MITSUBISHI ELECTRIC PLA-A24EA8 BTU Commercial Ceiling Cassette Single Zone Heat Pump Owner’s Manual

: June 15, 2024
: Mitsubishi Electric

Table of Contents

MITSUBISHI ELECTRIC PLA-A24EA8 BTU Commercial Ceiling Cassette Single
Product Information
Product Usage Instructions
INDOOR UNIT FEATURES
SPECIFICATIONS
INDOOR UNIT ACCESSORIES
INDOOR UNIT DIMENSIONS
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

MITSUBISHI ELECTRIC PLA-A24EA8 BTU Commercial Ceiling Cassette Single

Zone Heat Pump

Product Information

Specifications

Job Name: System Reference: PLA-A24EA8 & PUY-A24NHA7 24,000 BTU/H 3′ X 3′ CEILING CASSETTE 24,000 BTU/H COOLING ONLY OUTDOOR
Indoor Unit: PLA-A24EA8
Outdoor Unit: PUY-A24NHA7 Date

Indoor Unit Specifications

Operating Temperature Range: Indoor Unit
Cooling Intake Air Temp [Maximum / Minimum]: 94.3°F / 94.3°F
Fan Motor Full Load Amperage: 0.86 A
Fan Motor Output Airflow Rate [Cooling / Heating]: 1940 CFM
Sound Pressure Level, Cooling: 47 dB(A)
Compressor Type: INVERTER-driven twin rotary
Compressor Model: SNB172FWHM1
Compressor Rated Load Amps: 7 A
Compressor Locked Rotor Amps: 11 A
External Finish Color: Ivory Munsell 3Y 7.8/1.1
Unit Dimensions: 37-13/32 x 13 (+1-3/16) x 37-1/8 [950 x 330 (+30) x 943]
Unit Weight: 151 Lbs. [68 kg]

Outdoor Unit Specifications

Operating Temperature Range: Outdoor Unit
Refrigerant: R410A
Cooling Air Temp [Maximum / Minimum]: 115°F / -40°F
Pre-Charged Refrigerant Amount: 7.0 oz.
Maximum Pre-Charged Piping Length: 11.0 Ft. [3.35 m]
Type: LEV Reverse Cycle
Base Pan Heater: Yes
Package Dimensions: 40-15/16 x 17-11/16 x 40-11/16 [1040 x 450 x 1033]
Package Weight: 176 Lbs. [80 kg]

Piping Specifications

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

Indoor Unit Accessories

Control Interface: Remote Sensor Wired Remote Controller
NOTE: PAC-SF40RM-E (Unable to use with wireless remote controller)

Outdoor Unit Accessories

PAC-SG59SG-E
PAC-SG63DP-E
PAC-SG64DP-E
PAC-SK52ST
M21EC0397
PAC-USCMS-MN-1
M21EC1397
HG-A6
PAC-SJ85MA-E
PAC-SJ95MA-E
S144-250
S144-50
S164-250
S164-50
ULTRILITE2
QSMS1801M
QSMS2401M
QSWB2000M-1
QSWBSS
QSMS1201M
WB-PA5
WB-RE5
WB-SD5

Product Usage Instructions

Installation

Choose a suitable location for mounting the indoor unit. Ensure proper clearance for air intake and discharge.
Install the outdoor unit in a well-ventilated area, away from direct sunlight and obstacles.
Connect the indoor and outdoor units using the specified gas and liquid pipes.
Install the control interface and accessories as needed.
Refer to the user manual for detailed installation instructions.

Operation

Ensure the power supply is connected and turned on.
Use the wired remote controller or control interface to set the desired temperature and mode.
The unit will start cooling or heating according to the set temperature and mode.
Adjust the fan speed and airflow direction as needed.
To turn off the unit, set the temperature to a higher value or use the power button on the remote controller.

Maintenance

Regularly clean the air filters to ensure optimal performance.
Inspect the outdoor unit for any debris or obstructions and clean if necessary.
Check the refrigerant levels and refill if required.
Schedule professional maintenance at least once a year.

Frequently Asked Questions (FAQ)

Q: Can I use a wireless remote controller with the PLA-A24EA8 indoor unit?

A: No, the PLA-A24EA8 is only compatible 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 70 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 per ASTM B117 testing
Seacoast protection standard from 2022 production

SPECIFICATIONS

PLA-A24EA8 & PUY-A24NHA7

Cooling at 95°F1	Maximum Capacity	BTU/H	24,000
Rated Capacity	BTU/H	24,000
Minimum Capacity	BTU/H	10,000
Maximum Power Input	W	1,670
Rated Power Input	W	1,670
Moisture Removal	Pints/h	3.0
Sensible Heat Factor	0.86
Power Factor [208V / 230V]	%	94.3 / 94.3
Efficiency	SEER2	24.7
EER21	14.3
HSPF2 [IV]	—
ENERGY STAR® Certified	Yes
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 (Outdoor)	A	25
Recommended Wire Size [Indoor – Outdoor]	AWG	14
Power Supply	The indoor unit is powered by the outdoor unit
Indoor Unit	MCA	A	1.0
Fan Motor Full Load Amperage	A	0.56
Fan Motor Type	DC Motor
Airflow Rate at Cooling, Dry	CFM	530–640–710–810
Airflow Rate at Cooling, Wet	CFM	490–600–670–770
Sound Pressure Level [Cooling]	dB[A]	28–30–33–36
Drain Pipe Size	In. [mm]	1-1/4 [32]
Condensate Lift Mechanism, Maximum Distance	In. [mm]	33-7/16 [850]
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 x 33-1/16 x 11-3/4 [840 x 840 x

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 are required to operate below 23°F DB in cooling mode.
The 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):
The 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

Piping	Gas Pipe Size O.D. [Flared]	In.[mm]
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

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 are required to operate below 23°F DB in cooling mode.
A 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):
The 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-A24EA8

Control Interface	3-Pin Connector	□ PAC-715AD
Airline ZBS Wired Blueface Principal Controller White	□ AZZBSBLUEFACECB
Airline ZBS Wired Blueface Principal Controller White	□ AZZBSBLUEZEROCB
Airline ZBS Wired Lite Controller White	□ AZZBSLITECB
Airline ZBS Wireless Lite Controller White	□ AZZBSLITERB
Airline ZBS Wireless Think Controller White	□ AZZBSTHINKRB
CN24 Relay Kit	□ CN24RELAY-KIT-CM3
IT Extender	□ PAC-WHS01IE-E
Kumo station® for kumo cloud®	□ PAC-WHS01HC-E
Procon BACnet® and Modbus® Interface	□ PAC-UKPRC001-CN-1
Remote Operation Adapter‡	□ PAC-SF40RM-E
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 humidity sensor for Kumo cloud®	□ PAC-USWHS003-TH-1
Wired Remote Controller	Deluxe Wired MA Remote Controller†	□ PAR-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-FA32MA-W
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®| □ 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