Mitsubishi Electric City Multi PEFY-P15NMSU-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 PEFY-P15NMSU-E Specifications

General

Brand	Mitsubishi Electric
Model	City Multi PEFY-P15NMSU-E
Category	Air Conditioner
Language	English

Summary

Electrical Work

1-1. General Cautions

Provides safety precautions for electrical work, wiring regulations, and grounding.

1-2. Power Supply for Indoor and Outdoor Units

Details electrical characteristics of indoor and outdoor units for power supply.

1-3. Power Cable Specifications

Defines wire thickness and breaker specifications for power supply cables.

1-4. Power Supply Examples

Illustrates power supply connection examples for different system configurations.

M-NET Control

2-1. Transmission Cable Length Limitation

Specifies length limits for M-NET transmission cables for various controllers.

2-2. Transmission Cable Specifications

Details the types and sizes of transmission cables used for M-NET communication.

2-3. System Configuration Restrictions

Outlines restrictions for configuring City Multi systems and ensuring M-NET communication.

2-3-3. Ensuring Proper Power Supply to System Controller

Explains methods for supplying power to the system controller via M-NET.

2-4. Address Setting

Describes switch operations for setting unit addresses and connection numbers.

2-4-3. System Examples

Illustrates various system configurations with M-NET components.

Piping Design

3-1. R410A Piping Material

Specifies copper pipe types, sizes, and radial thickness for R410A refrigerant.

3-2. Piping Design

Provides piping schemes and size selection rules for PUHY-HP outdoor units.

3-3. Refrigerant Charging Calculation

Explains how to calculate additional refrigerant charge based on piping length and size.

Outdoor Installation

4-1. Requirement on Installation Site

Lists criteria for selecting a suitable installation site for outdoor units.

4-2. Spacing

Specifies required clearances around outdoor units for single and collective installations.

4-3. Piping and Installation Procedures

Covers lifting, installation, pipe routing, and twinning procedures for outdoor units.

4-4. Weather Countermeasure

Provides measures for snow hoods and wind protection for outdoor units.

Caution for Refrigerant Leakage

5-1. Refrigerant Property

Details R410A refrigerant properties and critical concentration limits for safety.

5-2. Confirm Critical Concentration and Take Countermeasure

Explains how to calculate and mitigate risks of refrigerant leakage.