Function Of Terminals - mundoclima MUENR-H9T Manual De Instalación Y Usuario

8.5.7 Requirements for power cord connection
Correct
L1 L2 L3
L1 L2 L3
Wrong
L1 L2 L3
L1 L2 L3 N
Fig. 8-11 Requirements for power cord connection
NOTE
Please use the round-type terminal with correct specifications to
connect the power cord.
N
N
N

8.5.8 Function of terminals

As shown in the figure below, the unit communication signal wire
is connected to the terminal block XT2 at 5(X), 6(Y) and 7(E), and
the wired controller signal wire is connected at 8(X), 9(Y) and
10(E) inside the electric control box. For specific wiring, see
chapter 8.5.13.
XT2
Unit communication
Fig. 8-12 Wiring of unit communication and
the wired controller communication
When the water pump and auxiliary heater are added externally,
a 3-phase contactor must be used for control. The model of
contactor is subject to the power of water pump and heater
power. The contactor coil is controlled by the main control board.
See the figure below for coil wiring. For specific wiring, see
chapter 8.5.13 .
The user can connect an ac light to monitor the state of
compressor.When the compressor is operating,the light will be
powered on.
The wiring of water pump and pipeline auxiliary heater and ac light
of the state of compressor is as follows.
XT1
HEAT1
Coil of
3 phase
AC contactor
L1/L2/L3
220-240V~
50Hz
N
Fig. 8-13 Wiring of water pump and pipeline auxiliary heater
and ac light of the state of compressor
8.5.9 Wiring of "ON/OFF" weak electric port
The remote function of "ON/OFF" must be set by DIP switch. The
remote function of "ON/OFF" is effective when S5-3 is chosen ON,
at the same time, the wired controller is out of control.
Corresponding parallel connect the "ON/OFF" 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.
The remote function of "ON/OFF" must be DIP switch set.
Wiring method: Shorting the terminal block XT2 at 15 and 24
inside the electric control box to enable the remote function of
"ON/OFF".
79
The wired controller
communication
COM COMP-STATE PUMP N
Coil of
3 phase
AC contactor
Max voltage:240VAC
Max current:5A