Ecoair MOX330-18HFN1-MR0 User manual

AIR CONDITIONERS
Installation Manual
IMPORTANT NOTE:
Read this manual carefully before installing
or operating your new air conditioning
unit. Make sure to save this manual for
future reference.

ACCESSORIES.......................................................... .................................08
Table of Contents
Safety Precautions .............................................................................04
OUTDOOR UNIT INSTALLATION......................... ....................................09
WIRING.............................................................. .......................................15
AIR EVACUATION............................................... ......................................26
TEST RUN................................................................ ..................................28

store gasoline or ammable substances near air conditioner. Emitted gas may
collect around the unit and cause explosion.
If the air conditioner is used together with burners or other heating devices, thoroughly ventilate
the room to avoid oxygen deficiency.

ELECTRICAL WARNINGS
•
•
•
•
Do not share the electrical circuit with other appliances. This equipment requires a dedicated
electrical circuit.
For all electrical work, follow all local and national wiring standards, regulations, and the
Installation Manual. Connect cables tightly, and clamp them securely to prevent external forces
from damaging the terminal. Improper electrical connections can overheat and cause re, and may
also cause shock.
All electrical connections must be made according to the Electrical Connection
Diagram located on the panels of the indoor and outdoor units.
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 heat up, catch re, or cause electrical shock.
The product must be properly grounded at the time of installation, or electrical shock may occur.
TAKE NOTE OF FUSE SPECIFICATIONS
The air conditioner’s circuit board (PCB) is designed with a fuse to provide overcurrent protection.
This fuse must be replaces with identical component.
The specifications of the fuse are printed on the circuit board ,examples of such are T5A/250VAC
and T10A/250VAC.
CAUTION
• Turn o the air conditioner and disconnect the power if you are not going to use it for a long time.
• Make sure that water condensation can drain unhindered from the unit.
• Do not operate the air conditioner with wet hands. This may cause electric shock.
• Do not use device for any other purpose than its intended use.
• Do not climb onto or place objects on top of the outdoor unit.
•
As with any mechanical equipment, contact with sharp sheet metal edges can result in personal
injury. Take care while handling this equipment and wear gloves and protective clothing.

WARNINGS FOR PRODUCT INSTALLATION
1. Installation must be performed by an authorized dealer or specialist. Defective installation can
Excessive Weight Hazard - Use two or more people when moving and installing the unit. Failure
to do so can result in back or other type of injury.
cause water leakage, electrical shock, or re.
2. Installation must be performed according to the installation instructions. Improper installation
can cause water leakage, electrical shock, or re.
(In North America,installation must be performed in accordance with the requirement of NEC
and CEC by authorized personnel only.)
3.
Contact an authorized service technician for repair or maintenance of this unit. This appliance
shall be installed in accordance with national wiring regulations.
4.
Only use the included accessories, parts, and specied parts for installation. Using non-standard
parts can cause water leakage, electrical shock, re, and can cause the unit to fail.
5.
6.
Install the unit in a rm location that can support the unit’s weight. If the chosen location cannot
support the unit’s weight, or the installation is not done properly, the unit may fall and cause
serious injury and damage.
7.
8.
9.
10.
11.
Do not turn on the power until all work has been completed.
When moving or relocating the air conditioner, consult experienced service technicians for
disconnection and reinstallation of the unit.
Unit must be properly supported and secured to prevent tipping of unit.
Do not install the unit in a location that may be exposed to combustible gas leaks. If combustible
gas accumulates around the unit, it may cause re.
Install drainage piping according to the instructions in this manual. Improper drainage may
cause water damage to your home and property.

Note about Fluorinated Gasses(Not applicable to the unit using R290 Refrigerant)
1.
This air-conditioning unit contains fluorinated greenhouse gasses. For specic information on the
type of gas and the amount, please refer to the relevant label on the unit itself or
the
“Owner's Manual - Product Fiche ”in the packaging of the outdoor unit. (European Union
products only)
.
2. Installation, service, maintenance and repair of this unit must be performed by a certified
technician.
3. Product uninstallation and recycling must be performed by a certified technician.
4.
When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.

Accessories (Packed with the outdoor unit)
2
Flare-to-braze adapter(some models)
Name Shape Quantity
1
1
Drain tting
Gasket
Accessories
The air conditioning system comes with 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 and re, or equipment failure.
Transfer connector (some models)
1

The Maximum Length And Drop
Height Based on Models. (Unit: m/ft.)
Type of model Capacity
(Btu/h) Length of
piping Maximum drop height
North America,
Australia and the
eu frequency
conversion Split
Type
<15K 25/82 10/32.8
≥15K - <24K 30/98.4 20/65.6
≥24K - <36K 50/164 25/82
≥36K - ≤60K 65/213 30/98.4
Safety Precautions
WARNING
• All eld piping must be completed by a
licensed technician and must comply with
the local and national regulations.
• When the air conditioner is installed in a
small room, measures must be taken to
prevent the refrigerant concentration in
the room from exceeding the safety limit
in the event of refrigerant leakage. If the
refrigerant leaks and its concentration
exceeds its proper limit, hazards due to
lack of oxygen may result.
• When installing the refrigeration system,
ensure that air, dust, moisture or foreign
substances do not enter the refrigerant
circuit. Contamination in the system may
cause poor operating capacity, high pressure
in the refrigeration cycle, explosion or injury.
• Ventilate the area immediately if there is
refrigerant leakage during the installation.
Leaked refrigerant gas is both toxic and
ammable. Ensure there is no refrigerant
leakage after completing the installation
work.
Notes On Pipe Length and Elevation
Ensure that the length of the refrigerant pipe, the
number of bends, and the drop height between
the indoor and outdoor units meets the
requirements shown in the following table:
Oil traps
CAUTION
If oil flows back into the outdoor unit’s compressor,
this might cause liquid compression or deterioration
of oil return. Oil traps in the rising gas piping can
prevent this.
An oil trap should be installed every 6m(20ft) of
vertical suction line riser (＜36000Btu/h unit).
An oil trap should be installed every 10m(32.8ft)
of vertical suction line riser (≥36000Btu/h unit).
Outdoor Unit Installation

3/8are 3/8braze
7/8are 7/8braze
3/8are 3/8braze
Air Handler Unit
Model
Air Handler Unit
Connection(in.are)
Adapter Required at
Air Handler Unit
(in.are to braze)
Outdoor
Model
Outdoor Unit
Connection
(in. are)
Adapter Required
at Outdoor Unit
(in. are to are or braze)
18K/24K
24K/30K/36K/48K
60K
Liquid
Gas
Liquid
Gas
Liquid
Gas
3/8are 3/8braze
3/4are 3/4braze
3/8are 3/8braze
3/4are 3/4braze
3/8are 3/8braze
7/8are 7/8braze
3/8
3/4
3/8
3/4
3/8
7/8
18K/24K
60K
24K(Hyper
Heat)/30K/
36K/48K
Liquid
Gas
Liquid
Gas
Liquid
Gas
3/8
5/8
3/8
3/4
3/8
7/8
5/8are 3/4are
3/8are 3/8braze
3/4are 3/4braze
5/8are 3/4braze
Name
Shape Quantity(PC)
The correct connecting pipes
are included with the
equipment.
Connecting pipe
assembly
Liquid side
Gas side
Φ6.35(1/4in)
Φ9.52(3/8in)
Φ16(5/8in)
Φ12.7(1/2in)
Φ19(3/4in)
Φ22(7/8in)

Connection Instructions –
Refrigerant Piping
Step 1: Cut pipes
When preparing refrigerant pipes, take extra care
to cut and flare them properly. This will ensure
efficient operation and minimize the need for future
maintenance.
1. Measure the distance between the indoor and
outdoor units.
2. Using a pipe cutter, cut the pipe a little longer
than the measured distance.
3. Make sure that the pipe is cut at a perfect 90°
angle.
Oblique Rough Warped
90°
DO NOT DEFORM PIPE
WHILE CUTTING
Be extra careful not to damage, dent, or
deform the pipe while cutting. This will
drastically reduce the heating eciency
of the unit.
CAUTION
• Insulate both the gas and liquid piping to
prevent water leakage.
Step 3: Flare pipe ends
Proper aring is essential to achieve an airtight seal.
1. After removing burrs from cut pipe, seal the ends
with PVC tape to prevent foreign materials from
entering the pipe.
2. Sheath the pipe with insulating material.
3. Place are nuts on both ends of pipe. Make sure
they are facing in the right direction, because you
can’t put them on or change their direction after
flaring.
Flare nut
Copper pipe
4. Remove PVC tape from ends of pipe when ready
to perform aring work.
2.
Using a reamer or deburring tool, remove all burrs
from the cut section of the pipe.
Pipe
Reamer
Point down
Step 2: Remove burrs.
Burrs can aect the air-tight seal of refrigerant piping
connection. They must be completely removed.
1.
Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.

32-39 N.m
49-59 N.m
57-71 N.m
67-101 N.m
85-110 N.m
(180-200kgf.cm)
(320-390kgf.cm)
(490-590kgf.cm)
(570-710kgf.cm)
(670-1010kgf.cm)
(850-1100kgf.cm)
5. Clamp are form on the end of the pipe.
The end of the pipe must extend beyond the are
form.
Flare form
Pipe
6. Place aring tool onto the form.
7. Turn the handle of the aring tool clockwise
until the pipe is fully ared. Flare the pipe in
accordance with the dimensions.
PIPING EXTENSION BEYOND FLARE FORM
Connect the copper pipes to the indoor unit rst,
then connect it to the outdoor unit. You should
rst connect the low-pressure pipe, then the high-
pressure pipe.
1.
When connecting the are nuts, apply a thin
coat of refrigeration oil to the ared ends of
the pipes.
2. Align the center of the two pipes that youwill
connect.
3.
Tighten the are nut as tightly as possible by
hand.
4.
Using a spanner, grip the nut on the unit tubing.
5. While rmly gripping the nut, use a torque
wrench to tighten the are nut according to
the torque values in above table.
8. Remove the aring tool and are form, then
inspect the end of the pipe for cracks and even
aring.
Step 4: Connect pipes
6. After connecting the copper pipes to the indoor
unit, wrap the power cable, signal cable and the
piping together with binding tape.
NOTE: DO NOT intertwine signal cable
with other wires. While bundling these
items together, do not intertwine or cross
the signal cable with any other wiring.
NOTE: Use both a spanner and a torque wrench
when connecting or disconnecting pipes to/from
the unit.
CAUTION
• Ensure to wrap insulation around the piping.
Direct contact with the bare piping may
result in burns or frostbite.
•
Make sure the pipe is properly connected.
Over tightening may damage the bell mouth
and under tightening may lead to leakage.
NOTE ON MINIMUM BEND RADIUS
Carefully bend the tubing in the middle
according to the diagram below. DO NOT
bend the tubing more than 90° or more than
3 times.
Use care when bending pipe, do net
kink pipe.
Bend the pipewith thumb
min-radius 10cm (3.9”)

evoba)ni42(mc06
60cm (24in)
on right
30cm (12in)
on left
200cm (79in)
in front
30cm (12in)
Installation Instructions – Outdoor unit
Step 1: Select installation location
Before installing the outdoor unit, you must
choose an appropriate location. The following are
standards that will help you choose an appropriate
location for the unit.
Proper installation locations meet the
following standards:
 Meets all spatial requirements shown in Installation
Space Requirements above.
 Good air circulation and ventilation
 Firm and solid—the location can support the unit
and will not vibrate
 Noise from the unit will not disturb others
Install the unit by following local switchs and
regulations , there may be dier slightly between
dierent regions.
SPECIAL CONSIDERATIONS FOR EXTREME
WEATHER
If the unit is exposed to heavy wind:
Install unit so that air outlet fan is at a 90°
angle to the direction of the wind. If needed,
build a barrier in front of the unit to protect it
from extremely heavy winds.
See Figures below.
Strong
wind
Strong wind
Strong wind
If the unit is frequently exposed to heavy
rain or snow:
Build a shelter above the unit to protect it
from the rain or snow. Be careful not to
obstruct air flow around the unit.
Wind Baffle
Where snowfall is anticipated, take appropriate
measures to prevent ice buildup and coil
damage.
Outdoor Unit Installation
DO NOT
installunit 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
In a location that is exposed to large amounts of
dust

Step 2: Install drain fitting (Heat pump
unit only)
Seal
Drain joint
(A) (B)
Base pan hole of
outdoor unit
Seal
IN COLD CLIMATES
In cold climates, make sure that the drain
hose is as vertical as possible to ensure
swift water drainage. If water drains too
slowly, it can freeze in the hose and ood
the unit.
Step 3: Anchor outdoor unit
Split Type Outdoor Unit
Outdoor Unit Types and Specifications
W
H
W
H
A
B
D
The outdoor unit can be anchored to the
ground or to a wall-mounted bracket with
bolt(M10). Prepare the installation base of
the unit according to the dimensions below.
UNIT MOUNTING DIMENSIONS
The following is a list of dierent outdoor
unit sizes and the distance between their
mounting feet. Prepare the installation
base of the unit according to the dimensions
below.
Before bolting the outdoor unit in place, you must
install the drain tting at the bottom of the unit.
NOTE: There are two dierent types of drain
joints depending on the type of outdoor unit.
If the drain fitting comes with a rubber seal
(see Fig. A), do the following:
1. Fit the rubber seal on the end of the drain tting
that will connect to the outdoor unit.
2. Insert the drain fitting into the hole in the base
pan of the unit.
3. Rotate the drain tting 90° until it clicks in place
facing the front of the unit.
4. Connect a drain hose extension (not included)
to the drain tting to redirect water from the
unit during heating mode.
If the drain fitting doesn’t come with a rubber
seal (see Fig. B ), do the following:
1. Insert the drain tting into the hole in the base
pan of the unit. The drain tting will click in
place.
2. Connect a drain hose extension (not included)
to the drain tting to redirect water from the
unit during heating mode.

L
H
300 cm / 118” or more
A
60 cm / 23.6”
or more
150 cm / 59”
or more
25 cm / 9.8”
or more
25 cm / 9.8”
or more
Rows of series installation
L ≤H L ≤1/2H
L A
25 cm / 9-13/16in or more
1/2H < L ≤H 30 cm / 11-13/16in or more
L >H Can not be installed
The relations between H, A and L are as follows.
If you will install the unit on the ground
or on a concrete mounting platform,
do the following:
1. Mark the positions for four expansion bolts
based on dimensions chart.
2. Pre-drill holes for expansion bolts.
3. Place a nut on the end of each expansion bolt.
4. Hammer expansion bolts into the pre-drilled
holes.
5. Remove the nuts from expansion bolts, and
place outdoor unit on bolts.
6. Put washer on each expansion bolt, then
replace the nuts.
7. Using a wrench, tighten each nut until snug.
WARNING
WHEN DRILLING INTO CONCRETE, EYE
PROTECTION IS RECOMMENDED AT
ALL TIMES.
If you will install the unit on a wall-mounted
bracket , do the following:
(unit: mm/inch)
Outdoor Unit Dimensions
W
mm inch mm inch mm inch mm inch mm inch
H D Mounting Dimensions A B
805 31731-11/16 554 21-13/16 330 13 511 20-1/8 12-1/2
946 40337-1/4 810 31-29/32 410 16-5/32 673 26-1/2 15-7/8
952 40437-1/2 1333 52-1/2 415 16-11/32 634 24-35/36 15-29/32
890 35 673 26-1/2 342 13-15/32 663 26-1/8 354 13-15/16
1. Mark the position of bracket holes based on
dimensions chart.
2. Pre-drill the holes for the expansion bolts.
3. Place a washer and nut on the end of each
expansion bolt.
4. Thread expansion bolts through holes in
mounting brackets, put mounting brackets
in position, and hammer expansion bolts into
the wall.
5. Check that the mounting brackets are level.
6. Carefully lift unit and place its mounting feet
on brackets.
7. Bolt the unit rmly to the brackets.
8. If allowed, install the unit with rubber isolator
pads o reduce vibrations and noise.
CAUTION
Make sure that the wall is made of solid brick,
concrete, or of similarly strong material.
Thewall must be able to support at
least four times the weight of the unit.

BEFORE PERFORMING ANY
ELECTRICAL WORK, READ THESE
WARNINGS
1. All wiring must comply with local and national
electrical codes, regulations 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. Insucient power supply can cause
malfunction, electrical shock, or re.
5. Power must be connected to xed wiring, a
surge protector and main power switch
should be installed.
6. If connecting power to xed wiring, a service
disconnect that disconnects all poles and
has a contact separation of at least 1/8in (3mm)
must be incorporated in the xed wiring. The
qualied technician must use an approved
circuit breaker or switch.
7. Only connect the unit to an individual branch
circuit outlet. Do not connect another
appliance to that circuit.
8.
Make sure to properly ground the air conditioner.
9. Every wire must be rmly connected. Loose
wiring can cause the terminal to overheat,
resulting in product malfunction and possible re.
Do not let wires touch or rest against refrigerant
tubing, the compressor, or any moving parts
within the unit.
To avoid getting an electric shock, never touch
the electrical components soon after the power
supply has been turned o. After turning o
the power, always wait 10 minutes or more
before you touch the electrical components.
10.
11.
13. Make sure that you do not cross your
electrical wiring with your signal wiring.
This may cause distortion and interference.
14. Connect the outdoor wires before connecting
the indoor wires.
Wiring
WARNING
BEFORE PERFORMING ANY
ELECTRICAL OR WIRING WORK,
TURN OFF THE MAIN POWER TO
THE SYSTEM.

In North America, choose the cable
type according to the local electrical switchs
and regulations.
In North America, please choose the
right cable size according to the Minimum
Circuit Ampacity indicated on the
nameplateof the unit.
When connecting the wires, strictly follow
the wiring diagram found inside the
electrical box cover.
Before performing any electrical or wiring
work, turn o the main power to the
system.
1. Prepare the cable for connection
a. You must rst choose the right cable
size.
3. Connect the u-lugs to the terminals
Match the wire colors/labels with the labels
on the terminal block. Firmly screw the u-lug
of each wire to its corresponding terminal.
2. Remove the electric cover of the outdoor unit.
Cover
Screw
Outdoor Unit A Outdoor Unit B
L2
L1
OPTIONAL
L1
TO POWER SOURCE TO POWER SOURCE
L2
The diagrams are for explanation purpose only. Your machine may be slightly dierent.
The actual shape shall prevail.
Using a wire crimper, crimp u-lugs on the
ends.
b. Using wire strippers, strip the
jacket from both ends of the signal cable
to reveal approximately 15cm (5.9”) of
wire.
c. Strip the insulation from the ends.
d.
Outdoor Unit Wiring

4. Clamp down the cable with the cable clamp.
5. Insulate unused wires with electrical tape.
Keep them away from any electrical or metal
parts.
6. Reinstall the cover of the electric control box.
WARNING
RISK OF ELECTRIC SHOCK CAN CAUSE
INJURY OR DEATH. DISCONNECT ALL
REMOTE ELECTRIC POWER SUPPLIES
BEFORE SERVICING.
1. Remove the wire cover from the unit by
loosening the 3 screws.
2. Dismount caps on the conduit panel.
3. Temperarily mount the conduit tubes(not
included) on the conduit panel.
4. Properly connect both the power supply and
low voltage lines to the corresponding
terminals on the terminal block.
5. Ground the unit in accordance with local
codes.
6. Be sure to size each wire allowing several
inches longer than the required length for
wiring.
7. Use lock nuts to secure the conduit tubes.
In North America
G
Wire Cover
Over 1.57in.(40mm)
Terminal block
Conduit panel
Connecting cable
Power supply cord
Please select the appropriate through-hole according
to the diameter of the wire.
Outdoor Unit A Outdoor Unit B
ISOLATE THE POWER SUPPLY LEADS AND
COMMUNICATION LEADS BY THE STRAIN
RELIF AND KEEP POWER SUPPLY LEADS
AWAY FROM COMMUNICATION LEADS.
WARNING

Please refer to the wiring nameplate for the
wiring method. Do not connect 24V AC to
S1 - S2, as this will damage the system.
This is the preferred method of control with
the communicating control, Midea indoor and
outdoor unit. Refer to the wiring method of
internal and external machine communication
and wired controller as follows:
Connection method A:
To use a 24V thermostat, you need to refer to the
following wiring:
Connection method B:
When using a 24V thermostat, please refer to the
non-communicating wiring diagrams that follow:
NOTICE
This equipment uses B functionality. This terminal
is energized for heating functionality.
Please ensure that thermostat conguration is set
up for B functionality.
Note: These methods are for use with a Midea
outdoor unit and a third party indoor unit
or cased coil and gas furnace.
S1-2 dip
switch to
be “ON”
24V connection DIP Switch setting as shown
in the picture:
Connection method C:
NOTICE
The use of shielded communication or
thermostat wire is not required, but
is recommended where separation from high
voltage conductors can not be maintained, or
in areas with high electrical noise.
The shield and drain conductor must be
grounded at the outdoor unit and stripped
back and taped at the indoor unit. Grounding
at both ends results in an increase of
noise transmitted onto the signal wires.
ON
1 2 3 4
Outdoor Unit
Only Mode
CN6
TO 24V THERMOSTAT
S1
R C Y1 Y2 L
S2 B W D
S1
24V communication
24V must never be connected to S1 – S2. All wiring must be in
compliance with the above scenarios. Incorrect wiring will
cause irreversible damage to control.

Non-communication scheme wiring reference
• Wiring for 4H and 2C thermostat
R L G B W E
CY1
DH W1 W2 R B W D L
CY1 Y2
INDOOR UNIT OUTDOOR UNIT
DH
O/B
W2
Y2
Y1
G
L
C
R
W1/E
THERMOSTAT
S4-2 DIP switch o
Perform disconnection and
short-circuit to achieve
partition, control or dehumidication
S4-1 DIP switch o
Disconnect and short
circuit to realize heating segment
The following wiring diagram are suitable for the
AHU and ODU with 24V thermostat.
• Wiring for 3H and 1C thermostat
S4-2 DIP switch o
Perform disconnection and
short-circuit to achieve
partition, control or dehumidication
S4-1 DIP switch o
Disconnect and short
circuit to realize heating segment
R L G B W E
CY1
DH W1 W2 R B W D L
CY1 Y2
INDOOR UNIT OUTDOOR UNIT
DH
O/B
W2
Y
G
L
C
R
W1/E
THERMOSTAT
• Wiring for 3H and 2C thermostat
Emergency heating control two groups
of electric heating at the same time
R L G B W E
CY1
DH W1 W2 R B W D L
CY1 Y2
INDOOR UNIT
DH
O/B
Y2
Y1
G
L
C
R
E
THERMOSTAT
OUTDOOR UNIT
S4-1 DIP switch o
Disconnect and short
circuit to realize heating segment