Burner Control Unit Connection Diagram - Viessmann MatriX Service Instructions Manual

Burner control unit connection diagram

PE
Y1
Y1
PE
N
Y2
Y2
PE
N
Fan
M1
M
PE
N
Ignition
T1
PE
N
NE
B2
PE
COM
NE
B3
F4
PE
P
COM
NE
PE
COM
F6
P NE
COM
A1 Burner control unit MPA 51
A2 Display unit with reset function
B1 Flame monitoring via ionisation cur-
rent
B2 Safety chain jumper
F1 Line fuse
F2 High limit safety cut-out
B4
S3
T2
T1
N
PE
L1
A1
T8
T7
T6
B5
GND
Speed
PWM
+UH
ION
A2
Burner control unit connection diagram
H1
B4
H2
S3
K1
T2
T1
S2
N
L
F2
(+)
(-)
S3
H3
M1
B1
S1
F1
6.3 A (slow)
S4
F4 Minimum pressure, gas pressure
switch
F6 Air pressure switch
H1 Hours run meter, total
H2 Fault message
H3 Hours run meter
Modulation, lower rated output/
upper rated output
L1 N
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