Mitsubishi Electric MSY-A24NA Installation Manual
Split-type air conditioners
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Also See for MSY-A24NA:
- Operating instructions manual (32 pages) ,
- Installation manual (9 pages) ,
- Service manual (49 pages)
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Table of Contents
Am& MITSUBISHI
ELECTRIC
SPLIT=TYPE AIR CONDITIONERS
INSTALLATION
MANUAL
SG79Y963H03
Model names are indicated in 1-3.
When installing
multi units, refer to
the installation
manual of the multi
unit for outdoor unit installation.
li
Required
Tools for Installation
"]
hillips screwdriver
5/32 in. (4 ram) hexagonal wrench I
evel
Flare tool for R410A
|
cale
Gauge manifold for R410A
|
tility knife or scissors
Vacuum pump for R410A
|
in. (75 mm) hole saw
Charge hose for R410A
|
rque wrench
Pipe cutter with reamer
|
rench (or spanner)
J
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
• Be sure to read "THE FOLLOWING
SHOULD ALWAYS
BE OBSERVED
FOR SAFETY" before installing the air conditioner.
• Be sure to observe the warnings and cautions specified
here as they include important items related to safety.
• After reading this manual, be sure to keep it together with the OPERATING
INSTRUCTIONS
for future reference.
Please report to your supply authority or obtain their consent before connecting this equipment to the power supply system.
[] Do not install the unit by yourself
(user).
Incomplete
installation
could cause fire or electric shock, injury due to the unit fall-
ing, or leakage of water. Consult the dealer from whom you purchased the unit or
a qualified installer.
[] Perform
the installation
securely
referring to the installation
manual.
Incomplete
installation
could cause fire or electric shock, injury due to the unit fall-
ing, or leakage of water.
[] Install the unit securely
in a place which can bear the weight of the unit.
If the installation
location cannot bear the weight of the unit, the unit could fall
causing injury.
[] Perform
electrical work according
to the installation
manual and be sure to use
an exclusive
circuit.
Do not connect
other electrical
appliances to the circuit.
If the capacity of the power circuit is insufficient or there is incomplete
electrical
work, it could result in a fire or an electric shock.
[] Ground the unit correctly.
Do not conned
the ground to a gas pipe, water pipe, lightning rod or telephone
ground. Defective grounding
could cause electric shock.
[] Do not damage
the wires
by applying
excessive
pressure
with parts
or
SCreWS.
Damaged wires could cause fire.
[] Be sure to cut off the main power in case of setting
up the indoor P.C. board
or wiring works.
Failure to do so could cause electric shock.
[] Use the specified
wires to connect the indoor and outdoor
units
securely
and
attach the wires firmly
to the terminal block connecting
sections
so the stress
of the wires is not applied to the sections.
Incomplete
connecting and securing could cause fire.
[] Do not install the unit in a place where inflammable
gas may leak.
If gas leaks and accumulates
in the area around the unit, it could cause an explo-
sion.
[] Do not use intermediate
connection
of the power cord or the extension
cord
and do not connect many devices to one AC outlet.
It could cause a fire or an electric shock due to defective contact, defective insula-
tion, exceeding the permissible
current, etc.
[] Be sure to use the parts provided or specified parts for the installation work.
The use of defective parts could cause an injury or leakage of water due to a fire, an
electric shock, the unit falling, etc.
[] When plugging the power supply
plug into the outlet, make sure that there is
no dust, clogging,
or loose parts in both the outlet and the plug. Make sure
that the power supply
plug is pushed completely
into the outlet.
If there is dust, clogging, or loose parts on the power supply plug or the outlet, it could
cause electric shock or fire. If loose parts are found on the power supply plug, replace it.
[] Attach the electrical cover to the indoor unit and the service panel to the outdoor
unit securely.
If the electrical cover of the indoor unit and/or the service panel of the outdoor unit are
not attached securely, it could result in a fire or an electric shock due to dust, water, etc.
[] When installing or relocating
the unit, make sure that no substance
other than
the specified
refrigerant
(R410A) enters the refrigerant circuit.
Any presence of foreign substance such as air can cause abnormal pressure rise
or an explosion.
[] Do not discharge
the refrigerant
into the atmosphere.
If refrigerant
leaks during
installation,
ventilate the room.
If refrigerant comes in contact with a fire, harmful gas could be generated.
[] Check that the refrigerant
gas does not leak after installation
has been com-
pleted.
If refrigerant gas leaks indoors, and comes into contact with the flame of a fan
heater, space heater, stove, etc., harmful substances will be generated.
[] Use appropriate
tools and piping materials for installation.
The pressure of R410A is 1.6 times more than R22. Not using appropriate
tools or
materials and incomplete installation could cause the pipes to burst or injury.
[] When pumping down the refrigerant,
stop the compressor
before disconnecting
the refrigerant
pipes.
If the refrigerant
pipes are disconnected
while the compressor
is running and the
stop valve is open, air could be drawn in and the pressure in the refrigeration
cycle
could become abnormally
high. This could cause the pipes to burst or injury.
[] When installing the unit, securely
connect
the refrigerant
pipes before starting
the compressor.
If the compressor
is started before the refrigerant pipes are connected
and when
the stop valve is open, air could be drawn in and the pressure in the refrigeration
cycle could become abnormally
high. This could cause the pipes to burst or injury.
[] Fasten a flare nut with a torque wrench as specified
in this manual.
If fastened too tight, a flare nut may break after a long period and cause refrigerant
leakage.
[] The unit shall be installed in accordance
with national wiring regulations.
[] Install
a Ground
Fault Interrupt
(GFI) circuit breaker
depending
on the instal-
lation
place.
If the Ground Fault Interrupt (GFI) circuit breaker is not installed, it could cause
electric shock.
[] Perform
the drainage/piping
work
securely
according
to the installation
manual.
If there is defect in the drainage/piping
work, water could drop from the unit, soak-
ing and damaging household
goods.
[] Do not touch
the air inlet or the aluminum
fins of the outdoor
unit.
This could cause injury.
[] Do not instamlthe outdoor
unit where smaml animals
may live.
If small animals enter and touch the electric parts inside the unit, it could cause a
malfunction,
smoke emission, or fire. Also, advise user to keep the area around
the unit clean.
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Table of Contents
Related Manuals for Mitsubishi Electric MSY-A24NA
Summary of Contents for Mitsubishi Electric MSY-A24NA
- Page 1 SG79Y963H03 Required Tools for Installation "] Am& MITSUBISHI hillips screwdriver 5/32 in. (4 ram) hexagonal wrench I evel Flare tool for R410A ELECTRIC cale Gauge manifold for R410A Model names are indicated in 1-3. tility knife or scissors Vacuum pump for R410A When installing multi units, refer to SPLIT=TYPE AIR CONDITIONERS...
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Page 2: Specifications
1-2. SELECTING THE INSTALLATION LOCATION m_ot, Note: Note: Where airflow is not blocked. In rooms where inverter type fluorescent lamps are used, • It is advisable to make a piping loop near outdoor unit so as to reduce vibration transmitted from there. -
Page 3: Installation Diagram
1-4. iNSTALLATiON DIAGRAM ACCESSORIES r Be sure to use wall hole _[/Wall hole cover (D) Check the following parts before installation. sleeve (C) to prevent <Indoor unit> Indoor unit _Seal the wall hole indoor/outdoor connecting } [.gapwith putty (H). wire (A) from contacting (1) Installation plate Wall hole FJ_I/ /... - Page 4 2-1. FIXING OF INSTALLATION PLATE • Find a structural material (such as a stud) in the wall and fix installation plate (1) hori- zontally with fixing screws (2). • To prevent installation plate (1) from vibrating, be sure to install the fixing screws in the holes indicated in the illustration.
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Page 5: Pipe Forming And Drain Piping
2-4. PiPE FORMING AND DRAIN PiPiNG 2-4-1. PiPE FORMING • Place the drain hose below the refrigerant piping. • Make sure that the drain hose is not heaved or snaked. Liquid pipe • Do not pull the hose when applying the tape. Gas pipe •... - Page 6 3-1. CONNECTING WIRES FOR OUTDOOR UNiT 1) Remove the service panel. 2) Remove the conduit cover. 3) Fix the conduit connector to conduit cover with lock nut then secure it against unit with 5/8 in. screws. 1-5/8 in. iU,_ (15 mm) 4) Loosen terminal screw, and connect indoor/outdoor unit connecting wire (A) from the in- door unit correctly on the terminal block.
- Page 7 3=3. PIPE CONNECTION • Fasten flare nut with a torque wrench as specified in the table. • When fastened too tight, flare nut may brake after a long period and cause refrigerant leakage. Indoor unit connection Connect both liquid and gas pipings to indoor unit. •...
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Page 8: Pumping Down
0.05 to 0 MPa [Gauge] (approx. 7.25 to 0 Ibf/in 2 [0.5 to 0 kgf/cm2]). 6) Stop the emergency COOL operation. Press the E.O. SW twice to stop the operation. MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO...