Mitsubishi Electric MXZ-2A20NA Installation Manual

Split-type air conditioners
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MITSUBISHI
AV_
ELECTRIC
Split-type Air-Conditioner
MXZ-2A20NA
INSTALLATION MANUAL
Refer to the installation
manual
of each indoor unit for indoor unit in-
stallation.
i!
ii i !
....
This manual mentions how to install only the outdoor unit MXZ-2A20NA.
As for the way of installation for indoor unit, please refer to the installation manual
being attached each indoor unit.
The installation manual details the suggested installation method.
Any structural alterations necessary for installation must comply with local building
code requirements.
1. BEFORE INSTALLATION ..............................................................................
2
2. OUTDOOR UNIT INSTALLATION .................................................................
5
3. FLARING WORKAND
PIPE CONNECTION .................................................
7
4. PURGING PROCEDURES,
LEAK TEST, AND TEST RUN ........................... 8
FOR INSTALLER
JG79A039H01
En.indd
1
5/9/2008
2:23:40
PM

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Summary of Contents for Mitsubishi Electric MXZ-2A20NA

  • Page 1 ! ..This manual mentions how to install only the outdoor unit MXZ-2A20NA. As for the way of installation for indoor unit, please refer to the installation manual being attached each indoor unit. The installation manual details the suggested installation method.
  • Page 2: The Following Should Always Be Observed For Safety

    Frequency unit / for multi-system height difference door unit / for multi system 208/ MXZ-2A20NA 60 Hz 25 m (82 ft) / 50 m (164 ft) 15 m (49 ft) 25 / 70 20 gim (1.06 oz each 5 ft) 230 V "1 Never use pipes with thickness less than specified.
  • Page 3: Selecting The Installation Location

    1-4. SELECTING PIPE SIZE AND OPTIONAL DIFFERENT-DIAMETER JOINTS The diameter of connection pipes differs according to the type and capacity of indoor units. Match the diameters of connection pipes for indoor and outdoor units according to the following table. • If the diameter of connection pipes does not match the diameter of pipe end connections, use optional different-diameter...
  • Page 4: Installation Diagram

    Open as a rute More than 500 mm (J)/" COOL operation for 30 minutes (K) Wall hole sleeve MXZ-2A20NA and pump down before removing (19.69 in.) if the front Soft PVC hose, 15 mm (19/32 in.) the old air conditioner.
  • Page 5 • Wiring connections should be made following the diagram. • Screws should be tightened so they won't loosen. ELECTRICAL SPECIFICATIONS OUTDOOR UNIT MXZ-2A20NA Power supply (V, PHASE, 208/230, 1, 60 Max. Fuse size (time delay) (A) Min. Circuit Ampacity 0.96 Fan motor (EL.A)
  • Page 6: Flaring Work

    3-1. FLARING WORK 1 ) Cut the copper pipe correctly with pipe cutter. (Fig. 1, 2) Good No good 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 pipe remove burrs in order to avoid to let burrs drop in the piping.
  • Page 7: Gas Charge

    4-1. PURGING PROCEDURES AND LEAK TEST -0.101MPa Compound pressure Stop valve cap [-760 mmHg gauge (for R410A) *4 to 5 turns (Torque 19.6 to 1 ) Remove service port cap of stop valve on the side of the outdoor unit (-30 in.Hg)] 29.4 N.m, 200 to Pressure gauge...
  • Page 8 4-3. TEST RUN • Be sure to perform the test run for each unit. Make sure each indoor unit operates properly following the installation manual attached to the unit. • If you perform the test run for all indoor units at once, you cannot detect any erroneous connection, if any, of the refrigerant pipes and the indoor/outdoor unit connecting wires.
  • Page 9 _1 MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN JG79A039H01 JG79A039H01 cover4.indd 5/9/2008 2:23:16...

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