Lennox MPA012S4S-*L, MWMB009S4-*L, MWMA009S4-*L, MPB009S4S-*L, MWMA012S4-*L Installation Instructions Manual

INSTALLATION

©

2017 Lennox Industries Inc.

Dallas, Texas, USA

Table of Contents

General ...........................................................................1

Included Parts.................................................................2

Model Number Identication ...........................................3

Indoor / Outdoor Unit Match-Ups....................................4

Typical System Components ..........................................5

System Dimensions ........................................................6

Outdoor Units ..............................................................6

Indoor Units .................................................................7

System Clearances ........................................................8

Outdoor Unit ................................................................8

Indoor Unit ...................................................................8

Torque Requirements for Caps and Fasteners...............9

Indoor Unit Installation ....................................................9

Unit Placement Considerations ...................................9

Determining Wall Mounting Plate Location ..................9

Installation of Wall Mounting Plate...............................9

Installation of Wall Sleeve..........................................10

Installation of Indoor Unit on Wall Mounting Plate .....10

Indoor Unit Condensate Piping Connections .............12

Outdoor Unit Installation ...............................................12

Placement Considerations .........................................12

Direct Sunlight, Rain, Snow and Ice Protection .........13

Prevailing Winds ........................................................14

Buried Refrigerant Pipe Protection ............................14

Outdoor Unit Condensate Piping ...............................14

Securing the Outdoor Unit .........................................15

Refrigerant Piping Connections ....................................15

Leak Test and Evacuation ............................................18

Leak Test ...................................................................18

Triple Evacuation Procedure......................................18

Wiring Connections ......................................................18

Outdoor Unit .............................................................18

Indoor Unit .................................................................18

Unit Start-Up .................................................................26

Adding Refrigerant for Longer Line Set ........................26

Troubleshooting ............................................................26

Test Run .......................................................................26

Pre-Checks ................................................................26

Procedure ..................................................................26

Double-Check Pipe Connections ...............................27

If Ambient Temperature is below 63°F (17°C) ...........27

Dry Mode Operation (Dehumidication) .......................27

Procedure ..................................................................27

Sequence of Operation ..............................................27

INSTRUCTIONS

MLA/MPA/MPB and

MWMA/MWMB Series

SINGLE-ZONE MINI-SPLIT SYSTEMS
(115V and 208/230V) --
Wall-Mounted Indoor Unit
507545-06
4/2017
Supersedes 10/2016

THIS MANUAL MUST BE LEFT WITH THE OWNER

FOR FUTURE REFERENCE

WARNING

Improper installation, adjustment, alteration, ser vice or
maintenance can cause property damage, personal
injury or loss of life.

Installation and service must be performed by a li censed
professional HVAC installer (or equivalent) or a service
agency.

WARNING

The clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HCFCs, and HFCs) as of July, 1992.
Approved methods of recovery, recycling or reclaiming
must be followed. Fines and/or incarceration may be
levied for non-compliance.

WARNING

This product contains a chemical known to the State
of California to cause cancer, birth defects, or other
reproductive harm.

CAUTION

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.

General

These instructions are intended as a general guide and
do not supersede local or national codes in any way.
Authorities having jurisdiction should be consulted before
installation.

The MWMA and MWMB wall-mounted indoor units are
matched with an outdoor heat pump unit to create a mini­split system that uses HFC-410A refrigerant.

Included Parts

Package 1 of 1 contains the following:

1 - Assembled Indoor Unit
The assembled indoor unit will include the following items:

Parts Figure Quantity Parts Figure Quantity

M0STAT60Q-1
Wireless controller

Wireless control
holder with 2 mounting
screws

Batteries (AAA) 2

1

1 Mounting plate 1

Installation and owner’s

manual

Mounting plate securing

screws

Plastic screw anchors 5

1 - Assembled Outdoor Unit and the following items:

Parts Figure Quantity Parts Figure Quantity

1 ea.

5

Drain connector 1 Seal ring 1

2

Model Number Identication

OUTDOOR SINGLE ZONE HEAT PUMP UNITS

M P A 009 S 4 S - 1 P

Series Type

M = Mini-Split

Unit Type

L = Low Ambient Heat Pump

P = Heat Pump

Major Design Sequence

A = 1st Generation

B = 2nd Generation

Nominal Cooling Capacity

009 = 0.75 tons

012 = 1 tons

018 = 1.5 tons

024 = 2 tons

030 = 2.5 tons

WALL-MOUNTED INDOOR UNITS

Series Type

M = Mini-Split

Unit Type

WM = Wall-Mounted Non-Ducted Unit

Major Design Sequence

A = 1st Generation

B = 2nd Generation

Voltage

L = 115V-1 phase-60hz
P = 208/230V-1 phase-60hz

Minor Design Sequence

1 = 1st Revision

Refrigerant Circuits

S = Single Circuit

Refrigerant Type

4 = HFC-410A

Cooling Efciency

S = Standard Efciency

M WM A 012 S 4 - 1 P

Voltage

L = 115V-1 phase-60hz
P = 208/230V-1 phase-60hz

Minor Design Sequence

1 = 1st Revision
2 = 2nd Revision

Refrigerant Type

4 = HFC-410A

Nominal Cooling Capacity

009 = .75 tons

018 = 1.5 tons

030 = 2.5 tons

Cooling Efciency

S = Standard Efciency

012 = 1 tons

024 = 2 tons

3

Indoor / Outdoor Unit Match-Ups

Outdoor Unit Indoor Unit Voltage

MPA009S4S-*L MWMA009S4-*L

MPA012S4S-*L MWMA012S4-*L

MPB009S4S-*L MWMB009S4-*L

MPB012S4S-*L MWMB012S4-*L

MPA009S4S-*P MWMA009S4-*P

MPA012S4S-*P MWMA012S4-*P

MPA018S4S-*P MWMA018S4-*P

MPA024S4S-*P MWMA024S4-*P

MPA030S4S-*P MWMA030S4-*P

MPB009S4S-*P MWMA009S4-*P

MPB012S4S-*P MWMA012S4-*P

MPB018S4S-*P MWMA018S4-*P

MPB024S4S-*P MWMA024S4-*P

MPB030S4S-*P MWMB030S4-*P

MLA009S4S-*P MWMA009S4-2P

MLA012S4S-*P MWMA012S4-2P

MLA018S4S-*P MWMA018S4-2P

MLA024S4S-*P MWMA024S4-2P

115V
115V

115V
115V

208/230V
208/230V
208/230V
208/230V
208/230V

208/230V
208/230V
208/230V
208/230V
208/230V

208/230V
208/230V
208/230V
208/230V

4

Typical System Components

IMPORTANT - Condensate drain line must always

be located at the bottom of the
bundle.)

Mounting Plate

Wiring

Line set
(wrapped in foam insulation)

Filter

Return Air

Supply Air

Indoor Unit

Indoor unit wiring connections
(under access plate)

Utility

Wireless Remote

Control

Outdoor Unit

009-030 shown

Bundle

Access cover for power
and control wiring
connections

Condensate drain line
(field-provided)

TAPE

Condensate drain line

(wrapped in foam insulation)

Refrigerant Line Set, Condensate Line

And Indoor / Outdoor Cable

(field-provided)

UV-rated tape (field-provided)

IMPORTANT - The refrigerant
metering device for this system is
located in the outdoor unit. This
makes it necessary to insulate the
refrigerant lines individually to
prevent sweating.

208/230V Outdoor Unit

Terminal Block

1 2 3 L1 L2

To Indoor

Unit

To Power

Supply

Liquid and vapor shut off valves

Figure 1. Typical System Shown

5

Access cover
for valves

115V Outdoor Unit

Terminal Block

1 2 3 L N

To Indoor

Unit

To Power

Supply

System Dimensions

A

E

D

B

C

TYPICAL APPEARANCE OF UNITS

Outdoor Units

Table 1. Outdoor Unit Dimensions - Inches (mm)

Model

MPA009S4S-*L

MPA009S4S-*P

MPA012S4S-*L

MPA012S4S-*P

MPA018S4S-*P

MPA024S4S-*P

MPA030S4S-*P

MPB009S4S-*L

MPB012S4S-*L

MPB012S4S-*P

MPB009S4S-*P

MPB018S4S-*P

MPB024S4S-*P

MPB030S4S-*P

Unit of

Measurement

inches 33-1/4 21-5/8 22 11-3/8 12-3/4

mm 845 549 559 289 324

inches 36-1/8 22 27-1/2 12-3/4 13

mm 918 559 699 324 330

inches 40-5/8 25-1/4 31-7/8 15-1/8 16

mm 1032 641 810 384 406

inches 34-1/4 20-1/4 21-7/8 13-1/8 13-3/8

mm 870 514 556 333 340

inches 33-1/8 19-1/8 21-7/8 11-7/8 11-3/4

mm 842 486 556 302 298

inches 36 21-1/4 27-5/8 14-1/4 13-3/4

mm 914 540 702 362 349

inches 37-1/4 26-1/2 31-7/8 16-3/8 15-7/8

mm 1032 673 810 416 403

A B C D E

MLA009S4S-*P

MLA012S4S-*P

MLA018S4S-*P

MLA024S4S-*P

inches 34-1/4 20-1/4 21-3/4 12-1/4 13-3/8

mm 870 514 552 311 594

inches 36 21-1/4 27-5/8 13-3/4 16

mm 914 540 702 349 406

inches 40-3/4 26-1/2 31-7/8 15-1/8 16

mm 1035 673 810 384 406

6

Indoor Units

B

A

Table 2. Indoor Unit Dimensions - Inches (mm)

C

D

Size

MWMA009S4S-*L

MWMB009S4S-*L

MWMA012S4S-*L

MWMB012S4S-*L

MWMA009S4S-*P

MWMA012S4S-*P

MWMA018S4S-*P 39 991 12-3/8 314 34-3/4 883 8-5/8 210

MWMA024S4S-*P

MWMB030S4S-*P

32-7/8 835 11 279 29-1/4 743 7-7/8 200

46-3/4 1187 13-1/2 343 42-1/2 1080 10-1/4 260MWMA030S4S-*P

A B C D

in. mm in. mm in. mm in. mm

7

System Clearances

Outdoor Unit

12

(305)

Indoor Unit

Wall

24 (610)

24

(610)

1

Minimum rear clearance can be 6 inches (152 mm) when mounted on brackets

and with no obstructions on the other three sides.

Figure 2. Outdoor Unit Clearances - Inches (mm)

Ceiling

6” (152 mm)

Minimum Clearance

5”

(127 mm)

Minimum

Wall

5”

(127 mm)

Minimum

79

(2007)

Air Outlet

Air Inlet

1

12

(305)

Any Object

59”
(1499 mm)
Minimum

Vertical Clearance - Clearance to Floor - 72 inches (1829 mm) Minimum

96 inches (2438 mm) Recommended

Figure 3. Indoor Unit Clearances - Inches (mm)

Floor

FRONT VIEW

SIDE VIEW

8

Torque Requirements for Caps and
Fasteners

When servicing or repairing HVAC components, ensure
the fasteners are appropriately tightened. “Table 1. Torque
Requirements” on page 9 provides torque values for
fasteners.

IMPORTANT

Only use Allen wrenches of sufcient hardness (50Rc -

Rockwell scale minimum). Fully insert the wrench into
the valve stem recess.

Service valve stems are factory-torqued from 9 ft.-lbs.
(12 N*m) for small valves, to 25 ft.-lbs. (34 N) for large
valves) to prevent refrigerant loss during shipping and
handling. Using an Allen wrench rated at less than 50Rc
risks rounding or breaking off the wrench, or stripping
the valve stem recess.

See the Lennox Service and Application Notes C-08-1
for further details and information.

Table 1. Torque Requirements

Parts

Service valve cap 8 ft.-lb. 11

Sheet metal screws 16 in.-lb. 2

Machine screws #10 27 in.-lb. 3

Compressor bolts 7 ft.-lb. 10

Gauge port seal cap 8 ft.-lb. 11

Recommended Torque

U.S. Newton-Meter- N

Indoor Unit Installation

CAUTION

In order to avoid injury, take proper precaution when
lifting heavy objects.

Unit Placement Considerations

AVOID

Do not install the unit in the following locations:

• Areas exposed to petrochemicals or petrochemical
products

• Areas exposed to salt or other corrosive materials or
caustic gases

• Areas exposed to extreme voltage variations (such as
factories

• Tightly enclosed areas that may impede service of the
unit

• Areas exposed to fossil fuels (such as oil or gas in
kitchens)

• Areas exposed to strong electromagnetic forces

• Areas exposed to acids or alkaline detergents

DO

• Place the unit so that it is not exposed to direct sunlight

• Ensure the structural ceiling can support the weight of
the unit

• Select a location where condensate line will have the
shortest run to a suitable drain per local codes

• Allow sufcient space around unit for proper operation
and maintenance

• Install unit a minimum of 3 feet (1m) away from any
antenna, power cord (line) radio, telephone, security
system, or intercom. Electrical interference and radio
frequencies from any of these sources may affect op­eration

• Be sure to instruct customers how to properly operate
the unit (especially maintenance of air lter, and oper­ation procedure) by having them carry out operations
themselves while looking at the manual provided with
the controller

Determining Wall Mounting Plate Location

Left piping

Left back piping

Right back piping

Right piping

Figure 4. Determining Exit Locations

1. Remove the wall mounting plate from the back of the
indoor unit.

2. Determine the best exit location for utility bundle (line
set, condensate line and wiring). See the following
section concerning wall sleeve installation instructions.

3. Position the wall mounting plate on the wall so that,
when installed, the unit will be at least 6 inches (152
mm) from the ceiling and 5 inches (127 mm) from the
wall on either side. The wall mounting plate must be
level side-to-side.

4. Use the wall mounting plate as a template to determine
the exit point for utility bundle. Mark the wall to facilitate

drilling hole for utility bundle.

Installation of Wall Mounting Plate

Install the wall mounting plate (see “Figure 8. Wall
Mounting Plates - Inches (mm)” on page 11) so that it is
correctly positioned horizontally and vertically. The indoor
unit must be installed level on the wall to allow proper
condensate drainage.

1. Use a carpenter’s level or measuring tape to verify the
wall mounting plate is horizontally level.

2. Secure the wall mounting plate to the wall using the
provided screws and screw anchors.

NOTE: It is important to use all screws provided to secure

the wall mounting plate to the wall. Additional holes
may be drilled through the metal wall mounting

9

plate to better secure wall plate. Field-provided

anchors/xings may be required depending on wall

construction. Use the appropriate type of anchors
for the application.

3. The wall mounting plate must be installed ush against
the wall so that the indoor unit will be ush after

installation. Any space between the wall and unit will
cause noise and vibration.

4. The wall mounting plate must be installed horizontally
level on the wall.

Installation of Wall Sleeve

The utility bundle may be routed out of the back of the unit
or out either side. If the bundle is to be routed out the back

through an external wall, use a eld-provided wall sleeve

to protect the utility bundle.

NOTE: If the utility bundle will be routed out the side of the

indoor unit and up the wall above a false ceiling,

continue to the next section.

1. Prior to making the hole and installing the wall sleeve
for the utility bundle, check to ensure that there are
no other utilities located in the wall behind the hole
location.

2. Cut a hole in the wall using a suitable hole saw. Hole
should be at a slight downward slant - 3/16” to 3/8”
toward the outdoor side.

3. Measure the thickness of the wall from the inside edge

to the outside edge and cut the eld-provided wall

sleeve at a slight angle 1/4” (6 mm) shorter than the
thickness of the wall.

Installation of Indoor Unit on Wall Mounting Plate

1. A length of eld-provided exible condensate piping
should be connected to the drain prior to securing the
unit to the wall mounting plate.

2. If the factory-provided refrigerant piping connections

and eld-provided exible condensate piping are long
enough to enable nal eld connections after unit is
installed on wall mounting plate, use eld-provided

tape to bundle them together.

3. The utility bundle may be routed out of the back of the
unit or out either side. If the bundle is to be routed
out the back through an external wall, feed the utility
bundle through the wall sleeve. If the utility bundle is
to be routed out of the side of the indoor unit and up
an inside wall, carefully form the utility bundle so that
it makes a gentle 90° turn.

4. Align the back of the indoor unit with the hooks at the
top of the wall mounting plate. Move the unit from side
to side to make sure that it settles securely.

5. The bottom of the unit can be lifted to facilitate
refrigerant piping and condensate drain connections,
if necessary.

HOOKS AT TOP

OF MOUNTING

BRACKET

TEMPORARY

SPACER

(To facilitate

connections)

INSIDE

OUTSIDE

Typical

installation

procedure

shown.

Figure 5. Boring Hole for Wall Sleeve

USE SUITABLE TOOL TO CUT PVC FOR WALL

SLEEVE AT SLIGHT ANGLE AS SHOWN.

Figure 6. PVC Wall Sleeve Installation

NOTE: When passing bundled services through an

exterior brick or concrete wall, protect the

copper pipes and wiring from the effects of these
construction materials by using a sleeve made
of suitable material. The integrity of copper pipe

and wiring can deteriorate when exposed to these

construction materials.

Figure 7. Secure Unit to Wall Mounting Plate

10

MWMA009S4, MWMB009S4, MWMA012S4, MWMB012S4

5-1/2 (140)

1-3/4 (44)

Left rear side

refrigerant pipe inlet

2-1/2 (64) diameter

7/8 (22)

Left rear side

refrigerant pipe inlet

2-1/2 (64) diameter

12-3/8 (314)

10-1/4 (260)

32-7/8 (835)

MWMA018SA

39 (991)

4-3/8
(111)

1-3/8

(35)

5-1/4 (133)

Indoor unit

outline

11 (279)

1-3/4 (44)

Right rear side

refrigerant pipe inlet

2-1/2 (64) diameter

Indoor unit

outline

1-3/4 (45)

Right rear side

refrigerant pipe inlet

2-1/2 (64) diameter

Left rear side

refrigerant pipe inlet

2-1/2 (64) diameter

MWMA024S4, MWMA030S4, MWMB030S4

10-1/8

(257)

46-3/4 (1187)

10-7/8

(276)

7/8 (22)

Figure 8. Wall Mounting Plates - Inches (mm)

Indoor unit

outline

13-1/2 (343)

1-3/4 (44)

Right rear side

refrigerant pipe inlet

2-1/2 (64) diameter

11

Indoor Unit Condensate Piping Connections

e no

IMPORTANT

Make sure that drain piping is properly routed and
insulated to prevent both leaks and condensation.

1. Use a eld-provided hose clamp to secure the drain

line stub on the side of the cabinet to a eld-supplied

1-inch (25 mm) drain line.

NOTE: Take care not to over-tighten the hose clamps this

may damage the drain line stub.

NOTE: Connection between stub and drain line must be

watertight. Apply non hardening plumbing joint
compound if needed to ensure a watertight seal.

2. Conrm proper slope (not less than 1/4 inch per foot
(18 mm per m)) and routing of condensate lines to
ensure moisture is drained away from the indoor unit.

3. Drain should be as short as possible and should
not have any droops or kinks that would restrict

condensate ow and shall be approved resistant pipe.

There must be a 2-inch (51 mm) space between the

end of the condensate drain and the nal termination

point (ground, open drain, etc.) to ensure that the line
will drain freely.

4. After the system installation is complete, the
condensate drain line must be checked for leaks and

proper drainage. If a eld-provided condensate pump

has been installed, it must be checked to ensure proper
operation. This check is part of the start-up process
which must be done by the installing contractor.

IMPORTANT

Drain should have a slope of at least ¼ inch per foot and
should be approved corrosion-resistant pipe. You must

conrm operation of every drain and pump in the system

as part of the commissioning procedure.

CORRECT

Make sure there ar

kinks or dent in drain

hose to ensure proper

drainage.

Figure 9. Condensate Line

Outdoor Unit Installation

Placement Considerations

Consider the following when positioning the unit:

• In coastal areas or other places with salty atmosphere
of sulfate gas, corrosion may shorten the life of the
unit. In coastal areas, the coil should be cleaned with
potable water several times per year to avoid corrosive
buildup (salt)

• Some localities are adopting sound ordinances based
on the unit’s sound level registered from the adjacent
property, not from the property where the unit is in­stalled. Install the unit as far as possible from the prop­erty line

• When possible, do not install the unit directly outside
a window. Glass has a very high level of sound trans­mission

• Install unit level

Building Structure

Ground
Level

Figure 10. Install Unit Level

• Choose a place solid enough to bear the weight and
vibration of the unit, where the operation noise will not

be amplied

• Choose a location where the hot air discharged from
the unit or the operation noise will not be a nuisance
to neighbors

• Avoid installing the outdoor unit near a bedroom or
other places where noise may cause a problem

• There must be sufcient space to carry the unit into
and out of the site

• There must be unobstructed air ow around the air in­let and the air outlet

• The unit must not be installed in areas where a am­mable gas leak may occur

• Install the outdoor unit a minimum of 3 feet (1m) away
from any antenna, power cord (line), radio, telephone,
security system, or intercom. Electrical interference
and radio frequencies from any of these sources may
affect operation

• Since water drains from the outdoor unit during vari­ous stages of operation, do not place anything which
may be damaged by moisture under the unit

CAUTION

In order to avoid injury, take proper precaution when
lifting heavy objects.

12

Direct Sunlight, Rain, Snow and Ice Protection

Air Inlet

Air Outlet

• If the outdoor unit is subjected to prolong exposure to
direct sunlight with temperatures over 100°F (38°C) a
canopy is recommended as illustrated in “Figure 11.
Outdoor Unit on Pedestal and Protective Canopy” or
“Figure 16. Dog House-Style Shelter” on page 14

IMPORTANT

The construction of a canopy or shade is necessary
because of an ambient limit control set to 122°F (50°C)
to protect the electronics. If the outdoor unit is placed in
direct sunlight it is possible that the limit may activate
and shut down the unit.

• Place unit away from overhanging roof lines which
would allow water or ice to drop on, or in front of, coil
or into unit. Construct a canopy as illustrated in “Figure

11. Outdoor Unit on Pedestal and Protective Canopy”

• The unit base should be elevated above the depth of
average snows as illustrated in “Figure 12. Outdoor
Unit on Brackets above Snow Line”

• In heavy snow areas, do not place the unit where drift­ing will occur as illustrated in “Figure 13. Outdoor Unit
Air Flow Obstructed by Snow”

• Carefully consider how to manage defrost water dis­posal to prevent ice from blocking walkways or creat­ing a safety hazard near the outdoor unit as illustrated
in “Figure 14. Avoid Defrost Water Ice Hazard”

Protective canopy

Protective canopy

Figure 12. Outdoor Unit on Brackets above Snow

Line

12 in

79 in

2007 mm

Air Outlet

305 mm

Air Inlet

24 in

610 mm

12 in

305 mm

Side View

Air Inlet

Front View

Pedestal
(stand)

Pedestal

(stand)

Air Outlet

Figure 11. Outdoor Unit on Pedestal and Protective

Canopy

Figure 13. Outdoor Unit Air Flow Obstructed by

Snow

Figure 14. Avoid Defrost Water Ice Hazard

13

Prevailing Winds

12 in

305 mm

24 in

610 mm

24 in

610 mm

12 in

305 mm

NOTE - Minimum clearances shown.

Drain
Connector

Chassis

Condensate Drain
(location varies per model)

Normally wind bafes are not required for a outdoor unit.

However, in order to maximize reliability and performance,
the following best practices should be followed.

If unit coil cannot be installed away from prevailing winter
winds, some method of protecting the coil is recommended.
However, minimum clearances as reference in “Figure 2.
Outdoor Unit Clearances - Inches (mm)” on page 8
must be observed at all times.

Common application examples are:

• When prevailing winds are from the air inlet side, then
position the wind barrier a minimum of 12 inches (305
mm) from the unit as illustrated in “Figure 15. Wind
Barrier”

• When prevailing wind is into the discharge side, then
position the wind barrier a minimum 79 inches (2007
mm) from the front of the unit as illustrated in Figure

14. Wind Barrier”

• Outdoor unit can be installed in a dog house style
shelter as illustrated in “Figure 16. Dog House-Style
Shelter”

• Outdoor unit can be installed in a alcove or under
a roof overhang as illustrated in “Figure 17. Unit In­stalled in Alcove”

Prevailing Winter Winds from Air Inlet Side

24 in

610 mm

12 in

305 mm

NOTE - Minimum clearances shown.

12 in

305 mm

610 mm

24 in

Figure 17. Unit Installed in Alcove

Buried Refrigerant Pipe Protection

• All refrigerant lines must be insulated regardless of if

it is buried

• In addition to insulating each line of piping, buried lines
must rest inside a sealed, watertight conduit

• The conduit must be designed so it cannot collect and
retain water

Wind Barrier

Inlet Air

Discharge Air

Wind Barrier

Prevailing Winter Winds From Air Discharge Side

12” (305mm)
Min. Distance

79” (2007mm)
Min. Distance

Figure 15. Wind Barrier

Outdoor Unit Condensate Piping

Condensate formed during the heating and defrost
processes must be drained from heat pump units. Drain
holes are provided in the base of the units to ensure proper
drainage. Heat pumps must be raised when installed on a
concrete pad or the ground to allow drainage to occur. If
the heat pump unit is installed on wall mounting bracket,
insert the provided drain connector into one of the 1

inch (25 mm) drain holes and attached a eld-provided
insulated drain hose to the connector. Use eld-provided

rubber plugs to cover any unused drain holes as illustrated
in “Figure 18. Condensate Drain”.

Figure 16. Dog House-Style Shelter

Figure 18. Condensate Drain

14

Securing the Outdoor Unit

Slab or Roof Mounting

Install the unit a minimum of 4 inches (102 mm) above the
roof or ground surface to avoid ice build-up around the
unit. Place the unit above a load bearing wall or area of
the roof that can adequately support the unit. Consult local
codes for rooftop applications.

CAUTION

Roof Damage!

This system contains both refrigerant and oil. Some

rubber roong material may absorb oil. This will cause

the rubber to swell when it comes into contact with oil.
The rubber will then bubble and could cause leaks.
Protect the roof surface to avoid exposure to refrigerant
and oil during service and installation. Failure to follow
this notice could result in damage to roof surface.

6 in

152 mm

Air Inlet

Air Outlet

Figure 21. Securing Outdoor Unit to Brackets

Securing Outdoor Unit to Slab, Frame, or Rails

If the outdoor unit is installed on a eld-provided slab or

frame, use lag bolts or equivalent to secure the outdoor
unit to the slab or frame.

Four Field-provided Anchor Bolts

Figure 19. Securing Outdoor Unit to Slab

Four Field-Provided

Anchor Bolts

Refrigerant Piping Connections

Field piping consists of two copper lines connecting the
outdoor unit to the indoor unit. “Table 2. Refrigerant Piping
and Indoor Unit Connection Sizes” lists the connection
sizes. The connections are made using the provided brass

are nuts at the end of the refrigerant piping connections.

Both lines must be individually insulated.

1. The seal on the unit refrigerant piping connections
should remain in place until the last possible moment.
This will prevent dust or water from getting into the
refrigerant piping before it is connected.

2. CAREFULLY adjust refrigerant piping connections to
suit the application.

3. Slowly loosen one of the are nuts to release the
factory nitrogen charge from the indoor units only.

4. Remove the are nuts from the connections on the
unit and discard the seal from each of the piping
connections.

5. Slide the are nuts onto the ends of the eld-provided

refrigerant piping before using a suitable aring tool to
are the end of the copper pipe.

6. Apply recommended HFC-410A refrigerant lubricant

to the outside of the ared refrigerant lines.

Figure 20. Securing Outdoor Unit to Rails

Securing Outdoor Unit to Hanging Brackets

If the outdoor unit is installed on eld-provided wall

mounting brackets, use lag bolts or equivalent to secure
the outdoor unit to the bracket. Minimum rear clearance
can be reduced to 6 inches (152 mm) when mounted
on brackets and with no obstructions on the other three
sides. Allow for condensate disposal when placing units
above one another.

IMPORTANT

The compressor in this unit contains PVE
oil (Polyvinylether). PVE oil is formulated for

hydrouorocarbon (HFC) refrigerants, such as HFC-

410A, which this system contains. While it may have
some miscibility properties with mineral-based oil and
POE oil (Polyolester), it is not recommended to mix PVE
oil with any other type of refrigerant oil.

15

7. Align the threaded connections with the

ared refrigerant lines. Tighten the are nuts
lightly at rst to obtain a smooth match as

illustrated in “Figure 22. Making Connections
(Male to Female Connection)”.

8. Once snug, continue another half-turn on each nut
which should create a leak-free joint. A torque wrench

may be used to tighten are nuts using “Table 3. Flare

Nut Torque Recommendations”. Do not over-tighten

a ared joint. Flared connections should always

be accessible and must be insulated to prevent
condensation.

9. After refrigerant piping has been installed and checked

for leaks, apply insulation over all ared connections.

Table 2. Refrigerant Piping and Indoor Unit

Connection Sizes

Size

(Btuh)

9000 1/4 3/8

12000 1/4 1/2

18000 1/4 1/2

24000 3/8

30000 3/8 5/8

Liquid Line

in.

Suction Line

in.

5/8

Table 3. Flare Nut Torque Recommendations

Outside

Diameter

Inches

1/4 15 ft.-lb. (20 N) 1/4 turn

3/8 26 ft.-lb. (35 N) 1/2 turn

1/2 41 ft.-lb. (56 N) 7/8 turn

5/8 48 ft.-lb. (65 N) 1 full turn

Recommended

Torque

No torque wrench available

Finger tighten and use an

appropriately sized wrench to

turn an additional:

A

CANT ON THE OUTSIDE OF

THE FLARE

MALE FLARE

CONNECTION

B

Figure 22. Making Connections

(Male to Female Connection)

IMPORTANT

Always use two wrenches when tightening are nuts to

avoid twisting refrigerant piping. DO NOT over-tighten

are nuts.

TORQUE WRENCH

TO INDOOR

UNIT

BACKUP

WRENCH

TO OUTDOOR UNIT

Figure 23. Tighten Flare Nut

16

Table 4. Refrigerant Line Set Requirements

OUTDOOR UNIT

OUTDOOR UNIT

INDOOR UNIT

INDOOR UNIT

Maximum Line Set
Length

Maximum Line Set

Length

Maximum

Elevation -

Outdooor

Unit BELOW

Indoor Unit

Maximum

Elevation -

Outdooor

Unit ABOVE

Indoor Unit

Minimum Line Set
Length - 10 ft. (3m)

Minimum Line Set
Length - 10 ft. (3m)

Outside Unit BELOW Indoor Unit Outside Unit ABOVE Indoor Unit

Do not allow for excess length of line sets to be left rolled up as part of the
required distance, or in general. This will also cause additional performance issues.

IMPORTANT

Each system size has a line set length and vertical elevation parameters.

Line Set Diameters (in.)

System Size (KBtu)

Liquid Gas

009 1/4 3/8 40 (12) 40 (12) 82 (25)

012 1/4 1/2 40 (12) 40 (12) 82 (25)

018 1/4 1/2 66 (20) 66 (20) 98 (30)

024/030 3/8 5/8 82 (25) 82 (25) 164 (50)

Maximum Elevation

Outdoor Unit BELOW

Indoor Unit - Feet

(Meter)

Maximum Elevation

Outdoor Unit ABOVE

Indoor Unit - Feet

(Meter)

Maximum Line

Set Length - Feet

(Meters)

17

Leak Test and Evacuation

Air and moisture remaining in the refrigerant system will
have undesirable effects as indicated below:

• Pressure in the system rises

• Operating current rises

• Cooling or heating efciency drops

• Moisture in the refrigerant circuit may freeze

• Water may lead to corrosion of parts in the refrigera­tion system

The line set between the indoor and outdoor units
must be leak tested and evacuated to remove any non­condensables and moisture from the system.

Leak Test

Use the following procedure to test for system leaks:

1. Connect the manifold gauge set and dry nitrogen gas
cylinder to the suction and gas service ports.

2. Open valve on nitrogen cylinder.

3. Pressurize the system per the pressure test

specications in “Table 5. Pressure Test Specications”.

4. Check that the system pressure remains stable. If
there is any movement check system for leaks.

5. After the system is found to be free of leaks:

• Close valve on nitrogen cylinder

• Relieve the nitrogen pressure by: loosening the

charge hose connector at the nitrogen cylinder

• When the system pressure is reduced to normal,

disconnect the hose from the cylinder

Table 5. Pressure Test Specications

Bar Psig kPa Duration

1 3 44 303 Minimum of 10 minutes

2 15 220 1517 Minimum of 10 minutes

3 32 470 3241 Minimum of 10 minutes

4 45 650 4482

5 32 470 3241

1 hour. Stress test to prove the
integrity of the complete installation.

24 hours. Lower system pressure

test, after conrmation No. 4 was

successfully completed.

IMPORTANT

Use only oxygen-free nitrogen (OFN).

Triple Evacuation Procedure

A Micron or Torr gauge must be used for this procedure.

1. Discharge the oxygen-free nitrogen and evacuate the
system to a reading of 8000 Microns (8 Torr) using all
service valves.

2. Break the vacuum by allowing nitrogen into the port
connections (liquid and gas line pipes) until a positive
pressure is achieved.

3. Evacuate the system to a reading of 5000 Microns (5
Torr).

4. Break the vacuum by allowing nitrogen into the port
connections (liquid and gas line pipes) until a positive
pressure is achieved

5. Evacuate the system to a minimum reading of 500
Microns (0.5 Torr).

6. For a moisture-free system, ensure the vacuum is held
without movement for a minimum of 4 hours.

7. If vacuum fails to hold, carry out steps 2 through 6 until
vacuum holds.

Wiring Connections

WARNING

Electric Shock Hazard. Can cause injury or death. Unit
must be rounded in accordance with national and local
codes.

Line voltage is present at all components when unit is
not in operation. Disconnect all remote electric power
supplies before opening access panel. Unit may have
multiple power sources.

CAUTION

All terminal connections must be made as illustrated
in the following diagrams. Improperly connected wiring
could damage unit or cause communication errors
between indoor and outdoor units.

In the U.S.A., wiring must conform with current local codes
and the current National Electric Code (NEC). In Canada,
wiring must conform with current local codes and the
current Canadian Electrical Code (CEC).

Outdoor Unit

• Refer to unit nameplate for minimum circuit ampacity
and maximum over-current protection size

• Make all electrical power wiring connections at the out­door unit

• Be sure to reattach all electrical box covers after con­nections are complete

Indoor Unit

• All indoor units are powered by the outdoor unit

• Communication Wiring (Indoor Units 30K and Below):
Use one stranded 4-conductor wire to provide power
and communication

• Communication Wiring (Indoor Units 36K and Above):
Use one stranded 3-conductor wire to provide power
and one stranded 2-conductor wire to provide commu­nication

• Use minimum of 18 GA stranded wiring

NOTE: When installing a condensate pump the line voltage

will have to be broken by using the condensate

wiring or through the use of an external relay or

contactor

18

208/230V Outdoor Unit

Terminal Block

208/230V Indoor Unit

Terminal Block

1 2 3 L1 L2

From Power

Supply

Outdoor Unit Indoor Unit

1 2 3

NOTE - Use minimum of 18 GA stranded wiring.

Figure 24. Single Zone Wiring

IMPORTANT

This unit must be properly grounded and protected by a
circuit breaker. The ground wire for the unit must not be
connected to a gas or water pipe, a lightning conductor
or a telephone ground wire.

Do not connect power wires to the outdoor unit until
all other wiring and piping connections have been
completed.

Do not install the unit near a lighting appliance that
includes a ballast. The ballast may affect remote control
operation.

IMPORTANT

All diagrams (Figure 25 through Figure 36) are typical
wiring diagrams. Refer to the wiring diagram on the unit
for actual wiring.

19

M

M

5

SWING MOTOR1

NOTE: COMPONENT IN
DASH LINE IS OPTIONAL
OR FIELD WIRING

RED

B LACK

Y ELLOW

2

3

1

FOR SETTING NETADDRESS

0

1

F

2

E

3

D

4

ENC2+S 1

CODE

NETADDR ESS

C

5

B

6

A

7

9

8

0~F 0~F 0~F 0~F

0~15

U

BLUE

RED

V

W

BLACK

Y/G

CN10A

8

OPTIONAL

Wired Controller

0

ON

1

1

ON

F

2

E

3

D

4

C

5

B

6

A

7

9

2

1

8

0

1

F

2

E

3

D

4

C

5

B

6

A

7

9

2

8

0

ON

1

1

ON

F

2

E

3

D

4

C

5

B

6

A

7

9

2

1

8

5

2

16~31 32~47 48~63

CN2(CN201)

CN1(CN101)

Programmable
Wired Controller

Note: The programmable wired
controller and LVM use the same
port CN403.

Figure 25. MWMA and MWMB Unit Wiring Diagram

6

CN28

CN26

CN34

CN33

CN32

CN31

CN7

CN5

CN4

CN6

YELLOW

BLUE

BROWN

Y/G

CN15

U
V

W

RY3

L2

BLUE

4

N-A

DISPLAY BOARD

CN3(CN301)

OPTIONAL

VALVE

5

4

PAN HE ATER

CRANK CASE
HEA TER

CN501

ADAPTER BOARD

CN403

X Y E

YELLOW

BROWN

To LVM
Comm.Bus

RED

Figure 26. 115V MPA009S4S-*L and MPA012S4S-*L Outdoor Unit Wiring Diagram

L-A(CN37)

BLACK

N-B

L-B(CN36)

BLACK

CN8

RED

REACTOR

20

GND

CN10

CN9

RED

5

Y/G

N
L

POWER
SUPPLY
115V

OR

CN9-1

WHITE

REACTOR

COMPRESSOR

BLACK

CN28

CN32-1

WHITE

RED

CN29

BLUE

CN30

CN7

3

DC-FAN

COMPRESSOR

DISCHARGE TEMP. SENSOR

CN3

CN22

Y/G

COIL TEMP. SENS

OUTDOOR

CN21

OUTDOOR TEMP. SENSOR

6

CRANKCASE

4-WAY

VALVE

BLUE

BROWN

1

HEATER

PAN
HEATER

2

YELLOW

BLUE

RED

3

L2

Y/G

CN31

CN33

CN26
CN27

CN16

CN1

CN2

Y/G

Figure 27. 208/230V MPA009S4S-*P and MPA012S4S-*P Outdoor Unit Wiring Diagram

CRANKCASE HEATER

RED

Y/G

4-WAY VALVE

BLACK

YELLOW

Y/G

RED

CN6

BLUE

CN3

CN4

CN8

CN7
CN2

CN6-1

Y/G

OUT DOOR
FAN

3

CN414

CN15

RY1

OUTDOOR

CN18

6

L-OUT

MAIN

PCB

WHITE

OUTDOOR TEMP.SENSOR

CN1

O U TD OOR COIL
TEM P.

CN14

BLACK

CN13

CN12

BLUE

RED

BLACK

CN10

COMPRESSOR

U
V

W

TEMP.SENSOR

BLUE

1

RED

2

BLACK

3

W

COMPRESSOR

BLUE

BLUE

U

V

Y/G

Figure 28. 208/230V MPA018S4S-*P Outdoor Unit Wiring Diagram

21

Compressor
Control Board

L-OUT

COMPRESSOR DISCHARGE
TEMP.SENSOR

2

S

CN10

BLACK

RED

CODE PART NAME

COMPRESSOR

COMP

OUTDOOR DC FAN

FM1

HEAT1

CRANKCASE HEATER

HE AT 2

PA N HE ATE R

H-PRO

HIGH PRESSURE SWITCH

L-PRO

LOW PRESSURE SWITCH

PFC INDUCTOR

L

SV

4-WAY VALVE

OUTDOOR COIL

T3

TEMP.SENSOR

T4

OUTDOOR TEMP.SENSOR

Y/G

RED

PAN HEATER

Y/G

CRANK CASE HEATER

Figure 29. 208/230V MPA024S4S-*P Outdoor Unit Wiring Diagram

CN3

CN4

CN10

CN22

CN40

CN44

CN8

CN9

BLACK

CN7

3

CN33

HEAT1

HEAT2

MAIN BOARD

CN5

CN6

RED

COMP

Y/G

Compressor
Control Board

YELLOW

BLACK

W

RED

V

BLUE

U

COMPRESSOR DISCHARGE

SE NSO R

TEMP.

BLUE

SV

BLUE

BLACK

RED

BLUE

BLUE

BLUE

CN54

CN51

CN53

CN52

3

CN55

CN19

7

W

V

U

RED

BLACK

CR ANK CAS E HEA TER

PA N HEA TER

T3

T4

H-PRO

L-PRO

YELLOW

7

L

YELLOW

BLACK

V1. 0 2015/ 5/08

Y/G

FM1

3

CN12 CN11

CN2

CN1

P-1

3

YELLOW

S

BLACK

RED

Y/G

Figure 30. 208/230V MPA030S4S-*P Outdoor Unit Wiring Diagram

22

JXI

Y/G

RED

1

TO IN DOOR UNI T

BLA CK

2

3

YEL LOW

BLACK

RED

L2

L1

L1

POW ER SUP PLY

L2

COMPRESSOR

Y/G

4-WAY VALVE

CN 50

OUTDOOR

FAN

CN 7

3

6

CN 31

PAN
HEATER

CN 15

CN 60

CRANKCASE
HEATER

CN 17

B LUE

B RO WN

BLACK

3

2

N

R E

D

B LUE

Y/G

1

Y/G

OU TD OOR

T EMP. SENS OR

C OMP R ES S OR

DISCH AR GE

T EMP. S E NSOR

CN 21

OUT DOOR C O IL

T EMP. S ENSOR

Y/G

CN 1A

Y/G

Y/G

3

CN4_1

CN4_2

CN4_3

CN4_4

REACTOR

CAPACITOR

BROWN

BROWN

BLACK

BLACK

2

2

BLACK

W

V

RED

BLUE

U

OUTDOOR
MAIN
PCB

RED

BLACK

WHTIE

Figure 31. 115V MPB009S4S-*L and MPB012S4S-*L Outdoor Unit Wiring Diagram

4-WAY VALVE

OUTDOOR

FAN

CN 7

3

6

CN 31

PAN
HEATER

CN 15

CN 60

CRANKCASE
HEATER

CN 17

BLUE

BROWN

BLACK

3

2

L2

RED

BLUE

Y/G

1

Y/G

CN 21

Y/G

CN 1A

Y/G

Y/G

COMPRESSOR

Y/G

CN 50

3

U

V

W

BLUE

RED

BLACK

EXV

OUTDOOR
MAIN
PCB

OUTDOOR

TEMP . S ENS OR

COMPRES S OR

DISCHARGE

T E MP. S E NS OR

OU TDOOR C OIL

T E MP. S E NS OR

RED

BLACK

WHTIE

Figure 32. 208/230V MPB009S4S-*P and MPB012S4S-*P Outdoor Unit Wiring Diagram

23

Figure 33. 208/230V MPB018S4S-*P and MPB024S4S-*P Outdoor Unit Wiring Diagram

•••••

COMPONENT IN DASH
LINE IS OPTIONAL
OR FIELD WIRING.

4-WAY
VALVE

TS

EXV

Figure 34. 208/230V MPB030S4S-*P, Outdoor Unit Wiring Diagram

24

Figure 35. 208/230V MLA009, MLA012 and 018S4S-*P Outdoor Unit Wiring Diagram

BLACK

W

COM P

YELLOW

CODE

COMP

CAP1

EEV

FM1

H-PRO

L-PRO

SV

TS

T3

T4

RED

V

BLUE

U

DRIVER BOARD

L

L

FM1

3

Y/G

3

CN5 5

CN1 9

W

BLACK

V

RED

U

BLUE

BLUE

BLUE

YELLOW

CN54

CN51

CN53

CN52

RED

BLACK

PART NAME

COMPRESSOR

FAN MOTOR CAPACITOR

ELECTRIC EXPANSION
VALVE

OUTDOOR DC FAN

HIGH PRESSURE SWITCH

PFC INDUCTOR
LOW PRESSURE SWITCH

4-WAY VALVE

DISCHARGE
TEMPERATURE SENSOR
CONDENSER
TEMPERATURE SENSOR

OUTDOOR AMBIENT
TEMPERATURE SENSOR

SV

BLUE

HEAT1

Cra nkcas e Heate r

HEAT2

Bas e Pan Hea ter

T3
T4

36K ODU

ONLY FOR

4-WAY1

H-PRO

L-PRO

BLUE

CN3

CN4

CN10

CN8

CN9

CN7

CN33

CN22
CN40
CN44

MAIN BOARD

BLACK

CN5

CN6

RED

Y/G

EEV

5(6 )

CN20

RED

BLA CK

1

TO INDOO R UNIT

2

YELLOW

L1

3

S

CN2

CN1

P-1

BLACK

RED

L2

L1

L2

POWER SUPPLY

YELLOW
BLACK

RED

Y/G

Y/G

Figure 36. 208/230V MLA024S4S-*P Outdoor Unit Wiring Diagram

25

Unit Start-Up

Troubleshooting

IMPORTANT

Units should be energized 24 hours before unit start-up
to prevent compressor damage as a result of slugging.

1. Inspect all factory- and eld-installed wiring for loose
connections.

2. Verify that the manifold gauge set is connected.

3. Add additional refrigerant charge if required before
opening valves and while system is still under a
vacuum.

4. Open the liquid and suction line service valves to
release the refrigerant charge contained in outdoor
unit into the system.

5. Replace the stem caps and tighten to the value listed
in “Table 1. Torque Requirements” on page 9.

6. Check voltage supply at the outdoor unit terminal strip.
The voltage must be within the range listed on the
unit’s nameplate. If not, do not start the equipment
until you have consulted with the power company and
the voltage condition has been corrected.

7. Refer to the included user guide to operate the system
using the provided remote control.

8. Visually check for binding of both indoor and outdoor
fans.

Table 7. Troubleshooting Codes

Code Description

E0 Indoor unit EEPROM error

E1 Communication error between indoor unit and outdoor unit

E3 Indoor fan speed error

E4 Indoor return air temperature sensor error

E5 Indoor coil temperature sensor error

EC Low refrigerant

EE High water level alarm

F0 Outdoor current overload sensed

F1 Outdoor ambient temperature sensor error

F2 Outdoor coil temperature sensor error

F3 Compressor discharge temperature sensor error

F4 Outdoor unit EEPROM error

F5 Outdoor unit fan speed error

P0 Inverter module IPM error

P1 High or low voltage protection

P3 Outdoor unit low temperature lockout

P4 Compressor drive error

-- Mode conict

P6 Compressor high-pressure or low-pressure switch open

Test Run

Adding Refrigerant for Longer Line Set

The outdoor unit is factory-charged with refrigerant.
Calculate the additional refrigerant required according to
the diameter and the length of the liquid pipe between the
outdoor unit and indoor unit connections.

Be sure to add the proper amount of additional refrigerant.
Failure to do so may result in reduced performance.

Table 6. Additional Refrigerant Charge

System Size

(KBtu)

09 >25 (7.5) 0.161 oz/ft (15g/m)

12 >25 (7.5) 0.161 oz/ft (15g/m)

18 >25 (7.5) 0.161 oz/ft (15g/m)

24 >25 (7.5) 0.322 oz/ft (30g/m)

36 >25 (7.5) 0.322 oz/ft (30g/m)

48 >25 (7.5) 0.322 oz/ft (30g/m)

Pipe Length

(feet / meters)

Amount of Refrigerant

to add

Pre-Checks

Only perform test run after you have completed the
following steps:

• Electrical Safety Checks – Conrm that the unit’s
electrical system is safe and operating properly

• Refrigerant Leak Checks – Check all are nut connec-

tions and conrm that the system is not leaking

• Conrm that suction and liquid valves are fully open.

Procedure

You should perform the Test Run for at least 30 minutes.

1. Connect power to the unit.

2. Press the ON/OFF button on the remote controller to
turn it on.

3. Press the mode button to scroll through the following
functions, one at a time:

• COOL - Select lowest possible temperature

• HEAT - Select highest possible temperature

4. Let each function run for 5 minutes, and perform the
following checks:

26

Table 8. Test Run Checklist

Checks Pass Fail

No electrical leakage

Unit is properly grounded

All electrical terminals
properly covered

Indoor and outdoor units are
solidly installed

All pipe connection points do
not leak

Water drains properly from
drain hose

All piping is properly
insulated

Unit performs COOL function
properly

Unit performs HEAT function
properly

Indoor unit louvers rotate
properly

Indoor unit responds to
remote controller

Double-Check Pipe Connections

During operation, the pressure of the refrigerant circuit
will increase. This may reveal leaks that were not present
during your initial leak check. Take time during the Test
Run to double-check that all refrigerant pipe connection
points do not have leaks.

1. Using remote control, return unit to the normal
operating temperature

2. Using insulation tape, wrap the indoor refrigerant pipe
connections that you left uncovered during the indoor
unit installation process

If Ambient Temperature is below 63°F (17°C)

You cannot use the remote controller to turn on the
COOL function when the ambient temperature is below
63°F (17°C). In this instance, you can use the MANUAL
CONTROL button to test the COOL function.

1. Lift the front panel of the indoor unit, and raise it until
it clicks in place

2. The MANUAL CONTROL button is located on the
right-hand side of the unit. Press it 2 times to select
the COOL function

3. Perform Test Run as normal

Manual control
button

Figure 37. Manual Control Button

Dry Mode Operation (Dehumidication)

Procedure

1. Using the provided wireless remote control, press the
MODE button and select DRY mode.

2. Press the UP/ DOWN button to select the desired
temperature. The temperature setting range is from
62°F (17°C) to 86°F (30°C) in one degree increments.

NOTE: The blower is preset at a low speed and cannot be

changed therefore it will get cold and most likely
will over shoot the temperature setting by 6-10°F
(3-5°C) depending on the room size or other
various factors. Also the Follow Me mode does
not operate in this mode.

NOTE: In addition, the indoor units do not have a humidistat

installed therefore they are unable to determine
humidity levels. This product is not recommend as

a main source for dehumidication.

Sequence of Operation

When in dry mode operation the unit is actually in cooling
mode with a low speed blower operation. Set remote temp
to a lower room temp to begin the dry mode operation.
The compressor will stop when the room temperature is
4°F (2°C) lower than the temperature setting.

However there is a temperature compensation for cooling
mode that is two degrees Celsius. So the unit will stop
when the temperature is 8°F (4°C) lower than the room
temperature settings.

27

28