Midea MSH-18HRIN1 User manual

(Inverter Split Type)
Please read this installation manual completely
before installing the product.
When the power cord is damaged, replacement
work shall be performed by authorized personnel
only.
Installation work must be performed in accordance
with the national wiring standards by authorized
personnel only.
Contact the authorised service technician for
repair or maintenance of this unit.
ROOM AIR CONDITIONER
INSTALLATION MANUAL

CONTENTS
SAFETY PRECAUTIONS...................................................................2
INSTALLATION OF INDOOR AND OUTDOOR UNITS.......................3
ELECTRICAL WORK ........................................................................9
AIR PURGING ..................................................................................
TEST RUNNING...............................................................................
1
Contents
11
13
!
WARNING
Do not install, remove and reinstall the unit by yourself.
Improper installation will cause water leakage, electrical shock,
or fire. Please consult authorized dealer or specialist for the
installation work. Please note fault caused by improper
installation is not covered by warranty.
Unit must be installed in an easily accessible area. Any
additional cost required to hire a special equipment to
service the unit will be the responsibility of the customer.

2
Safety precautions
!
WARNING
Do not install it yourself.
Install the unit securely in a place which
can bear the weight of the unit.
Use the specified wires to connect the
indoor and outdoor units securely and
attach the wires firmly to the terminal
board connecting sections so the stress
of the wires is not applied to the sections
Incorrect 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
When installed in an insufficiently strong place,
the unit could fall causing injury.
Incorrect connection and fixing could cause a fire.
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.
The use of defective parts could cause an injury
due to a fire, electric shock, the unit falling, etc.
Incorrect installation could cause a personnel
injury due to fire, electric shock, the unit falling
or leakage of water.
If the electrical part covers of the indoor unit
and/or the service panel of the outdoor unit
are not attached securely, it could result in a
fire or electrical shock due to dust, water, etc.
Perform electrical work according to the
installation manual and be sure to use an
exclusive circuit.
Be sure to use the part provided or
specified parts for the installation work.
Perform the installation securely referring
to the installation instruction.
Check that the refrigerant gas does not
leak after installation is completed.
Attach the electrical part cover to the indoor unit and
the service panel to the outdoor unit securely.
Be sure to read the following WARNING before installing the air
conditioner.
Be sure to observe the cautions specified here as they include
important items related to safety.
After reading this instructions, be sure to keep it together with the
owners manual in a handy place for future reference.
SAFETY PRECAUTIONS
The following should be always observed for safety:
!
CAUTIONS
Do not install the unit in a place where
a flammable gas leaks.
If gas leaks and accumulates in the area
surrounding the unit, it could cause a
explosion.
If there is a defect in the drainage/piping work,
water could leak from the unit and household
goods could get wet and be damaged.
Perform the drainage/piping work according to the
installation instruction.

3
Installation Instruction
INSTALLATION OF INDOOR AND OUTDOOR UNITS
Read completely, then follow step by step.
Indoor unit
Do not expose the indoor unit to heat or steam.
Select a place where there are no obstacles
in front or around the unit.
Make sure that condensation drainage can
be conveniently routed away.
Do not install near a doorway.
Ensure that the space on the left and right
of the unit is more than 12cm.
Use a stud finder to locate studs to prevent unnecessary damage to the wall.
A minimum pipe run of 3 metres is required to minimise vibration & excessive noise.
The indoor unit should be installed on the wall at a height of 2.3 metres or more
from the floor.
The indoor unit should be installed allowing a minimum clearance of 15cm from
the ceiling.
Any variations in pipe length will/may require adjustment to refrigerant charge.
Outdoor unit
If an awning is built over the outdoor unit to
prevent direct sunlight or rain exposure,
make sure that heat radiation from the
condenser is not restricted.
Ensure that the clearance around the back
of the unit is more than 30cm and left side is
more than 30cm. The front of the unit should
have more than 200cm of clearance and the
connection side (right side) should have more
than 60cm of clearance.
Do not place animals and plants in the path of the air inlet or outlet.
Take the air conditioner weight into account and select a place where noise
and vibration will not be an issue.
Select a place so that the warm air and noise from the air conditioner do not
disturb neighbors.
If the outdoor unit is installed on a roof structure, be sure to level the unit.
Ensure the roof structure and anchoring method are adequate for the unit
location.
Consult local codes regarding rooftop mounting.
If the outdoor unit is installed on roof structures or external walls, this may
result in excessive noise and vibration, and may also be classed as a non
serviceable installation.
More than 30cm
More than 60cm
More than 30cm
More than 200cm
Rooftop installation:
2.3m or more
More than 15cm
More than 12cm
More than 12cm
Fig.1

1
2
3
4
5
6
7
1
1
1
8
8
1
Parts you
must
purchase
Note: Except the above parts provided, the other parts needed during
installation you must purchase.
Mounting screw B
ST2.9x10-C-H
Remote controller
holder
This illustration is for explanation purposes only.
Copper lines must be insulated independently
4
Installation Instruction
Items packed with the unit
6.35
9.53
12.7
82
Loop the
connective
cable.
Self-tapping Screw B ST2.9X10
Fig.3
Remote controller
Installation Plate
Name of Accessories
Self-tapping Screw A ST3.9X25
Seal
Drain Joint
Connecting
pipe
Assembly
Liquid side
Clip Anchor
Number Qty
Gas side
9Remote controller holder 1
8
9
Remote Controller
7
Ensure that the space around the left and
right of the indoor unitis more than12cm.
The indoor unit should be installed allowing
a minimum clearance of 15cm from the
ceiling.
Use a stud finder to locate studs to prevent
unnecessary damage to the wall.
A minimum pipe run of 3 metres is required
to minimise vibration & excessive noise.
The indoor unit should be installed on the
wall at a height of 2.3 metres or more from
the floor .
At lease two of the Directions A, B and C
should be freefrom obstructions.
CAUTION
C
B
A
60cm above
60cm above
30cm above
200cm above
6
2
3
1
12cm above
12cm above
Air Filter
15cm above
Air Outlet
30cm above
( 12000Btu/h model)
( 12000Btu/h model)
On/Off
Sleep
Fan
Swing
AirDirection
TimerOn
TimerOff
Mode
Hr.
ON TIMER
Hr.
Off TIMER
SET TEMP
Auto

5
Installation Instruction
INDOOR UNIT INSTALLATION
1.
2. Drill a hole in the wall
Fig.4
Fig.5
Note:
Fit the Installation Plate
1. Fit the installation plate horizontally
on structural parts of the wall with
spaces around the installation plate.
2. If the wall is made of brick, concrete or
the like, drill eight (8) 5mm diameter holes
in the wall. Insert Clip anchor for appropriate
mounting screws.
3. Fit the installation plate on the wall with eight
(8) type “A” screws.
Correct orientation
of Installation Plate
Fit the Installation Plate and drill holes in the wall according to the wall structure
and corresponding mounting points on the installation plate.
(Dimensions are in “mm” unless otherwise stated)
1. Determine hole positions according to
the diagram detailed in Fig.5. Drill
one (1) hole ( 65mm) slanting slightly
to outdoor side.
2. Always use wall hole conduit when
drilling metal grid, metal plate or the like.
Wall
Indoor Outdoor
5-7mm
12000Btu/h model 18000Btu/h
Fig.6
270~370
878
659
133
40
40
270
27
6
55
55
39
Above 15cm from the ceiling
Outline of the Indoor Unit Installation Plate
Above 12cm
from the wall
Above 12cm
from the wall
Rear-right Pipe
Hole 65
Rear-left Pipe
Hole 65
Above 15cm from the ceiling
Outline of the Indoor Unit Installation Plate
Above 12cm
from the wall
Rear-right Pipe
Hole 65
Rear-left Pipe
Hole 65
Above 12cm
from the wall
12000Btu/h model
70
750
45
250
70
------------------------
------------------------
18000Btu/h model
Indoor unit outline
120mm or more
to wall 120mm or more
to wall
Left refrigerant
pipe hole 65 Right refrigerant
pipe hole 65
Installation plate
293
920
150mm or more to ceiling
50
50

6
Installation Instruction
1. For the left-hand and right-hand piping, remove the pipe cover from the side panel.
Explain to clients that the pipe cover must be kept as it may be used when relocate the
air conditioner to any other place.
2. For the rear-right-hand and rear-left-hand piping, install the piping as shown. Bend the
connective pipe to be laid at 43mm height or less from the wall.
3. Fix the end of the connective pipe. (Refer to Tightening Connection in REFRIGERANT
PIPING CONNECTION)
Connective pipe
Indoor unit outline
Connective pipe
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43
1. Pass the piping through the hole in the wall.
2. Put the upper claw at the back of the indoor unit on
the upper hook of the installation plate, move the
indoor unit from side to side to see that it is securely
hooked.
3. Piping can easily be made by lifting the indoor unit
with a cushioning material between the indoor unit
and the wall. Get it out after finish piping.
4. Push the lower part of the indoor unit up on the wall,
Then move the indoor unit from side to side, up and
down to check if it is hooked securely.
Fig.9
4. Indoor unit installation
Fig.7
Fig.8
3. Connective Pipe and Drainage Installation
1. Run the drain hose sloping downward. Do not install the drain hose as illustrated
below.
2. When connecting extension drain hose, insulate the connecting part of extension
drain hose with a shield pipe, do not let the drain hose slack.
Drainage
Fig.6
Do not block water flow by a rise. Do not put the end of
drain hose into water.
Pipe holder
Pipe Cover
(right)
Pipe Cover (left)
Right piping
Left piping
Right back piping
Left back piping
Upper Hook
Lower Hook
Cushioning
material

7
Installation Instruction
5. Piping and wrapping
Bundle the tubing, connecting cable, and
drain hose with tape securely,
evenly as shown in Fig.10.
Because the condensed water from rear
of the indoor unit is gathered in ponding
box and is piped out of room. Do not put
anything else in the box.
Indoor unit
Connective
pipe
Pipe room
Ponding box
Wrapping belt
Connective
cable
Drain hose
Fig.10
Connect the indoor unit first, then the outdoor unit.
Do not allow the piping to let out from the back of the indoor unit.
Be careful not to let the drain hose slack.
Heat insulated both of the auxiliary piping.
Be sure that the drain hose is located at the lowest side of the bundle. Locating
at the upper side can cause drain pan to overflow inside the unit.
Never intercross nor intertwist the power wire with any other wiring.
Run the drain hose sloped downward to drain out the condensed water smoothly.
CAUTION
Install the outdoor unit on a rigid base to prevent increasing noise level and vibration.
Determine the air outlet direction where the discharged air is not blocked.
In the case that the installation place is exposed to strong wind such as a seaside,
make sure the fan operating properly by putting the unit lengthwise along the wall
or using a dust or shield plates.
Specially in windy area, install the unit to prevent the admission of wind.
If need suspending installation, the installation bracket should accord with technique
requirement in the installation bracket diagram. The installation wall should be solid
brick, concrete or the same intensity construction,
or actions to reinforce, damping supporting should
be taken. The connection between bracket and
wall, bracket and the air conditioner should be
firm, stable and reliable.
Be sure there is no obstacle which block
radiating air.
OUTDOOR UNIT INSTALLATION
Outdoor installation precaution
Strong
wind
Fig.11

8
Installation Instruction
Settlement of outdoor unit
Anchor the outdoor unit with
a bolt and nut 10 or 8 tightly
and horizontally on a concrete
or rigid mount.
Fit the seal into the drain elbow, then insert
the drain joint into the base pan hole of
outdoor unit, rotate 90 to securely assemble
them. Connecting the drain joint with an
extension drain hose (Locally purchased),
in case of the water draining off the outdoor unit
during the heating mode.
Drain joint installation
Seal
Drain joint
Base pan hole of
outdoor unit
Seal
Drain pipe
Fig.13
REFRIGERANT PIPING CONNECTION
Oblique
90 C Roughness
Burr
Main cause for refrigerant leakage
is due to defect in the flaring work.
Carry out correct flaring work
using the following procedure:
A: Cut the pipes and the cable.
1. Use the piping kit accessory or pipes
purchased locally.
2. Measure the distance between the indoor and the outdoor unit.
3. Cut the pipes a little longer than the measured distance.
4. Cut the cable 1.5m longer than the pipe length.
1. Flaring work
Fig.14
A
B
Air inlet
Air outlet
Air inlet
Fig.12
B: Burr removal
1. Completely remove all burrs from the cut
cross section of pipe/tube.
2. Put the end of the copper tube/pipe in a
downward direction as you remove burrs in
order to avoid dropping burrs into the tubing.
Pipe
Reamer
Point down
Fig.15
Model A(mm) B(mm)
18000Btu/h
18000Btu/h
530 290
560 335

Bar
Copper pipe
Clamp handle Red arrow mark
Cone
Yoke
Handle
Bar
"A"
C: Putting nut on
Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal.(not possible
to put them on after flaring work)
Flare nut
Copper tube
Fig.16
Fig.17
D: Flaring work
Firmly hold copper pipe in a die in the
dimension shown in the table below.
CAUTION
Align the center of the pipes..
Sufficiently tighten the flare
nut with fingers, and then tighten
it with a spanner and torque wrench
as shown.
Tightening Connection
Excessive torque can break nut
depending on installation conditions.
Outer
diam. Tightening torque(N.cm) Additional tightening
torque(N.cm)
6.35 1570
(160kgf.cm) 1960 (200kgf.cm)
4900
(500kgf.cm)
5390
(550kgf.cm)
12.7
Outer diam.
(mm)
A(mm)
Max. Min.
6.35 1.3 0.7
9.53
1.6 1.0
12.7
1.8 1.0
9.53
2940
(300kgf.cm)
3430
(350kgf.cm)
Fig.19
Indoor unit tubing Flare nut Pipings
Fig.18
ELECTRICAL WORK
Electric safety regulations for the initial Installation
1. If there is serious safety problem about the power supply, the technicians should refuse
to install the air conditioner and explain to the client until the problem is solved.
2. Power voltage should be in the range of 90%~110%of rated voltage.
3. The creepage protector and main power switch with a 1.5 times capacity of Max. Current
of the unit should be installed in power circuit.
4. Ensure the air conditioner is grounded well.
7. An individual branch circuit and single receptacle used only for this air conditioner must be
available. See the following table for suggested wire sizes and fuse specifications:
5. According to the attached Electrical Connection Diagram located on the panel of the outdoor
unit to connect the wire.
6. All wiring must comply with local and national electrical codes and be installed
by qualified and skilled electricians.
9
Electrical work
12.7
1.8 1.0