MrCool Advantage Series User manual

The Advantage Series is NOT designed for amateur installation. Installation SHOULD be performed by an authorized technician.
Please read this manual carefully before installation and keep it for future reference.
Installation Manual
Advantage Series
Due to updates and constantly improving performance, the information and instructions within this
manual are subject to change without notice. Please visit www.mrcool.com/documentation to
ensure you have the latest version of this manual.
Version Date: 06-11-21

Contents
Indoor Unit Installation ...........10
1. Installation location.................................10
2. Attach mounting plate to wall...............11
3. Drill wall hole for connective piping.....11
4. Prepare refrigerant piping ....................13
5. Connect drain hose.................................14
6. Connect signal cable...............................16
7. Wrap piping and cables..........................17
8. Connect indoor power wire...................17
9. Mount indoor unit...................................17
Outdoor Unit Installation ...... 19
1. Installation location ..............................19
2. Install drain joint .................................. 20
3. Anchor outdoor unit ........................... 21
4. Connect signal and power cables .... 22
5
4
Safety Precautions .................................. 3
!
1Accessories ............................................... 5
Parts Overview ......................................... 9
3
2Installation Summary - Indoor Unit ...... 7
Page 1 mrcool.com

Refrigerant Piping Connection ...................... 24
A. Note on Pipe Length ............................................................. 24
B. Connection Instructions – Refrigerant Piping .................. 24
1. Cut pipe .............................................................................. 24
2. Remove burrs ................................................................... 25
3. Flare pipe ends ................................................................. 25
4. Connect pipes .................................................................... 26
Air Evacuation ....................... 28
1. Evacuation Instructions ..................... 28
2. Note on Adding Refrigerant.............. 29
6
7
Electrical and Gas Leak Checks ..... 30
8
Test Run ........................................... 31
9
10 EU Disposal Guidelines ................... 33
MC MC
Contents
Page 2mrcool.com

Page 3
Safety Precautions
mrcool.com
WARNING
DO NOT modify the length of the power supply cord or use an extension cord to power the unit. Only
use the specified power cord. If the power cord is damaged, it must be replaced by the manufacturer,
its service agent or similarly qualified person in order to avoid a hazard.
DO NOT share the electrical circuit with other appliances. Improper or insufficient power supply can
cause fire or electrical shock.
DO NOT let substances or gases other than the refrigerant enter the unit when connecting refrigerant
piping. The presence of other gases or substances will lower the unit’s capacity, and may cause
abnormally high pressure in the operation cycle. This may cause explosion and injury.
DO NOT allow children to play with the air conditioner. Children should be supervised around the unit
at all times.
DO NOT turn on power until all work/installation has been completed.
Installation must be performed by an authorized technician. Improper installation may cause water
leakage, electrical shock, or fire. The moving and relocation of the unit also requires consulting an
authorized technician for the disconnection and re-installation steps.
Installation must be performed according to installation instructions. Improper installation may cause
water leakage, electrical shock, or fire.
In North America, installation must be performed in accordance with the requirement of NEC and CEC
(by authorized personnel only.) Contact an authorized service technician for repair or maintenance of
the unit.
Only use the included accessories and specified parts for installation. Using non-standard parts can
cause water leakage, electrical shock, or fire and may cause the unit to fail.
Install the unit in a firm location that can support the unit’s weight. If the installation location cannot
support the weight, or the installation is performed improperly, the unit may fall and cause serious
injury and/or damage.
For all electrical work, follow all appropriate wiring standards, regulations, and the Installation Manual.
Read Before Installation
Incorrect installation may cause serious damage or injury.
The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.
WARNING
CAUTION
This symbol indicates ignoring instructions may cause death or serious injury.
This symbol indicates that ignoring instructions may cause moderate injury
to your person, damage to your unit, or other property.
This symbol indicates that you should never perform the indicated action.
1.
2.
3.
4.
5.
6.
!
Safety Precautions

Page 4
Safety Precautions
mrcool.com
Note about Fluorinated Gases:
7.
8.
9.
10.
11.
12.
1.
2.
1.
2.
3.
4.
5.
6.
You must use an independent circuit to supply power. DO NOT connect other appliances to the same
circuit. Insufficient electrical capacity or defects in electrical work can cause electrical shock or fire.
For all electrical work, fuse the specified cables. Connect cables tightly, and clamp them securely to
prevent external forces from damaging the terminal. Improper electrical connections may overheat,
causing fire and/or electrical shock.
All wiring must be properly arranged to ensure that the control board cover can close properly. If the
control board cover is not closed properly, it can lead to corrosion and cause the connection points
on the terminal to overheat , causing fire and/or electrical shock.
In certain functional environments, such as kitchens, server rooms, etc., the use of specially designed
air-conditioning units is highly recommended. If the supply cord is damaged, it must be replaced by
the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
This appliance is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge unless they have been given supervision
or instruction concerning use of the appliance by a person responsible for their safety. Children
should be supervised to ensure that they do not play with the appliance.
If connecting power to fixed wiring, the following must be incorporated within it, in accordance with
the wiring rules; an all-pole disconnection device (which has at least 1/8 in (3 mm) of clearances in all
poles), and have a leakage current that may exceed 10 mA, the residual current device (RCD) having a
rated residual operating current not exceeding 30 mA, and disconnection all must be present.
DO NOT install the unit within 3 feet (1 meter) of combustible materials if the unit has an auxiliary
electric heater.
DO NOT install the unit in a location that may be exposed to combustible gases. If combustible gas
accumulates around the unit, it may cause fire.
DO NOT operate your air conditioner in a wet room such as a bathroom or laundry room. Too much
exposure to water may cause electrical components to short circuit.
The product must be properly grounded during installation, or electrical shock may occur.
Install drainage piping according to the instructions in this manual. Improper drainage may cause water
damage to your home and property.
This air-conditioning unit contains fluorinated greenhouse gases.
For specific information on the type of gas and the amount, please refer to the relevant label on the unit
itself or the Owner’s Manual.
Installation, service, maintenance and repair of this unit must be performed by a certified technician.
Product removal/un-installation and recycling must be performed by a certified technician.
If the system has a leak-detection system installed, it should be checked for leaks at least every 12
months. Keeping a record of all leak checks for the lifetime of the unit is strongly recommended.
For equipment that contains fluorinated greenhouse gases in quantities of 5 tonnes of CO2equivalent
or more, but less than 50 tonnes of CO2 equivalent, if the system has a leak-detection system installed,
it must be checked for leaks at least every 24 months.

Page 5
Safety Precautions
mrcool.com
1
Accessories
1
(Sealant for Wall Sleeve)
1
1
1
1
1
Neoprene
Clip anchor
Mounting plate
screw ST3.9 X 25
Remote control
Fixing screw for
remote controller
holder ST2.9 x 10
Remote control
holder
Dry battery AAA.LR03
Air freshening filter
Seal
Drain joint
(for cooling &
heating models)
Mounting plate
5-8
(depending on model)
5-8
(depending on model)
2
1
Optional
Parts
2
PART LOOKS LIKE... QUANTITY
The air conditioning system includes the following accessories. Use all of the installation
parts and accessories to install the air conditioner. Improper installation may result in water leakage,
electrical shock, fire, or equipment failure.

Page 6mrcool.com
1
1
1
1
Accessories
1
(w/ Manual in
Controller Box)
Owner’s Manual
Installation Manual
Remote Control
Manual
Smart Controller Kit
Line Set
Gas / Liquid
Pipe Assembly
PART LOOKS LIKE... QUANTITY
Please read this manual carefully before installation and keep it for future reference.
Owner’s Manual
Advantage Series
For more details visit www.MrCool.com
Please read this manual carefully before installation and keep it for future reference.
Please read this manual carefully before installation and keep it for future reference.
Installation Manual
Advantage Series
For more details visit www.MrCool.com
Please read this manual carefully before installation and keep it for future reference.
Remote Control
User Manual
1 2 3
Pass the belt through
the hole of the Magnetic
ring to fix it on the cable
Magnetic Ring & Belt
(if supplied, please refer
to the wiring diagram to
install it on the
connective cable)
Varies by model

Page 7 mrcool.com
Select Installation Location
(Page 10)
Attach Mounting Plate
(Page 11)
Drill Wall Hole
(Page 11)
Determine Wall Hole Position
(Page 11)
1 2
3 4
Minimum Ceiling
Clearance is
5.9 in (15 cm)
> 4.75 in
(12 cm)
> 4.75 in
(12 cm)
For Ceilings GREATER
Than 9 Foot, Suggested
Floor Clearance is
90.55 in (230 cm)
For Ceilings LESS
Than 9 Foot, Suggested
Floor Clearance is
78.55 in (200 cm)
2
Installation Summary - Indoor Unit

Page 8mrcool.com
Installation Summary - Indoor Unit
Mount Indoor Unit
(Page 17)
Wrap Piping
(Page 17)
Connect Piping
(Page 24)
Connect Wiring
(Page 16)
Prepare Drain Hose
(Page 13)
567
8
9

Page 9 mrcool.com
NOTE ON ILLUSTRATIONS
Illustrations in this manual are for explanatory purposes. The actual shape of your unit may vary.
Remote Control
Remote Holder
Refrigerant Piping
Drainage Pipe
Front Panel
(with display)
Wall Mounting Plate
Outdoor Unit
Power Cable
Fresh Air Filter
(on front of main filter in Specified Units)
Air inlet (rear)
Air inlet (side)
Air outlet
Air outlet (bottom)
Indoor Unit
(Interior / Air Handler)
Outdoor Unit
(Exterior / Condenser)
Refrigerant Pipe Connection
and Stop Valve (under cover)
Air inlet (rear)
Vertical Airflow Louver
Horizontal Airflow Grill (inside)
Smart Controller
Module USB Port
3
Parts Overview

Page 10mrcool.com
Installation Summary - Indoor Unit
Installation Instructions
– Indoor Unit
PRIOR TO INSTALLATION:
Before installing the indoor unit, refer to the
label on the product box to make sure that
the model number of the indoor unit matches
the model number of the outdoor unit.
Step 1: Select installation location
Before installing the indoor unit, you must
choose an appropriate location. The following
are standards will help you choose an
appropriate location.
Proper installation locations meet the
following standards:
Good air circulation
Convenient drainage
Noise from the unit will not disturb
other people
Firm and solid—the location will not vibrate
Strong enough to support the weight of
the unit
A location at least one meter from all other
electrical devices (e.g., TV, radio, computer)
DO NOT install unit in the following locations:
Near any source of heat, steam, or
combustible gas
Near flammable items such as curtains
or clothing
Near any obstacle that might block air
circulation
Near a doorway
In a location subject to direct sunlight
NOTE ABOUT WALL HOLE:
If there is no fixed refrigerant piping:
While choosing a location, be aware that
you should leave ample room for a wall
hole (see Drill wall hole for connective
piping step) for the signal cable and
refrigerant piping that connect the indoor
and outdoor units. The default position for
all piping is the right side of the indoor unit
(while facing the unit). However, the unit
can accommodate piping to left or right.
4
Indoor Unit Installation

Page 11 mrcool.com
Indoor Unit Installation
Refer to the following diagram to ensure proper distance from walls and ceiling:
Step 2: Attach mounting plate to wall
The mounting plate is the device on which you will
mount the indoor unit
.
1. Remove the screw that attaches the mounting
plate to the back of the indoor unit.
2. Place the mounting plate against the wall in a
location that meets the standards in the
Select Installation Location step. (See
Mounting Plate Dimensions for detailed
information on mounting plate sizes.)
3. Drill holes for mounting screws in places that:
•have studs and can support the weight of
the unit
• correspond to screw holes in the mounting
plate
4. Secure the mounting plate to the wall with the
screws provided.
5. Make sure that mounting plate is flat against
the wall.
NOTE FOR CONCRETE OR BRICK WALLS:
If the wall is made of brick, concrete, or similar
material, drill 0.2 in diameter (5 mm diameter)
holes in the wall and insert the sleeve anchors
provided. Secure the mounting plate to the
wall by tightening the screws directly into the
clip anchors.
Step 3: Drill wall hole for connective piping
You must drill a hole in the wall for refrigerant piping,
the drainage pipe, and the signal cable that will
connect the indoor and outdoor units.
1. Determine the location of the wall hole based on
the position of the mounting plate. Refer to
Mounting Plate Dimensions on the next page
to help you determine the optimal position. Refer
to Fig. 4.3 wall hole diameter and install at a slight
angle to facilitate drainage.
2. Using a core drill [3.5 in (76.2 mm) for 24K & 36K
units, 2.5 in (65 mm) for all others], drill a hole in
the wall. Make sure that the hole is drilled at a
slight downward angle, so that the outdoor end of
the hole is lower than the indoor end by about 0.2
to 0.275 in (5 mm-7 mm). This will ensure proper
water drainage. (See Fig. 4.2)
3. Place the protective wall cuff in the hole. This
protects the edges of the hole and will help seal
it when you finish the installation process.
Fig. 4.1
CAUTION
When drilling the wall hole, be sure to avoid
wires, plumbing, and other sensitive
components.
Minimum Ceiling
Clearance is
5.9 in (15cm)
>4.75 in
(12 cm)
>4.75 in
(12 cm)
For Ceilings GREATER
Than 9 Foot, Suggested
Floor Clearance is
90.55 in (230 cm)
For Ceilings LESS
Than 9 Foot, Suggested
Floor Clearance is
78.55 in (200 cm)
NOTE: When the gas side connective pipe is
5/8 in (16 mm) or more, the wall hole should
be 3.54 in (90 mm).
Screw

Page 12mrcool.com
Indoor Unit Installation
Wall
Indoor Outdoor
Fig. 4.2
0.2 - 0.3 in
(5 - 7 mm)
MOUNTING PLATE DIMENSIONS
Different models have different mounting plates.
For the different customization requirements,
the shape of the mounting plate may be slightly
different. However, the installation dimensions
are the same for the same size of indoor unit.
See the illustrations for Type A and Type B below
for an example. In order to ensure that you have
ample room to mount the indoor unit, the
diagrams to the right show different types of
mounting plates along with the following
dimensions:
• Height & Width of mounting plate
• Height & Width of indoor unit relative to
plate
• Recommended position of wall hole (both
to the left and right of mounting plate)
• Relative distances between screw holes
Fig. 4.3
Correct orientation of Mounting Plate
4 in (101 mm)
7.05 in (179 mm)
5.35 in (136 mm)
1.45 in (37 mm)
11.4 in (290 mm)
1.95 in (49 mm)
Left rear wall
hole 2.5 in (65 mm) Right rear wall
hole 2.5 in (65 mm)
Indoor unit outline
28.45 in (722 mm)
1.95 in (49 mm)
7.55 in (192 mm)
9.15 in (232 mm)
16.8 in (426 mm)
5.05 in (128 mm)
1.7 in (43 mm)
11.7 in (297 mm)
Left rear wall
hole 2.5 in (65 mm) Right rear wall
hole 2.5 in (65 mm)
Indoor unit outline
31.6 in (802 mm)
1.7 in (43 mm)
1.7 in (43 mm)
5.65 in (144 mm)
2.3 in (58 mm)
12.55 in (319 mm)
2.25 in (57 mm)
1.55 in (40 mm)
Left rear wall
hole 2.5 in (65 mm)
Right rear wall
hole 2.5 in (65 mm)
38 in (965 mm)
5.45 in (138 mm)
1.35 in (34 mm)
Indoor unit outline
8.6 in (219 mm)
21.77 in (553 mm)
11.8 in (300 mm)
13.2 in (335 mm)
Left rear wall
hole 3.5 in (76.2 mm)
Right rear wall
hole 3.5 in (76.2 mm)
42.5 in (1080 mm)
2.1 in
(53.5 mm)
1.85in (47mm)
3 in (76 mm) 2.1 in (53.5 mm)
1.85 in (47 mm)
5.85 in
(148.7 mm)
5.95 in (151 mm)
6.85 in (174.3 mm)
Indoor unit outline
20.37 in (517.4 mm)
13.7 in (348.4 mm)
Series 12K Models
Series 9K Models
Series 18K Models
Series 24K Models
6.8 in (172 mm)
362mm (14.25in)
Left rear wall
hole 3.54 in (90 mm)
Right rear wall
hole 3.54 in (90 mm)
49.55 in (1259 mm)
Indoor unit outline
2.05 in (52 mm)
15.3 in (389 mm)
13.05 in (332 mm)
10.1 in (257 mm)
25.3 in (643.6 mm)
2.05 in (52 mm)
Series 36K Models
Type A Type B

Page 13 mrcool.com
Indoor Unit Installation
Be extremely careful not to dent or damage the piping while bending them away from the unit.
Any dents in the piping will affect the unit’s performance.
Step 4: Prepare refrigerant piping
The refrigerant piping is inside an insulating sleeve
attached to the back of the unit. You must prepare
the piping before passing it through the hole in the
wall. Refer to the Refrigerant Piping Connection
section of this manual for detailed instructions on
pipe flaring and flare torque requirements,
technique, etc.
Based on the position of the wall hole
relative to the mounting plate, choose the
side from which the piping will exit the unit.
If the wall hole is behind the unit, keep the
knock-out panel in place. If the wall hole is to the
side of the indoor unit, remove the plastic
knock-out panel from that side of the unit. (See
Fig. 4.4 ). This will create a slot through which
your piping can exit the unit. Use needle nose
pliers if the plastic panel is too difficult remove
by hand.
Use scissors to cut down the length of the insulating
sleeve to reveal about 6 in (15 cm) of the refrigerant
piping. This serves two purposes:
• To facilitate the Refrigerant Piping
Connection process
• To facilitate Gas Leak Checks and enable
you to check for dents
If existing connective piping is already embedded
in the wall, proceed directly to the Connect
Drain Hose step. If there is no embedded
piping, connect the indoor unit’s refrigerant
piping to the connective piping that will join the
indoor and outdoor units. Refer to the
Refrigerant Piping Connection section of this
manual for detailed instructions.
Based on the position of the wall hole relative to
the mounting plate, determine the necessary
angle of your piping.
Grip the refrigerant piping at the base of the
bend.
Slowly, with even pressure, bend the piping
towards the hole. DO NOT dent or damage the
piping during the process.
NOTE ON PIPING ANGLE
Refrigerant piping can exit the indoor unit
from four different angles:
• Left-hand side
• Left rear
• Right-hand side
• Right rear
Refer to Fig. 4.5 for details.
Knock-out Panel
Fig. 4.4
Fig. 4.5
1.
2.
3.
4.
5.
6.
7.

Page 14mrcool.com
Indoor Unit Installation
Step 5: Connect drain hose
By default, the drain hose is attached to the left-hand
side of unit (when you’re facing the back of the unit).
However, it can also be attached to the right-hand side.
NOTE ON DRAIN HOSE PLACEMENT
Make sure to arrange the drain hose according
to Fig. 4.6a.
DO NOT kink the drain hose.
DO NOT create a water trap.
DO NOT put the end of drain hose in water
or a container that will collect water.
ENSURE UNUSED DRAIN HOLE IS PLUGGED
To ensure proper drainage, the drain hose must exit
the unit on the same side as the refrigerant piping.
1.
Wrap the connection point firmly with Teflon tape
to ensure a good seal and to prevent leaks.
2.
For the portion of the drain hose that will remain
indoors, wrap it with foam pipe insulation to
prevent condensation.
3.
Remove the air filter and pour a small amount of
water into the drain pan to make sure that water
flows from the unit smoothly.
4.
To prevent unwanted
leaks be sure that
the factory installed
rubber plug is in the
unused drain hole.
Fig. 4.6a
Fig. 4.6b
Fig. 4.6c
Fig. 4.6d
Make sure there are NO
kinks or dents in the
hose to ensure proper
drainage.
NOT CORRECT
Dents in the drain hose
will create water traps.
NOT CORRECT
Kinks in the drain hose
will create water traps.
NOT CORRECT
DO NOT place the end
of the drain hose in
water or in containers
that collect water.
This will prevent
proper drainage.

Page 15 mrcool.com
Indoor Unit Installation
BEFORE PERFORMING ANY ELECTRICAL WORK, TURN OFF ALL POWER TO THE SYSTEM.
BEFORE PERFORMING ELECTRICAL WORK, READ THESE REGULATIONS
1. All wiring must comply with local and national electrical codes, and must be installed by a
licensed electrician.
2. All electrical connections must be made according to the Electrical Connection Diagram located
on the panels of the indoor and outdoor units.
3. If there is a serious safety issue with the power supply, stop work immediately. Explain your
reasoning to the client, and refuse to install the unit until the safety issue is properly resolved.
4. Power voltage should be within 90-110% of rated voltage. Insufficient power supply can cause a
malfunction, electrical shock, or fire.
5. Circuit, including any switches, should have a capacity 1.5 times the maximum unit
current (amps).
6. If connecting power to fixed wiring, the qualified technician must use an approved circuit
breaker or switch that disconnects all poles and has a contact separation of at least
1/8 in (3 mm). It must be incorporated into the fixed wiring.
7. Make sure to properly ground the air conditioner.
8. Every wire must be firmly connected. Loose wiring can cause the terminal to overheat,
resulting in malfunction and possible fire.
9. If the unit has an auxiliary electric heater, it must be installed at least 40 in (1 meter) away
from any combustible materials.
10. To avoid getting an electric shock, never touch the electrical components soon after the power
supply has been turned off. Always wait 10 minutes or more before touching the electrical
components once the power has been turned off.
11. If connecting power to fixed wiring, a surge protector and main power switch should be installed.
DO NOT connect another appliance to the same circuit. Only connect the unit to an individual
branch circuit outlet.
DO NOT let wires touch or rest against refrigerant tubing, the compressor, or any moving parts
within the unit.
Fig. 4.7a

Page 16mrcool.com
Indoor Unit Installation
Step 6: Connect signal cable
TAKE NOTE OF FUSE SPECIFICATIONS
The air conditioner’s circuit board (PCB) is
designed with a fuse to provide overcurrent
protection. The specifications of the fuse are
printed on the circuit board, such as:
T3.15A/250VAC, T5A/250VAC, etc.
CHOOSE THE APPROPRIATE CABLE SIZE
The size of the power supply cable, signal
cable, fuse, and switch needed is determined
by the maximum unit current. The maximum
unit current is indicated on the nameplate
located on the side panel of the unit. Refer
to this nameplate to choose the right cable,
fuse, or switch.
NOTE: In North America, please choose the
right cable size according to the Minimum
Circuit Ampacity indicated on the nameplate
of the unit.
1. Prepare the cable for connection:
2. Open front panel of the indoor unit.
3. Using a screwdriver, open the wire box cover
on the right side of the unit. This will reveal the
terminal block.
4. Unscrew the cable clamp below the terminal block
and place it to the side.
5. Facing the back of the unit, remove the plastic
panel on the bottom left-hand side.
All wiring must be performed in accordance
with the wiring diagram Fig. 4.7a shown on
the previous page.
Terminal block
Wire cover
Screw
Cable clamp
Fig. 4.7b
See Fig. 4.7A on previous page for wiring diagram.
Wiring diagram also found inside lid of interior unit
6. Feed the signal wire (protected by conduit) through
this slot, from the back of the unit to the front.
7. Facing the front of the unit, match the wire colors
with the labels on the terminal block, connect the
u-lug and firmly screw each wire to its
corresponding terminal.
DO NOT MIX UP LIVE AND NULL WIRES
This is dangerous, and can cause the air
conditioning unit to malfunction.
8. After checking to make sure every connection is
secure, use the cable clamp to fasten the signal
cable to the unit. Screw the cable clamp down
tightly.
9. Replace the wire cover on the front of the unit, and
the plastic panel on the back.
THE WIRING CONNECTION PROCESS MAY
DIFFER SLIGHTLY BETWEEN UNITS AND
REGIONS.
North America
Appliance
Amps(A)
AWG
15
15
20
25
24K
36K
Model
Series
Minimum Wire Gauge for Power Cables
MCA MOP
15
20
25
35
14
12
10
12

Page 17 mrcool.com
Indoor Unit Installation
SIGNAL CABLE PROTECTION
The signal cable must be protected by conduit
before being pushed through the wall hole.
2. Using vinyl tape, attach the drain hose to the
underside of the refrigerant pipes.
3. Using insulation tape, wrap the refrigerant pipes
and drain hose tightly together. Double-check
that all items are bundled in accordance with
Fig. 4.8.
DO NOT WRAP ENDS OF PIPING
When wrapping the bundle, keep the ends of
the piping unwrapped. You need to access them
to test for leaks at the end of the installation
process (refer to Electrical Checks and Leak
Checks section of this manual).
Step 8: Mount indoor unit
Step 7: Wrap piping
Before passing the piping and drain hose through
the wall hole, you must bundle them together to
protect them, insulate them, and save space.
1. Bundle the drain hose and refrigerant pipes
according to Fig. 4.8.
DRAIN HOSE MUST BE ON BOTTOM
Make sure that the drain hose is at the bottom
of the bundle. Putting the drain hose at the top of
the bundle can cause the drain pan to overflow,
which may lead to fire or water damage.
Indoor Unit
Space behind unit
Refrigerant piping
Drain hose
Insulation tape
Fig. 4.8
If you installed new connective piping to the
outdoor unit, do the following:
If you have already passed the refrigerant piping
through the hole in the wall, proceed to Step 4.
Otherwise, double-check that the ends of the
refrigerant pipes are sealed to prevent dirt or
foreign material from entering the pipes.
Slowly pass the wrapped bundle of refrigerant
pipes and drain hose through the hole in the wall.
Hook the top of the indoor unit on the upper
hook of the mounting plate.
Check that unit is hooked firmly on mounting
plate by applying slight pressure to the left and
right-hand sides of the unit. The unit should not
jiggle or shift.
Using even pressure, push down on the bottom
half of the unit. Keep pushing down until the unit
snaps onto the hooks along the bottom of the
mounting plate.
Again, check that the unit is firmly mounted by
applying slight pressure to the left and the
right-hand sides of the unit.
1.
2.
3.
4.
5.
6.
7.

Page 18mrcool.com
Indoor Unit Installation
If refrigerant piping is already embedded
in the wall, do the following:
1. Hook the top of the indoor unit on the upper
hook of the mounting plate.
2. Use a bracket or wedge to prop up the unit,
giving you enough room to connect the
refrigerant piping, signal cable, and drain
hose. Refer to Fig. 4.9 for an example.
Fig. 4.9
UNIT IS ADJUSTABLE
Keep in mind that the hooks on the mounting plate are smaller than the holes on the back of the unit.
If you find that you do not have ample room to connect embedded pipes to the indoor unit, the unit can
be adjusted left or right by about 1.25 in -1.95 in (30 mm - 50 mm), depending on the model.
(See Fig. 4.10)
Fig. 4.10
Move to left or right
1.2 in - 1.95 in
(30 mm - 50 mm)
3. Connect drain hose and refrigerant piping
(refer to Refrigerant Piping Connection
section of this manual for instructions).
4. Keep piping connections exposed to perform
the leak test (refer to Electrical Checks and
Leak Checks section of this manual).
5. After the leak test, wrap the piping connection
points with insulation tape.
6. Remove wedge bracket or wedge that is
propping up the unit.
7. Using even pressure, push down on the
bottom half of the unit. Keep pushing down until
the unit snaps onto the hooks along the bottom
of the mounting plate
Wedge
30°
1.2 in - 1.95 in
(30 mm - 50 mm)

Page 19 mrcool.com
Indoor Unit Installation
Installation Instructions –
Outdoor Unit
Step 1: Select installation location
Before installing the outdoor unit, you must
choose an appropriate location. The following
standards will help you choose an appropriate
location.
Proper installation locations meet the
following standards:
Meets all spatial requirements shown in
Installation Space Requirements (Fig. 5.1).
Good air circulation and ventilation.
Firm and solid location that can support
the unit and will cause vibration.
Noise from the unit will not disturb others.
Protected from prolonged periods of direct
sunlight or rain.
Where snowfall is anticipated, raise the unit
above the base pad to prevent ice buildup
coil damage. Mount the unit high enough to
be above the average accumulated area
snowfall. The minimum height must be 18
inches.
DO NOT install unit in the following locations:
Near an obstacle that will block air inlets and
outlets
Near a public street, crowded areas, or
where noise from the unit will disturb others
Near animals or plants that will be harmed
by hot air discharge
Near any source of combustible gas or in a
location that is exposed to large amounts of
dust
In a location exposed to a excessive
amounts of salty air
Fig. 5.1
Ground Installed:
12 in (30 cm)
Bracket Installed:
6 in (15 cm)
clearance between
back and wall
79in (200cm)
in front
12in (30cm)
on left
24in (60cm)
above
24in (60cm)
on right
79 in (200 cm)
in front
12 in (30 cm)
on left side
24 in (60 cm)
above
24 in (60 cm)
on right side
5
Outdoor Unit Installation