Mitsubishi Electric MFZ-KA25VA Installation Manual
Floor type air-conditioner
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Also See for MFZ-KA25VA:
- Installation manual (144 pages) ,
- Operating instructions manual (112 pages) ,
- Service manual (52 pages)
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Floor Type Air-Conditioner
MFZ-KA25VA
MFZ-KA35VA
MFZ-KA50VA
INSTALLATION MANUAL
• This manual only describes the installation of indoor unit.
When installing the outdoor unit, refer to the installation
manual of outdoor unit.
IMPORTANT NOTES
TO COMPLY WITH THE REQUIREMENTS OF AUSTRALIAN STANDARD
AS/NZS 3000 ELECTRICAL INSTALLATIONS (Wiring Rules),
THE ELECTRICAL WIRING REQUIRED BETWEEN THE INDOOR AND
OUTDOOR UNITS MUST BE INSTALLED BY A LICENCED ELECTRICAL
CONTRACTOR.
CONTENTS
1. BEFORE INSTALLATION ..............................................................................2
2. INDOOR UNIT INSTALLATION .....................................................................4
3. FLARING WORK AND PIPE CONNECTION . ................................................7
4. TEST RUN .....................................................................................................8
5. PUMPING DOWN ..........................................................................................8
FOR INSTALLER
English
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Table of Contents
Related Manuals for Mitsubishi Electric MFZ-KA25VA
Summary of Contents for Mitsubishi Electric MFZ-KA25VA
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Page 1: Table Of Contents
Floor Type Air-Conditioner MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA INSTALLATION MANUAL English • This manual only describes the installation of indoor unit. When installing the outdoor unit, refer to the installation manual of outdoor unit. IMPORTANT NOTES TO COMPLY WITH THE REQUIREMENTS OF AUSTRALIAN STANDARD AS/NZS 3000 ELECTRICAL INSTALLATIONS (Wiring Rules), THE ELECTRICAL WIRING REQUIRED BETWEEN THE INDOOR AND OUTDOOR UNITS MUST BE INSTALLED BY A LICENCED ELECTRICAL CONTRACTOR. CONTENTS 1. BEFORE INSTALLATION ................2 2. INDOOR UNIT INSTALLATION ..............4 3. FLARING WORK AND PIPE CONNECTION ..........7 4. TEST RUN .....................8 5. PUMPING DOWN ..................8 6. CONNECTING AN INTERFACE TO THE AIR CONDITIONER (OPTION) ..9 FOR INSTALLER... -
Page 2: Before Installation
1. BEFORE INSTALLATION 1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY • Be sure to read “THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY” before installing the air conditioner. • Be sure to observe the warnings and cautions specified here as they include important items related to safety. • After reading this manual, be sure to keep it together with the OPERATING INSTRUCTIONS for future reference. WARNING (Could lead to death, serious injury, etc.) n Do not install the unit by yourself (user). n Attach the electrical cover to the indoor unit and the service panel Incomplete installation could cause fire or electric shock, injury due to to the outdoor unit securely. -
Page 3: Specifications
1-4. SPECIFICATIONS Pipe size Wire specifications *2 Power supply *1 Pipe length and height difference *5, *6 (thickness *3, *4) Model Rated Indoor/outdoor con- Max. pipe Max. height Insulation Frequency Liquid Voltage necting wire length difference thickness *7, *8 MFZ-KA25/35VA ø9.52 mm (0.8 mm) 20 m 12 m 4-core ø6.35 mm 230 V 50 Hz 8 mm 1.5 mm (0.8 mm) MFZ-KA50VA ø12.7 mm (1.0 mm) 30 m 15 m *1 Connect to the power switch which has a gap of 3 mm or more when open to *5 Be careful not to crush or bend the pipe during pipe bending. interrupt the source power phase. (When the power switch is shut off, it must *6 Refrigerant pipe bending radius must be 100 mm or more. *7 Insulation material : Heat resisting foam plastic 0.045 specific gravity interrupt all phases.) *8 Be sure to use the insulation of specified thickness. Excessive thickness may *2 Use wires in conformity with design 60245 IEC 57. -
Page 4: Indoor Unit Installation
2. INDOOR UNIT INSTALLATION 2-1. FIXING OF INDOOR UNIT MOUNTING BRACKET • Find a structural material (such as a stud) in the wall and fix bracket (7) horizontally with fixing screws (8). • To prevent bracket (7) from vibrating, be sure to install the fixing screws in the holes indicated by [->] in the illustration. For added support, fixing screws may also be installed in other holes. Wall 2-2. HOLE DRILLING ø65mm (KA25/35) 1) Determine the wall hole position. ø75mm (KA50) 5 - 7 mm 2) Drill a dia. 65 mm hole (dia. 75 mm for KA50). The outdoor side should be 5 to 7 mm lower than the indoor side. Outdoor 3) Insert wall hole sleeve (C). - Page 5 2-4. INDOOR UNIT INSTALLATION • Hook the top of the indoor unit on the indoor unit mounting bracket (7). • Use the included wood screws (9) and washer (10), and fasten the indoor unit at 2 locations( ) each at the top and the middle of the unit. 100 or 2-5. EMBEDDING THE INDOOR UNIT IN A 100 or more 100 or more Upper air outlet more Indoor WALL Receiver unit Grating • When installing a grating, use a grating with narrow upper and lower horizontal bars so that the airflow from the upper and lower air out- lets does not contact the bars. If the horizontal bars will block the lower air outlet, use a stand, etc., to adjust the height of the indoor unit. If the upper or lower air outlet is blocked, the air conditioner will not be able to cool or warm the room well.
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Page 6: Drain Piping
2-7. PIPE FORMING AND INSTALLATION Pipe Forming Refrigerant • Route the drain hose diagonally below the connecting pipes. piping • Make sure that the drain hose is not routed upward and that there Push Piping bent out- Piping are no waves in the hose. ward tape • Do not pull the hose when applying the tape. • Route the piping so that it does not project past the rear of the indoor unit. (Refer to the figure to the right.) Drain hose Connecting Pipe Installation • Install the connecting pipes so that the piping can move slightly to RIGHT DOWNWARD PIPING OTHER PIPING the front, back, left, and right. Pipe cover (4) Band (5) Band (5) • Be sure to insulate the connecting pipes and place them near the rear of the indoor unit so that they do not contact the front panel. • Be careful not to crush the connecting pipes when bending them. Remove the cover. -
Page 7: Flaring Work And Pipe Connection
2-9. FRONT PANEL INSTALLATION 1) Open the horizontal vane for the upper air outlet. 2) Fit the front panel onto the indoor unit from the front, and then push the upper and lower areas that are marked with arrows. 3) Push the areas below the upper air outlet and the areas above and below the lower air outlet that are marked with arrows. 4) After installing the front panel, install the 2 screws below the upper air outlet. 3. FLARING WORK AND PIPE CONNECTION 3-1. FLARING WORK Copper No good Good pipe 1) Cut the copper pipe correctly with pipe cutter. (Fig. 1, 2) 2) Completely remove all burrs from the cut cross section of pipe. (Fig. 3) • Put the end of the copper pipe to downward direction as you remove burrs in order to avoid to let burrs drop in the piping. Fig. 1 Tilted Uneven Burred 3) Remove flare nuts attached to indoor and outdoor units, then put them on pipe having completed burr removal. (Not possible to put them on Fig. 2 after flaring work.) 4) Flaring work (Fig. 4, 5). Firmly hold copper pipe in the dimension Flaring tool Copper pipe shown in the table. Select A mm from the table according to the tool Burr Spare reamer you use. Pipe cutter 5) Check • Compare the flared work with Fig. 6. Fig. 3 • If flare is noted to be defective, cut off the flared section and do flaring work again. -
Page 8: Test Run
4. TEST RUN 4-1. TEST RUN Make sure the following is done. • The area around the damper is free of any objects, and the movement of the damper is not blocked. • Panel is installed correctly. • Indoor and outdoor units are installed correctly, and power is supplied. 1) Press the E.O. SW once for COOL, and twice for HEAT operation. Test run will be performed for 30 minutes. If the left lamp of the operation indicator blinks every 0.5 seconds, inspect the indoor/outdoor unit connecting wire (A) for mis-wiring. After the test run, emergency mode (set temperature 24ºC) will Emergency start. operation switch 2) To stop operation, press the E.O. SW several times until all LED lamps turn off. Refer to operating in- (E.O. SW) structions for details. Checking the remote (infrared) signal reception Press the ON/OFF button on the remote controller (12) and check that an electronic sound is heard from the indoor unit. Press the ON/OFF button again to turn the air conditioner off. • Once the compressor stops, the restart preventive device operates so the compressor will not operate for 3 minutes to protect the air conditioner. 4-2. AUTO RESTART FUNCTION This product is equipped with an auto restart function. When the power supply is stopped during operation, such as during blackouts, the function automati- cally starts operation in the previous setting once the power supply is resumed. (Refer to the operating instructions for details.) Caution: • After test run or remote signal reception check, turn off the unit with the E.O. SW or the remote controller before turning off the power supply. Not do- ing so will cause the unit to start operation automatically when power supply is resumed. -
Page 9: Connecting An Interface To The Air Conditioner (Option)
6. CONNECTING AN INTERFACE TO THE AIR CONDITIONER (OPTION) Connecting an interface to the air conditioner • Connect an interface to the indoor control board of an air conditioner with a connecting cable. • Cutting or extending the connecting cable of the interface results in defects in connecting. Do not bundle the connecting cable together with power supply cord, indoor/outdoor connecting wire, and/or earth wire. Keep as much distance as possible between the connecting cable and those wires. • The thin part of the connecting cable should be stored and placed where customers cannot touch it. Thin part of the connecting cable. Place this part where customers cannot touch it. Room air conditioner Main body of an interface Connector Indoor control CN105 Thick part of the connecting cable board 1. Attach the mounting cord clamp (medium) to the connecting cable at 50 mm from the edge of an insulation coating part. Mounting cord clamp (medium) Insulation coating part 50 mm 2. Remove the front panel and the electrical cover. 3. Slide out the indoor control board, and connect the connecting cable to CN105 on the indoor control board. 4. Remove the screw (B) shown in the photo blow. Fix the mounting cord clamp (medium) , which has attached to the connecting cable, with the screw (B). 5. Secure the connecting cable with the clamp and hook according to the photo below. Mounting cord clamp (medium) - Page 12 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN JG79A144H06...