MITSUBISHI ELECTRIC PLA-A24EA8 24,000 BTU H 3’ X 3’ Ceiling Cassette Instruction Manual

MITSUBISHI ELECTRIC PLA-A24EA8 24,000 BTU H 3’ X 3’ Ceiling Cassette

Product Information

Specifications

The product specifications for the PLA-A24EA8 & PUZ-A24NHA7 are as follows:

• Job Name: System Reference: PLA-A24EA8 & PUZ-A24NHA7
• 24,000 BTU/H 3′ X 3′ CEILING CASSETTE 24,000 BTU/H HEAT PUMP UNIVERSAL OUTDOOR
• Indoor Unit: PLA-A24EA8
• Outdoor Unit: PUZ-A24NHA7
• Electrical: 208/230, 1, 60 V AC
• Operating Temperature Range (Indoor Unit): 57°F to 89°F (DB), 40°F to 72°F (WB)
• Operating Temperature Range (Outdoor Unit): -8°F to 70°F (DB), -4°F to 59°F (WB)
• Dimensions (Indoor Unit): 33-1/16″ x 33-1/16″ x 11-3/4″ [840mm x 840mm x 298mm]
• Dimensions (Outdoor Unit): 37-13/32″ x 13 (+1-3/16)” x 37-1/8″ [950mm x 330mm (+30) x 943mm]

NOTES

AHRI Rated Conditions 1

Cooling (Indoor // Outdoor) °F 80 DB, 67 WB // 95 DB, 75 WB
(Rated data is determined at a fixed compressor speed) 2
Heating at 47°F (Indoor // Outdoor) °F 70 DB, 60 WB // 47 DB, 43 WB 3
Heating at 17°F (Indoor // Outdoor) °F 70 DB, 60 WB // 17 DB, 15 WB

Conditions 4

Heating at 5°F (Indoor // Outdoor) °F 70 DB, 60 WB // 5 DB, 4 WB

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

• Applications should be restricted to comfort cooling only; equipment cooling applications are not recommended for low ambient temperature conditions.
  • Wind baffles are required to operate below 23°F DB in cooling mode.
  • Heat pump system with wind baffle: 0°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

NOTES

AHRI Rated Conditions 1

Cooling (Indoor // Outdoor) °F 80 DB, 67 WB // 95 DB, 75 WB
(Rated data is determined at a fixed compressor speed) 2
Heating at 47°F (Indoor // Outdoor) °F 70 DB, 60 WB // 47 DB, 43 WB 3
Heating at 17°F (Indoor // Outdoor) °F 70 DB, 60 WB // 17 DB, 15 WB

Conditions 4

Heating at 5°F (Indoor // Outdoor) °F 70 DB, 60 WB // 5 DB, 4 WB

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

• Applications should be restricted to comfort cooling only; equipment cooling applications are not recommended for low ambient temperature conditions.
  • Wind baffles are required to operate below 23°F DB in cooling mode.
  • Heat pump system with wind baffle: 0°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

Product Usage Instructions

Installation

To install the PLA-A24EA8 & PUZ-A24NHA7, follow these steps:

1. Choose a suitable location for the indoor unit on the ceiling. Ensure there is enough space for installation and maintenance.
2. Install the outdoor unit in a well-ventilated area, away from direct sunlight and obstacles.
3. Connect the refrigerant piping between the indoor and outdoor units, following the specified diameter and length requirements.
4. Mount the indoor unit securely on the ceiling using the provided accessories.
5. Make electrical connections according to the specified voltage and current requirements.
6. Install any additional accessories, such as remote sensors or drain pans, if required.
7. Test the system to ensure proper operation.

Operation

To operate the PLA-A24EA8 & PUZ-A24NHA7, use the following guidelines:

1. Use the wired remote controller or centralized control interface to set the desired temperature and operating mode.
2. Ensure that the air outlet guide is properly positioned for optimal air distribution.
3. Maintain the centralized drain pan to prevent water leakage.
4. Regularly clean and service the unit using the provided control/service tool.
5. Use hail guards to protect the outdoor unit from damage.
6. Install a wind baffle if needed to prevent wind interference.

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 0°F providing 100% capacity
• 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.

INDOOR UNIT ACCESSORIES

OUTDOOR UNIT ACCESSORIES

INDOOR UNIT DIMENSIONS

OUTDOOR UNIT DIMENSIONS

1340 Satellite Boulevard Suwanee, GA 30024
Toll Free: 800-433-4822 www.mehvac.com

FAQ

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

A: No, the PAC-SF40RM-E wired remote controller is required for use with the PLA-A24EA8. Wireless remote controllers are not compatible.

Q: What are the operating temperature ranges for the indoor and outdoor units?

A: The indoor unit can operate within a temperature range of 57°F to 89°F (DB), 40°F to 72°F (WB). The outdoor unit can operate within a temperature range of -8°F to 70°F (DB), -4°F to 59°F (WB).

Q: What are the dimensions of the indoor and outdoor units?

A: The dimensions of the indoor unit are 33-1/16″ x 33-1/16″ x 11-3/4″ [840mm x 840mm x 298mm]. The dimensions of the outdoor unit are 37-13/32″ x 13 (+1-3/16)” x 37-1/8″ [950mm x 330mm (+30) x 943mm].

References

• Mitsubishi Electric Trane US HVAC | Home

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