background image

1

3

N L1

1

3

N L1

N

L1

L2

 WARNING

Use the indoor/outdoor unit connecting wire that meets the Standards to connect
the indoor and outdoor units and fix the wire to the terminal block securely so that
no external force is conveyed to the connecting section of the terminal block.
Incomplete connection or fixing of the wire could result in a fire.

Attach the electrical cover securely. If it is attached incorrectly, it could result in a
fire or an electric shock due to dust, water, etc.

4-3 POWER SUPPLY AND INDOOR/OUTDOOR UNIT

CONNECTING WIRE CONNECTION

Power should be taken from an exclusive branched circuit.

Wiring work should be based on applicable technical standards.

Wiring connections should be made following the diagram.
Screws should be tightened so they won’t loosen.

ELECTRICAL SPECIFICATIONS

MODEL

MS24WN

MSH24WN

INDOOR UNIT

Power supply (V, PHASE, Hz)

115, 1, 60

Min. Circuit Ampacity

1.1

Fan motor (F.L.A)

0.82

OUTDOOR UNIT

Power supply (V, PHASE, Hz)

208/230, 1, 60

Max. Fuse size (time delay) (A)

25

Min. Circuit Ampacity

22

Fan motor (F.L.A)

0.86

Compressor

(R.L.A)

16

(L.R.A)

58

Control voltage

Indoor unit-Remote controller : (Wireless)

Indoor unit-Outdoor unit : DC12V (Polar)

Note:

If the indoor unit is powered from outdoor unit, a separate circuit breaker is not required
but a disconnect switch may be required by local code. If the indoor unit is powered
from an independent power supply, a dedicated circuit breaker or maximum fuse size of
15A must be installed for the indoor unit, and a disconnect switch may also be required.
(Refer to the figures on the right.)

1

Remove the front panel. (Refer to 7-1)

2

Remove the corner box. (Refer to 7-2)

3

Remove the electrical cover.

CONNECTING WIRES

For 115 V AC, wired to be AWG14 double insulated, 300 V insulation, or as required
by national or applicable local code.
For 12 V DC, control wire must be from AWG22 to AWG14 stranded and double
insulated, 300 V insulation.
Equal to Belden 9407.

Use copper conductors only.

 CAUTION

Be careful not to make mis-wiring.

Firmly tighten the terminal screws to prevent them from loosening.

After tightening, pull the wires lightly to confirm that they do not move.

If the connecting wire is incorrectly connected to the terminal block, the unit does
not operate normally.

If a ground is incorrect, it may cause an electric shock.

4-4 AUTO RESTART FUNCTION

When the units of these models are shipped from the factory, auto restart function is
set to ON. If you want to know how to release this function, consult the service center.

When the indoor unit  is controlled with the remote controller, the operation mode, the
set temperature, and the fan speed are memorized by the indoor electronic control
P.C. board. The auto restart function sets to work the moment the power has
restored after power failure, then, the unit will restart automatically. If the unit is
operated in
“I FEEL CONTROL” mode before power failure, the operation is not memorized. In
“I FEEL CONTROL” mode, the operation is decided by the initial room temperature
at (re)start.

Operation

1

If the power of the indoor unit (115V AC) has been cut, the operation settings remain.

Remark:

When indoor and outdoor unit are powered in separate circuit even if the power of the
outdoor unit (208/230V AC) is cut, auto restart function doesn’t work.

2

When three minutes have passed after power was restored, the unit will restart
automatically according to the memory.

Notes:

The operation settings are memorized when 10 seconds have passed after the
remote controller was operated.

If the main power is turned off or a power failure occurs while AUTO START/STOP
timer is active, the timer setting is cancelled. As these models are equipped with the
auto restart function, the air conditioner should start operating at the same time that a
power has restored.

If the unit has been off with the remote controller before power failure, the auto
restart function does not work as the power button of the remote controller is off.

To prevent breaker off due to the rush of starting current, systematize other home
appliances not to turn on at the same time.

Electrical cover

R.L.holder

Connector

Conduit

Lock
nut

Conduit plate

Fixing screw

Pull
down

Indoor terminal block

Electrical cover

Fixing screw

Securely push the wire into
the terminal block until no
part of its core is appeared.

Indoor/outdoor unit connecting wire 

A

5/8inch

<Connection details>

Terminal
block

Loosen terminal screw.

Lead wire

Connect wires to the matching numbers
of terminals.

Remark:

Indoor unit can also be
powered from an
independent power supply
[Max. Fuse size (time
delay) : 15 A].
In this case these indoor/
outdoor connecting wires
for indoor power supply
are not necessary.

∗∗

A disconnect switch may
be required.
Check the local code.

∗∗∗

Use a ring tongue terminal
in order to connect a
ground wire to terminal.

Note:

Please note that Indoor/outdoor connecting wires should not be on the separator.

Separator

Grounding
terminal

∗∗∗

INDOOR UNIT

Terminal block

Terminal block 2

OUTDOOR UNIT

Terminal
block 1

Ground

Grounding
terminal

∗∗∗

DC12 V 

(Polar)

Disconnect switch 

∗∗

115V AC 

1phase, 60Hz

Power supply
208/230V AC, 1phase 3wires, 60Hz

Electrical box

Conduit cover

4

Remove the R.L.holder.

5

Remove the lead wire from the hook of
the conduit cover.

6

Remove the fixing screw for the conduit
cover.

7

Remove the conduit cover.

8

Fix the conduit connector to conduit plate
with lock nut.
After that, set secure the conduit plate and
electrical box tightly with the fixing screw.

Содержание Mr.SLIM MS24WN

Страница 1: ...telephone ground wire Defective grounding could cause an electric shock Do not install the unit in a place where an inflammable gas leaks If gas leak and accumulate in the area surrounding the unit it could cause an explosion Install a ground leakage breaker depending on the installation place Where it is humid If a ground leakage breaker is not installed it could cause an electric shock Perform t...

Страница 2: ...e requirement 3 INSTALLATION DIAGRAM ACCESSORIES FLARED CONNECTIONS This unit has flared connections on both indoor and outdoor sides Remove the valve cover of the outdoor unit then connect the pipe Refrigerant pipes are used to connect the indoor and outdoor units Limits Pipe length 50 ft max Height difference 25 ft max No of bends 10 max Refrigerant adjustment If pipe length exceeds 25 ft additi...

Страница 3: ...ike that flowing between buildings cannot be expected keep the height or width of obstacles within the following range Otherwise there is the risk of short cycle occurring If the front or rear side satisfies the requirements there is no special restriction on the remaining side Obstruction width 1 5 times width of outdoor unit or smaller Obstruction height Unit height or lower 6 Obstacles on 4 sur...

Страница 4: ...e memorized by the indoor electronic control P C board The auto restart function sets to work the moment the power has restored after power failure then the unit will restart automatically If the unit is operated in I FEEL CONTROL mode before power failure the operation is not memorized In I FEEL CONTROL mode the operation is decided by the initial room temperature at re start Operation 1 If the p...

Страница 5: ...eve C and hook the upper part of indoor unit on the installation plate 1 Then move the unit to the very edge of the left side for putting the piping easily in the back space of the indoor unit After that cut the part of packing material spacer assembly to hook it on the back rib and lift the indoor unit as shown in the figure below Connect the refrigerant piping with the extension pipe B Thrust th...

Страница 6: ...ll the wires lightly to confirm that they do not move If the connecting wire is incorrectly connected to the terminal block the unit does not operate normally If a ground is incorrect it may cause an electric shock Right piping knockout Fasten with wiring clamp Indoor Outdoor unit connecting terminals Power supply terminals Pipe cover Service panel Service panel Pipe cover Rear wiring Loosen termi...

Страница 7: ...e stop valve After refrigerant pipes are connected and evacuated fully open all stop valves on both sides of gas pipe and liquid pipe Operating without fully opening lowers the performance and this causes trouble Tighten the cap to the service port to obtain the initial status Retighten the cap Leak test 2 Outdoor unit connection Connect pipes to the pipe joint part of the stop valve in the same m...

Страница 8: ...mostat does not work during this time After 30 minutes the unit will start the EMERGENCY OPERATION at a fixed temperature setting of 75 F in COOL MODE Perform test run in the following procedure PROCEDURE Press the EMERGENCY OPERATION switch 1 Press it once and after test run for 30 minutes the EMERGENCY COOL MODE starts If the left side lamp of the operation indicator blinks every 0 5 seconds ins...

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