Pcb 3: Sensors And Km Bus - Viessmann Vitocal 300-G BW Installation And Service Instructions Manual

PCB 3: Sensors and KM BUS

X2
27
26
25
e-Q
24
23
F4
22
21
20
19
18
17
16
F0
15
F6
14
F7
13
12
11
F12
10
F13
9
F14
8
7
F16
6
5
F20
4
3
2
1
e¢Q KM BUS
e¢W Heating water buffer cylinder
e¢E Outside temperature sensor
e¢R DHW cylinder, top
e¢T DHW cylinder, bottom
e-Q
X1
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Connection and wiring diagrams
e-Q
e-W
e-E
e-R
e-T
M2
e-Z
e-U
e-I
e-O
eYP
e¢Z Flow, heating circuit with
mixer M2
e¢U System flow (downstream of the
heating water buffer cylinder or
external heat source)
177