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Mitsubishi Electric PUZ-WZ50VAA User Manual

Mitsubishi Electric PUZ-WZ50VAA
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1
Contents
1. Safety precautions
After installation work has been completed, explain the
“Safety precautions,” use, and maintenance of the unit to
the customer/user according to the information in the Op-
eration Manual and perform the test run to demonstrate
operation. Both the Installation Manual and Operation
Manual must be retained by the user. The Installation
Manual and Operation Manual must be passed by the user
to subsequent users.
: Indicates a part which must be grounded.
WARNING:
Carefully read the labels a󰀩xed to the main unit.
Before installing the unit, make sure you read all
the “Safety precautions”.
Please report to or take consent by the supply au-
thority before connection to the system.
WARNING:
Describes precautions that must be observed to pre-
vent danger of injury or death to the user.
CAUTION:
Describes precautions that must be observed to pre-
vent damage to the unit and/or limit the danger of in-
jury or death to the user.
MEANINGS OF SYMBOLS DISPLAYED ON THE UNIT
WARNING
(Risk of re)
This unit uses R290, a highly ammable refrigerant. If any refrigerant leaks or
comes in contact with re or a heated surface or environment, there is a risk of re
or explosion, and the installer and/or user is warned to take all possible safety pre-
cautions when handling the unit and R290, being sure to keep a safe distance at all
times to any related re or explosion and to notify the re department immediately
on becoming aware of such an outcome.
Read the OPERATION MANUAL carefully before operation.
Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL
before operation.
Further information is available in the OPERATION MANUAL, INSTALLATION MANUAL, and the like.
Note: This symbol mark is for EU countries only.
This symbol mark is according to the directive 2012/19/EU Article 14 Information for users and Annex IX.
Your MITSUBISHI ELECTRIC product is designed and manufactured with high quality materials and components which can be recycled and reused.
This symbol means that electrical and electronic equipment, at their end-of-life, should be disposed of separately from your household waste.
Please, dispose of this equipment at your local community waste collection/recycling centre.
In the European Union there are separate collection systems for used electrical and electronic product.
Please, help us to conserve the environment we live in!
1. Safety precautions ........................................................................................1
2. Installation location .......................................................................................10
3. Protective zone .............................................................................................14
4. Installing the outdoor unit .............................................................................17
5. Drainage piping work ....................................................................................18
6. Water piping work .........................................................................................19
7. Electrical work ..............................................................................................21
8. Test run ........................................................................................................23
9. System control .............................................................................................24
10. Handing over to the user ............................................................................24
11. Inspection and maintenance.......................................................................24
12. Repair and service......................................................................................24
13. Decommissioning .......................................................................................24
14. Recycling and disposal ...............................................................................25
15. Specications .............................................................................................26
16. Serial number .............................................................................................26
en
DG79H195H01_01en.indd 1 2023/02/13 16:02:22
003

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Mitsubishi Electric PUZ-WZ50VAA Specifications

General IconGeneral
Cooling Capacity (kW)5.0
Heating Capacity (kW)6.0
RefrigerantR32
Power Supply220-240 V, 50 Hz
Indoor Unit Noise Level25 dB(A)
Coefficient of Performance (Heating)4.0
Operating Temperature Range (Cooling)-10°C to 46°C
Noise Level (Indoor Unit)25 dB(A)

Summary

1. Safety Precautions

Symbols and General Warnings

Explains symbols and general warnings related to unit operation and safety.

R290 Refrigerant Hazards and Precautions

Highlights risks associated with R290 refrigerant, emphasizing fire and explosion hazards.

1. Safety Precautions

Installation and Service Personnel Qualifications

Emphasizes professional qualifications for installation, servicing, and repair by competent electricians.

Electrical Safety and Wiring Standards

Covers proper electrical installation, wiring, grounding, and circuit breaker usage.

1. Safety Precautions

Protective Zones and Leak Response

Defines protective zones and outlines immediate actions in case of refrigerant leakage.

Brazing Safety and Fire Prevention

Covers safe brazing practices and essential precautions to prevent fire hazards.

1. Safety Precautions

Pre-Installation and Relocation Safety

Provides safety guidelines before installing or relocating the unit, including environmental and handling precautions.

Pre-Electrical Work Safety Measures

Details essential safety measures before commencing electrical work, including breakers and grounding.

1. Safety Precautions

Pre-Test Run and R290 Handling

Outlines critical steps before test runs and emphasizes specific safety measures for R290 refrigerant handling.

1. Safety Precautions

Flammable Refrigerant System Checks

Details essential safety checks and procedures before working with flammable refrigerants.

Electrical Component Safety and Repair

Covers safety measures for replacing and repairing electrical components, including initial checks.

1. Safety Precautions

Electrical Work and Cable Integrity

Details safety considerations for electrical work, component replacement, and cable condition checks.

Leak Detection and Brazing Safety

Covers safe practices for using leak detectors and procedures for brazing in the presence of refrigerant.

1. Safety Precautions

Refrigerant Circuit Work and Charging

Outlines procedures for safely breaking into refrigerant circuits, charging, and handling refrigerant.

Safe Refrigerant Recovery Procedures

Details the essential steps and precautions for safe recovery of refrigerants from the system.

1. Safety Precautions

Decommissioning and Disposal Procedures

Provides instructions for safely decommissioning and disposing of the unit and its components.

2. Installation Location

Choosing the Outdoor Unit Installation Location

Guides selection of suitable outdoor unit placement, considering safety, environment, and accessibility.

2. Installation Location

Windy Location Installation and Ventilation

Provides guidance on installing units in windy areas to ensure proper ventilation and prevent malfunctions.

2. Installation Location

Unit Clearances and Dimensions

Specifies minimum installation clearances and dimensions for single and multiple outdoor unit configurations.

2. Installation Location

Enclosed Installation Space Precautions

Addresses safety and operational considerations for installing units in enclosed spaces with specific options.

3. Protective Zone

Protective Zone Definition and Restrictions

Defines the protective zone around the unit and lists forbidden openings and ignition sources within it.

3. Protective Zone

Protective Zone Dimensions by Installation Type

Specifies the required dimensions of the protective zone based on different installation scenarios and surrounding structures.

3. Protective Zone

Protective Zone for Front-Open Installations

Details protective zone dimensions for installations with front openings and side wall proximity.

4. Installing the Outdoor Unit

Outdoor Unit Installation Safety and Procedures

Details crucial safety warnings and procedures for securely installing the outdoor unit to prevent damage or injury.

5. Drainage Piping Work

Condensate Drain Connection Requirements

Specifies the correct method for connecting condensate drains, prohibiting direct connections to waste systems.

6. Water Piping Work

Water Piping Connection and Quality

Details procedures for connecting water pipes, recommended water quality, and safety warnings for hot water.

6. Water Piping Work

Water Flow Rate and Temperature Range Charts

Presents charts illustrating available ranges for water flow rate and return water temperature for heating and cooling.

7. Electrical Work

Outdoor Unit Electrical Wiring

Provides instructions for wiring the outdoor unit and emphasizes safety checks before powering up.

7. Electrical Work

Field Wiring Specs and High Voltage Warning

Details field electrical wiring requirements, cable specifications, and critical safety warnings for high voltage terminals.

8. Test Run

Pre-Test Run Checks and Insulation Resistance

Outlines essential checks before the test run, including insulation resistance measurements and power supply timing.

9. System Control

Outdoor Unit DIP Switch Settings

Explains how to set the refrigerant address using the DIP switch on the outdoor unit.

10. Handing Over to the User

User Information and Manual Retention

Lists key information to explain to the end-user and stresses the importance of keeping manuals.

12. Repair and Service

Refrigerant Circuit Repair Precautions

Warns against over-refrigerating the unit, which can lead to failure or fire hazards.

14. Recycling and Disposal

Unit and Refrigerant Disposal Procedures

Outlines proper methods for disposing of the unit and emphasizes safe refrigerant handling during disposal.

Safe Transportation for Disposal

Details critical safety requirements to follow when transporting the unit for disposal.

15. Specifications

Specifications and Serial Number

Lists technical specifications for outdoor models and provides information on locating the serial number.

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