Mitsubishi Electric MXZ-3B24NA Installation Manual
Split-type air-conditioner
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Also See for MXZ-3B24NA:
- Installation manual (32 pages) ,
- Service manual (155 pages) ,
- Installation manual (24 pages)
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Split-type Air-Conditioner
MXZ-3B24NA
MXZ-3B30NA
MXZ-4B36NA
Installation Manual
• This manual only describes the installation of outdoor unit.
When installing the indoor unit, refer to the installation manual of indoor unit.
Any structural alterations necessary for installation must comply with local build-
ing code requirements.
Notice d'installation
• Cette notice ne décrit que l'installation de l'appareil extérieur.
Lors de l'installation de l'appareil intérieur, consultez la notice d'installation de cet
appareil.
Toute altération structurelle requise pour l'installation doit être conforme aux exi-
gences du code du bâtiment local.
Manual de instalación
• En este manual sólo se describe la instalación de la unidad exterior.
Para instalar la unidad interior, consulte el manual de instalación de dicha uni-
dad.
Cualquier modificación estructural necesaria para llevar a cabo la instalación de-
berá cumplir las normas de edificación locales.
For INSTALLER
Destinée à l'INSTALLATEUR
Para el INSTALADOR
English
Français
Español
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Summary of Contents for Mitsubishi Electric MXZ-3B24NA
- Page 1 Split-type Air-Conditioner MXZ-3B24NA MXZ-3B30NA MXZ-4B36NA For INSTALLER Installation Manual English • This manual only describes the installation of outdoor unit. When installing the indoor unit, refer to the installation manual of indoor unit. Any structural alterations necessary for installation must comply with local build- ing code requirements. Notice d’installation Destinée à l’INSTALLATEUR Français • Cette notice ne décrit que l’installation de l’appareil extérieur. Lors de l’installation de l’appareil intérieur, consultez la notice d’installation de cet appareil. Toute altération structurelle requise pour l’installation doit être conforme aux exi- gences du code du bâtiment local. Manual de instalación Para el INSTALADOR Español • En este manual sólo se describe la instalación de la unidad exterior. Para instalar la unidad interior, consulte el manual de instalación de dicha uni- dad.
- Page 2 If there is defect in the drainage/piping work, water could drop from the unit, soaking and damaging household goods. 1-2. SPECIFICATIONS Power supply Pipe length and height difference *1, *2, *3, *4, *5, *6 Model Max. pipe length per indoor Max. no. of bends per in- Refrigerant adjustment A Rated Voltage Frequency Max. height difference *7 unit / for multi-system door unit / for multi system MXZ-3B24NA MXZ-3B30NA 208 / 230 V 60 Hz 25 m (82 ft) / 70 m (230 ft) 15 m (49 ft) 25 / 70 20 g/m (1.08 oz each 5 ft) MXZ-4B36NA *1 Never use pipes with thickness less than specified. The pressure resist- *7 If the outdoor unit is installed higher than the indoor unit, max. height differ- ance will be insufficient. ence is reduced to 10 m (33 ft). *2 Use a copper pipe or a copper-alloy seamless pipe. *8 If pipe length exceeds 40 m (131 ft), additional refrigerant (R410A) charge *3 Be careful not to crush or bend the pipe during pipe bending.
- Page 3 1-3. SELECTING OPTIONAL DIFFERENT-DIAMETER JOINTS If the diameter of connection pipe does not match the port size of outdoor unit, use optional different-diameter joints according to the following table. (Unit: mm (inch)) Port size of outdoor unit Optional different-diameter joints (port size of outdoor unit → diameter of connection pipe) 6.35 (1/4) → 9.52 (3/8) : PAC-493PI MXZ-3B MXZ-4B Liquid / Gas 9.52 (3/8) → 12.7 (1/2) : MAC-454JP 9.52 (3/8) → 15.88 (5/8) : PAC-SG76RJ A UNIT 6.35 (1/4) / 12.7 (1/2) 12.7 (1/2) → 9.52 (3/8) : MAC-A455JP 12.7 (1/2) → 15.88 (5/8) : MAC-A456JP B - C UNIT B - D UNIT 6.35 (1/4) / 9.52 (3/8) Refer to the installation manual of indoor unit for the diameter of connection pipe of indoor unit. 1-4. SELECTING THE INSTALLATION LOCATION • Where it is not exposed to strong wind. Note: • Where airflow is good and dustless. When operating the air conditioner in low outside temperature, be sure to • Where rain or direct sunshine can be avoided as much as possible.
- Page 4 1-5. INSTALLATION DIAGRAM PARTS TO BE PROVIDED AT YOUR SITE After the leak test, apply insulat- ing material tightly so that there is (A) Power supply cord* no gap. (B) Indoor/outdoor unit connecting wire* (C) Extension pipe When the piping is to be at- tached to a wall containing metals (D) Wall hole cover (tin plated) or metal netting, use (E) Piping tape a chemically treated wooden piece 20 mm (25/32 in.) or thicker Extension drain hose (or soft PVC between the wall and the piping hose, 15 mm (19/32 in.) inner or wrap 7 to 8 turns of insulation diameter or hard PVC pipe VP16)
- Page 5 • Refer to the figure in the right for concrete foundation. • Do not use the drain socket and the drain caps in the cold region. Drain may freeze and it makes the fan stop. Anchor leg (19-11/16) Fix here with M0 bolts. Anchor both length Anchor both pitch Make the setting depth deeper. (Unit: mm (inch)) Make with wider. 2-2. CONNECTING WIRES FOR OUTDOOR UNIT • Be sure to use special circuits for room air conditioner. ELECTRICAL SPECIFICATIONS • Wiring work should be based on applicable technical standards. OUTDOOR UNIT MXZ-3B24NA MXZ-3B30NA MXZ-4B36NA • Wiring connections should be made following the diagram. Power supply (V, PHASE, Hz) 208/230, 1, 60 • Screws should be tightened so they won’t loosen. Max. Fuse size (time delay) (A) Min. Circuit Ampacity (A) Fan motor (F.L.A) 0.93 0.93 (R.L.A) 4.4 Compressor (L.R.A) Indoor unit-Remote controller : (Wireless)
- Page 6 3. FLARING WORK AND PIPE CONNECTION 3-1. FLARING WORK 1) Cut the copper pipe correctly with pipe cutter. (Fig. 1, 2) No good Good 2) Completely remove all burrs from the cut cross section of pipe. (Fig. 3) Copper pipe • Aim the copper pipe downward while removing burrs Copper pipe Burr Spare reamer to prevent burrs from dropping in the pipe. Pipe cutter 3) Remove flare nuts attached to indoor and outdoor units, Tilted Uneven Burred then put them on pipe having completed burr removal. (Not possible to put them on after flaring work.) Fig. Fig. 2 Fig. 3 4) Flaring work (Fig. 4, 5). Firmly hold copper pipe in the dimension shown in the table. Select A mm from the Flaring tool Inside is shin-...
- Page 7 4-2. GAS CHARGE Perform gas charge to unit. Stop valve 1) Connect gas cylinder to the service port of stop valve. Liquid 2) Perform air purge of the pipe (or hose) coming from refrigerant gas cylinder. Union pipe 3) Replenish specified amount of the refrigerant, while operating the air conditioner for cooling. Union Indoor Outdoor Note: unit unit In case of adding refrigerant, comply with the quantity specified for the refrigerating cycle. Union Stop valve with Gas CAUTION: service port Union pipe When charging the refrigerant system with additional refrigerant, be sure to use liquid refriger- ant. Adding gas refrigerant may change the composition of the refrigerant in the system and Refrigerant gas D unit is for cylinder affect normal operation of the air conditioner. Also, charge the liquid refrigerant slowly, otherwise 4B36NA only...
- Page 8 5. RELOCATION AND MAINTENANCE 5-1. PUMPING DOWN When relocating or disposing of the air conditioner, pump down the system following the procedure below so that refrigerant is not released into the atmosphere. 1) Connect the gauge manifold valve to the service port of the stop valve on the gas pipe side of the outdoor unit. 2) Fully close the stop valve on the liquid pipe side of the outdoor unit. 3) Close the stop valve on the gas pipe side of the outdoor unit almost completely so that it can be easily closed fully when the pressure gauge shows 0 MPa [Gauge] (0 lbf/in. [0 kgf/cm 4) Start the emergency COOL operation on all the indoor units. To start the emergency operation in COOL mode, disconnect the power supply plug and/or turn off the breaker. After 15 seconds, connect the power supply plug and/or turn on the breaker, and then press the E.O. SW once. (The emergency COOL operation can be performed continuously for up to 30 minutes.) 5) Fully close the stop valve on the gas pipe side of the outdoor unit when the pressure gauge shows 0.05 to 0 MPa [Gauge] (approx. 7.25 to 0 lbf/in [0.5 to 0 kgf/cm 6) Stop the emergency COOL operation. To stop operation, press the E.O. SW several times until all LED lamps turn off. Refer to operating instructions for details. WARNING When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes. The compressor may burst if air etc. get into it. En-7...