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Circulating pump
Q1
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Q3
Q1
F1
L
N
M
B10
B9
MD
A6
MB
DB
654M2 1M M
32F 432FLN
2379A01
B3
B70/B4
H1
/
/
1
DB
M
Cascade flow
sensor
(B9)
Outside sensor
4$'
(B70)
Cascade return
sensor
H1
B70/B4
B3
B10
M
B9
MD
A6
MB
DB
Q3
Q1
F1
L
N
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Room
sensor
(option)
RVA 47
/
1
/
1
/
1
/
1
Box
earth
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Outside sensor QAC 31 B9/M terminal 4
Cascade flow sensor QAD 21 B10/M terminal 4 - already connected
Cascade return sensor QAD 21 B70/M terminal 4 - already connected
Room sensor (Option) QAA 70 A6/MD (in parallel)
Heating circulator Live
Neutral
Earth
Q1 on RVA 47
Neutral of terminal 1
Earth of terminal 1