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Mitsubishi Electric MS09NW*2 User Manual

Mitsubishi Electric MS09NW*2
21 pages
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TECHNICAL & SERVICE MANUAL
DUCTLESS SPLIT-TYPE AIR CONDITIONERS
CONTENTS
1. FEATURES·························································2
2. TECHNICAL CHANGES ····································3
3. PART NAMES AND FUNCTIONS······················3
4. SPECIFICATIONS ··············································4
5. DATA···································································5
6. OUTLINES AND DIMENSIONS ·························9
7. WIRING DIAGRAM ··········································10
8. REFRIGERANT SYSTEM DIAGRAM ··············11
9. TROUBLESHOOTING······································12
10. DISASSEMBLY INSTRUCTIONS·····················14
11. PARTS LIST······················································17
12. OPTIONAL PARTS···········································18
Wireless type
Models
MS09NW2 •MUM18NW
No.OB202
The Slim Line.
From Mitsubishi Electric.
L
I
S
T
E
D
R
NOTE :For parts list, please refer to the following manuals.
MS09NW OB192
MUM18NW
LCD Wireless
remote controller
LCD Wireless
remote controller
MS09NW MS09NW
OB202-1.qxp 26/9/97 11:07 AM Page 1
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Mitsubishi Electric MS09NW*2 Specifications

General IconGeneral
Cooling Capacity2.5 kW
Heating Capacity3.2 kW
Power Supply220-240 V, 50 Hz
Indoor Unit Weight9.0 kg
Indoor Unit Dimensions (W x H x D)798 x 295 x 223 mm

Summary

1 FEATURES

1.SPACE-SAVING LAYOUT

Two indoor units served by a single outdoor unit in a neat, space-saving layout.

2.FLEXIBLE INSTALLATION OF INDOOR UNITS

Each indoor unit connects to piping up to 49 feet, offering installation freedom.

3.AUTO-RESTART FUNCTION

Restarts equipment automatically after power outage in the previous mode.

HIGH PERFORMANCE ROTARY COMPRESSOR

Advanced design for lower operating costs and longer service life.

2 TECHNICAL CHANGES

3 PART NAMES AND FUNCTIONS

OUTDOOR UNIT

Diagram and labels for the outdoor unit components and connections.

4 SPECIFICATIONS

INDOOR UNIT MODEL

Specifications for the MS09NWX2 indoor unit model.

OUTDOOR UNIT MODEL

Specifications for the MUM18NW outdoor unit model.

REMOTE CONTROLLER

Details on the wireless remote controller specifications.

REFRIGERANT PIPING

Specifications for refrigerant pipe size and connection methods.

5 DATA

1.PERFORMANCE DATE (ONE INDOOR UNIT WITH ONE OUTDOOR UNIT)

Performance data table for single indoor unit operation under various conditions.

2) COOLING CAPACITY CORRECTIONS

Correction factors for cooling capacity based on refrigerant piping length.

1.PERFORMANCE CURVE (ONE INDOOR UNIT WITH ONE OUTDOOR UNIT)

Graphs showing cooling capacity and power consumption vs. temperatures.

3.CONDENSING PRESSURE AND SUCTION PRESSURE

Condensing pressure

Graph showing condensing pressure vs. outdoor ambient temperature for different indoor temperatures.

Suction pressure

Graph showing suction pressure vs. outdoor ambient temperature for different indoor temperatures.

2.STANDARD OPERATION DATA

Total

Overall capacity, SHF, and input for single and double unit operation.

Electrical circuit

Details on power supply and current for indoor and outdoor units.

Refrigerant circuit

Operating data for refrigerant pressures and temperatures.

Indoor side

Data related to indoor unit airflow, temperatures, and fan speed.

Outdoor side

Data for outdoor unit fan speed and airflow.

3.POWER SUPPLY

MSM18NW

Diagram illustrating power supply connections for the MSM18NW unit.

4.OPERATING RANGE

(1)POWER SUPPLY

Power supply ratings and guaranteed voltage ranges for units.

(2)OPERATION

Standard, maximum, and minimum operating temperature and humidity conditions.

5.ADDITIONAL REFRIGERANT CHARGE (R-22(oz))

6.MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE

7.PIPING PREPARATION

6 OUTLINES AND DIMENSIONS

MODEL : MUM18NW

Dimensions and layout of the MUM18NW outdoor unit.

OUTDOOR UNIT

Detailed measurements and installation space requirements for the outdoor unit.

REQUIRED SPACE

Diagram showing minimum clearance needed around the outdoor unit for servicing.

7 WIRING DIAGRAM

OUTDOOR

Wiring diagram for the outdoor unit, showing component connections.

MODEL MUM18NW WIRING DIAGRAM

Detailed wiring schematic for the MUM18NW outdoor unit.

SYMBOL

Key for symbols used in the wiring diagram, listing component names.

8 REFRIGERANT SYSTEM DIAGRAM

MS09NW × 2 / MUM18NW

Diagram illustrating the refrigerant flow and components for the system.

Indoor unit

Refrigerant circuit details for the indoor unit, including pipes and thermistors.

Outdoor unit

Refrigerant circuit details for the outdoor unit, including compressor and accumulator.

9 TROUBLESHOOTING

MUM18NW

Troubleshooting guide specific to the MUM18NW model.

9-1 Cautions on troubleshooting

Important safety and handling precautions before and during troubleshooting.

9-2 Trouble criterion of main parts

Methods and criteria for checking the normal/abnormal status of key components.

Check of outdoor unit

Compressor and outdoor fan do not operate. (Only indoor fan operates.)

Troubleshooting flowchart for when compressor and fan fail to operate.

10 DISASSEMBLY INSTRUCTIONS

OUTDOOR UNIT MUM18NW

Instructions for disassembling the MUM18NW outdoor unit.

1. Removing of the cabinet

Procedure to remove the valve cover and side panel of the outdoor unit.

2. Removing the propeller

Steps to safely remove the fan propeller from the outdoor unit.

3. Removing the outdoor fan motor.

4. Removing the compressor

11 PARTS LIST

OUTDOOR UNIT PARTS

List of part numbers and names for the MUM18NW outdoor unit.

MUM18NW

Detailed parts list for the MUM18NW outdoor unit with quantity and remarks.

12 OPTIONAL PARTS

1. REFRIGERANT PIPES

Specifications and part numbers for optional refrigerant extension pipes.

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