background image

Ceiling Cassette

Indoor Air Handler

Installation Manual

Models:

BM12MCC

BM18MCC

IMPORTANT NOTE:
Read this manual carefully before 

installing or operating your new air 

conditioning unit. Make sure to save this 

manual for future reference.
This manual only describes the outdoor 

unit of user’s. When using the indoor unit, 

refer to the user’s manual of indoor unit.

Summary of Contents for BM12MCC

Page 1: ...IMPORTANT NOTE Read this manual carefully before installing or operating your new air conditioning unit Make sure to save this manual for future reference This manual only describes the outdoor unit...

Page 2: ......

Page 3: ...ons 02 Warnings 04 Cautions 05 2 Installation Summary 06 3 Accessories 07 4 Indoor Unit Installation 09 5 Refrigerant Piping Installation 12 6 Connecting the Drain Pipe 14 7 Electrical Wiring Work 16...

Page 4: ...ep refrigerant concentration from exceeding allowable safety limits in the event of refrigerant leakage Contact the place of purchase for more information Excessive refrigerant in a closed ambient can...

Page 5: ...control board cover is fixed properly If control board cover is not fixed perfectly it can cause heat up at connection point of terminal fire or electrical shock If the supply cord is damaged it must...

Page 6: ...7 Test operation Installation Summary Page 6 Revised 5 14 2020 Installation Summary Check off when completed Is the indoor unit fixed firmly The unit may drop vibrate or make noise Is the gas leak te...

Page 7: ...in water leakage electrical shock fire or equipment failure Name Shape Quantity Remote control 1 Batteries 2 Tapping screws M3X10mm on some models 2 Metal champ on some models 1 Fixing screw for remot...

Page 8: ...he outdoor unit 1 Seal ring only heat pump models with the outdoor unit 1 Owner s Manual 1 Installation Manual 1 Paper pattern for installation on some models 1 NOTE All the pictures in this manual ar...

Page 9: ...oor and outdoor units does not exceed the allowable limit Refer to the installation manual of the outdoor unit Keep indoor unit outdoor unit inter unit wiring and remote control wiring at least 3 feet...

Page 10: ...ring section After making an opening in the ceiling it may be necessary to reinforce ceiling beams to keep the ceiling level and to prevent it from vibrating Consult the builder for details 3 Install...

Page 11: ...from the upper and lower sides of the hanger bracket 2 Securing the hanger bracket see figure below 2 Adjust the unit to the right position for installation Refer to the chapter Preparations before in...

Page 12: ...ng exposed to a fire Make sure there is no refrigerant gas leak A toxic gas may be released by the refrigerant gas leaking indoor and being exposed to flames from an area heater cooking stove etc Refe...

Page 13: ...nters of both flares and tighten the flare nuts 3 or 4 turns by hand Then tighten them fully with the torque wrenches Cut exactly at right angles Remove burrs Fig 5 3 Fig 5 6 Fig 5 4 Fig 5 5 Fig 5 7 F...

Page 14: ...than that of the discharge pipe of the unit Push the drain hose as far as possible over the drain socket and tighten the metal clamp securely Insulate the drain hose inside the building If the drain h...

Page 15: ...e drain socket does not have to withstand additional force To ensure a downward slope of 1 100 support the drain line every 3 When unifying multiple drain pipes install the pipes as shown in figure be...

Page 16: ...s or fire if gas leaks Water pipes no grounding effect if hard vinyl piping is used Telephone ground wires or lightning rods might cause abnormally high electric potential in the ground during lightni...

Page 17: ...indicate on the decoration panel to the indicate on the unit Attach the decoration panel to the unit with the supplied screws as shown in figure below 1 Intake grille 2 Grille hook Ensure that the gr...

Page 18: ...Unit see separate manual When you have finished installing all indoor air handlers proceed to installation of the outdoor unit Complete installation instructions and startup procedures are given in th...

Reviews: