Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 161

Return temperature raising facility assembly
Pos. Part
0002 Ball valve 1 1/2"
0003 Fitting 1 1/2"
0004 3-way mixing valve
0005 Actuator
0006 Circulation pump
0007 Gasket A 30 x 44 x 2
0008 Gasket set 2" (2 pce)
0009 Corrugated pipe
(cont.)
Parts lists
161