McQuay MLC025BR

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English

This manual provides the procedures of installation to ensure a safe and good standard of operation for the air

conditioner unit.

Special adjustment may be necessary to suit local requirements.

Before using your air conditioner, please read this instruction manual carefully and keep it for future reference.

INSTALLATION MANUAL

CEILING CONCEALED SPLIT TYPE AIR CONDITIONER

MODEL

COOLING UNIT

CC10C / ACC10C / MCC010C

SL10B / ALC10B / MLC010B

CC15C / ACC15C / MCC015C

SL15B / ALC15B / MLC015B

CC20C / ACC20C / MCC020C

SL20B / ALC20B / MLC020B

CC25C / ACC25C / MCC025C

SL25B / ALC25B / MLC025B

CC30C / ACC30C / MCC030C

SL30C / ALC30C / MLC030C

CC40C / ACC40C / MCC040C

SL40C / ALC40C / MLC040C

CC50C / ACC50C / MCC050C

SL50C / ALC50C / MLC050C

CC60C / ACC60C / MCC060C

SL60C / ALC60C / MLC060C

HEAT PUMP

CC10CR / ACC10CR / MCC010CR

SL10BR / ALC10BR / MLC010BR

CC15CR / ACC15CR / MCC015CR

SL15BR / ALC15BR / MLC015BR

CC20CR / ACC20CR / MCC020CR

SL20BR / ALC20BR / MLC020BR

CC25CR / ACC25CR / MCC025CR

SL25BR / ALC25BR / MLC025BR

CC30CR / ACC30CR / MCC030CR

SL30CR / ALC30CR / MLC030CR

CC40CR / ACC40CR / MCC040CR

SL40CR / ALC40CR / MLC040CR

CC50CR / ACC50CR / MCC050CR

SL50CR / ALC50CR / MLC050CR

CC60CR / ACC60CR / MCC060CR

SL60CR / ALC60CR / MLC060CR

Part No.: 08019011545

IM-CCC-0700-1

CCC-0700 (01~16) ENG* 2/1/01, 10:41 AM1

Table of Contents

Questions and Answers:

E
Edward OwensJul 25, 2025
What to do if my McQuay MLC025BR unit does not operate?
- J
  Jeffrey HolderJul 25, 2025
  If your McQuay Air Conditioner unit isn't operating, there are several things you can check: * First, ensure there isn't a power failure or a blown fuse by checking the power supply. * Make sure the power plug is securely connected. * Verify that the delay timer is set correctly. If the issue continues after checking these items, it is best to contact the air conditioner unit installer.
R
Ricardo ClarkJul 30, 2025
How to increase air flow in McQuay Air Conditioner?
- W
  Wesley CruzJul 30, 2025
  If the air flow from your McQuay Air Conditioner is too low, consider the following: 1. Clean the air filter to remove any accumulated dust or debris. 2. Ensure that all doors and windows are closed to maintain optimal cooling efficiency. 3. Check for and clear any obstructions blocking the air suction and discharge points. 4. Increase the regulated temperature, as a lower temperature setting can sometimes reduce airflow.
K
Kenneth LopezAug 4, 2025
Why is there condensation on my McQuay Air Conditioner?
- A
  akimAug 4, 2025
  Condensation on the front air grille of your McQuay indoor unit is typically due to air humidity or a too-low temperature setting after prolonged use. To address this, increase the temperature setting and operate the unit at a high fan speed.
B
Bradley SmithAug 9, 2025
How to eliminate bad odor from McQuay MLC025BR?
- J
  Jessica MontgomeryAug 9, 2025
  If your McQuay Air Conditioner discharge air flow has a bad odor, it's likely due to particles like cigarette smoke or perfume that have adhered to the coil. Cleaning the coil should remove these odors.
M
Margaret TuckerAug 14, 2025
Why is my McQuay MLC025BR hissing?
- D
  Diane KingAug 14, 2025
  The hissing sound you hear from your McQuay air conditioner during operation is caused by refrigerant fluid flowing into the evaporator coil.
S
swatkinsAug 19, 2025
Why McQuay MLC025BR Air Conditioner compressor does not operate after starting?
- B
  Breanna SantosAug 20, 2025
  The compressor on your McQuay air conditioner may take 3 to 4 minutes to start operating after the unit is turned on. Please wait for this period.

McQuay MLC025BR Specifications

General

Model	MLC025BR
Category	Air Conditioner
Refrigerant Type	R-410A
Phase	1
Voltage	208/230V
Cooling Capacity	25000 BTU/hr

Summary

SAFETY PRECAUTIONS

DO NOT INSTALL OR USE THE AIR CONDITIONER UNIT IN A LAUNDRY ROOM

Prohibition of installation and usage in a laundry room to prevent hazards.

INSTALLATION DIAGRAM

OUTLINE AND DIMENSIONS

INSTALLATION OF THE INDOOR UNIT

CEILING CONCEALED MOUNTING

Guidelines for secure ceiling mounting, including hanger use and wall support.

INSTALLATION OF THE OUTDOOR UNIT

Outdoor Unit SL Series Clearance

Specifies required clearances for the outdoor unit for optimal airflow and operation.

REFRIGERANT PIPING

Maximum Pipe Length and Number of Bends

Guidelines on pipe length and bends to maintain system capacity and reliability.

Piping Works and Flaring Technique

Procedures for correct piping connection, including flaring and brazing techniques.

PIPING CONNECTION TO THE UNITS

Electrical Connection

Details on wiring requirements, cable sizes, and conductor counts for electrical connections.

PURGING THE REFRIGERANT PIPING

ADDITIONAL CHARGE

Check refrigerant leak

Instructions for checking refrigerant leaks using detectors or by observing oil traces.

OVERALL CHECKING

STANDARD OPERATING CONDITION

Specifies standard operating temperature ranges for cooling and heat pump modes.

SERVICE AND MAINTENANCE

MAINTENANCE PROCEDURES

Detailed procedures and recommended periods for maintaining various parts of the unit.

TROUBLE SHOOTING

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