Midea DLCSRAH12AAJ, DLCSRAH09AAK, DLCSRAH12AAK, DLCSRAH09AAJ, DLCSRAH24AAK Installation Instructions Manual

DLCSRA

INSTALLATION INSTRUCTIONS

Outdoor Unit Ductless Split System − Sizes 09 to 36

NOTES:

Read the entire instruction manual before starting the installation.
Images are for illustration purposes only. Actual models may differ

slightly.

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS 2.............................

PARTS LIST 3...........................................

SYSTEM REQUIREMENTS 4...............................

WIRING 5...............................................

DIMENSIONS − OUTDOOR 6..............................

CLEARANCES − OUTDOOR 7.............................

INSTALLATION TIPS 8....................................

OUTDOOR UNIT INSTALLATION 8.........................

ELECTRICAL DATA 11...................................

CONNECTION DIAGRAMS 11.............................

SYSTEM VACUUM AND CHARGE 12.......................

START−UP 13............................................

TROUBLESHOOTING 13..................................

Specifications subject to change without notice.

SAFETY CONSIDERATIONS

Installing, starting up, and servicing air−conditioning equipment can be
hazardous due to system pressures, electrical components, and
equipment location (roofs, elevated structures, etc.).

Only trained, qualified installers and service mechanics should install,
start−up, and service this equipment.

Untrained personnel can perform basic maintenance functions such as
cleaning coils. All other operations should be performed by trained
service personnel.

When working on the equipment, observe precautions in the literature
and on tags, stickers, and labels attached to the equipment.

Follow all safety codes. Wear safety glasses and work gloves. Keep
quenching cloth and fire extinguisher nearby when brazing. Use care in
handling, rigging, and setting bulky equipment.

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
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 identifies 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.

. When

!

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.

!

WARNING

!

WARNING

EXPLOSION HAZARD

Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.

Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors. Pressurized
mixtures of air or gases containing
oxygen can lead to an explosion.

CAUTION

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.

Do not bury more than 36 in. (914 mm) of refrigerant pipe
in the ground. If any section of pipe is buried, there must be
a 6 in. (152 mm) vertical rise to the valve connections on
the outdoor units. If more than the recommended length is
buried, refrigerant may migrate to the cooler buried section
during extended periods of system shutdown. This causes
refrigerant slugging and could possibly damage the
compressor at start−up.

2 32801000801

Specifications subject to change without notice.

PARTS LIST

Table 1—Parts List

Part No. Part Name Qty.

1 Outdoor unit 1

- Literature package including installation instructions and warranty 1

- Grommet to help fix the outdoor unit (helps with vibration prevention during operation) 4

- Drain Joint 1

- Drain Hose 1

■ Outdoor

1

Fig. 1 - Parts List

NOTES:

If the outdoor unit is higher than the indoor unit, prevent rain from flowing into the indoor unit along the connection pipe by making a downward arc in the
connection pipe before it enters the wall to the indoor unit. This will ensure that rain will drip from the connection pipe before it enters the wall.
Piping and the interconnecting wiring are field supplied.
Figure 1 is only a sketch. Different models may differ slightly.

T able 2 lists the units covered in this document.

Table 2—Unit Sizes

SYSTEM TONS kBTUh VOLTAGE - PHASE OUTDOOR MODEL

0.75 9,000 115-1 DLCSRAH09AAJ

1.00 12,000 115-1 DLCSRAH12AAJ

0.75 9,000 208/230-1 DLCSRAH09AAK

1.00 12,000 208/230-1 DLCSRAH12AAK

1.50 18,000 208/230-1 DLCSRAH18AAK

2.00 24,000 208/230-1 DLCSRAH24AAK

2.50 30,000 208/230-1 DLCSRAH30AAK

3.00 36,000 208/230-1 DLCSRAH36AAK

32801000801 3

Specifications subject to change without notice.

SYSTEM REQUIREMENTS

Allow sufficient space for airflow and service of the unit. See Fig. 3 for the required minimum distances between the unit, walls or ceilings.

Piping
IMPORTANT: Both refrigerant lines must be insulated separately.

S Table 3 contains piping information for the product covered within this document.

T able 3—Piping And Refrigerant Information

System Size

Min. Piping Length ft.(m) 9.8 (3) 9.8 (3) 9.8 (3) 9.8 (3) 9.8 (3) 9.8 (3) 9.8 (3) 9.8 (3)

Standard Piping Length

Max. Outdoor - indoor height
difference (OU higher than IU)

Max. Outdoor - indoor height
difference (IU higher than OU)

Max. Piping Length with no
additional refrigerant charge per
System (Standard Piping length)

Piping

Total Max. Piping Length per
system

Additional refrigerant charge
(between Standard – Max piping
length)

Suction Pipe
(size - connection type)

Liquid Pipe
(size - connection type)

Refrigerant Type Ty pe R410A R410A R410A R410A R410A R410A R410A R410A

ft.(m)

ft.(m)

ft.(m)

ft.(m) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5)

ft.(m) 82 (25) 82 (25) 82 (25) 82 (25) 98 (30) 98 (30) 164(50) 213(65)

Oz/ft

(g/m)

In

(mm)

In

(mm)

9K

(115V)

24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5) 24.6 (7.5)

33 (10) 33 (10) 33 (10) 33 (10) 66 (20) 66 (20) 82(25) 98(30)

33 (10) 33 (10) 33 (10) 33 (10) 66 (20) 66 (20) 82(25) 98(30)

0.16(15) 0.16(15) 0.16(15) 0.16(15) 0.16(15) 0.32(30) 0.32(30) 0.32(30)

3/8 (9.52) 1/2 (12.7) 3/8 (9.52) 1/2 (12.7) 1/2 (12.7) 5/8 (15.9) 5/8 (15.9) 5/8 (15.9)

1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)

12K

(115V)9K(208/230V)

12K

(208/230V)

18K

(208/230V)

23K

(208/230V)

30K

(208/230V)

36K

(208/230V)

Heat Pump Models Charge
Amount

Refrigerant

All outdoor units have an electronic expansion valve to manage the refrigerant flow of the fan coil connected.

Oz’s

39.8(1.1) 42.3(1.15) 52.9(1.5) 52.9(1.5) 68.78(1.95) 91.7(2.6) 97 (2.75) 119.9(3.4)

(kg)

4 32801000801

Specifications subject to change without notice.

WIRING

All wires must be sized per NEC (National Electrical Code) or CEC
(Canadian Electrical Code) and local codes. Use Electrical Data table
MCA (minimum circuit amps) and MOCP (maximum over current
protection) to correctly size the wires and the disconnect fuse or
breakers respectively.

Recommended Connection Method for Power and Communication
Wiring:

The main power is supplied to the outdoor unit. The field supplied 14/3
stranded wire with ground with a 600 volt insulation rating,
power/communication wiring from the outdoor unit to indoor unit
consists of four (4) wires and provides the power for the indoor unit.
T wo wires are line voltage AC power, one is communication wiring (S)
and the other is a ground wire. Wiring between indoor and outdoor unit
is polarity sensitive. The use of BX wire is NOT recommended.

If installed in a high Electromagnetic field (EMF) area and
communication issues exists, a 14/2 stranded shielded wire can be used
to replace L2/N and (S) between outdoor unit and indoor unit landing
the shield onto ground in the outdoor unit only.

!

CAUTION

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.

Wires should be sized based on NEC and local codes.

!

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage
or improper operation.

Be sure to comply with local codes while running wire from
the indoor unit to the outdoor unit.

Every wire must be connected firmly. Loose wiring may cause
the terminal to overheat or result in unit malfunction. A fire
hazard may also exist. Ensure all wiring is tightly connected.

No wire should touch the refrigerant tubing, compressor or
any moving parts.

Disconnecting means must be provided and shall be located
within sight and readily accessible from the air conditioner.

Connecting cable with conduit shall be routed through the
hole in the conduit panel.

CAUTION

32801000801 5

Specifications subject to change without notice.