Viessmann Vitoligno 300-P Service Instructions For Contractors page 21

Further details regarding the individual steps
System version 3
Boiler with DHW cylinder (optionally dual-mode for solar thermal system), solar
buffer cylinder (for solar central heating backup), solar thermal system with a
Vitosolic 200 and one or two heating circuits with mixer
wQ
wR wW
P
wT wE
wU
wZ
Pos. Description
1 Vitoligno 300-P
2 Vitotronic 200, type FO1
3 Outside temperature sensor ATS
4 Boiler water temperature sensor KTS
5 Return temperature raising facility
with
wP
wI
qE
qW
qT
qQ
qR
qP
Commissioning, inspection, maintenance
(cont.)
eQ
M
eE
8
7
3
6
2
5
4
1
Control unit connection with
number of heating circuits
1 2
eP rP
rQ
rW
eW rE
M
rR
rT
rZ
rU
rI
1 with 2 with
solar solar
! !
X2 X2
21