MITSUBISHI ELECTRIC PKA-A24KA7 Wall Mounted Heat Pump System Owner’s Manual

PKA-A24KA7 & PUZ-A24NHA7

24,000 BTU/H WALL-MOUNTED INDOOR UNIT

24,000 BTU/H HEAT PUMP UNIVERSAL OUTDOOR

Job Name:
System Reference:                                      Date:

Indoor Unit ……………………….. PKA-A24KA7
Outdoor Unit …………………. PUZ-A24NHA7

INDOOR UNIT FEATURES

• Sleek, compact design
• Simple installation
• Vane setting for air flow direction control
• Auto fan speed mode
• Ideal for spaces such as server rooms, daycare centers, classrooms, churches, small offices, 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

SPECIFICATIONS: PKA-A24KA7 & PUZ-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

|

1,960

Rated Power Input|

W

|

1,960

Moisture Removal|

Pints/h

|

5.0

Sensible Heat Factor| |

0.77

Power Factor [208V / 230V]|

%

|

95.7 / 95.7

Heating at 47°F2| Maximum Capacity|

BTU/H

|

28,000

Rated Capacity|

BTU/H

|

26,000

Minimum Capacity|

BTU/H

|

9,000

Maximum Power Input|

W

|

2,600

Rated Power Input|

W

|

1,750

Power Factor [208V / 230V]|

%

|

750.0 / 750.0

Heating at 17°F3| Maximum Capacity|

BTU/H

|

18,300

Rated Capacity|

BTU/H

|

15,700

Maximum Power Input|

W

|

1,820

Rated Power Input|

W

|

1,750

Heating at 5°F4| Maximum Capacity|

BTU/H

|

15,200

Maximum Power Input|

W

|

2,300

Efficiency| SEER | SEER2| |

21.4 | 21.3

EER1 | EER21| |

12.2 | 12.2

HSPF [IV] | HSPF2 [IV]| |

11.0 | 9.3

COP at 47°F2| |

4.35

COP at 17°F at Maximum Capacity3| |

2.95

COP at 5°F at Maximum Capacity4| |

1.94

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 (Outdoor)|

A

|

25

Recommended Wire Size [Indoor – Outdoor]|

AWG

|

14

Power Supply| |

Indoor unit is powered by the outdoor unit

Indoor Unit| MCA|

A

|

1.0

Fan Motor Full Load Amperage|

A

|

0.36

Fan Motor Type| |

DC Motor

Airflow Rate at Cooling, Dry|

CFM

|

635–705–775

Airflow Rate at Cooling, Wet|

CFM

|

570–635–700

Airflow Rate at Heating, Dry|

CFM

|

635–705–775

Sound Pressure Level [Cooling]|

dB[A]

|

39–42–45

Sound Pressure Level [Heating]|

dB[A]

|

39–42–45

Drain Pipe Size|

In. [mm]

|

5/8 [16]

Coating on Heat Exchanger| |

—

External Finish Color| |

White Munsell 1.0Y 9.2/0.2

Unit Dimensions|

W x D x H: In. [mm]

|

46-1/16 x 11-5/8 x 14-3/8 [1,170 x 295 x 365]

Package Dimensions|

W x D x H: In. [mm]

|

51 x 14-1/4 x 18-1/2 [1,295 x 362 x 470]

Unit Weight|

Lbs. [kg]

|

46 [21]

Package Weight|

Lbs. [kg]

|

53 [24]

Indoor Unit Operating Temperature Range| Cooling Intake Air Temp [Maximum / Minimum]*|

°F

|

90 DB, 72 WB / 66 DB, 61 WB

Heating Intake Air Temp [Maximum / Minimum]|

°F

|

77 DB / 59 DB

Outdoor Unit| MCA|

A

|

19.0

MOCP|

A

|

26

Fan Motor Full Load Amperage|

A

|

0.4

Fan Motor Output|

W

|

86

Airflow Rate [Cooling / Heating]|

CFM

|

1940 / 1940

Refrigerant Control| |

LEV

Defrost Method| |

Reverse Cycle

Coating on Heat Exchanger| |

Blue Fin Coating***

Sound Pressure Level, Cooling1|

dB(A)

|

47

Sound Pressure Level, Heating2|

dB(A)

|

48

Compressor Type| |

INVERTER-driven twin rotary

Compressor Model| |

SNB172FWHM1

Compressor Rated Load Amps|

A

|

7

Compressor Locked Rotor Amps|

A

|

11.0

Compressor Oil [Type // Charge]|

oz.

|

FV50S // 23

External Finish Color| |

Ivory Munsell 3Y 7.8/1.1

Base Pan Heater| |

N/A

Unit Dimensions|

W x D x H: In. [mm]

|

37-13/32 x 13 (+1-3/16) x 37-1/8 [950 x 330 (+30) x 943]

Package Dimensions|

W x D x H: In. [mm]

|

40-15/16 x 17-11/16 x 40-11/16 [1040 x 450 x 1033]

Unit Weight|

Lbs. [kg]

|

153 [69]

Package Weight|

Lbs. [kg]

|

179 [81]

Outdoor Unit Operating Temperature Range| Cooling Air Temp [Maximum / Minimum]*|

°F

|

115 DB / 0 DB

Heating Air Temp [Maximum / Minimum]|

°F

|

70 DB, 59 WB / -4 DB, -4 WB

Heating Thermal Lock-out / Re-start Temperatures**|

°F

|

-8 / -4

Refrigerant| Type| |

R410A

Pre-Charged Refrigerant Amount|

Lbs, oz

|

7.0, 11.0

Maximum Pre-Charged Piping Length|

Ft. [m]

|

70.0 [20.0]

Additional Refrigerant Charge Per Additional Piping Length|

oz./Ft. [g/m]

|

0.7 [50]

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]

|

165 [50]

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)

1 Cooling (Indoor // Outdoor)                  °F 80 DB, 67 WB // 95 DB, 75 WB
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

*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 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):

• 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: PKA-A24KA7

X87-835
Drain Pan Level Sensor/Control| SS610E
Refco Condensate Pump (100-240 VAC)| GOBI-II
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
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

OUTDOOR UNIT ACCESSORIES: PUZ-A24NHA7

INDOOR UNIT DIMENSIONS: PKA-A24KA7

Unit: inch (mm)

  Top side

  Left side

1. Knockout hole for left piping

  Front side

1. Operation lamp
2. DEFROST/STAND BY lamp
3. Receiver

  Right side

1. Mount board
2. Knockout hole for right piping

  Front side(Grille open)

1. Terminal block for Outdoor unit
2. Terminal block for power supply (option)
3. Terminal block for MA-remote controller
4. Emergency operation switch (cooling/heating)
5. 17-15/32(444)Gas pipe
6. 18-31/32(482)Liquid pipe
7. Drain hose
8. Filter hook

Piping connection

1  Liquid pipe| Refrigerant pipe: 3/8 O.D([ 9.52)
Flared connection: 3/8F
---|---
2  Gas pipe| Refrigerant pipe: 5/8 O.D([ 15.88)
Flared connection: 5/8F
3  Drain hose| 5/8([ 16) O.D
Effective length: 23-1/32 (585)

  Under side

1. Vane(auto)
2. Louver(manual)
3. Knockout hole for lower piping

Sleeve
(purchased locally)| Through hole
---|---
[2-15/16] (75)| [ 2-15/16~[ 3-5/32] (75~[ 80)

  Required space(Indoor unit)

1. Air inlet
2. Air outlet

  Knockout hole for piping

1. 4- 11/32 Bolt hole

2. Center measurement hole
   3/32

3. Mount board

4. Indoor unit outline

5. Wall hole for right rear piping

6. Knockout hole for rear piping

7. 75- 3/16
   Tapping screw hole

OUTDOOR UNIT DIMENSIONS: PUZ-A24NHA7

1 FREE SPACE (Around the unit)

The diagram below shows a basic example.
Explanation 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.)