Address Setup - Carrier MMU-AP0072H2UL Installation Manual

 Wire connection
REQUIREMENT
• Connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
• Pass the control wires and remote control wires through the bushing of the indoor unit.
• The low-voltage circuit is provided for the control and remote control.
(Do not connect the high-voltage circuit)
• Remove the cover of the electrical control box by taking off the mounting screws (2 positions) and pushing the
hooking section. (The cover of the electrical control box remains hanged to the hinge.)
• Remove the 2 screws from the wire cover.
• Attach the conduit pipe to the conduit plate with a lock nut.
• Connect the power supply wires and control wiring and remote control wire to the terminal block of the electrical
control box. Secure the ground wire with the ground screw.
• Tighten the screws of the terminal block, and fix the wires with cord clamp attached to the electrical control box.
(Do not apply tension to the connecting section of the terminal block.)
• Mount the wire cover without catching the wires. (The wire cover should be mounted before the ceiling panel.)
• Mount the cover of the electrical control box without catching the wires.
(Mount the cover after wiring on the ceiling panel.)
Conduit
Piping
Bushing of control
connection hole
Knockout
and remote control
wires
Lock nut
Conduit pipe
Conduit plate
Side D
(Space: 0.33" (8.5 mm))
Insert the wire to Side C.
21-EN
Hinge
Screws at 2 positions
Louver connector
Power supply
Wire cover (CN510: White)
terminal block
Ground screw for
Ground screw
L L
1 2
shielded wire (control
wire)
Electrical
control box
cover
Side C
Cord clamp
(Space: 0.16" (4 mm))
– 11 –
 Power supply wires and
ground wire
1. Strip the wire ends.
Power supply wire: 0.4" (10 mm)
Ground wire: 0.8" (20 mm)
2. Match the wire colors with the terminal numbers on
the indoor units' and circuit breakers' terminal blocks
and firmly screw the wires to the corresponding
terminals.
3. Secure the ground wire with the ground screw.
4. Fix the wires with a cord clamp.
0.8" (20)
Ground wire
CAUTION
Firmly tighten the screws of the terminal block.
Keep the wire length as shown in figure below when it
is connected to the terminal block.
Power supply wires and control
wire
Remote
control
terminal block
 Control wires
Because a "Wiring box" has little space, a cover of
control wires (2-core shielded wire) should be removed
up to 5.9" (150 mm).
Unit: in (mm)
1.2" (30)
L L
1 2
0.4" (10)
Cover
 Address setup
Set up the addresses as per the Installation Manual
supplied with the outdoor unit.
 Wiring on the ceiling panel
According to the Installation Manual of the ceiling
panel, connect the connector (20P: White) of the
ceiling panel to the connector (CN510: White) on P.C.
board of the electrical control box.
Ground screw
for shielded wire
(control wire)
Wiring box
Control wires
(2-core shielded wire)
5.5" (140)
Shield wire
0.4" (9)
5.9" (150)
22-EN