Midea M20 - Wiring Diagram and Settings

26
8.4 WIRING DIAGRAM
1.BK
2.BK
3.W
4.W
5.BL
6.BL 7.BK 8.Y 9.R
1.BK
2.BL
1.G
2.P
3.BL
4.BK
5.BK
6.Y 7.R 8.BR 9.W
10.W
ignition
wires
DIP Switch
ground
water flow sensor
input NTC
output NT C
wifi module
water valve
valve C
valve B
valve A
switch valve
proportional valve
to display
AC power
to wire controller
36VDC fan
ground
anti-freeing heat
Temperature Settings
Only change DIP switch,
Don’t touch the other switches
BK------Black
BL------Blue
BR------Brown
R------Red
G------Green
Y------Yellow
W------White
PL------Purple
Wiring Diagram
1.BR
2.BL
DIP
ON
4
32
1
Networking
microswitch
Flame
feedback
needle
thermostat
1
5
1
10
1
9
55ć
ON
DIP
123
4
60ć
70ć
42ć
45ć
48ć
M26/M20 M26-50/M20-50
ON
DIP
123
4
ON
DIP
123
4
ON
DIP
123
4
ON
DIP
123
4
ON
DIP
123
4
55ć
ON
DIP
123
4
60ć
70ć
42ć
45ć
48ć
M26/M20 M26-50/M20-50
ON
DIP
123
4
ON
DIP
123
4
ON
DIP
123
4
ON
DIP
123
4
ON
DIP
123
4
The DIP Temperature setting