MrCool MAC13018 User manual

For 13 SEER R410A Unitary

Ducted Split AC & Heat Pump

Residential Air Conditioners & Heat Pumps

Installation Manual

Thank you for choosing Residential Air Conditioners & Heat Pumps, please read this

Installation manual carefully before operation and retain it for future reference.

MRCOOL reserves the right to interpret this manual which will be subject to any change due

to product improvement without further notice.

Contents

Safety Considerations ...................................................................................1

1. Unit Parts Arrangement .............................................................................2

2. Physical Dimension ...................................................................................3

2.1 Outdoor Unit ..........................................................................................3

2.2 Installation Clearance Data ...................................................................5

2.3 Units Installation ....................................................................................5

2.4 Installation Recommendations .............................................................6

3. Brazing Connections .................................................................................7

3.1 Preparation the Line .............................................................................7

3.2 Cap and Core Removal.........................................................................8

3.3 Attach Gauge.........................................................................................8

3.4 Braze Line Set.......................................................................................8

3.5 Preparation for Next Step......................................................................9

4. Check Piston .............................................................................................9

5. Operating Gauge Set and Service Valves ...............................................10

5.1 Torque Requirements ..........................................................................10

5.2 Using Manifold Gauge Set ..................................................................10

5.3 Operating Service Valves ...................................................................10

5.4 Operating Angle Type Service Valve ...................................................10

5.5 To Access Service Port........................................................................ 11

5.6 Reinstall Stem Cap.............................................................................. 11

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5.7 Install Liquid Line Filter Drier Indoor ................................................... 11

6. Recovering Refrigerant from Existing System.........................................12

6.1 Disconnect Power ...............................................................................12

6.2 Connect Manifold Gauge Set ..............................................................12

6.3 Recovering Refrigerant .......................................................................12

6.4 Leak Test Line Set and Indoor Coil......................................................13

6.5 Evacuating Line Set and Indoor Coil ...................................................14

7. Electrical..................................................................................................15

7.1 Size Circuit And Install Disconnect Switch ..........................................16

7.2 Install Thermostat ................................................................................16

7.3 Unit Low Voltage Connections ............................................................16

7.4 Unit High Voltage Connections............................................................17

8. System Refrigerant..................................................................................21

8.1 Gauge Set (Cooling Only) ...................................................................21

8.2 Gauge Set (Heat Pump) .....................................................................22

8.3 Weigh In ..............................................................................................23

9. Unit Control............................................................................................27

9.1 Mainboard Description ......................................................................27

9.2 Terminal Description..........................................................................28

9.3 Control Flowchart ..............................................................................29

9.4 Error Analysis ....................................................................................30

9.5 Setting on Defrost Control PCB (for Heat Pump unit only) ...............33

9.6 Manually Defrost Cycle ....................................................................33

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Safety Considerations

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion,

fire, electrical shock, or other conditions which may cause death, personal injury, or property

damage. Instructions for installation and use of this product are provided by the manufacturer.

Installation must be performed in accordance with the requirements of NEC and CEC by qualied

installer or agency only. The qualified installer or agency must use factory--authorized kits or

accessories when modifying this product. Refer to the individual instructions packaged with the kits

or accessories when installing. Follow all safety codes. Wear safety glasses, protective clothing,

and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available.

Read these instructions thoroughly and follow all warnings or cautions included in literature and

attached to the unit. Consult local building codes and National Electrical Code (NEC) for special

requirements. Recognize safety information. This is the safety--alert symbol .When you see this

symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

Understand these signal words; DANGER, WARNING, and CAUTION. These words are used with

the safety--alert symbol. DANGER identies the most serious hazards which will result in severe

personal injury or death. WARNING signifies hazards which could result in personal injury or

death. CAUTION is used to identify unsafe practices which may result in minor personal injury or

product and property damage. NOTE is used to highlight suggestions which will result in enhanced

installation, reliability, or operation.

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before installing, modifying, or servicing system,main electrical disconnect switch must be in

the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a

suitable warning label.

This product must not be disposed together with the domestic waste.

This product has to be disposed at an authorized place for recycling of

electrical and electronic appliances.

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1. Unit Parts Arrangement

Cooling Only Condensing Unit

Low pressure switch

High pressure switch

Compressor harness

Compressor

Filter

Liquid line service valve

Vapor line service valve

Fig.1

Heat Pump Condensing Unit

High pressure switch

Low pressure switch

Revesing valve

Compressor harness

Compressor

Throttle

Nozzle for adding freon

Liquid line service valve

Filter

Vapor line service valve

Fig.2

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2. Physical Dimension

2.1 Outdoor Unit

Fan motor

Axial flow fan

Compressor

Fig.3—Outdoor Unit

Table 1—Dimension of Outdoor Unit

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Unit: Inch (mm)

MODEL

DIMENSION

H D W

MAC13018 24"(610) 21-1/2"(546) 21-1/2"(546)

MAC13024 24-1/2"(620) 24"(610) 24"(610)

MAC13030 29"(735) 24"(610) 24"(610)

MAC13036 29"(735) 28"(710) 28"(710)

MAC13042 29"(735) 28"(710) 28"(710)

MAC13048 29"(735) 28"(710) 28"(710)

MAC13060 33-1/2"(850) 29-1/2"(750) 29-1/2"(750)

MHP13018 24-1/2"(620) 24"(610) 24"(610)

MHP13024 24-1/2"(620) 24"(610) 24"(610)

MHP13030 29"(735) 28"(710) 28"(710)

MHP13036 29"(735) 28"(710) 28"(710)

MHP13042 29"(735) 28"(710) 28"(710)

MHP13048 33-1/2"(850) 28"(710) 28"(710)

MHP13060 33-1/2"(850) 29-1/2"(750) 29-1/2"(750)

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2.2 Installation Clearance Data

>1000mm

>1000m

（40inch）

（32inch）

（120inch）

（40inch）

>800mm

>3000mm

>1000mm

Floor

Fig.4

2.3 Units Installation

2.3.1 Installation Positions of Condensing Units

● Outdoor Unit must be xed on stable and solid surface of oor.

● Don’t install Outdoor Unit under window or between buildings, and prevent the operation

noise from room.

● There should be no obstructions at both air inlet and outlet of indoor and outdoor units for

maintaining well air ventilation.

● When installing indoor unit, make sure that the hanging parts at top are strong enough to

stand the weight of unit.

2.3.2 Matters Need Attention

● Before installation, make sure that the power supply comply with nameplate and check the

security of the power supply.

● Do not use or place combustible and explosive gas or liquid near the air conditioner.

● Do not attempt to install Air Conditioner by yourself to guarantee the air Conditioner can be

permanent use.

● In the event of malfunction(burning smell, etc.),stop operation immediately and turn off the

power switch.

● Do not insert ngers or objects into the outlet port or inlet grillers.

● Do not check or repair the air Conditioner when it is running.

● Do not sprinkle water on the air Conditioner or operate it with wet hands.

● Do not climb or place objects on the air conditioner.

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2.4 Installation Recommendations

NOTE: In some cases noise in the living area has been traced to gas pulsations from improper

installation of equipment.

1). Locate unit away from windows, patios, decks, etc. where unit operation sound may disturb

customer.

2). Ensure that vapor and liquid tube diameters are appropriate for unit capacity.

3). Run refrigerant tubes as directly as possible by avoiding unnecessary turns and bends.

4). Leave some slack between structure and unit to absorb vibration.

5). When passing refrigerant tubes through the wall, seal opening with RTV or other pliable

silicon--based caulk.(See Fig. 5.)

6). Avoid direct tubing contact with water pipes, duct work, oor joists, wall studs, oors, and

walls.

7). Do not suspend refrigerant tubing from joists and studs with a rigid wire or strap which comes

in direct contact with tubing. (See Fig. 5.)

8). Ensure that tubing insulation is pliable and completely surrounds vapor tube.

9). When necessary, use hanger straps which are 1 in. wide and conform to shape of tubing

insulation. (See Fig. 5.)

10). Isolate hanger straps from insulation by using metal sleeves bent to conform to shape of

insulation.

When outdoor unit is connected to factory--approved indoor unit, outdoor unit contains system

refrigerant charge good for 25 ft.

For proper unit operation, check refrigerant charge using charging information located on

control box cover and/or in the Check Charge section of this instruction.

NOTE: Avoid contact between tubing and structure

OUTDOOR WALL

CAULK

INDOOR WALL

LIQUID TUBE

INSULATION

VAPOR TUBE

JOIST

HANGER STRAP

(AROUND VAPOR

TUBE ONLY)

THROUGH THE WALL

INSULATION

VAPOR TUBE

LIQUID TUBE

SUSPENSION

1”MIN.

Fig.5 – Connecting Tubing Installation

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3. Brazing Connections

3.1 Preparation the Line

Refer to Table 2 for eld tubing diameters. The pipe must remain round. Do not crimp end of

the line.

Table 2. Refrigerant Line Set Inches (mm)

Model

Valve Field Connections

Liquid Line Vapor Line

MAC13018

3/8 in. (9.5 mm)

5/8 in. (16 mm)

MHP13018

MAC13024

MHP13024

MAC13030

3/4 in. (19 mm)

MHP13030

MAC13036

MHP13036

MAC13042

7/8 in. (22 mm)

MHP13042

MAC13048

MHP13048

MAC13060

1/2 in. (12 mm) 1-1/8 in. (28 mm)

MHP13060

Line set size matches

service valve connection Do not crimp service valve connector

whenpipe is smaller than connection

Fig.6

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