Daikin 2MXS18GVJU Installation Manual

3P207257-2 M07B019

DAIKIN AIR CONDITIONER

• After completing installation, test the unit to check for installation errors. Give the user adequate
instructions concerning the use and cleaning of the unit according to the Operation Manual.

Safety Precautions

• If the refrigerant gas leaks during installation, ventilate the area immediately.

Refrigerant gas may produce a toxic gas if it comes in contact with fire such as from a fan heater, stove or cooking device.
Exposure to this gas could cause severe injury or death.

• Refrigerant gas is heavier than air and replaces oxygen. A massive leak could lead to oxygen depletion,

especially in basements, and an asphyxiation hazard could occur leading to serious injury or death.

• Do not install unit in an area where flammable materials are present due to risk of explosion resulting in serious

injury or death.

• After completing the installation work, check that the refrigerant gas does not leak.

Refrigerant gas may produce a toxic gas if it comes in contact with fire such as from a fan heater, stove or cooking device.
Exposure to this gas could cause severe injury or death.

• Do not ground units to water pipes, telephone wires or lightning rods because incomplete grounding could

cause a severe shock hazard resulting in severe injury or death, and to gas pipes because a gas leak could
result in an explosion which could lead to severe injury or death.

• Safely dispose of the packing materials.

Packing materials, such as nails and other metal or wooden parts, may cause stabs or other injuries.
Tear apart and throw away plastic packaging bags so that children will not play with them.
Children playing with plastic bags face the danger of death by suffocation.

• The following safety symbols are used throughout this manual:

Be sure to observe this instruction.

Be sure to establish a ground
connection.

Never attempt.

DANGER

• Do not ground units to telephone wires or lightning rods because lightning strikes could cause a severe shock

hazard resulting in severe injury or death, and to gas pipes because a gas leak could result in an explosion
which could lead to severe injury or death.

• Read these Safety Precautions carefully to ensure correct installation.

• This manual classifies the precautions into DANGER, WARNING and CAUTION. Be sure to follow all
the precautions below: they are all important for ensuring safety.

Two-dimensional bar code
is a code for manufacturing.

Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.

DANGER

Failure to follow any of WARNING is likely to result in such grave consequences as death or
serious injury.

WARNING

Failure to follow any of CAUTION may in some cases result in grave consequences.

CAUTION

Safety Precautions

WARNING

• Installation should be left to the authorized dealer or another trained professional.

Improper installation may cause water leakage, electrical shock, fire, or equipment damage.

• Install the air conditioner according to the instructions given in this manual.

Incomplete installation may cause water leakage, electrical shock, fire or equipment damage.

• Be sure to use the supplied or exact specified installation parts.

Use of other parts may cause the unit to come to lose, water leakage, electrical shock, fire or equipment damage.

• Install the air conditioner on a solid base that is level and can support the weight of the unit.

An inadequate base or incomplete installation may cause injury or equipment damage in the event the unit falls off the base or comes loose.

• For wiring, use a wire or cable long enough to cover the entire distance with no splices if possible.
Do not use an extension cord. Do not put other loads on the power supply.
Use a only a separate dedicated power circuit.

(Failure to do so may cause abnormal heat, electric shock, fire or equipment damage.)

• Use the specified types of wires for electrical connections between the indoor and outdoor units.
Follow all state and local electrical codes.

Firmly clamp the interconnecting wires so their terminals receive no external stresses.
Incomplete connections or clamping may cause terminal overheating, fire or equipment damage.

• After connecting all wiring be sure to shape the cables so that they do not put undue stress on the electrical
covers, panels or terminals.

Install covers over the wires. Incomplete cover installation may cause terminal overheating, electrical shock,fire or equipment damage.

• When installing or relocating the system, be sure to keep the refrigerant circuit free from all substances other
than the specified refrigerant (R410A), such as air.

(Any presence of air or other foreign substance in the refrigerant circuit causes an abnormal pressure rise which may result in rupture,
resulting in injury.)

• During pump-down, stop the compressor before removing the refrigerant piping.

If the compressor is still running and the stop valve is open during pump-down, air will be sucked in when the refrigerant piping is removed,
causing abnormally high pressure which could lead to equipment damage or and personal injury.

• During installation, attach the refrigerant piping securely before running the compressor.

If the compressor is not attached and the stop valve is open during pump-down, air will be sucked in when the compressor is run, causing
abnormally high pressure which could lead to equipment damage and personal injury.

• Install a leak circuit breaker, as required.

If a leak circuit breaker is not installed, electric shock may result.

• Be sure to install a ground fault circuit interrupter breaker.

Failure to install a ground fault circuit interrupter breaker may result in electrically shocks, or fire personal injury.

• Be sure to use a dedicated power circuit. Never use a power supply shared by another appliance.
Follow all appropriate electrical codes.

• Electrical work should be carried out in accordance with the installation manual and the national, state and local
electrical wiring codes.

Insufficient capacity or incomplete electrical work may cause electrical shock, fire or equipment damage.

CAUTION

• Do not install the air conditioner where gas leakage would be exposed to open flames.

If the gas leaks and builds up around the unit, it may catch fire.

• Establish drain piping according to the instructions of this manual.

Inadequate piping may cause water damage.

• Tighten the flare nut according to the specified torque. A torque wrench should be used.

If the flare nut is tightened too much, the flare nut may crack over time and cause refrigerant leakage.

• Do not touch the heat exchanger fins.

Improper handling may result in injury.

• Be very careful about product transportation.

Some products use PP bands for packaging. Do not use any PP bands for a means of transportation. It is dangerous.

• Make sure to provide for adequate measures in order to prevent that the outdoor unit be used as a shelter by
small animals.

Small animals making contact with electrical parts can cause malfunctions, smoke or fire. Please instruct the customer to keep the area
around the unit clean.

Accessories

Precautions for Selecting the Location

Accessories supplied with the outdoor unit:

OUTDOOR UNIT

1) Choose a place solid enough to bear the weight and vibration of the unit, where the operation noise will not be
amplified.

2) Choose a location where the hot air discharged from the unit or the operation noise will not cause a nuisance to the
neighbors of the user.

3) Avoid places near a bedroom and the like, so that the operation noise will cause no trouble.

4) There must be sufficient spaces for carrying the unit into and out of the site.

5) There must be sufficient space for air passage and no obstructions around the air inlet and the air outlet.

6) The site must be free from the possibility of flammable gas leakage in a nearby place.

7) Install units, power cords and inter-unit cables at least 9.5 feet away from television and radio sets. This is to
prevent interference to images and sounds. (Noises may be heard even if they are more than 9.5 feet away
depending on radio wave conditions.)

8) In coastal areas or other places with salty atmosphere of sulfate gas, corrosion may shorten the life of the air
conditioner.

9) Since drain flows out of the outdoor unit, do not place under the unit anything which must be kept away from
moisture.

Cannot be installed hanging from ceiling or stacked.

NOTE

Construct a large canopy.
Construct a pedestal.

Install the unit high enough off the
ground to prevent burying in snow.

When operating the air conditioner in a low outdoor ambient
temperature, be sure to follow the instructions described below.

1)To prevent exposure to wind, install the outdoor unit with its

suction side facing the wall.

2)Never install the outdoor unit at a site where the suction side

may be exposed directly to wind.

3)To prevent exposure to wind, it is recommended to install a

baffle plate on the air discharge side of the outdoor unit.

4)In heavy snowfall areas, select an installation site where the

snow will not affect the unit.

A Installation Manual

B Drain plug C Tube

D Binding band

There is on the bottom
packing case.

1

1

2

1

CAUTION

Indoor/Outdoor Unit Installation Drawings

Cut thermal insulation
pipe to an appropriate
length and wrap it with
tape, making sure that no
gap is left in the insulation
pipe’s cut line.

Wrap the insulation
pipe with the finishing
tape from bottom to top.

Caulk
pipe hole
gap
with putty.

(Foot bolt-hole centres)

22-13/16 in.

(Foot bolt-hole

centres)

13 in.

9.8 inch from wall

Allow space for piping
and electrical servicing.

Allow 11.8 inch of
work space below
the ceiling surface.

If there is the danger of the unit falling
or overturning, fix the unit with
foundation bolts, or with wire or other
means.

If the location does not have good
drainage, place the unit on a level
mounting base (or a plastic pedestal).
Install the outdoor unit in a level
position. Failure to do so may result in
water leakage or accumulation.

Level mounting base
(available separately)

Clamping material

Insulation tube
Service lid

Tape

Also insulate the connection on the outdoor unit.

Use tape or insulating material on all connections to
prevent air from getting in between the copper piping
and the insulation tube.
Be sure to do this if the outdoor unit is installed above.

For installation of the indoor units, refer to the installation manual which was provided with the units.
(The diagram shows a wall-mounted indoor unit.)

● Do not connect the embedded branch piping and the outdoor unit when only carrying out piping work without
connecting the indoor unit in order to add another indoor unit later.

Make sure no dirt or moisture gets into either side of the embedded branch piping.
See “6 Refrigerant Piping Work” in “Outdoor Unit” for details.

●

It is impossible to connect the indoor unit for one room only. Be sure to connect at least 2 rooms.

CAUTION

Stop valve cover

Installation

Outdoor Unit Installation Guidelines

More than 3-15/16 More than 13-3/4

Side view

47-3/16
or less

More than 1-15/16 More than 1-15/16

Top view

More
than 3-15/16

More than 13-3/4

Top view

More than 3-15/16
More than 13-3/4

More than 1-15/16

● Install the unit horizontally.

● The unit may be installed directly on a concrete verandah or a solid place if drainage is good.

● If the vibration may possibly be transmitted to the building, use a vibration-proof rubber (field supply).

● Where a wall or other obstacle is in the path of outdoor unit’s intake or exhaust airflow, follow the installation guidelines

below.

● For any of the below installation patterns, the wall height on the exhaust side should be 4 ft or less.

Wall facing one side

Walls facing two sides

Walls facing three sides

Unit: in.

Precautions on Installation

●

Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installed.

●

In accordance with the foundation drawing in fix the unit securely by means of the foundation bolts. Prepare four sets of
M3/8” or M7/16” foundation bolts, nuts and washers each which are available on the market.

● It is best to screw in the foundation bolts until their lengths are 3/4” from the foundation surface.

3/4”