3

Connection to the Indoor Unit

Use the cables that fit the connectors on the indoor unit control board. The items listed in this parts list cannot be used with the following models.

PMFY-BM

PMFY-AM

(1)External output cable (with a yellow connector)

This cable is used to connect a relay circuit for an interlocked operation with either an electric or a panel heater. Connect the cable to CN24 on the indoor unit control board.

(2)Panel heater connector (with a green connector)

This connector is used to perform an interlocked operation with a panel heater. Depending on the indoor unit control board specification, connect the cable either to CN4Y or CN22 as appropriate.

4 Locally Procured Wiring

A basic connection method is shown below.

(1) PEFY-P-NMSU-E and other models

Indoor unit

Outdoor unit

Remote control board

Electric Heater power source

Electric Heater or panel heater

Relay circuit

X

X

Adapter

Red

1

Yellow

White

2

 

White

1

White

 

 

 

3

 

 

(applicable only when a panel heater is connected)

control board

CN24

CN4Y

Dip switch SW3-2 “ON”

control board

PUHY, PURY-P- TGMU type Dip switch SW5-2 “ON”

PUHY, PURY-P- YHMU type Dip switch SW5-10 “ON”

PUMY series Dip switch SW4-4 “ON”

Preparations in the field

(2) PEFY-P-NMHU-E, PDFY-P-NMU-E and other models

Maximum cable length is 10 m (32ft)

Indoor unit

Outdoor unit

Remote control board

Electric Heater power source

Electric Heater or panel heater

Relay circuit

X

X

Adapter

Red

1

Yellow

White

2

 

White

1

Green

 

 

 

2

 

 

(applicable only when a panel heater is connected)

control board

CN24

CN22

Dip switch SW3-2 “ON”

control board

PUHY, PURY-P- TGMU type Dip switch SW5-2 “ON”

PUHY, PURY-P- YHMU type Dip switch SW5-10 “ON”

PUMY series Dip switch SW4-4 “ON”

Preparations in the field

Maximum cable length is 10 m (32ft)

For relay X use the specifications given below Operation coil

Rated voltage : 12VDC

Power consumption : 0.9W or less

*Use the diode that is recommended by the relay manufacturer at both ends of the relay coil. The length of the electrical wiring for the PAC-YU25HT is 2 meters (6-1/2 ft)

To extend this length, use sheathed 2-core cable. Control cable type : CVV, CVS, CPEV or equivalent. Cable size : 0.5 mm2 ~ 1.25 mm2 (16 to 22 AWG) Don’t extend the cable more than 10 meters (32ft)

Recommended circuit

 

FS1

H1

 

R

 

 

 

1-phase power

S

 

 

supply

88H

FS2

H2

208V, 230V/60Hz

R

FS1

 

FS1, 2 ----- Thermal fuse

Wiring diagram

S

FS2

 

 

 

88H

H1, H2 ----- Heater

 

 

 

26H

88H

26H

--------- Overheat protection

 

thermostat

Control board

 

88H

--------- Electromagnetic contactor

 

CN24

5

Wiring Restrictions

Keep the length of the cable connecting to the circuit board of the indoor unit shorter than 10 meters (32ft). Longer than 10 meters (32ft) could cause improper operation.

Use a transit relay when extending wiring such as remote wiring.

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Mitsubishi Electronics PAC-YU25HT Connection to the Indoor Unit, Locally Procured Wiring, Wiring Restrictions

PAC-YU25HT specifications

Mitsubishi Electronics has long been a leader in the field of climate control technologies, and the PAC-YU25HT is a testament to their commitment to innovation and efficiency. Designed primarily for use in commercial and industrial applications, this advanced air conditioning unit offers a range of features that ensure optimal performance and reliability.

At the heart of the PAC-YU25HT is its powerful inverter technology, which allows for variable speed operation. This means that the unit can adjust its cooling output according to the needs of the environment. By efficiently modulating the compressor speed, the PAC-YU25HT not only provides optimal temperature control but also minimizes energy consumption, making it an environmentally friendly choice.

One of the standout features of the PAC-YU25HT is its high cooling capacity, making it suitable for larger spaces. With a capacity of 25 kW, it can effectively manage the cooling needs of extensive commercial environments, ensuring comfort for occupants even in the warmest conditions. The unit is also equipped with a sophisticated air filtration system. This system effectively captures dust, pollen, and other allergens, improving indoor air quality and creating a healthier environment.

The PAC-YU25HT is designed with user convenience in mind. Its intuitive control interface allows for easy operation and monitoring, providing users with the flexibility to set their preferred cooling schedules. Moreover, the unit is compatible with a range of smart building technologies, enabling it to be integrated into existing building management systems for enhanced functionality.

Robust and durable, the PAC-YU25HT is built to withstand harsh environmental conditions. Its high-quality materials and construction ensure longevity and reliability, making it a worthwhile investment for businesses looking to enhance their climate control systems.

In addition, Mitsubishi's commitment to innovation is evident in the PAC-YU25HT's low noise operation. The unit is designed to operate quietly, making it ideal for environments where noise reduction is crucial, such as offices or conference rooms.

In summary, the Mitsubishi Electronics PAC-YU25HT combines high capacity, energy efficiency, and advanced technology, making it an exceptional choice for commercial and industrial cooling solutions. With its user-friendly features and robust design, it continues to set the standard for modern air conditioning systems.