A3
Optolink
A4
Burner control unit
A5
Operating interface
A6
Coding card
A7
Connection adaptor
A8
LON communication module
A9
Internal extension H1
S1
ON/OFF switch
S2
Reset button
!
Outside temperature sensor
?
Flow temperature sensor low
loss header
%
Cylinder temperature sensor
sÖ
Internal circulation pump
(heating circuit pump or boiler
circuit pump)
sK
Circulation pump or central fault
message
dD
Flow switch
dG
Gas solenoid valve
fÖ
Power supply
gD
External LPG safety valve
lH
Mains power supply - acces-
sories and Vitotrol 100
a-Ö
Fan motor
aYA
Gas governor
aVG
KM BUS
Connection and wiring diagrams
–
external connectio . . .
(cont.)
110
Designs
56
92
550
GB
Summary of Contents for VITODENS 300 WB3A
Page 10: ...Opening the control unit housing 10 5862 570 GB...
Page 14: ...Closing control unit housing and inserting user interface 14 5862 570 GB...
Page 129: ...Parts lists cont 113 Parts lists 5692 550 GB...
Page 130: ...Parts lists cont 114 Parts lists 5692 550 GB...
Page 131: ...Parts lists cont 115 Parts lists 5692 550 GB...
Page 132: ...Parts lists cont 116 Parts lists 5692 550 GB...
Page 133: ...Parts lists cont 117 Parts lists 5692 550 GB...
Page 145: ...129 5692 550 GB...
Page 146: ...130 5692 550 GB...
Page 147: ...131 5692 550 GB...