Viessmann Vitocrossal 200 Installation Instructions Manual page 11

Connection on the heating water side
A
Female connection for control
equipment R ½" (e.g. minimum
pressure switch)
E Drain and diaphragm expansion
vessel connection R 1"
KOA Condensate drain R ½"
1. Flush the heating system thor-
oughly.
(cont.)
KR Boiler return
87 to 142 kW: PN 6 DN 50
186 to 311 kW: PN 6 DN 65
KV Boiler flow
87 to 142 kW: PN 6 DN 50
186 to 311 kW: PN 6 DN 65
SA Safety connection (safety valve
and air vent valve) G 1¼"
2. Connect the heating circuits.
11