Selecting The Installation Location; Specifications; Refrigerant Pipes - Mitsubishi Electric MSY-A24NA Installation Manual

1-2. SELECTING THE INSTALLATION LOCATION
* Where airflow is not blocked.
+ Where cool air spreads over the entire room.
« Rigid wall without vibration.
+ Where it is not exposed to direct sunshine.
Note:
received.
+ Where easily drained. + Where itis not exposed to strong wind.
* Ata distance 3 ft. (1 m) or more away from your TV + Where airflow is good and dustless.
and radio. Operation of the air conditioner may inter- * Where neighbours are not annoyed by operation
fere with radio or TV reception. An amplifier may be sound or hot air.
required for the affected device. + Where rigid wall or support is available to prevent the
* Ina place as far away as possible from fluorescent
and incandescent lights (so the infrared remote control «
can operate the air conditioner normally). .
* Where the air filler can be removed and replaced easily. secure the unit legs.
Note: .
Install indoor unit at a high position on the wall where air
can distribute over the entire room.
REMOTE CONTROLLER
* Where itis easy to operate and easily visible. affected device.
* Where children cannot touch it. * Install the unit horizontally.
* Select a position about 4 ft. (1.2 m) above the floor .
and check that signals from the remote controller are
surely received by the indoor unit from that position
(beep' or 'beep beep' receiving tone sounds). After
that, attach remote controller holder to a pillar or wall
and install wireless remote controller.
1-3. SPECIFICATIONS
1-3-1. POWER SUPPLY AND INDOOR/OUTDOOR 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 will not loosen.
Connecting wires and connecting ground wire
* Use solid conductor AWG14 or stranded conductor AWG14.
* Use double insulated copper wire with GOOV insulation.
* Use copper conductors only.
* Follow local electrical code.
Power supply cable and ground wire
* Use solid or stranded conductor AWG14.
* Use copper conductors only.
* Follow local electrical code.
Note:
When the indoor unit is powered from the outdoor unit, a disconnect switch needs to be
installed to power supply circuit (between indoor and outdoor unit) depending on local
code.
1-3-2. REFRIGERANT PIPES
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increase of operation sound or vibration.
Where there is no risk of combustible gas leakage.
When installing the unit at a high level, be sure to
Where it is at least 10 ft. (3 m) away from the antenna
of TV set or radio. Operation of the air conditioner may
interfere with radio or TV reception in areas where
reception is weak. An amplifier may be required for the
Please install it in an area not affected by snowfall or
blowing snow. In areas with heavy snow, please install
a canopy, a pedestal and/or some baffle boards.
Note:
In rooms where inverter type fluorescent lamps are used, +
the signal from the wireless remote controller may not be
.
OUTDOOR UNIT
Itis advisable to make a piping loop near outdoor unit
so as to reduce vibration transmitted from there.
For increased efficiency, install the outdoor unit in a
location where continuous direct sunlight or excessive
water can be avoided as much as possible.
Note:
When operating the air conditioner in low outside tempera-
ture, be sure to follow the instructions described below.
* Never install the outdoor unit in a place where its air
inlet/outlet side may be exposed directly to wind.
* To prevent exposure to wind, install the outdoor unit
with its air inlet side facing the wall.
* To prevent exposure to wind, itis recommended
to install a baffle board on the air outlet side of the
outdoor unit.
Avoid the following places for installation where air
conditioner trouble is liable to occur.
* Where flammable gas could leak.
* Where there is much machine oil.
* Salty places such as the seaside.
* Where sulfide gas is generated such as a hot
spring.
* Where there is high-frequency or wireless equipment.
Electrical specifications
MODEL
Power supply (V, PHASE, Hz)
Min. Circuit Ampacity
Fan motor (F.L.A.)
Power supply (V, PHASE, Hz)
Max. Fuse size (time delay) (A)
Min. Circuit Ampacity
Fan motor (F.L.A.)
Compressor
Control voltage
MSY-A24NA MSZ-A24NA
208/230, 1, 60 208/230, 1, 60
1.0 1.0
0.76 0.76
208/230, 1, 60 208/230, 1, 60
20 20
17 17
0.93 0.93
10.1 10.1
16 16
Indoor unit - Remote controller: (Wireless)
Indoor unit - Outdoor unit: DC12-24V (Polar)
* Ensure that the 2 refrigerant pipes are insulated to prevent condensation. Mini
* Refrigerant pipe bending radius must be 4 in. (100 mm) or more. Outside wall thick. Insulation
Pipe diameter ness thickness Insulation material
ZN CAUTION
. . te . . . inch (mm)
Be sure to use the insulation of specified thickness. Excessive thickness may cause
incorrect installation of the indoor unit and lack of thickness may cause dew drippage. For liquid 1/4 (6.35) 0.0315 (0.8) | 5/46 (8) Heat resisting foam
plastic 0.045 Specific
For gas 5/8 (15.88) | 0.0394 (1.0) | 5/16 (8) gravity
* This unit has flared connections on both indoor and outdoor sides. Limits
* Remove the outdoor units valve cover, then connect the pipe. ;
* Refrigerant pipes are used to connect the indoor and outdoor units. Pipe length 100Ft. (30 m) max.
* Be careful not to crush or bend the pipe in pipe bending. Height difference 50 ft. (15 m) max.
No. of bends 40 max.
* Refrigerant adjustment... If pipe length exceeds 25 ft. (7m), additional refrigerant
(R410A) charge is required. Up to 25 ft. (7m) No additional charge is
(The outdoor unit is charged with refrigerant for pipe length up to 25 ft. [7 m]) P , required.
Pipe length
Exceeding 25 ft. (7m)
Additional charge is required.
(Refer to the table below.)
added
Refrigerant to be
1.08 oz. each 5 ft. (20g/m)