Mitsubishi Electric CITY MULTI PKFY-P24NKMU-E User Manual

CITY MULTI
DATA U5
SYSTEM DESIGN H SERIES
SYSTEM DESIGN H SERIES
1. Electrical work.................................................................................................................................................. 4 - 68
1-1.General cautions ....................................................................................................................................... 4 - 68
1-2.Power supply for Indoor unit and Outdoor unit .......................................................................................... 4 - 69
1-3.Power cable specifications ........................................................................................................................ 4 - 71
1-4.Power supply examples............................................................................................................................. 4 - 72
2. M-NET control.................................................................................................................................................. 4 - 74
2-1.Transmission cable length limitation.......................................................................................................... 4 - 74
2-2.Transmission cable specifications............................................................................................................. 4 - 75
2-3.System configuration restrictions............................................................................................................... 4 - 76
2-4.Address setting.......................................................................................................................................... 4 - 79
3. Piping Design................................................................................................................................................... 4 - 90
3-1.R410A Piping material............................................................................................................................... 4 - 90
3-2.Piping Design ............................................................................................................................................ 4 - 91
3-3.Refrigerant charging calculation................................................................................................................ 4 - 93
4. Outdoor Installation.......................................................................................................................................... 4 - 94
4-1.Requirement on installation site ................................................................................................................ 4 - 94
4-2.Spacing...................................................................................................................................................... 4 - 95
4-3.Piping direction.......................................................................................................................................... 4 - 97
4-4.Weather countermeasure.......................................................................................................................... 4 - 102
5. Caution for refrigerant leakage ........................................................................................................................ 4 - 103
5-1.Refrigerant property................................................................................................................................... 4 - 103
5-2.Confirm the Critical concentration and take countermeasure.................................................................... 4 - 103
4 - 67

Mitsubishi Electric CITY MULTI PKFY-P24NKMU-E Specifications

General

Series	CITY MULTI
Heating Capacity	3.2 kW
Energy Efficiency Class	A
Refrigerant	R410A
Power Supply	220-240 V, 50 Hz

Summary

Electrical Work

1-1. General cautions

Provides essential safety guidelines and wiring advice for electrical installations.

1-2. Power supply for Indoor unit and Outdoor unit

Details electrical characteristics of indoor units, including voltage and current ratings.

1-3. Power cable specifications

M-NET Control

2-1. Transmission cable length limitation

Defines maximum allowed lengths for transmission cables based on type and gauge.

2-2. Transmission cable specifications

2-3. System configuration restrictions

Outlines common restrictions for system configuration and component interconnections.

2-4. Address setting

Explains how to set unit addresses and connection numbers using switches.

2-3-3. Ensuring proper power supply to System controller

2-4-2. Rule of setting address

Piping Design

3-1. R410A Piping material

3-3. Refrigerant charging calculation

Explains how to calculate and perform additional refrigerant charging for extended piping.

Outdoor Installation

4-1. Requirement on installation site

4-2. Spacing

4-3-2. Installation

Caution for refrigerant leakage

5-1. Refrigerant property

5-2. Confirm the Critical concentration and take countermeasure

Details how to confirm refrigerant concentration and implement countermeasures against leakage.