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Midea MKH3-700R3 User Manual

Midea MKH3-700R3
57 pages
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Midea AC Fan Coil Unit
2
nd
generation Two Pipe Ceiling&Floor Series
Technical Service Manual
Midea reserves the right to discontinue, or change specification or designs at any time without notices and without incurring obligations.
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Midea MKH3-700R3 Specifications

General IconGeneral
BrandMidea
ModelMKH3-700R3
CategoryAir Conditioner
LanguageEnglish

Summary

Features and Compliance

CE Certification

Unit meets the latest CE certification requirements for AC fan motor.

Model Nomenclature

Technical Specifications

Cooling, Heating, and Physical Specs

Covers cooling/heating performance, dimensions, weights, and sound levels for different models.

Service Space Requirements

Cased Type Clearances

Minimum installation clearances (a, b, c) for Cased Type units.

Uncased Type Clearances

Minimum installation clearances (a, b, c) for Uncased Type units.

Wiring Diagrams and Electrical Safety

Electrical Connection Safety Warning

Critical safety precautions for electrical connections to prevent damage or injury.

Installation Guide

Transport and Storage Procedures

Guidelines for safe transport, handling, unpacking, and storage of the unit.

Unit Installation Requirements

Details essential space requirements for installing the unit, including clearances and access.

Unit Installation Steps

Installation Space and Casing Removal

Checks for required installation space and procedures for removing the unit casing.

Post-Installation Procedures

Essential steps after installation, including air removal and drain system setup.

Ceiling Mounting Methods

Pipe and Drain Connections

Condensate Drain System Setup

Electrical Connection Guidelines

Power Supply and Safety Precautions

Ensures correct power supply, safety measures like leakage protection, grounding, and automatic switches.

Wiring and Cable Specifications

Specifies power cord requirements, routing, securement, and wire diameter selection.

Wiring and Startup Procedures

Wiring Standards and Cable Selection

Details voltage, frequency, cable sections, and proper wiring connections according to diagrams.

Startup Commissioning and Checks

Ensures skilled personnel perform commissioning and preliminary checks before unit operation.

Maintenance Procedures Overview

General Maintenance Safety

Highlights safety precautions for all maintenance work, including power disconnection and protective gear.

Scheduled Maintenance Tasks

Outlines monthly checks for filters and semi-annual checks for heat exchangers and drain tubes.

Water System Maintenance

Procedures for releasing air from the water system and draining it seasonally.

Electrical Circuit Maintenance

Recommended checks for electrical contacts, terminals, and power consumption.

Component Replacement Guide

Motor Replacement Procedure

Detailed steps for motor removal, filter access, and casing disassembly.

Heat Exchanger Replacement Procedure

Instructions for replacing the heat exchanger, covering unit unplugging, water shut-off, and component removal.

Troubleshooting Common Issues

Resolving Unit Error Codes

Addresses issues like safety device trips, switch malfunctions, and controller errors.

Troubleshooting Performance Problems

Diagnostic steps for units not running or providing insufficient cooling/heating.

Non-Unit Related Faults

Fan Performance and Internal Issues

Addresses fan speed/direction inconsistencies, white fog, dust, dirt, or odors within the unit.

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