MITSUBISHI ELECTRIC PLA-A42EA7 42000 BTU/H 3 X 3 Ceiling Cassette Owner’s Manual

MITSUBISHI ELECTRIC PLA-A42EA7 42000 BTU/H 3 X 3 Ceiling Cassette

Specifications

• Indoor Unit
  • Operating Temperature Range : 77°F to 115°F
  • Fan Motor Output : 3590 CFM (Cooling)
  • Sound Pressure Level (Cooling): 52 dB[A]
  • Compressor Type: INVERTER-driven twin rotary
  • Refrigerant: R410A
• Outdoor Unit
  • Operating Temperature Range : -40°F to 66°F
  • Pre-Charged Refrigerant Amount : 10.0 oz.
  • Maximum Piping Length: 225 ft.

Product Usage Instructions

Installation

1. Ensure proper location for indoor and outdoor units with adequate space and ventilation.
2. Follow manufacturer guidelines for mounting and connecting the units.
3. Connect the gas and liquid pipes with the specified sizes and lengths.

Operation

1. Use the wired remote controller for controlling the indoor unit.
2. Set the desired temperature and fan speed for optimal comfort.
3. Maintain a clean air filter for efficient operation.

Maintenance

1. Regularly clean the air outlet guide and control/service tools.
2. Check and replace the air filters as needed.
3. Schedule professional maintenance for the units at least once a year.

FAQ

• What should I do if the unit is not cooling effectively?
  Check if the air filters are clean and there are no obstructions around the indoor and outdoor units. Ensure proper airflow.

• Can I use a wireless remote controller with the indoor unit?
  No, the indoor unit is compatible only with the wired remote controller PAC-SF40RM-E.

INDOOR UNIT FEATURES

• Space-efficient ductless installation
• Equipped with 3D i-see Sensor® for enhanced comfort and energy efficiency
• Airflow settings for high and low ceiling applications
• Individual vane settings for direct/indirect airflow control or variable airflow patterns
• Knockouts for outside-air intake and branch-duct run
• Filter indicator signal
• Easy-to-clean, washable filter (optional high-efficiency filter available – requires multi-function casement)
• Built-in condensate lift mechanism
• Ideal for retail shops, classrooms, office spaces, conference centers, building lobbies, and more
• Multiple control options available:
  • kumo cloud® smart device app for remote access
  • Third-party interface options
  • Wired or wireless controllers

OUTDOOR UNIT FEATURES

• Variable speed INVERTER-driven compressor
• Pre-charged with refrigerant volume for piping length up to 100 ft
• Low ambient cooling down to -40°F providing 100% capacity (with wind baffles)
• 24-hour continuous operation (cooling mode)
• High pressure protection
• Fast restart
• Superior energy and operational efficiency
• Seacoast protection*
  • External Outer Panel: Phosphate coating + Acrylic-Enamel coating
  •  Fan Motor Support: Epoxy resin coating (at edge face)
  • Separator Assembly Valve Bed: Epoxy resin coating (at edge face)
  • Blue Fin treatment is an anti-corrosion treatment that is applied to the Heat exchanger coil to protect it against airborne contaminants.
  • Heat exchanger coil and base panel rated for 2,000 hours in accordance with ASTM B117 testing
• Seacoast protection standard from 2022 production

SPECIFICATIONS: PLA-A42EA7 & PUY-A42NKA7

Cooling at 95°F1

| Maximum Capacity| BTU/H| 42,000
---|---|---|---
Rated Capacity| BTU/H| 42,000
Minimum Capacity| BTU/H| 16,000
Maximum Power Input| W| 3,590
Rated Power Input| W| 3,590
Moisture Removal| Pints/h| 7.9
Sensible Heat Factor| 0.79
Power Factor [208V / 230V]| %| 94.6 / 94.6

Efficiency

| SEER | SEER2| 21.0 | 21.5
EER1 | EER21| 11.6 | 11.6
ENERGY STAR® Certified| No

Electrical

| Voltage, Phase, Frequency| 208/230, 1, 60
Guaranteed Voltage Range| V AC| 198 – 253
Voltage: Indoor – Outdoor, S1-S2| V AC| 208/230
Voltage: Indoor – Outdoor, S2-S3| V DC| 24
Short-circuit Current Rating [SCCR]| kA| 5
Recommended Fuse/Breaker Size (Oudoor)| A| 30
Recommended Wire Size [Indoor – Outdoor]| AWG| 14
Power Supply| Indoor unit is powered by the outdoor unit

Indoor Unit

| MCA| A| 2.0
Fan Motor Full Load Amperage| A| 0.95
Fan Motor Type| DC Motor
Airflow Rate at Cooling, Dry| CFM| 740–920–1,060–1,200
Airflow Rate at Cooling, Wet| CFM| 700–880–1,020–1,160
Airflow Rate at Heating, Dry| CFM| 740–920–1,060–1,200
Sound Pressure Level [Cooling]| dB[A]| 34–38–42–45
Sound Pressure Level [Heating]| dB[A]| 34–38–42–45
Drain Pipe Size| In. [mm]| 1-1/4 [32]
Condensate Lift Mechanism, Maximum Distance| In. [mm]| 33-7/16 [849]
Coating on Heat Exchanger| —
External Finish Color| White Munsell 6.4Y 8.9/0.4
Unit Dimensions| W x D x H: In. [mm]| 33-1/16 // 37-13/32 x 33-1/16 // 37-13/32 x 11-3/4 // 1-9/16 [840 //

950 x 840 // 950 x 298 // 40]

Package Dimensions| W x D x H: In. [mm]| 35-9/16 // 39-6/16 x 34-5/16 // 38-3/16 x 16-9/16 // 4-12/16 [903 //

1,000 x 871 // 970 x 421 // 121]

Unit Weight| Lbs. [kg]| 56 // 11 [25 // 5]
Package Weight| Lbs. [kg]| 77 [35]
Indoor Unit Operating Temperature Range| Cooling Intake Air Temp [Maximum / Minimum]*| °F| 90 DB, 72 WB / 66 DB, 61 WB

Outdoor Unit

| MCA| A| 25.0
MOCP| A| 31
Fan Motor Full Load Amperage| A| 0.5 + 0.5
Fan Motor Output| W| 74
Airflow Rate [Cooling / Heating]| CFM| 3880
Refrigerant Control| LEV
Defrost Method| Reverse Cycle
Coating on Heat Exchanger| Blue Fin Coating**
Sound Pressure Level, Cooling1| dB(A)| 52
Compressor Type| INVERTER-driven twin rotary
Compressor Model| MNB33FBRMC-L
Compressor Rated Load Amps| A| 8
Compressor Locked Rotor Amps| A| 13.0
Compressor Oil [Type // Charge]| oz.| FV50S // 45
External Finish Color| Ivory Munsell 3Y 7.8/1.1
Base Pan Heater| N/A
Unit Dimensions| W x D x H: In. [mm]| 41-5/16 x 13 (+1-3/16) x 52-11/16 [1050 x 330 (+30) x 1338]
Package Dimensions| W x D x H: In. [mm]| 42-15/16 x 17-11/16 x 56-4/16 [1091 x 450 x 1429]
Unit Weight| Lbs. [kg]| 211 [96]
Package Weight| Lbs. [kg]| 243 [110]
Outdoor Unit Operating Temperature Range| Cooling Air Temp [Maximum / Minimum]| °F| 115 DB / -40 DB

Refrigerant

| Type| R410A
Pre-Charged Refrigerant Amount| Lbs, oz| 10.0, 6.0
Maximum Pre-Charged Piping Length| Ft. [m]| 100.0 [30.0]
Additional Refrigerant Charge Per Additional Piping Length| oz./Ft. [g/m]| 0.3 [22.5]

Piping

| Gas Pipe Size O.D. [Flared]| In.[mm]| 5/8 [15.88]
---|---|---|---
Liquid Pipe Size O.D. [Flared]| In.[mm]| 3/8 [9.52]
Maximum Piping Length| Ft. [m]| 225 [68]
Maximum Height Difference| Ft. [m]| 100 [30]
Maximum Number of Bends| 15

NOTES:
AHRI Rated Conditions
(Rated data is determined at a fixed compressor speed) 1Cooling (Indoor // Outdoor) °F 80 DB, 67 WB // 95 DB, 75 WB

• Indoor/Outdoor Unit Operating Temperature Range (Cooling Air Temp [Maximum / Minimum]):

  • Wind baffles required to operate below 23°F DB in cooling mode.
  • Cooling-only system with advanced wind baffle: -40°F – 115°F.
  • Refer to wind baffle documentation for further information.

• Outdoor Unit Operating Temperature Range (Cooling Thermal Lock-out / Re-start Temperatures; Heating Thermal Lock-out / Re-start Temperatures):
  System cuts out in heating mode to avoid thermistor error and automatically restarts at these temperatures.

• Blue Fin Coating Standard from 2022 production:

  • PU(Y/Z)-A(12/18)NKA7 – Beginning with serial number 12U*****
  • PU(Y/Z)-A(24/30/36/42)NKA7 – Beginning with serial number 1ZU*****

INDOOR UNIT ACCESSORIES: PLA-A42EA7

Control Interface

| 3-Pin Connector| □ PAC-715AD
---|---|---
Airzone ZBS Wired Blueface Principal Controller White| □ AZZBSBLUEFACECB
Airzone ZBS Wired Blueface Principal Controller White| □ AZZBSBLUEZEROCB
Airzone ZBS Wired Lite Controller White| □ AZZBSLITECB
Airzone ZBS Wireless Lite Controller White| □ AZZBSLITERB
Airzone ZBS Wireless Think Controller White| □ AZZBSTHINKRB
BACnet® and Modbus® Interface| □ PAC-UKPRC001-CN-1
CN24 Relay Kit| □ CN24RELAY-KIT-CM3
IT Extender| □ PAC-WHS01IE-E
kumo station® for kumo cloud®| □ TAC-WHS01HC-E
Remote Operation Adapter‡| □ PAC-SF40RM-E
Thermostat Interface| □ PAC-US444CN-1
Thermostat Interface| □ PAC-US445CN-1
USNAP Adapter| □ PAC-WHS01UP-E
Wireless Interface for kumo cloud®| □ PAC-USWHS002-WF-2

Remote Sensor

| Flush Mount Remote Temperature Sensor| □ PAC-USSEN002-FM-1
Flush Mount Temperature Sensor| □ PAC-USSEN001-FM-1
Remote Temperature Sensor| □ PAC-SE41TS-E
Wireless temperature and humitity sensor for kumo cloud®| □ PAC-USWHS003-TH-1

Wired Remote Controller

| Deluxe Wired MA Remote Controller†| □ AAR-40MAAU
Simple Ductless Wired Remote Controller| □ PAC-SDW01RC-1
Simple MA Remote Controller†| □ PAC-YT53CRAU-J
Touch MA Controller†| □ PAR-CT01MAU-SB

Wireless Remote Controller

| kumo touch™ RedLINK™ Wireless Controller| □ MHK2
Lockdown bracket for remote controller| □ RCMKP1CB
Wireless MA Receiver| □ PAR-SR32MA-E
Wireless MA Remote Controller| □ PAR-FL32MA-E
Wireless Remote Contoller| □ PAR-SL101A-E
Wireless Signal Receiver Panel| □ PAR-SR4LU-E
Casement| Multi-function Casement| □ PAC-SJ41TM-E

Condensate

| Blue Diamond (Advanced) Mini Condensate Pump w/ Reservoir & Sensor (208/230V) [recommended]| □ X87-721
Blue Diamond (MegaBlue Advanced) Condensate Pump w/ Reservoir & Sensor| □ X87-835
Blue Diamond Sensor Extension Cable — 15 Ft.| □ C13-103
Refco Condensate Pump (100-240 VAC) up to 120,000 BTU/H| □ COMBI

Disconnect Switch

| (30A/600V/UL) [fits 2” X 4” utility box] – Black| □ TAZ-MS303
(30A/600V/UL) [fits 2” X 4” utility box] – White| □ TAZ-MS303W
Filter| High Efficiency Filter Element**| □ PAC-SH59KF-E
i-see Sensor® Panel| Grille with 3D i-see Sensor® (required)| □ PLP-41EAEU

Lineset

| 10’ x 3/8” x 10’ x 5/8” Lineset (Twin-Tube Insulation)| □ MPLS385812T-10
100’ x 3/8” x 100’ x 5/8” Lineset (Twin-Tube Insulation)| □ MPLS385812T-100
15’ x 3/8” x 15’ x 5/8” Lineset (Twin-Tube Insulation)| □ MPLS385812T-15
30’ x 3/8” x 30’ x 5/8” Lineset (Twin-Tube Insulation)| □ MPLS385812T-30
50’ x 3/8” x 50’ x 5/8” Lineset (Twin-Tube Insulation)| □ MPLS385812T-50
65’ x 3/8” x 65’ x 5/8” Lineset (Twin-Tube Insulation)| □ MPLS385812T-65
Shutter Plate| Shutter Plate| □ PAC-SJ37SP-E
Space Panel| Space Panel| □ PAC-SJ38AS-E
Air Outlet Guide| Air Outlet Guide (1 Piece)| □ PAC-SH96SG-E (two pieces are required)
---|---|---

Control/Service Tool

| Control/Service Tool| □ PAC-SK52ST
M- & P-Series Maintenance Tool Cable Set| □| M21EC0397
USB/UART Conversion Cable (Required for all laptop connection)| □| M21EC1397

M-NET Converter

| M-NET Converter| □ PAC-SJ85MA-E
M-NET Converter| □ PAC-SJ95MA-E

Mini-Split Wire

| 14 Gauge, 4 wire MiniSplit Cable—250 ft. roll| □| S144-250
14 Gauge, 4 wire MiniSplit Cable—50 ft. roll| □| S144-50
16 Gauge, 4 wire MiniSplit Cable—250 ft. roll| □| S164-250
16 Gauge, 4 wire MiniSplit Cable—50 ft. roll| □| S164-50
Mounting Pad| Condensing Unit Mounting Pad: 24” x 42” x 3”| □ ULTRILITE2

Stand

| 18” Dual Fan Stand| □ QSMS1802M
24” Dual Fan Stand| □ QSMS2402M
Condenser Wall Bracket| □ QSWB2000M-1
Condenser Wall Bracket – Stainless Steel Finish| □ QSWBSS
Outdoor Unit Stand — 12” High| □ QSMS1202M

Wind Baffle

| Front Wind Baffle| □ WB-PA3 (two pieces are required)
Rear Wind Baffle| □ WB-RE6
Side Advanced Wind Baffle| □ WB-SD6

INDOOR UNIT DIMENSIONS: PLA-A42EA7

NOTE

1. CHOOSE THE GRILLE AMONG THE DEDICATED GRILLES.
2. REINFORCE THE SUSPENSION BOLT FOR EARTHQUAKE-RESISTANCE AS NEEDED.
3. FOR THE SUSPENSION BOLT, USE M10 OR W3/8. (PROCURED AT THE LOCAL SITE.)
4. FOR DRAIN PIPE, USE VP-25(O.D. n1-1/4″(( 32) PVC TUBE). DRAIN PUMP INCLUSION. RAISE IS MAX 33-7/16″(850mm) FROM THE CEILING.
5. ELECTRICAL BOX MAY BE REMOVED FOR THE SERVICE PURPOSE. MAKE SURE TO SLACK THE ELECTRICAL WIRE LITTLE BIT FOR CONTROL/POWER WIRES CONNECTION.
6. THE HEIGHT OF THE INDOOR UNIT IS ABLE TO BE ADJUSTED WITH THE GRILLE ATTACHED.
7. REQUIRES “E” OR MORE SPACE BETWEEN TRANSOM AND CEILING FOR THE INSTALLATION.
8. WHEN INSTALLING THE BRANCH DUCTS, BE SURE TO INSULATE ADEQUATELY. OTHERWISE CONDENSATION AND DRIPPING MAY OCCUR. (IT BECOMES THE CAUSE OF DROPLET OR DROPLET DRIPPING.)
9. AS FOR NECESSARY INSTALLATION/SERVICE SPACE, PLEASE REFER TO THE RIGHT AT FIGURE.
10. FOR THE INSTALLATION OF THE OPTIONAL HIGH EFFICIENCY FILTER OR MULTI-FUNCTIONAL CASEMENT, REFER TO SPECIAL DRAWING.

DETAILS OF FRESH AIR INTAKE HOLE

DETAILS OF SIGNAL RECEVER

OUTDOOR UNIT DIMENSIONS: PUY-A42NKA7

1. FREE SPACE (Around the unit)
   The diagram below shows a basic example. Explantion of particular details are given in the installation manuals etc.

2. SERVICE SPACE
   Dimensions of space needed for service access are shown in the below diagram.

3. FOUNDATION BOLTS
   Please secure the unit firmly with 4 foundation (M10<W3/8>) bolts. (Bolts and washers must be purchased locally.)

4. PIPING-WIRING DIRECTIONS
   Piping and wiring connections can be made from 4 directions: FRONT, Right, Rear and Below.

Example of Notes

1. Refrigerant GAS pipe connection (FLARE) ø15.88(5/8F)
2. Refrigerant LIQUID pipe connection (FLARE) ø9.52(3/8F)
3. Indication of STOP VALVE connection location.

Piping Knockout Hole Details

Documents / Resources

| MITSUBISHI ELECTRIC PLA-A42EA7 42000 BTU/H 3 X 3 Ceiling Cassette [pdf] Owner's Manual
PLA-A42EA7 42000 BTU H 3 X 3 Ceiling Cassette, PLA-A42EA7, 42000 BTU H 3 X 3 Ceiling Cassette, H 3 X 3 Ceiling Cassette, Ceiling Cassette, Cassette
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