Mitsubishi Electric MSZ-GA24NA Installation Manual
Split-type air conditioners
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Also See for MSZ-GA24NA:
- Operating instructions manual (32 pages) ,
- Installation manual (9 pages) ,
- Service manual (48 pages)
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MITSUBISHI
ELECTRIC
SPLIT-TYPE
AIR CONDITIONERS
INSTALLATION MANUAL
JG79A169H01
MSZ-GA24NA
MSY-GA24NA
When installing multi units, refer to
the installation
manual of the multi
unit for outdoor unit installation.
I
Tools for Installation
Required
Phillips screwdriver
5/32 in. (4 mm) hexagonal
Level
wrench
Scale
Flare tool for R410A
Utility knife or scissors
Gauge manifold for R410A
3 in. (75 mm) hole saw
Vacuum pump for R410A
Torque wrench
Charge hose for R410A
Wrench (or spanner)
Pipe cutter with reamer
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
• Be sure to read these safety precautions and instructions.
• Be sure to observe the warnings and cautions specified
here.
• After reading this manual, be sure to store it 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.
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• Do not install the unit by yourself (user).
Improper or incomplete installation
could cause fire, electric shock, injury due to
the unit falling, or water leakage. Consult a qualified installer or the dealer from
whom you purchased the unit.
• Follow the instructions
detailed
in 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 that 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 connect the ground wire to a gas pipe, water pipe, lightning rod or tel-
ephone ground. Defective grounding
could cause electric shock.
• Do not damage the wires.
Damaged wires could cause fire.
• Be sure to shut off the main power when setting up the indoor P.C. board or
wiring.
Failure to do so could cause electric shock.
• Use the specified wires to securely connect the indoor and outdoor units. At-
tach the wires firmly to avoid applying
stress to the terminal block.
Improper connection could cause fire.
• Do not install the unit in a place where flammable
gas may leak.
If gas leaks and accumulates
around the unit, it could cause an explosion.
• Do not use intermediate
connection of the power cord or the extension
cord.
Do not connect many devices to one AC outlet.
It could cause a fire or an electric shock.
• 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, blockage, or loose parts both in the outlet and on the plug. Verify that
the power supply plug is completely
in the outlet.
If there is dust, blockage, 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.
•
Securely attach the electrical
cover to the indoor unit and the service panel to
the outdoor unit.
If the electrical cover of the indoor unit and/or the service panel of the outdoor unit are
not attached securely, dust, water, etc. could collect in the unit and could cause a fire or
an electric shock.
•
When installing or relocating
the unit, make sure that no substance
other than
the specified refrigerant
(R410A) enters the refrigerant circuit.
Any foreign substances
in the refrigerant circuit can cause abnormal pressure rise
or an explosion.
•
De not discharge the refrigerant into the atmosphere. Check that the refrigerant gas
does not leak after installation
has been completed.
If refrigerant leaks during
installation, ventilate the room.
If refrigerant comes in contact with a fire, harmful gas could be generated.
If refrigerant gas leaks indoors, and comes into contact with the flame of a fan
heater, space heater, stove, etc., harmful gases will be generated.
•
Use appropriate
tools and piping materials for installation.
The pressure of R410A is 1.6 times higher than R22. Not using the appropriate
tools and materials, or improper installation
could cause the pipes to burst causing
an 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, causing the pipes to burst.
•
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 the
stop valve is open, air could be drawn in and the pressure in the refrigeration
cycle
could become abnormally
high, causing the pipes to burst.
•
Fasten a flare nut with a torque wrench as specified in this manual.
If fastened too tight, a flare nut could break and cause refrigerant
leakage.
•
Install the unit according
to national wiring regulations.
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• Depending on the installation
area, install a Ground Fault Interrupt (GFI) circuit
•
Do not touch the air inlet or the aluminum
fins of the outdoor unit.
breaker.
If the Ground Fault Interrupt (GFI) circuit breaker is not installed, an electric shock
could occur.
• Perform
the drainage/piping
work
securely
according
to the installation
manual.
If there is defect in the drainage/piping
work, water could drip from the unit, and
damage household
items.
This could cause injury.
•
Do not install the outdoor unit where small animals may live.
If small animals enter the unit and damage its electrical parts, it could cause a
malfunction,
smoke emission, or fire. Keep the area around the unit clean.
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Table of Contents
Related Manuals for Mitsubishi Electric MSZ-GA24NA
Summary of Contents for Mitsubishi Electric MSZ-GA24NA
- Page 1 Required JG79A169H01 MSZ-GA24NA MITSUBISHI Phillips screwdriver 5/32 in. (4 mm) hexagonal Level wrench MSY-GA24NA ELECTRIC Scale Flare tool for R410A Utility knife or scissors Gauge manifold for R410A When installing multi units, refer to SPLIT-TYPE AIR CONDITIONERS 3 in. (75 mm) hole saw...
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Page 2: Specifications
POWER SUPPLY INDOOR/OUTDOOR WIRE CONNECTION MODEL MSY-GA24NA MSZ-GA24NA • 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. Power supply 208/230, 1,60 •... -
Page 3: Installation Diagram
1-4. INSTALLATION DIAGRAM Use the wall hole sleeve .,//Wall hole cover (D) (C) to prevent indoor/out- indoor unit _Seai thewail hole ] ACCESSORIES door connecting wire (A) F)_) _gapwith putty(H). J from contacting metal Check the following parts before installation. Wail hole F_J// <Indoor unit>... - Page 4 2-1. ATTACHING THE INSTALLATION PLATE .../ ..2W/8 in. (72 mm) or more Cehimg 4 in (100 mm) or more for left and • Find a stud in the wall to attach installation plate (1) horizontally on the wall with screws (2). V//i/!//i/!_//!/i/!//i/!/i/!/ii/!_/_ ..
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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 crowded or bent. Liquid pipe Gas pipe • Do not pull the hose when applying the tape. •... -
Page 6: Flare Connection
3-1. CONNECTING WIRES FOR OUTDOOR UNIT 1) Remove the service panel. 2) Remove the conduit cover. 3) Attach the conduit connector to conduit cover with lock nut then secure it against unit with screws. 5/8 in. wead _(15mm) 1-3/8 4) Connect ground wires of indoor/outdoor unit connecting wire (A) and power supply cord cord (K) -
Page 7: Auto Restart Function
4-1. PURGING PROCEDURES AND LEAK TEST -0.101 Compound pressure gauge _4 to 5 turns Stop valve cap (-30 in.Hg (for R410A) 1) Remove service port cap of stop valve on the side of the outdoor unit gas pipe. (Torque 19.6 to [-760 rnmHg]) Pressure gauge 2) Connect gauge manifold... -
Page 8: Pumping Down
6) Stop the emergency COOL operation. To stop operation, press the E.O. SW several times until all LED lamps turn off. Refer to operating instructions for details. MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN...