Mitsubishi MXZ-2A30VA, MXZ-2A40VA, MXZ-2A52VA Installation Manual

SPLIT-TYPE AIR CONDITIONER

INSTALLATION MANUAL

	Model MXZ-2A30VA	HFC
	MXZ-2A40VA	utilized
		R410A
	MXZ-2A52VA

Refer to the installation manual of each indoor unit for indoor unit installation.

	CONTENTS
1.	THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR
	SAFETY ...........................................................................................	2
2.	INSTALLATION DIAGRAM & ACCESSORIES ................................	2
3.	SELECTING THE INSTALLATION LOCATION ................................	3
4.	OUTDOOR UNIT INSTALLATION ...................................................	4
5.	INDOOR/OUTDOOR UNITS CONNECTION FINISHING AND
	TEST RUN .......................................................................................	5

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FOR INSTALLER

1.THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY

•Please provide an exclusive circuit for the air conditioner and make sure that no other electrical appliances are connected to it.

•Be sure to read “THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY” before installing the air conditioner.

•Be sure to observe the cautions specified here as they include important items related to safety.

•The indications and meanings are as follows.

WARNING: Could lead to death, serious injury, etc.

CAUTION: Could lead to serious injury in particular environments when operated incorrectly.

•After reading this manual, be sure to keep it together with the OPERATING INSTRUCTIONS in a handy place on the customer’s site.

WARNING

■Do not install the unit by yourself (customer).

Incomplete installation could cause injury due to fire, electric shock, the unit falling or leakage of water. Consult the dealer from whom you purchased the unit or special installer.

■Install the unit securely in a place which can bear the weight of the unit.

When installed in an insufficient strong place, the unit could fall causing injury.

■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 fixing could cause fire.

■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 insulation, exceeding the permissible current, etc.

■Check that the refrigerant gas due not leak after installation has completed.

If refrigerant gas leaks indoors, and comes into contact with the fire of a fan heater, space heater, stove, etc., harmful substances will be generated.

■Perform the installation securely referring to the installation manual.

Incomplete installation could cause a personal injury due to fire, electric shock, the unit falling or leakage of water.

■Perform electrical work according to the installation manual and be sure to use an exclusive circuit.

If the capacity of the power circuit is insufficient or there is insufficient electrical work, it could result in a fire or an electric shock.

■Attach the electrical cover to the indoor unit and the service panel to the outdoor unit securely.

If the electrical cover in the indoor unit and/or the service panel in the outdoor unit are not attached securely, it could result in a fire or an electric shock due to dust water, etc.

■Be sure to use the part provided or specified parts for the installation work.

The use of defective parts could cause an injury due to a fire, an electric shock, the unit falling, leakage of water, etc.

■Be sure to cut off the main power in case of setting up the indoor electronic control P.C. board or wiring works.

It could cause an electric shock.

■The appliance shall be installed in accordance with national wiring regulations.

■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.

CAUTION

■Perform earthing.

Do not connect the earth wire to a gas pipe, water pipe, lightning rod or telephone earth wire. Defective earthing 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.

■Fasten a flare nut with a torque wrench as specified in this manual.

When fastened too tight, a flare nut may broken after a long period and cause a leakage of refrigerant.

■Install an earth leakage breaker depending on the installation place (Where it is humid).

If a earth leakage breaker is not installed, it could cause an electric shock.

■Perform the drainage/piping work securely according to the installation manual.

If there is a defect in the drainage/piping work, water could drop from the unit and household goods could be wet and damaged.

2. INSTALLATION DIAGRAM & ACCESSORIES

Before installation

This installation manual is only for the outdoor unit installation. In installing the indoor units, refer to the installation manual attached to each indoor unit.

Any structural alternations necessary for the installation must comply with the local building code requirements.

Open as a rule More than 500 mm if the front and both sides are open

More than 100 mm

D

K

H

C

I

E

J

More than 100 mm More than 200 mm if there are obstacles to both sides

F

Open as a rule More than 500 mm if

the back, both sides More than 350 mm and top are open

Note:

The dimensions given along the arrows above are required to guarantee the air conditioner’s performance. Install the unit in as wide a place as possible for later service or repairs.

2

ACCESSORIES			Parts to be locally procured
Check the following parts before installation.				A	Power supply cord	1
<Outdoor unit>					(3-core 2.5 mm2)
					Indoor/outdoor unit connecting wire
1	Drain socket	1		B		1
					(4-core 1.0 mm2/1.5 mm2)
				C	Extension pipe According to “Selecting pipe size”	1
				D	Wall hole cover	1
				E	Piping tape	1
				F	Extension drain hose (or soft vinyl chloride hose of	1
					15 mm in internal dia. or hard vinyl chloride pipe VP16)
				G	Refrigeration oil	Little amount
				H	Putty	1
				I	Pipe fixing band	2 to 7
					(The number depends on the pipe length.)
				J	Fixing screw for I	2 to 7
					(The number depends on the pipe length.)
				K	Wall hole sleeve	1
				L	Soft vinyl chloride hose of 25 mm in internal	1
					dia. or hard vinyl chloride pipe VP25

NOTE:

•Do not use the drain socket and the drain cap in the cold region. Drain may freeze and it makes the fan stop.

•The “Q’ty” for B to K in the above table is the quantity to be used per indoor unit.

WARNING:

Be sure to use specified accessories and supplied parts for installation work. If there is some deficiency in parts, it may cause a risk of fire, electric shock, injury by a unit fall or water leakage.

Constraints On Indoor Unit Installation

You should note that indoor unit that can be connected to this outdoor unit have the following constraints on them.

•Indoor units with model numbers 22, 25 and 35 can be connected. Refer to the table below for possible indoor unit combinations.

MXZ-2A30VA Combination

2 UNIT

22+22

22+25

25+25

MXZ-2A40VA Combination

2 UNIT

22+22

22+25

22+35

25+25

25+35

MXZ-2A52VA Combination

2 UNIT

22+22

22+25

22+35

25+25

25+35

35+35

3. SELECTING THE INSTALLATION LOCATION

•Where it is not exposed to strong wind.

•Where airflow is good and dustless.

•Where it is not exposed to rain and direct sunshine.

•Where neighbours are not annoyed by operation sound or hot air.

•Where rigid wall or support is available to prevent the 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 fix the unit legs.

•Where it is at least 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 affected device.

•Install the unit horizontally.

•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:

It is advisable to make a piping loop near outdoor unit so as to reduce vibration transmitted from there.

WARNING:

Be sure to install the unit in a place that well sustains its weight.

Installing in a place with less strength may result in a unit falling, causing a risk of injury.

	CAUTION:
Avoid the following places for installation where air conditioner trouble is liable to occur.
•	Where flammable gas could leak.		150	500
•	Where there is much machine oil.			Air in
•	Salty places such as the seaside.
• Where sulfide gas is generated such as		285	inAir	17.5	304~325	344.5
•	Where there is high-frequency or wire-
	a hot spring.
	less equipment.			Air out
						× 21 Oval holes
				4-10
				800

(Unit: mm)

Note:

When operating the air conditioner in low outside temperature, 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, it is recommended to install a baffle board on the air outlet side of the outdoor unit.

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