Position Of Electrical Wiring Connection - York TIWM006B21S Installation And Maintenance Manual

8.3

Position of Electrical Wiring Connection

● Ensure that the wire terminals are tight to recommended torque specs. Failure to do this can result
in electrical shock or fire at the terminal connection.
● Do not apply excess force when tightening cables. This can result in heat generation and fire.
● Make sure that the terminals do not come into contact with the electrical box. If the terminals are
too close to the surface, it can result in the activation of the circuit protection, heat generation and
fire at the terminal connection, and an electrical shock.
(1) The electrical wiring connections at the terminal block for the indoor unit are shown in the figures
below. Check the outdoor unit configuration before the wiring work begins.
TIWM006B21S to TIWM012B21S
TB2
A B 1
(Field-Wiring Connection Side)
NOTE:
When standard grade electrical wire is used for field-wiring connections, an M4 terminal crimping tool
should be used. When a single wire is used, reshape it as shown below. The screws at the terminal
block should be tightened using the torque specs in the table at right.
Connect it with
Crimping Terminal.
Stranded Wire
(2) Connect the cable for the optional controller or the optional extension cable to the terminals inside the
electrical box through the connection hole on the cabinet.
(3) Connect the power supply and the ground wiring to the terminals in the electrical box.
(4) Connect the cables between the indoor unit and the outdoor unit to the terminals in the electrical box.
(5) Connect cables to correspond with terminals of the same number or color band.
(6) Install the communication cable between indoor units and the outdoor unit for the same system.
● Do not connect the main power supply wiring to the communication line
(Terminals A, B, 1, and 2 of TB2). If connected, the printed circuit board
(PCB) will be destroyed.
● Pay attention to following when wires are connected at the terminal block:
(A) Attach a piece of insulation tape or a sleeve at each terminal.
(B) Maintain the recommended distance between the electrical box and
the terminals to prevent a short circuit.
(C) Maintain the recommended distance between terminals.
P5417052
TB1
2
L1 L2 N
(Mp)
Connect it Direct
As Shown Below.
Single Wire
NOTICE
TIWM015B21S to TIWM030B21S
TB1
L1 L2 N
(Mp)
(Field-Wiring Connection Side)
Tightening Torque for Terminals
Size
Power Supply M4
Communication M3.5
(B)
TB2
A B 1 2
Tightening Torque
0.7 - 1.0 ft·lbs
(1.0 - 1.3 N-m)
0.9 ft·lbs
(1.2 N·m)
(C)
Screw
(A)
27