Toshiba Carrier MMY-MAP0726HT6P-UL Installation Manual page 18

■ Connection of power supply wires and control wires
Power supply wires
Wire clamp
Power supply
terminal block
Ground screw
Control wire
terminal block
Control wires
Wire clamp
Conduit
(MAP072, MAP096, MAP120)
NOTE
Separate power supply wires and control wires.
◆ Power supply wire connection
1. Connect the power supply conduit to the field wiring panel.
2. Route the power supply wiring through the raceway and connect to the power supply terminal block and ground
screw.
3. Use ring terminals on field power wires if required by NEC and local codes.
Knockout for control wires
NOTE
Bundle the control wires in the cutout so that they do not get caught in the electrical control box cover.
33-EN
Power supply wires
Wire clamp
Power supply
terminal block
Ground screw
Control wire
terminal block
Wire clamp
Control wires
(MAP144, MAP168)
A Knockout for power supply wires
(When using wire size AWG 14, AWG 12, or AWG 10.)
B Knockout for power supply wires
(When using wire size AWG 8, AWG 6, or AWG 4.)
Piping/wiring panel
– 17 –
Screw size and tightening torque
Power supply terminal
Ground screw
◆ Precautions when knocking out knockout holes
• After knocking out the hole to the other side, remove the burr, then we recommend you to paint around the edge
with the repair paint to prevent the rusting.
◆ Control wire connection
1. If conduit is required for the control wiring, connect it to the field wiring panel.
2. If conduit is not required, route the control wiring directly through the field wiring panel.
3. Connect all control wiring to the system interconnecting terminal block and connect the shield to the ground
screw.
Conduit
Screw size and tightening torque
control wire terminal
Screw size
M8 4.1 to 4.8(5.5 to 6.6)
M8 4.1 to 4.8(5.5 to 6.6)
U1 U2 S U3 U4 U5 U6 S
TO TO TO
INDOOR SHIELD CENTRAL OUTDOOR SHIELD
UNIT CONTROLLER UNIT
U , U : Control wiring between outdoor units
5 6
U , U : Central control device
3 4
S: Shield wire earth
U , U : Control wiring between Indoor/Outdoor units
1 2
Screw size
M3.5 0.6 to 0.7(0.80 to 0.96)
Tightening torque
ft•lbs(N•m)
Tightening torque
ft•lbs(N•m)
34-EN