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Summary of Contents for Mars Century Comfort-aire B-VMH09CU-1
- Page 1 INSTALLATION MANUAL Four-Way Cassette Model B-VMH09CU-1 B-VMH12CU-1 B-VMH18CU-1 517.787.2100 • www.marsdelivers.com...
- Page 2 Installation Manual - B-VMH09,12,18CU-1 If used as MULTI unit, please refer to the Installation & operation manuals packed with outdoor unit.
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Page 3: Table Of Contents
Installation Manual - B-VMH09,12,18CU-1 Install according to these installation instructions strictly. CONTENTS Page If installation is defective, it will cause water leakage, electrical PRECAUTIONS .................3 shock and fire. INSTALLATION INFORMATION ............4 When installing the unit in a small room, take measures to keep ACCESSORIES ...................5 refrigerant concentration from exceeding allowable safety limits... -
Page 4: Installation Information
Installation Manual - B-VMH09,12,18CU-1 If the refrigerant leaks during installation, ventilate the area There are flammable materials or gas. immediately. Toxic gas may be produced if the refrigerant There is acid or alkaline liquid evaporating. comes into contact with fire. Other special conditions. -
Page 5: Accessories
Installation Manual - B-VMH09,12,18CU-1 ACCESSORIES For the following items, take special care during construction and check after installation is finished Check that the following accessories are included with your unit. √ Tick when checked Is the indoor unit fixed firmly? The unit may drop,vibrate or make noise. -
Page 6: Indoor Unit Installation
Installation Manual - B-VMH09,12,18CU-1 INDOOR UNIT INSTALLATION Selecting installation site When the conditions in the ceiling are exceeding 30 C / 86 F and a relative humidity of 80%, or when fresh air is inducted into the ceiling, 1000/39.4in 1000/39.4in additional insulation is required (minimum 10 mm / 0.4in thickness, polyethylene foam). - Page 7 Installation Manual - B-VMH09,12,18CU-1 Preparations before installation Make the ceiling opening needed for installation where applicable.(For existing ceilings.) Relation of ceiling opening to unit and suspension bolt - Create the ceiling opening required for installation.From the side position. of the opening to the casing outlet, implement the refrigerant and drain piping and wiring for remote controller (unnecessary for wireless type).
- Page 8 Installation Manual - B-VMH09,12,18CU-1 Install the indoor unit 4) Check if the unit is horizontally levelled. - Do not install the unit tilted. The indoor unit is equipped with a built-in drain pump and float switch. (If the unit is tilted against When installing optional accessories, read also the installation the direction of the condensate flow (the drain piping side is manual of the optional accessories.
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Page 9: Outdoor Unit Installation
Installation Manual - B-VMH09,12,18CU-1 Figure of body size OUTDOOR UNIT INSTALLATION Precautions for selecting the location 1) Choose a place solid enough to bear the weight and vibration of the unit, where the operation noise will not be amplified. 2) Choose a location where the hot air discharged from the unit or the operation noise will not cause a nuisance to the neighbors of the user. - Page 10 Installation Manual - B-VMH09,12,18CU-1 2.4 Outdoor unit installation 2.3 Installation guidelines Where a wall or other obstacle is in the path of outdoor unit 1) Installing outdoor unit inlet or outlet airflow, follow the installation guidelines below. When installing the outdoor unit, refer to "Precautions for For any of the below installation patterns, the wall height on the selecting the location"...
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Page 11: Install The Refrigerant Pipe
Installation Manual - B-VMH09,12,18CU-1 INSTALL THE REFRIGERANT PIPE CAUTION All field piping must be provided by a licensed refrigeration Oil traps technician and must comply with the relevant local and If the indoor unit is installed higher than the outdoor unit: national codes. - Page 12 Installation Manual - B-VMH09,12,18CU-1 3.1 Flaring the pipe end 3.3 Installation of the throttle. (For some models) 1) Cut the pipe end with a pipe cutter. 2) Remove burrs with the cut surface facing downward so that the chips do not enter the pipe. Cut exactly at right angles.
- Page 13 Installation Manual - B-VMH09,12,18CU-1 3.4 Purging air and checking gas leakage Pipe length Up to 15m/49.2ft More than 15m/49.2ft When piping work is completed, it is necessary to purge the Run time Not less than 10 min Not less than 15min air and check for gas leakage.
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Page 14: Connect The Drain Pipe
Installation Manual - B-VMH09,12,18CU-1 2) Be sure to insulate both the gas and liquid piping. Use CONNECT THE DRAIN PIPE separate thermal insulation pipes for gas and liquid refrigerant pipes. See the figure below. 4.1 Installation of drain piping Install the drain piping as shown in figure below and take measures Inter-unit wire against condensation. - Page 15 Installation Manual - B-VMH09,12,18CU-1 4.3 How to perform piping 4.4 Testing of drain piping After the piping work is finished, check that drainage flows smoothly. 1~1.5m ≤300/11.8in Add approximately 1L of water gradually through the air discharge 3~5ft outlet. Method of adding water (see the figure below) 106/4.2in 75/3in 65/2.6in...
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Page 16: Electric Wiring Work
Installation Manual - B-VMH09,12,18CU-1 How to connect wiring Remove the control box lid of the indoor unit. Remove the cover of the outdoor unit. Follow the "Wiring diagram label" attached to the indoor unit's control box lid to wire the outdoor unit, indoor unit and the remote controller. Securely fix the wires with a field supplied clamp. -
Page 17: Installation Of The Decoration Panel
Installation Manual - B-VMH09,12,18CU-1 INSTALLATION OF THE DECORATION PANEL - After installing the decoration panel, ensure that there is no space between the unit body and decoration panel. Detach the intake grille. Otherwise air may leak through the gap and cause dewdrop. - Slide the 2 grille hooks toward the middle of the decoration (See figure below) panel. -
Page 18: Test Operation
Installation Manual - B-VMH09,12,18CU-1 Close the intake grille, and close the 2 grille hooks. TEST OPERATION Make sure the control box lids are closed on the indoor and outdoor units. Refer to ''For the following items, take special care during construction and check after installation is finished'' on page 2. - Page 19 Installation Manual - B-VMH09,12,18CU-1 THIS PAGE INTENTIONALLY LEFT BLANK.
- Page 20 10/2022...
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