open any check valves that may
be fitted.
4. Fill the heating system, vent it and
check the system pressure on
pressure gauge A.
(Min. system pressure 0.8 bar,
permiss. operating pressure 3 bar).
5. Return the check valves to their
operating position.
5