Table of Contents
Related Manuals for Mitsubishi Electric MXZ-8B140
Summary of Contents for Mitsubishi Electric MXZ-8B140
- Page 1 Air-Conditioners OUTDOOR UNIT MXZ-8B140,160VA-A utilized R410A INSTALLATION MANUAL FOR INSTALLER For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner English unit.
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Page 2: Table Of Contents
Should the refrigerant leak and cause the concentration limit to be exceeded, case, this could lead to a serious impediment to securing product safety. • Use only accessories authorized by Mitsubishi Electric and ask a dealer or an hazards due to lack of oxygen in the room may result. -
Page 3: Installation Diagram & Parts
1. Safety precautions 1.3. Before electric work Caution: • Be sure to install circuit breakers. If not installed, electric shock may result. • When installing the power lines, do not apply tension to the cables. If the connections are loosened, the cables can snap or break and overheating or IMPORTANT fire may result. -
Page 4: Installation Location
The rated capacity should be determined by observing the table below. The unit’s quantities are limited in 2 to 8 units. For the next step, make sure that the total rated capacity selected will stay in a range as shown below. • MXZ-8B140 3.0~18.5kw • MXZ-8B160 3.0~20.2kw... - Page 5 3. Installation location Fig. 3-5 Fig. 3-6 Fig. 3-7 Fig. 3-8 1500 Fig. 3-9 Fig. 3-10 Fig. 3-11 Fig. 3-12 Fig. 3-13 Fig. 3-14 Fig. 3-15 Fig. 3-16 Fig. 3-17 3.4.2. When installing a single outdoor unit 3.4.3. When installing multiple outdoor units Minimum dimensions are as follows, except for Max., meaning Maximum dimen- Leave 10 mm space or more between the units.
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Page 6: Installing The Outdoor Unit
4. Installing the outdoor unit • Be sure to install the unit in a sturdy, level surface to prevent rattling noises during operation. (Fig. 4-1) (mm) <Foundation specifications> Foundation bolt M10 (3/8”) Thickness of concrete 120 mm Length of bolt 70 mm Weight-bearing capacity 320 kg... - Page 7 5. Installing the refrigerant piping 5.3. Addition of refrigerant If connecting an indoor unit with ø9.52 liquid pipes (model number 71 or more for M- and S-Series and model number 60 or more for P-Series), the additional refrigerant • Additional charging is not necessary for this unit if the total pipe length charging amount in Table 1 must be corrected (add the following ΔR value from the (b1+b2+a1+a2+a3+a4+a5+a6+a7+a8) does not exceed 40 m.
- Page 8 5. Installing the refrigerant piping Refrigerant collection when relocating the indoor and outdoor units (pump down) Connect a gauge manifold valve (pressure gauge included) to the service port near the gas stop valve of the outdoor unit so that the refrigerant pressure can be measured.
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Page 9: Airtight Test And Evacuation
5. Installing the refrigerant piping 5.6. Refrigerant piping (Fig. 5-8) Remove the service panel (three screws) and the front piping cover (two screws) and rear piping cover (two screws). Refrigerant pipes are protectively wrapped • The pipes can be protectively wrapped up to a diameter of ø90 before or after con- necting the pipes. -
Page 10: Drainage Piping Work
5. Installing the refrigerant piping Evacuation (Fig. 5-12) Evacuation should be made from the service port provided on the outdoor unit’s stop valve to the vacuum pump commonly used for both liquid or high-pressure pipe and gas or low-pressure pipe. (Make evacuation from both liquid or high-pressure pipe and gas or low-pressure pipe with the stop valve closed.) Remember: Never carry out air purge by refrigerant. - Page 11 7. Electrical work [2] Standard systems 2-1. Only 3-branch type 2-2. Only 5-branch type 2-3. 2-branch boxes (3-branch type) (3-branch type) (5-branch type) (3-branch type) (3-branch type) 2-4. 2 branch boxes (5-branch type, maximum 8 indoor units) (5-branch type) (5-branch type) 1.
- Page 12 7. Electrical work 7.1. Outdoor unit (Fig. 7-1) Remove the service panel. Wire the cables referring to the Fig. 7-1. ■ 8B140,160V Earth terminal Terminal block Clamp Service panel S1 S2 S3 Wire the cables so that they do not contact the center of the service panel or the gas valve.
- Page 13 7. Electrical work <Example> (In case of 2-branch boxes) Branch box*1 ■ 140-160V (5-branch type) Indoor unit TB3A A ROOM Outdoor unit TB2B TB3B Circuit B ROOM breaker TB3C C ROOM TB3D D ROOM TB3E E ROOM Indoor unit TB3A F ROOM TB3B G ROOM...
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Page 14: Test Run
8. Test run 8.1. Before test run ► After completing installation and the wiring and piping of the indoor and 3. After connecting the wires to the compressor, the compressor will start to warm outdoor units, check for refrigerant leakage, looseness in the power supply up after power is supplied. -
Page 15: Special Functions
9. Special Functions 9.1. Low noise mode (on-site modification) (Fig. 9-1) By performing the following modification, operation noise of the outdoor unit can be reduced by about 3-4 dB. CNDM The low noise mode will be activated when a commercially available timer or the contact input of an ON/OFF switch is added to the CNDM connector (option) on the control board of the outdoor unit. - Page 16 Please be sure to put the contact address/telephone number on this manual before handing it to the customer. HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Printed in Japan BG79U438L01...