Midea Aqua Tempo Super MC-SP25-RN1L, Technical & Service Manual, Page: 107 / 153

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-201606
105
○
1 .
Wiring of “ON/OFF” weak electric port
C
orresponding parallel connect the “ON/OFF”(dry contact input signal) port of the main unit’s electric control
box,
then, connect the “ON/OFF” signal (provide by user) to the “ON/OFF” port of main unit as follows.
0# electric
control box
“ON/OFF” port
ON/OFF signal
Power (DC 12V) Main control board is provided
Red
Blue
○
2 .Remote mode selection:
Wiring of “HEAT/COOL” weak electric port
C
orresponding parallel connect the “HEAT/COOL” (dry contact input signal) port of the main unit’s electric
control box, then, conne
ct the “ON/OFF” signal (provide by user) to the “HEAT/COOL” port of main unit as
follows.
0# electric
control box
“HEAT/COOL” por
t
ON/OFF signal
Power (DC 12V) Main control board is provided
Brown
Black
○
3 .
Wiring of “ALARM” port
Connect the device provided by user to the “ALARM” (dry contact output signal) ports of the module units as
follows.
electric control box
“ALARM” port
D
e
vi
ce
p
ro
vi
d
e
d
b
y
u
se
r
Red
Red
If the unit is operating normally, the ALARM port is closed, otherwise, the ALARM port is not closed.