Connection Diagram - Viessmann MPA51 Operating And Service Instructions

Connection diagram

Connection diagram
M
L
K
C
H
G
F
A Burner control unit MPA5113
B Vitotronic control unit
C Fan motor with PWM control and
feedback
D Flame monitoring by means of ioni-
sation current
E Display unit with reset function
F Air pressure switch
G Gas pressure switch
H Ignition unit
K Solenoid valve stage 2 (BV 2)
26
A
E
L Solenoid valve stage 1 (BV 1)
M Servomotor for rotary damper
B2 Safety chain jumper
F1 MCB/fuse
F2 MCB/fuse
F6 High limit safety cut-out
F7 Temperature controller
H1 Hours run meter, modulation
H2 Fault message
H3 Hours run meter, modulation
S1 ON/OFF switch
B
C
D