MRCOOL DIY-24-HP-230B25 User Guide

Download

Page 1

Please read this manual carefully before installation and keep it for future reference.

Installation & Owner’s

Manual

DIY

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

E Star™ Series

ensure you have the latest version of this manual.

Version Date: 12-30-20

Page 2

Contents

Safety Precautions

Warnings .................................................................................................................................. 3

Cautions ................................................................................................................................... 4

Parts Overview

Parts Diagram ......................................................................................................................... 5

Display Window ...................................................................................................................... 6

Accessories ................................................................................................................................... 7

Operating Instructions

Operating Temperature ......................................................................................................... 9

Manual Operation ................................................................................................................... 9

Care and Maintenance

DISCLAIMER: You are assuming the risk by handling materials containing refrigerants under pressure, that if not

handled properly, can cause bodily injury. If you do not feel comfortable conducting this installation process,

Page 1 mrcool.com

Page 3

Contents

Indoor Unit Installation ...........15

1. Selecting an installation location .........15

4. Prepare refrigerant piping ....................18

5. Mount indoor unit ..................................18

Outdoor Unit Installation ......

1. Selecting an installation location ......19

2. Install drain joint .................................20

Refrigerant Piping Connections......................23

1. Prepare Exterior Wall Hole ............................................. 23

2. Unwind Quick Connect® Line Set to necessary length 23

3. Connect Line Set to Indoor Unit ..................................... 24

4. Connect Line Set to Outdoor Unit ................................ 26

5. Opening Refrigerant Valves of Outdoor Unit ............... 28

6. Wrap Piping Connections ............................................... 29

7. Connect drain pipe .......................................................... 30

Electrical Connections .....................................32

.21

Electrical and Gas Leak Checks.......................34

Test Run..............................................................35

Troubleshooting................................................37

mrcool.com

Page 2

Page 4

Safety Precautions

Read Before Using

Incorrect usage may cause serious damage or injury.

The symbols below are used throughout this manual to indicate instructions that should be followed closely or actions that should be avoided to prevent death, injury, and/or property damage.

This symbol indicates ignoring instructions may cause death or serious injury

WARNING

This symbol indicates ignoring instructions may cause bodily injury, damage to the unit, or other surrounding property.

CAUTION

Safety Precautions

This symbol indicates that you should NEVER perform the indicated action.

WARNING

DISCLAIMER: You are assuming the risk by handling materials containing refrigerants under pressure, that if not

handled properly can cause bodily injury. If you do not feel comfortable conducting this installation process,

DO NOT

When connecting the refrigerant piping, the unit. The presence of other gasses or substances will lower the unit’s capacity, and may cause abnormally high pressure in the operation cycle. This could cause an explosion and/or injury.

DO NOT

unit at all times.

DO NOT allow any other substances or gases enter

Page 3

Install the unit in a ﬁrm, stable location that can support the weight of the unit. If the

installation location cannot support the weight of the unit, it could fall and cause serious injury and/or damage.

Manual.

mrcool.com

Page 5

Safety Precautions

. 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, which can cause the

connection points on the terminal to overheat, which car result in ﬁre and/or electrical shock.

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 3 mm of clearances in all poles), and have a leakage current that may exceed 10mA, the residual current device (RCD) having a rated residual operating current not exceeding 30mA, and disconnection all must be present.

10.

This appliance is not inteded for use by individuals (including children) with reduced physical, sensory, or mental

11.

capabilities. It is also not intended for use by individuals with a lack of experience or 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 at all time to ensure that they do not play with

the appliance.

DO NOT

combustible materials.

DO NOT

room. Exposure to excessive amounts of water may cause electrical components to short circuit.

DO NOT

operate your air conditioner in a room where it could be exposed to water, such as a bathroom or laundry

Note about Flourinated Gasses:

the unit itself.

mrcool.com

Page 4

Page 6

Safety Precautions

Parts Overview

NOTE: The installation must be performed in accordance with the requirement of local and national standards. Both power cable and signal cable should be protected by the conduit.

Indoor Unit

(Interior/Air Handler)

Front Panel

Air Filter

Electrical Access

Air inlet rear

Air outlet bottom

Fresh Air Filter

Wall Mounting Plate

Quick Connect® Line Set

(refrigerant pipe)

Air inlet rear

Air inlet si e

Air outlet

Outdoor Unit

(Exterior/Condenser)

NOTE ON ILLUSTRATIONS

Illustrations in this manual are for explanatory purposes. The actual shape of your unit may vary.

Electrical Access

Page 5

mrcool.com

Page 7

Overview - Display

ECO

Fig. 1.2

Display (on front panel of indoor unit)

1. Digital Display:

Displays the Temperature Setting when the air conditioner is operational. Displays the Room Temperature when in FAN mode. Displays the self-diagnostic codes. Displays “ ON” for three seconds when the Timer is ON and/or Fresh, Swing, Turbo, or Silence

feature is activated. Displays “ OF” for three seconds when the Timer is switched OFF . Displays “ OF” for three seconds when the Fresh, Swing, Turbo, or Silence feature is canceled. Displays “ dF” when Defrosting operation is active. Displays “ cF” w Displays “ SC” during Self Clean operation (if feature is available). Displays “ FP” when Freeze Protection is active, operating under 46.4 °F (8 °C) (if feature is

2. Units of Measurement:

hen Anti-Cold Air feature is active in HEAT mode (when air temp is low).

available).

Displays “ °C” for Celsius or, “ °F” for Fahrenheit. Default units are “ switched by simultaneously pressing and holding both the up and down buttons on the remote control.

According to the operation mode (heat/cool, etc.), the Units of Measureme

· Under Cool or Dry mode, it always displays as cool colors (Blue).

· Under Heat mode, it always displays as a warm color (Red).

3. Wireless Mode:

Displays when the wireless control feature is activated.

NOTE: A guide for using the infrared remote can be found in the “Remote Control User Manual” which is included in this literature package.

4. Energy Saving Mode:

Displays when Energy Saving Feature is active. Not available on units not equipped with this feature.

” (Fahrenheit) and can be

°F

nt will display in

mrcool.com

Page 8

Accessories

The air conditioning system includes the following accessories. Use all of the installation parts and accessories to install the air conditioner. Improper installation may

LOOKS LIKE...

Mounting plate

screw

Remote control

Fixing screw for remote

ST2.9 x 10

Optional Parts

Dry battery AAA.LR03

Seal

Drain joint

Neoprene

Note: Illustrations are for explanatory purposes only - The actual shape and size may vary.

(Only for use

when elevated)

(Sealant for Wall Sleeve)

Page 7

mrcool.com

Page 9

Installation & Owner’s

Manual

Remote Control

Manual

Accessories

LOOKS LIKE...

Please read this manual carefully before installation and keep it for future reference.

Owner’s Manual

E-Star™ DIY 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

For more details visit www.MrCool.com

Smart Controller Kit

Plastic Wall Sleeve

Sound deadening pads

Drain Pipe

Cardboard Mounting Plate Template

(w/ Manual in

1 16 ft (5 m)

Quick Connect®

Line Set (refrigerant pipe)

Insulation material

connectors of the pipe)

Page 8mrcool.com

Page 10

Safety Precautions

Operating Instructions

Cooling Operation Heating Operation Drying Operation

Room Temperature

utdoor

Temperature

NOTE:

Manual Operation

Units are equipped with a button to run emergency operation mode. This button is used for manual operation in case the remote control fails, or maintenance is necessary. This can be accessed by opening the front panel.

63°F~90°F

°C~32°C)

32°F~

(0°C~50°C)

(For the models with low ambient cooling system)

32°F~86°F

(0°C~30°C)

5°F~75°F

C~24°C)

50°F~90°F

32°

(0°C~50°C)

°C)

NOTE: The unit must be turned oﬀ before operating the

manual control button. If the unit is operational, continue

pressing the manual control button until the unit is oﬀ.

CAUTION

• This button is used for testing purposes only. Please do not use it unless necessary.

•To restore the remote control operation, use the remote control directly.

Manual Control Button (Forced cooling)

Fig 2.1

Page 9

mrcool.com

Page 11

Operating Instructions

Adjustment of the vertical and horizontal

louvers will change airﬂow direction of

the indoor unit to prevent discomfort and/or uneven room temperatures.

Adjust Vertical Airﬂow (Up/Down) using Vertical

Louver (Fig 2.2):

This function is performed by using the remote control, while the unit is operating. The Vertical louver can move in small increments for each press, or continuously swing up and down automatically. Please refer to the “Remote Control User Manual” for further details.

Adjust Horizontal Airﬂow (Left/Right) using

Horizontal Louver (Fig 2.3 & Fig 2.4)

Move the deﬂector rod, located on the underside of the unit, by pushing the tab to manually adjust the airﬂow

from side to side as desired.

Range

Horizontal Louver

Grill inside)

Fig. 2.3

Vertical

Louver

Fig. 2.2

CAUTION

DO NOT

the blower and suction side. The high speed fan inside may cause injury.

DO NOT operate the unit for long periods of time

in cooling or dehumidifying mode with the airﬂow

direction set downward. This could cause condensation to form on the surface of the vertical louver and allow moisture to drop onto furnishings

or the ﬂoor.

DO NOT

cause it to become out of sync. If this occurs, follow these steps:

1. Turn oﬀ power to the unit

2. Remove wireless module from back of front

3. Turn oﬀ power to the circuit at the breaker

4. Wait a few seconds and turn the power back on

5. Reinstall wireless module into front cover

6. Turn the power to the unit back on

NOTE: After a quick restart, the vertical louver may remain static for approximately 10 seconds.

move the vertical louver manually, as this

cover

at the breaker

Range

Horizontal

Louver

Fig. 2.4

mrcool.com

NOTE: Open angle of the vertical louver should not

be set too small, as it will restrict airﬂow and reduce

COOLING and HEATING performance of the unit.

Page 10

Page 12

Operating Instructions

SLEEP operation

Set Temperature

hour

SLEEP Operation While Cooling

SLEEP operation

Set Temperature

8 hours

timer OFF

8 hours

timer OFF

Basic Operation Modes:

Auto Operation:

SLEEP Operation:

hours before SLEEP

DRYING Operation:

LOW .

HEATING Operation:

hour

SLEEP Operation While Heating

Optimal Operation

curtains while heating also

helps keep the heat in

Doors and windows should be kept closed

supplement heating with other appliances.

performance.

function.

the unit.

Page 11

mrcool.com

Page 13

Operating Instructions

Special Functions

Refrigerant Leakage Detection (optional):

Louver Angle Memory Function (optional):

Anti-Mildew Function (optional):

When the unit is turned oﬀ, in COOL, DRY, or AUTO (cool) modes, it will continue to run for about 10 minutes with low fan airﬂow. This is to aid in drying any condensation that has formed inside the unit to prevent mildew growth. Do not restart the air conditioner until the unit is completely oﬀ.

Optimal Operation:

Wireless Smart Control Function:

Clean Air Filter Reminder (optional):

Replace Air Filter Reminder (optional):

Mute Function (optional):

Press the LED LED

LED button on

LED button

mrcool.com

Page 12

Page 14

Operating Instructions

Care and Maintenance

CAUTION

Power supply must be disconnected before attempting any kind of cleaning or service. Before performing

maintenance, turn the power oﬀ to the unit and then

disconnect the power to the circuit at the breaker. Failure to do this could cause electrical shock.

DO NOT use benzene, thinner, polishing powder, or

similar solvents for cleaning. These may cause the plastic to crack and/or deform.

DO NOT clean the unit with excessive amounts of water.

DO NOT touch the metal parts of the unit when

removing the ﬁlter. Injuries can occur when

handling the sharp metal edges.

DO NOT

conditioner. Exposure to water can destroy the insulation, leading to possible electric shock.

use water to clean inside the air

Wipe the unit with a soft dry cloth. If the unit is very dirty, wipe it with a cloth soaked in warm water. DO NOT use bleach or abrasives.

DO NOT use a chemically treated cloth or duster to clean the unit.

touch air freshening (Plasma) ﬁlter for at least

DO NOT

10 minutes after turning oﬀ the unit.

DO NOT clean the unit with combustible cleaning

agents. These could cause ﬁre or deformation.

DO NOT

it to shrink. Allow it to dry in the shade.

wash air ﬁlter with water hotter than 104°F (40°C).

expose the ﬁlter to direct sunlight, it may cause

Page 13

Tab

NOTE: A clogged air ﬁlter can greatly reduce heating and cooling eﬃciency of this unit. It is recommended to clean the

unit every 2 weeks.

Open the front by carefully lifting both ends at the same time.

As you continue lifting, at a certain angle there will be an audible click and the lid will become self-supporting. Some models are equipped with suspension bars that are required to prop the lid open.

Use the ﬁlter tabs to lift ﬁlter slightly upward and then pull it

towards you.

mrcool.com

Page 15

Care and Maintenance

lowering the bottom into place.

Preparation for Extended non-Operation:

Removal

Install

Turn oﬀ the unit. Then, turn oﬀ the power to the

circuit at the breaker. The unit should be the only appliance on this circuit.

The outdoor unit also requires periodic maintenance.

However, it is highly recommended you contact a

qualiﬁed service professional to perform this. Please do

not attempt to do this on your own.

Pre-Season Inspection:

Panel buckles

Replace Batteries in Remote Control

mrcool.com

Page 14

Page 16

Installation Summary - Indoor Unit

Indoor Unit Installation

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 numbers of the indoor unit and the outdoor unit match.

Step 1: Selecting an installation location

choose an appropriate location. The following

location for the unit.

P following standards:

Good air circulation

Noise from the unit will not disturb other people

Strong enough to support the weight of the unit

DO NOT install unit in the following locations:

Near any source of heat, steam, or combustible gas

or clothing

Near any obstacle that might block air circulation

Near a doorway or where outside air may blow directly on indoor unit

In a location subject to direct sunlight

NOTE ABOUT WALL HOLE:

If there is no ﬁxed refrigerant piping:

While choosing a location, be sure that you leave ample room for a wall hole (see the Drill Wall Hole for Connective Piping step on the following pages) for the signal cable and refrigerant piping, which connect the indoor and outdoor units. The default position for all piping is the right-hand side of the indoor unit (while facing the front of the unit). After the piping and signal wire are installed, use the provided neoprene (spray foam can be used instead, if you prefer) to pack the space left in hole, in order to seal it and make it airtight.

Page 15

mrcool.com

Page 17

Indoor Unit Installation

Refer to Fig. 4.2 below to ensure proper distance from walls, ceiling, and ﬂoor when mounting unit:

Minimum Ceiling

Clearance

5.9 in (15 cm)

Minimum Side

Clearance

4.75 in (12 cm)

Fig. 4.1

Place the mounting plate against the wall in

a location meets the guidelines in the Selecting an Installation Location step. Refer to the Mounting Plate Dimensions section for detailed information on mounting plate sizes.

NOTE

A cardboard template of the mounting plate is included to be used as a more manageable way of determining where to mount the mounting plate and drill the wall hole. It can be placed against the wall in place of the actual mounting plate for the previous step (See Fig 4.1).

•

the unit

•

plate

4. Secure the mounting plate to the wall with the

the wall.

NOTE FOR CONCRETE OR BRICK WALLS:

*For Ceilings GREATER than 9 ft.,

recommended distance from ﬂoor

90.55 in (230 cm)

*For Ceilings LESS than 9 ft.,

recommended distance from ﬂoor

78.55 in (200 cm)

You must drill a hole in the wall for the refrigerant

piping, drainage pipe, and signal cable to pass through in order to connect the indoor and outdoor units.

Determine the location of the wall hole based on

the position of the mounting plate. Refer to the Mounting Plate Dimensions (See Fig 4.5) to assist you in determining the optimal position for the hole, based on the type of mounting plate provided with your unit.

Using a core drill, with a 3.54 in (90 mm) diameter, drill a hole in the wall at a slight downward angle, so that the indoor end of the hole is higher than the outdoor end of the hole, by approximately 0.2 in to 0.275 in (5 mm to 7 mm). This will ensure proper water drainage from the indoor unit (See Fig. 4.3).

Insert the protective wall sleeve through the

hole of the inside wall, noting the amount it protrudes from the exterior wall. Then, trim the excess, with a utility knife or a saw, to make it

ﬂush with the exterior wall. This will protect the

edges of the hole and help seal it when you

ﬁnish the installation process (See Fig 4.4).

Minimum Side

Clearance

4.75 in (12 cm)

Fig. 4.2

If the wall is made of brick, concrete, or a 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 anchors.

mrcool.com

CAUTION

When drilling the wall hole, be sure to avoid wires, plumbing, nails, screws, and other sensitive components.

Page 18

Indoor Unit Installation

MOUNTING PLATE DIMENSIONS

In order to ensure that you have ample room to mount the indoor unit, the diagrams to the right

with the following dimensions:

•

Height & Width of mounting plate

Height & Width of indoor unit relative to plate

•

Recommended position of wall hole

•

Relative distances between screw/mounting

•

holes Do not attempt a left rear wall hole.

•

Correct orientation of Mounting Plate

NOTE: Use a level in order to ensure your mounting plate is mounted to the wall with the correct orientation shown above.

Correct Angle to Drill Wall Hole

Indoor

Wall

Outdoor

NOTE REGARDING WALL STUDS

on studs.

marked “US” on the metal bracket.

16.8 in (426 mm)

7.55 in (192 mm)

1.7 in (43 mm)

11.7 in (297 mm)

31.6 in (802 mm)

9.15 in (232 mm)

5.05 in (128 mm)

Series 12K Models

21.77 in (553 mm)

8.6 in (219 mm)

0.6 in (15 mm)

1.7 in (43 mm)

13.2 in (335 mm)

42.5 in (1080 mm)

11.8 in (300 mm)

5.9 in (151 mm)

0.6 in (15 mm)

Series 18K & 24K Models

1.7 in

(43 mm)

Outline of indoor unit

when mounted to plate

1.7 in (43 mm)

Diameter

2.1 in

(53.5 mm)

Outline of indoor unit

when mounted to plate

1.8 in

(47 mm)

Diameter

Drill used to

create wall

hole

Fig. 4.3

Wall Hole Sleeve Installation

Fig. 4.4

0.2 - 0.3in

(5 - 7 mm)

Outline of indoor unit

when mounted to plate

Series 36K Models

Diameter

Fig. 4.5

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 there is not enough room

to connect embedded pipes to the indoor unit, it can be adjusted left or right by 1.25-1.95 in (30-50 mm), depending on the model.

(30-50 mm)

Adjustment range of indoor unit to the left or right

(30-50 mm)

Page 17

mrcool.com

Page 19

Indoor Unit Installation

Step 4: Prepare indoor unit refrigerant piping

The piping of the indoor unit is attached to the back of the unit towards the bottom. It will be covered with insulation, and there will also be a drain pipe with these. This piping will need to be bent and prepared before it can be fed through the wall hole.

NOTE: Refrigerant piping should exit the indoor unit from the right-hand side (Refer to Fig 4.6)

Based on the position of the wall hole, relative to the mounting plate, determine the necessary angle the piping will need to be bent to pass through the wall hole when the unit is mounted to the bracket.

Grip the refrigerant piping at the base of the bend.

Then, slowly, and with even pressure, bend the piping away from the back of the unit roughly 90 degrees. The piping should be sticking straight out from behind the unit once completed (Refer to Fig 4.6).

CAUTION

Be extremely careful not to dent or damage the piping while bending it away from the unit, as

this could negatively aﬀect the performance.

Fig. 4.6

Step 5: Mount the Indoor Unit

In the following steps the indoor unit will now be mounted to the wall bracket and the piping and wires will be fed through the wall hole.

Double-check that the ends of the refrigerant

pipes are sealed (screw on caps are still in place) to prevent any dirt or foreign material from entering the pipes.

Feed the signal wire (should be protected by

conduit) through the wall hole.

Carefully lift the indoor air handler, and slowly

feed the taped bundle of refrigerant pipes and drain hose through the wall hole, as you position it to mount to the wall bracket.

NOTE: Positioning the air handler on to the wall bracket, while feeding the piping

through the wall hole, might be diﬃcult for

a single person to manage. If so, it may be necessary to seek the assistance of another person for this step.

Slightly lean the top of the air handler toward

the wall and hook the top of the indoor unit on the upper hook of the wall mounting plate.

Check that the unit is hooked ﬁrmly on the

mounting plate by applying slight pressure to the left and right-hand sides of the unit. The unit should not jiggle or shift.

Now, you will need to lightly tape the refrigerant

piping and drain pipe together in a bundle, using electrical tape, making sure that the drain pipe is at the bottom. DO NOT tape the ends of the piping (connectors). Refer to Fig 4.7 and the image below for the correct orientation of the piping when taping.

Refrigerant piping

Tape

Drain hose

Fig. 4.7

DRAIN HOSE MUST BE ON BOTTOM

The drain hose must be placed at the bottom of the bundle. If it is not, it could cause the drain pan to overﬂow, which could lead to ﬁre or water damage.

Using even pressure, push down on the

bottom half of the unit. Continue pushing down until the unit snaps onto the hooks along the bottom of the mounting plate.

Again, check that the unit is ﬁrmly mounted to

the wall bracket by applying slight pressure to the left and right-hand sides of the unit.

mrcool.com

Page 18

Page 20

Indoor Unit Installation

Outdoor Unit Installation

Installation Instructions – Outdoor Unit

Step 1: Selecting an installation location

choose an appropriate location. Use the following guidelines to help you select an appropriate location.

P following guidelines:

Meets all spatial requirements shown in

Good air circulation and ventilation

Minimum clearance on the left side of unit: 12 in (30cm)

DO NOT

)

Minimum Clearance above unit:

Minimum clearance

in front of unit:

79in (200cm)

79 in (200cm)

in front

12in (30cm) on left

24in (60cm) above

24 in (60cm)

Minimum Clearance between back of the unit and wall: **Ground Installed:

12 in (30 cm)

**Bracket Installed:

Minimum Clearance

24in (60cm)

on the right side

on right

of the unit: 24 in (60cm)

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

6 in (15 cm)

Fig. 5.1

the unit and will not cause vibration

Noise from the unit will not disturb others

Protected from prolonged periods of exposure to direct sunlight or rain

Page 19

Near any source of combustible gas

In a location that is exposed to large amounts of dust

In a location exposed to a excessive amounts of salty air

In a location that exposes the unit to large amounts of forced water

mrcool.com

Page 21

Outdoor Unit Installation

SPECIAL CONSIDERATIONS FOR EXTREME WEATHER

angle to the direction of the wind. If needed, build a barrier in front of the unit to protect it from extremely heavy winds. Ensure the wind barrier does not block

Fig. 5.2 and

Fig. 5.3 below.

Strong wind

Fig. 5.2

If the drain joint comes with a rubber seal Fig.

the unit.

facing the front of the unit.

If the drain joint does not come with a rubber seal

Fig. 5.3

requently exposed to

Build a shelter above the unit to protect it from the rain or snow. Be careful not to

Step 2: Install drain joint

Strong wind

Base pan hole of outdoor unit

Seal

Drain joint (only use if elevated)

(A) (B)

Fig. 5.4

DRAINAGE IN COLD CLIMATES

bottom of the unit. NOTE: there are two

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

mrcool.com

Page 20

Page 22

Outdoor Unit Installation

TOP VIEW

Air Inlet

Air Outlet

FRONT VIEW

Fig. 5.5

UNIT MOUNTING DIMENSIONS

sizes and the distance between their mounting feet.

Prepare the installation base of the unit according

to the dimensions in the table below, using the illustrations of the unit above (Fig 5.5) as a reference/guide to correspond with the table.

Outdoor Unit Dimensions: Inches (Millimeters)

Width (W) x Height (H) x Depth (D)

31.5 in x 21.8 in x 13.1 in

(800 mm x 554 mm x 333 mm)

33.25 in x 27.63 in x 14.29 in

(845 mm x 702 mm x 363 mm)

DIY-24-HP-C-230B

DIY-36-HP-C-230B

If you are installing the outdoor unit on the ground, or a concrete mounting platform, use the following steps:

chart and illustrations above.

37.21 in x 31.90 in x 16.53 in

(946 mm x 810 mm x 420 mm)

37.21 in x 31.90 in x 16.53 in

(946 mm x 810 mm x 420 mm)

Mounting Dimensions: Inches (Millimeters)

Width (A)

20.24 in

(514 mm)

21.26 in

(540 mm)

26.5 in

(673 mm)

26.5 in

(673 mm)

Put a washer on each of the expansion bolts, then reinstall the the nuts.

Depth (B)

13.39 in

(340 mm)

13.80 in

(350 mm)

15.87 in

(403 mm)

15.87 in

(403 mm)

holes.

Page 21

WHEN DRILLING INTO CONCRETE, EYE PROTECTION IS RECOMMENDED AT ALL TIMES.

mrcool.com

Page 23

Outdoor Unit Installation

If you are installing the unit on a wall-mounted bracket, follow these steps:

Before installing a wall-mounted unit, make sure that the wall is made of solid brick, concrete, or a similarly strong

material.

support at least 4 times the weight of the unit.

The wall must be able to

ATION OF WALL-

MOUNTED UNIT

If allowed, you can install the wall-mounted unit with rubber gaskets to reduce vibration and noise.

the

mrcool.com

Page 22

Page 24

Refrigerant Piping Connection

Step 1: Prepare exterior wall hole

Before the refrigerant piping can be installed and connected to the indoor and outdoor units, some additional steps are required to prepare the exterior.

Install ﬁnishing ring/cap to exterior portion of the

wall hole.

Place your hand on the underside of the piping

coming through the exterior wall hole (from indoor unit), close to the wall. With your other hand, using even pressure, carefully bend the piping downward toward the wall, being mindful not to damage or dent the piping in the process.

Step 2: Unwind Quick Connect® Line Set to necessary length

Use your hands to slowly unwind the copper piping

of one end of the Quick Connect® Line Set. The end you unwind will connect to the indoor unit piping. Only unwind as much as necessary for your application, and allow any excess to remain coiled (Refer to Fig. 6.1).

MINIMUM BEND RADIUS

When bending connective refrigerant piping, it needs to have a minimum bend radius of 4 inches (Refer to Fig 6.1).

CAUTION

Be extremely careful not to dent or damage the piping while bending it down the exterior wall, as

this could negatively aﬀect the performance.

Pack the wall hole with the supplied Neoprene

(or Spray Foam can be used) to seal the hole,

ﬁlling any space that was not taken up by the

refrigerant piping and lines.

If the pipe is repeatedly bent or extended, it will

become hard and diﬃcult to manipulate. Avoid

bending or extending the pipe more than 3 times, or excessively, as it could break.

Carefully unroll to indoor handler connection

Radius

Keep excess coiled

Connect directly to exterior condensor

Page 23

mrcool.com

Page 25

Refrigerant Piping Connection

Step 3: Connect Line Set to Indoor Unit

3.1 Tools needed

NOTE: Depending on the capacity rating of your unit,

(12K, 18K, 24K, 36K) the wrench sizes needed will vary, refer to the table below (the unit uses metric sizes, the standard sizes listed are approximations). Based on the availability of wrenches in some of the sizes needed, the recommended method is to use crescent (adjustable-type) wrenches that

can be adjusted to ﬁt the size each step requires.

Opened-ended wrench sizes needed (1x of each of these)

12K & 18K 24K & 36K

3/4” / 19 mm 3/4“ / 19 mm 7/8” / 22 mm 15/16“ / 24 mm 15/16” / 24 mm 1“ / 26 mm 1” / 26 mm 1-1/8” / 29 mm 1-1/4” / 31 mm

1x HVAC Torque Wrench (if available)

1x Allen key, 5 mm

1x Phillips-head screwdriver

1x leak-detection spray or a soapy water solution (liquid detergent/mix, applied by brush or spray bottle)

3.2 IMPORTANT INFORMATION

PLEASE READ FULLY BEFORE PROCEEDING TO NEXT STEP

DO NOT

Or 2x Crescent (adjustable-type) Wrenches

}

about connecting the refrigerant line connectors

IMPORTANT:

The line sets are designed to only be installed once. The seal within the line set cannot be guaranteed if they are installed more than once. This will void the

warranty. They also contain a compression ﬁtting to seal and do not require a thread sealent (teﬂon

tape, etc.). Using a sealent may actually cause the connection to leak over time.

3.3 Connecting the Quick Connect® Line Set to the piping from indoor unit

Do not remove the plastic seals of the piping coming

from the indoor unit, or the appropriate line set connector, until immediately before you connect them. The plastic seals on each of the connectors should be color-coded to match the seals of the corresponding pipes they are to be connected to.

Align the refrigerant pipes correctly, making sure

the dimensions of the connecting refrigerant pipe match. Unscrew the seals and place the screw connector of the line set pipe just onto the threads of the piping from the indoor unit, and

tighten the ﬁrst few threads by hand.

Always wear work gloves and goggles and use caution when handling refrigerant. Please make sure that refrigerant is never allowed to enter the environment. Improper handling of refrigerant may be harmful to your health.

DO NOT

•

The screw connections may only be tightened using the appropriate open-ended or crescent (adjustable-type) wrench.

mrcool.com

IMPORTANT:

Before you continue, it is essential that you read the following instructions fully and carefully.

Page 24

Page 26

Refrigerant Piping Connection

TORQUE REQUIREMENTS

NOTE: Torque ratings in the table below are to be used if you have access to an HVAC torque wrench. These are available for purchase from online retailers. However, it is possible to complete installation of refrigerant line sets with conventional open-ended/crescent wrenches. It is imperative, however, that you not overtighten the connector, and that once the lines have been fully connected, you follow the steps to check for leaks. If you do

not feel comfortable attempting this, please contact a qualiﬁed HVAC technician.

Using the image below as a guide, and the steps

outlined in this paragraph, you will now tighten the nuts of the screw connectors of the Quick Connect® Line Set to the indoor unit. Using two appropriate sized open-ended wrenches (depending on the dimensions of the connector) or adjustable crescent wrenches, place one of the wrenches on the nut marked “1”, and the other wrench on the nut marked “2,” as shown in the image below. Now, turn the wrench marked “2” in the direction of the rotational arrows, as shown, while holding the other wrench in place. Continue to tighten the connector until snug. NOTE: work

quickly and make sure the screw connectors do not become crooked as you tighten them.

*If an HVAC torque wrench is available: Once the

connector is snug, using the torque wrench, tighten

the connector to the speciﬁed torque rating, listed in

the table above (based on the pipe size).

*If an HVAC torque wrench is NOT available:

Using the two wrenches you used to tighten the connector, once the connector is snug, turn the wrench slightly beyond that point to torque the connector, but do not overtighten it.

Repeat the same process for the second line.

Stamp

Outer Pipe Diameter inch (millimeter)

Maximum

lb·ft (N·m)

N·m

Page 25

mrcool.com

Page 27

Refrigerant Piping Connection

CAUTION

Step 4: Connect Line Set to the Outdoor Unit

shown in the illustration.

Do not remove the plastic seals from the

outdoor unit piping connectors and corresponding refrigerant pipes (line set to be attached) until immediately before you connect them.

IMPORTANT:

Before you continue, it is essential that you read the following instructions carefully.

Using the ﬁrst image below as a guide, starting with

the bottom screw connector, you will now tighten the line set to the outdoor unit. Using two appropriate sized open-ended wrenches (depending on the dimensions of the connector), or adjustable crescent wrenches, place one of the wrenches on the nut marked “1”, and the other wrench on the nut marked “2,” Now, turn the wrench on nut “2” in the direction of the rotational arrow, while holding the other wrench in

place, as seen in the ﬁrst image below. Continue to

tighten the connector until snug. NOTE: work quickly and make sure the screw connectors do not become crooked as you tighten them.

*If an HVAC torque wrench is available: Once the connector is snug, using the torque wrench, tighten

the connector to the speciﬁed torque rating, listed in

the table on the next page (based on the pipe size).

*If an HVAC torque wrench is NOT available: Using the two wrenches you used to tighten the connector, once the connector is snug, then turn the wrench slightly beyond that point to torque the connector, but do not overtighten it.

Repeat the same process for the top screw connector, using the second image below as a guide.

NOTE:

to connect the line set.

Align the refrigerant pipes so they line up with

the corresponding valves and have enough slack. NOTE: The refrigerant pipes must be

connected to the valves with as little stress as possible. Unscrew the plastic seals and

place the screw connector of the refrigerant line just onto the threads of the outdoor unit,

tightening the ﬁrst few threads by hand.

IMPORTANT

The coupling of the outdoor unit uses tapping rings, if you disconnect and reconnect the refrigerant pipes, it could cause it to leak. This will also void the warranty.

NOTE:

Keep excess refrigerant hose coiled. Wrap with protective tape and store behind the condenser in

a horizontal position (ﬂat with the ground).

mrcool.com

Page 26

Page 28

Refrigerant Piping Connection

TORQUE REQUIREMENTS

Excessive force can break the nut or damage the refrigerant piping. You must not exceed

torque

versus a HVAC torque wrench) and that a socket style wrench cannot be used here.

information) . If you do not feel comfortable attempting this, please contact a qualiﬁed HVAC

technician.

requirements shown in the table below.

Stamp

Outer Diameter of Pipe

inch (millimeter)

lb·ft (N·m)

N·m

N·m N·m

N·m

lb·ft (N·m)

N·m

Page 27

mrcool.com

Page 29

Refrigerant Piping Connection

Step 5: Opening the refrigerant valves of the outdoor unit

Using the images below as a guide, repeat the same

Using the images below as a guide, remove the cover

on the top valve, using a 19 mm open-ended wrench or a crescent (adjustable-type) wrench. Then, insert a 5 mm Allen key and open the valve by turning it counter-clockwise as far as it will go. DO NOT force it. The valve is now open. Screw the cover back onto the top valve and tighten it well to ensure that it is properly sealed.

process for the bottom valve. Remove the cover on the bottom valve, using a 19 mm open-ended wrench or a crescent (adjustable-type) wrench. Then, insert a 5 mm Allen key and open the valve by turning it counter-clockwise as far as it will go. DO NOT force it. Screw the cover back onto the bottom valve and tighten it well to ensure that it is properly sealed.

CAUTION

If the valves are not fully opened, it could cause the system to malfunction and suﬀer damage.

After completing steps 1 and 2, you will now need to check all of the piping connections (at indoor unit and

outdoor unit) for leaks. You can do this by using leak detection spray, or applying a soapy water solution (liquid

detergent/water mixture) to the connection via a spray bottle or brush. If any bubbles begin to form, that indicates there is a leak, and the connection needs to be retightened. Tighten the connection and recheck it for leaks. Refer to Electrical and Gas Leaks Checks section of this manual for more information.

IMPORTANT:

You will be asked to check for leaks at the piping connections multiple times throughout the following steps of the installation, because the pressures within the lines will change once the unit is turned on and this could reveal leaks not present during the initial check. These are imperative to make sure your connections are not allowing refrigerant to escape the system. When checking for leaks, if any bubbles form, it indicates the system has a leak and the screw connector needs to be retightened. For more information about checking for leaks, please refer to the Electrical and Gas Leak Checks section of the manual.

mrcool.com

Page 28

Page 30

Refrigerant Piping Connection

Step 6: Wrap piping connections

In this step you will wrap and insulate the exposed line connections coming from the indoor air handler.

IMPORTANT

Do not complete these steps until all of the refrigerant piping connections have been checked for leaks.

Wrap the connectors at the indoor air handler tightly with the supplied sound deadening pads.

Refrigerant piping

Non-Adhesive U.V. Tape

Drain hose

Now, place the supplied insulation material over the connectors and exposed refrigrant piping

Now you will wrap the insulation, refrigerant piping, and

drain hose together tightly using the supplied Non-adhesive U.V. tape. The drain pipe will need to be at the bottom of the bundle (Refer to Fig. 6.2). DO NOT wrap

the end of the drain hose

Fig. 6.2

If you would like the exterior piping on the side of your home to have a sleeker, more attractive look and add some extra protection in the process, you can purchase a MRCOOL LineGuard® Line Set Cover. This will encase your refrigerant piping and lines, protecting them from harsh weather conditions and sun exposure, which will extend the life of your system. These covers are available in various

sizes to ﬁt your particular application.

Page 29

mrcool.com

Page 31

Refrigerant Piping Connection

Step 7: Connect Drain Pipe

In this step you will connect the drain hose extension to the drain hose exiting from the indoor unit that is within the piping bundle you wrapped in the previous steps.

Securely connect the drain hose extension to the

drain piping from the indoor unit.

Make sure there are NO

kinks or dents in the

hose to ensure proper

drainage.

Fig. 4.5a

NOT CORRECT

KINKS in the drain hose

will create water traps.

Using example Fig. 4.5a as a guide, make sure

your drain pipe is run in a similar manner. The other examples in Fig 4.5 represent things you should avoid when installing your drain pipe.

Remove the air ﬁlter from the indoor unit and

pour a small amount of water into the drain pan to ensure that the water exits the bottom

of the unit and ﬂows through the drain and

drain pipe smoothly.

NOTE ON DRAIN HOSE PLACEMENT

Make sure to arrange the drain hose correctly

according to Fig. 4.5a.

DO NOT

DO NOT put the end of drain hose in water

or a container that will collect water.

ENSURE UNUSED DRAIN HOLE IS PLUGGED

To prevent unwanted leaks, be sure that the

factory installed hollow center rubber plug is installed in the unused drain hole.

kink the drain hose.

create a water trap.

Fig. 4.5b

NOT CORRECT

DENTS in the drain hose

will create water traps.

Fig. 4.5c

NOT CORRECT

DO NOT place the end

of the drain hose in

water or in containers

that collect water.

This will prevent proper drainage.

Fig. 4.5d

mrcool.com

Page 30

Page 32

Refrigerant Piping Connection

Wrapped piping with U.V. Tape

Quick Connect connections

Sound Deadening Pads to wrap connections once connected and checked for leaks.

Drainage Pipe

Refrigerant Piping

Signal Cable

(inside conduit)

Coiled & Wrapped excess refrigerant line

Outdoor Unit (Exterior / Condenser)

BEFORE PERFORMING ELECTRICAL WORK, READ THESE REGULATIONS

All wiring must comply with local and national electrical codes.

2. All electrical connections must be made according to the

the panels of both the indoor and outdoor units.

If there is a serious safety issue with the power supply, stop work immediately. Explain your

to the client, and refuse to install the unit until the safety issue is properly resolved.

Electrical Connection Diagram

located on

7. Do not connect another appliance to the same circuit as the unit.

8. Make sure to properly ground the unit.

Do not allow wires to touch or rest against the refrigerant tubing, compressor, or any other moving

10.

part within the unit.

11.

combustible materials.

Page 31

mrcool.com

Page 33

Electrical Connections

Connect signal and power cables

A comprehensive wiring diagram is printed on the inside of the wiring cover.

E G L K N

general conventions.

below.

WIRE CONNECTING DIAGRAM (12K Unit Only)

OUTDOO UNIT TE MIN L

2 L N1

Y/G

RED

TO INDOO UNIT

WIRES

This is dangerous and can cause the air conditioning unit to malfunction. Make sure you clearly distinguish the Live (”L”) Wires from the other wires.

BLACK

WHITE

L N

115

POWER SUPPLY

Fig. 7.1

OUTDOO UNIT TE MIN L

2 L1L21

Y/G

RED

TO INDOO UNIT

WIRES AND TERMINALS ARE NUMBERED TO

CORRESPOND WITH ONE ANOTHER AS SHOWN BELOW.

BLACK

WHITE

L1 L2

208/ 230

POWER SUPPLY

All wiring must be performed in accordance with the wiring diagrams

the images shown here.

mrcool.com

Page 32

Page 34

SELECT THE CORRECT CABLE

Electrical Connections

• See table below for gauge requirements

Minimum Wire Gauge

Model Series

24K

36K

ALL WIRING MUST BE INSTALLED STRICTLY IN ACCORDANCE WITH THE WIRING DIAGRAM LOCATED AS SHOWN IN FIG 7.2.

for Power Cables

Appliance

Amps(A)

AWG

Outdoor Unit Wiring Diagram

Cover

is located on

wire cover on

Fig. 7.2

NOTE ABOUT FUSE SPECIFICATIONS

designed with a fuse to provide overcurrent

printed on the circuit board.

EXAMPLE

or metal parts.

screw it in place.

EXAMPLE Outdoor unit:

Page 33

mrcool.com

Page 35

Refrigerant Piping Connection

Manual.

BEFORE TEST RUN

NOTE:

DURING TEST RUN

IF ELECTRICAL LEAKAGE IS DETECTED

WARNING – RISK OF ELECTRIC SHOCK

ALL WIRING MUST BE INSTALLED BY A LICENSED ELECTRICIAN AND COMPLY WITH LOCAL, STATE, AND NATIONAL ELECTRICAL CODES.

There are two diﬀerent methods to check for

gaseous leaks.

Soap and Water Method

Using a soft brush or spray bottle, apply a soapy water solution to all of the pipe connection points of the indoor and outdoor units, watching to see if any bubbles form. The presence of bubbles indicates there is a leak.

Leak Detector Method

If using a leak detector, refer to the device’s operation/instruction manual for proper usage instructions.

NOTE:

AFTER PERFORMING GAS LEAK CHECKS

points DO NOT leak, replace the valve cover on the outside unit and wrap and insulate the piping connections of the indoor unit.

mrcool.com

Page 34

Page 36

Test Run

Before Test Run

Refrigerant Piping Connection

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

•

the electrical system is safe and operating properly

•

not leaking

•

pressure) valves are fully open

Test Run Instructions

You should perform the for at least 30 minutes.

–

No electrical leakage

Unit is properly grounded

properly covered

Indoor and outdoor units

are solidly installed

Wall Penetration Sleeve is

packed airtight

do not leak

Water drains properly

from drain hose

PASS/FAIL

Outdoor (2):

Indoor (2):

2. Press the button on the remote

controller to turn it on.

3. Press the button to scroll through the

• – Select lowest possible temperature

• – Select highest possible temperature

insulated

function properly

Indoor unit louvers rotate

properly

Indoor unit responds to

remote control

Page 35

mrcool.com

Page 37

DOUBLE-CHECK PIPE CONNECTIONS

During operation, the pressure of the refrigerant circuit/piping will increase. This may reveal leaks that were not present during your initial leak check. Take time during the Test

section for instructions.

operating temperature.

Test Run

Manual Control Button

IF AMBIENT TEMPERATURE IS BELOW

If the ambient temperature is below 63°F (17°C), the remote controller cannot be used to turn on the COOL function. In this instance, you will need to use the MANUAL CONTROL BUTTON to test the COOL function. Follow the steps below to access this function:

Lift the front panel of the indoor unit,

and continue to raise it until it clicks into place and becomes self-supporting.

The MANUAL CONTROL BUTTON is located on the right-hand side of the unit (Refer to Fig 9.1). Press it 2 times to select the COOL function.

Perform Test Run as normal.

Fig. 9.1

THANK YOU

Thank you for purchasing a MRCOOL ductless mini-split heating and air conditioning product.

MRCOOL is a young, family-owned company, so we are truly thankful you trusted us with your business. Should you ever need technical support, or just have questions about your MRCOOL product, or any of the

other products we oﬀer, please do not

hesitate to call us at (270)-366-0457.

Also, if you can spare a few minutes today, and leave a review of your new MRCOOL® product on the partner site where you purchased it, it would really mean a lot to us. We are always looking for ways to improve, and real reviews, from actual customers like yourself, are vital and invaluable to our growing company.

mrcool.com

Thank you for being a valued customer!

Page 36

Page 38

The following events may occur during normal operation, and may not indicate a malfunction.

Symptom Cause

Operation is delayed after restart

The protection circuit will prevent the compressor from operating for roughly 3 minutes, after a sudden ON-OFF operation of the power supply, in order to prevent a blowout of the fuse.

Fan

Heating operation stops suddenly and

Mist coming out of

Low volume sounds

air conditioner

Dust from

appens in heating mode :

--prevents cold air blowing onto occupants when heating operation starts

--perform automatic defrosting operation

--perform low temperature heating operation

T mode, the indoor unit temporarily stops for a maximum of

10 minutes to perform the automatic defrosting operation.

In mode, a mist generated by condensation formed with sudden cooling process may be emitted.

Mis

t may generate due to moisture from defrosting process when the air

issing sound -- during operation or immediately after stopping the air

Squeaking sound -- normal expansion and contraction of plastic and metal parts caused by temperature change during the operation.

shing air -- when louver resets its position.

used for a long time.

Emits a peculiar odor

Operation is erratic, unpredictable or unresponsive

Page 37

anges to fan only

smells generated from interior textile, furniture, or cigarette smoke absorbed into the air conditioner may be emitted. If not the case, contact a local dealer or your installation contractor.

ure reaches the temperature setting of the remote control.

If not the case, contact a local dealer or your installation contractor.

Interference from cell phone towers and remote boosters may cause the unit to malfunction.

Turn power oﬀ at the unit and at the circuit breaker, wait 10 seconds and

turn power back on

Press the ON/O

mrcool.com

Page 39

Symptom Diagnostic

-- Is there a power failure?

Unit will not operate

-- Is the timer operating?

batteries used in the remote controller exhausted?

batteries used in the remote controller installed properly?

temperature and mode settings correct?

Poor cooling or

Indicator lamps

Error code appears

P1,P2,P3.....

or F1, F2,F3.....

windows or doors left opened?

-- Is direct or strong sunlight shining into the room in cooling operation?

re other heat generating devices (such as a computers operating),

or too many people in the room in cooling operation?

become lower.

The unit may stop operation or continue to run in a safety condition

(depending on the model). The fault may be recovered automatically by waiting for about 10 minutes. If this does not resolve the fault, disconnect the power and then reconnect it. If the problem still exists after the power has been restored, disconnect the power and contact the nearest customer service center.

NOTE: The wire colors of this series/model may diﬀer from that of previous models, other series, and general wiring conventions. All wiring must be performed in accordance with the wiring diagrams, shown in Section 7 (Refer to Fig. 7.1), and associated images. Wires and terminals are numbered to match accordingly.

WARNING

· Signal/power cable is damaged or abnormally warm

· Burning odor

Loud or abnormal sounds

A power fuse or circuit breaker trips frequently

Water or other objects fall into or out of the unit

mrcool.com

DO NOT ATTEMPT TO CORRECT THESE ITEMS YOURSELF!

PROFESSIONAL IMMEDIATELY

Page 38

Page 40

Indoor Unit Error Display

O（light）  X（off）  （flash）

peration LEDTimer LED

isplay

ED STATUS

1 time

times

3 times

4 times

5 times

6 times

7 times

2 times

3 times

4 times

X E

3/E88

X E

O F

Indoor unit EEPROM parameter error

Indoor / outdoor units communication error **

Zero-crossing signal detection error

Indoor fan speed has been out of control

Indoor room temperature sensor T1 open circuit or short circuit

vaporator coil temperature sensor T2 open circuit or

short circuit

Refrigerant leakage detection

Outdoor ambient temperature sensor T4 open circuit or short circuit

Condenser coil temperature sensor T3 open circuit or short circuit

Compressor discharge temperature sensor T5 open circuit or short circuit

5 times

6 times

1 time

2 times

3 times

5 times

general conventions.

O F

Outdoor unit EEPROM parameter error

Outdoor fan speed has been out of control

IPM malfunction or IGBT over-strong current protection

Over voltage or over low voltage protection

High temperature protection of compressor top diagnosis and solution (only for 9k,12k models)

Inverter compressor drive error

Discharge temp sensor

USB Smart Controller module not installed

. Wires and terminals are numbered to match accordingly.

Page 39

mrcool.com

Page 41

™

DIY

Consult with the sales agency or manufacturer for details.

E Star

Series