MAXA MI26A1 Technical & Service Manual
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MAXA MI26A1 Technical & Service Manual

Dc fan coil unit wall-mounted
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MAXA DC Fan Coil Unit
Wall-mounted
Technical Service Manual
MI26A1
MI35A1
MI42A1
MAXA reserves the right to discontinue, or change specification or designs at any time without notices and without incurring obligations.

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Summary of Contents for MAXA MI26A1

  • Page 1 MAXA DC Fan Coil Unit Wall-mounted Technical Service Manual MI26A1 MI35A1 MI42A1 MAXA reserves the right to discontinue, or change specification or designs at any time without notices and without incurring obligations.

  • Page 2: Table Of Contents

    MAXA DC Fan Coil Unit Wall-mounted DC Fan Coil Unit 1.External Appearance..............2 2.Features ..................3 3. Product lineup ................3 4. Accessories ................... 4 5. Specifications ................5 6. Capacity table ................9 7. Dimension..................36 8. Sound Levels ................41 9.

  • Page 3: External Appearance

    MAXA DC Fan Coil Unit 1. External Appearance type panel...

  • Page 4: Features

     Excellent efficiency MAXA DC FCU adopt the brushless DC motor, the DC motor efficiency is up to 90%. The power consumption of DC FCU can be reduced by more than 30% in contrast to the corresponding AC FCU. DC brushless motor The motor adopts fully enclosed structure design;...

  • Page 5: Accessories

    MAXA DC Fan Coil Unit 4. Accessories 4.1 Standard accessories Accessory name Qty. Shape Usage Owner’s & installation manual Installation guide Screw ST3.9x25 for installation Screw the installation board board Plastic expanded tube Wrapping tape Drain pipe Wall conduit cover...

  • Page 6: Specifications

    MAXA DC Fan Coil Unit 5. Specifications MI26A1 MI35A1 Model V/Ph/H Power supply 492/454/400 825/689/590 Air flow (H/M/L) 289/267/235 485/405/347 Capacity (H/M/L) 2.7/2.59/2.39 3.81/3.3/2.88 Water flow rate(H/M/L) 0.48/0.46/0.42 0.67/0.57/0.51 Cooling Water pressure 31.61/28.63/25.3 56.75/41.23/33.0 drop(H/M/L) Power input(H/M/L) 13/11/10 34/22/15 Capacity (H/M/L) 2.94/2.8/2.58...
  • Page 7 MAXA DC Fan Coil Unit (specifications) MI42A1 Model Power supply V/Ph/Hz 220-240/1/50 862/741/634 Air flow (H/M/L) 507/435/372 Capacity (H/M/L) 4.47/3.98/3.48 Water flow rate(H/M/L) 0.77/0.68/0.61 Cooling Water pressure drop(H/M/L) 41.17/33.54/27.05 Power input(H/M/L) 26/18/13 Capacity (H/M/L) 4.84/4.23/3.62 Water flow rate(H/M/L) 0.84/0.73/0.64 Heating Water pressure drop(H/M/L) 36.82/33.83/26.26...
  • Page 8 MAXA DC Fan Coil Unit Model MI 26A1 35A1 H/M/L 425/410/320 680/550/504 Air flow H/M/L 250/241/188 400/324/297 Capacity H/M/L 2.2/2.2/1.97 3.08/2.90/2.66 Cooling Water flow rate Water pressure drop 23.1 Capacity H/M/L 3.02/2.85/2.35 4.34/3.77/3.35 Heating Water pressure drop Power supply V/Ph/Hz Power input 10.7...
  • Page 9 MAXA DC Fan Coil Unit Model MI 42A1 H/M/L 850/692/586 Air flow H/M/L 500/407/345 Capacity H/M/L 4.07/3.78/3.05 Cooling Water flow rate Water pressure drop 34.9 Capacity H/M/L 5.69/4.14/3.63 Heating Water pressure drop 29.7 Power supply V/Ph/Hz 220-240/1/50 Power input Sound pressure level...

  • Page 10: Capacity Table

    MAXA DC Fan Coil Unit 6. Capacity Table Cooling Capacity Table (S Panel) MI26A1 Indoor Indoor temperature (D.B.) EWT ΔT temp (W.B.) WF WPD WF WPD WF WPD WF WPD ℃ ℃ ℃ 2.34 1.79 0.67 28.87 2.32 2.05 0.67 28.53 2.33 2.32 0.67 28.71 2.56 2.56 0.73 33.83 2.81 2.81 39.57...
  • Page 11 MAXA DC Fan Coil Unit (Continued) MI26A1 Indoor Indoor temperature (D.B.) EWT ΔT temp (W.B.) WF WPD WF WPD WF WPD WF WPD WF WPD ℃ ℃ ℃ 1.05 1.05 7.05 1.31 1.31 0.37 10.2 1.56 1.56 0.45 13.76 1.81 1.81 0.52 17.73 2.06 2.06 0.59 22.1 1.31 1.02 0.38 10.31 1.39 1.32...
  • Page 12 MAXA DC Fan Coil Unit MI35A1 Indoor Indoor temperature (D.B.) EWT ΔT temp (W.B.) WF WPD WF WPD WF WPD WF WPD ℃ ℃ ℃ 3.17 2.47 0.91 48.64 3.16 2.86 0.91 48.48 3.26 3.26 0.93 51.12 3.58 3.58 1.03 60.26 3.93 3.93 1.13 70.8...
  • Page 13 MAXA DC Fan Coil Unit (Continued) MI35A1 Indoor Indoor temperature (D.B.) EWT ΔT temp (W.B.) WF WPD WF WPD WF WPD WF WPD ℃ ℃ ℃ 1.46 1.46 0.42 12.32 1.82 1.82 0.52 17.88 2.17 2.17 0.62 24.26 2.52 2.52 0.72 31.43 2.87 2.87 0.83 39.36...
  • Page 14 MAXA DC Fan Coil Unit MI42A1 Indoor Indoor temperature (D.B.) EWT ΔT temp (W.B.) WF WPD WF WPD WF WPD WF WPD ℃ ℃ ℃ 3.76 2.88 1.08 91.07 3.74 3.31 1.08 90.3 3.79 3.77 1.09 92.54 4.15 4.15 1.2 108.4 4.54 4.54 1.31 127.33...
  • Page 15 MAXA DC Fan Coil Unit (Continued) MI42A1 Indoor Indoor temperature (D.B.) EWT ΔT temp (W.B.) WF WPD WF WPD WF WPD WF WPD ℃ ℃ ℃ 0.49 22.21 2.11 2.11 0.61 32.17 2.52 2.52 0.72 43.58 2.93 2.93 0.84 56.41 3.33 3.33 0.96 70.59...
  • Page 16 MAXA DC Fan Coil Unit Heating Capacity Table (S Panel) MI26A1 Indoor temperature (D.B.) ΔT ℃ ℃ 2.87 13.92 2.59 0.45 11.66 2.31 9.59 2.03 0.35 2.78 9.71 0.36 2.22 0.32 6.62 1.95 0.28 5.27 2.62 0.28 5.38 2.33 0.25 4.43...
  • Page 17 MAXA DC Fan Coil Unit MI35A1 Indoor temperature (D.B.) ΔT ℃ ℃ 4.05 25.34 3.66 0.63 21.23 3.27 0.57 17.45 2.88 14.01 3.93 0.57 17.62 3.54 0.51 14.68 3.15 0.45 11.99 2.76 9.55 3.69 9.69 0.36 7.98 0.31 6.42 2.51 0.27...

  • Page 18: Dimension

    MAXA DC Fan Coil Unit 7. Dimension...
  • Page 19 MAXA DC Fan Coil Unit 7.2 S type panel MI35A1 MI42A1...

  • Page 20: Sound Levels

    MAXA DC Fan Coil Unit 8. Sound Levels Noise level under three speeds of fan [dB(A)] Unit Number Model MI26A1 MI35A1 MI42A1 9. Service Spaces...

  • Page 21: Wiring Diagrams

    MAXA DC Fan Coil Unit 10. Wiring Diagrams FOR NETWORK ADDRESS ENC2 SW1 SWITCH MODEL DIP SW1 SETTING “0~F” of the ENC2 and “ON/OFF” of the SW1 mean the addresses of FP-42.5BM the different units, respectively. 1 2 3 4...

  • Page 22: Trouble-Shooting

    MAXA DC Fan Coil Unit 11. Trouble shooting Malfunction code Malfunction Water-level alarm malfunction T2 evaporator sensor malfunction T1 evaporator sensor malfunction EE: Water-level alarm malfunction Water-level switch connecting wire Exist Reconnect and ensure that between switch and main board gets the connection is reliable.
  • Page 23 MAXA DC Fan Coil Unit E3: T1 evaporator sensor malfunction. Exist T1 connecting wire between sensor and Reconnect and ensure that the mainboard gets loose. connection is reliable. Exist Temperature sensor is short-circuited or Replace sensor. punctured. Reinstall chip, or install other chip...

  • Page 24: Installation

    MAXA DC Fan Coil Unit 12. Installation 12.1 Installation Attention ※ Warning: Be sure only trained and qualified service personnel to install, repair or service the equipment.  Improper installation, repair, and maintenance may result in electric shocks, short-circuit, leaks, fire or other damage to the equipment.
  • Page 25 MAXA DC Fan Coil Unit ※ Caution: Ground the air conditioner. Do not connect the ground wire to gas or water pipes, lightning rod or a telephone ground wire. Incomplete grounding may result in electric shocks. Be sure to install an earth leakage breaker.
  • Page 26 MAXA DC Fan Coil Unit 12.2 Inspecting and Handling the unit At delivery, the package should be checked and any damage should be reported immediately to the carrier claims agent. When handling the unit, take into account the following: Fragile, handle the unit with care.
  • Page 27 MAXA DC Fan Coil Unit 500/600 type: I. Fix the installation board.  Install the installation board horizontally on structural parts in the wall with the spaces provided around the plate.  In case of brick, concrete or similar type walls, make 5mmdia, holes in the wall. Insert clip anchors for appropriate mounting screws.
  • Page 28 MAXA DC Fan Coil Unit When connection extension drain hose, insulate the connecting part of extension drain hose with a shield pipe. II. Connection pipe  For the left-hand and rear-left-hand piping, install the piping as shown. Bend the connective pipe to be...
  • Page 29 MAXA DC Fan Coil Unit  Fix the end of the connective pipe. Caution: Connect the indoor unit first then the outdoor unit and bend and arrange the pipe carefully.  Do not allow the piping to let out from the back of the indoor unit.
  • Page 30 MAXA DC Fan Coil Unit Note: Please refer to installation instructions for the water piping conection of the air conditioner that with throttle device inside. 3-way valve discharge (4.ports) valve conector  At the first debugging, completely expel air from coils via expelling valve.
  • Page 31 MAXA DC Fan Coil Unit 12.5.1 Terminal Board Diagram Please refer to the indoor unit wiring diagram for the wiring. Note: The air-conditioners can connect with Central Control Monitor (CCM). Before operation, please wiring correctly and set system address and network address of indoor units.
  • Page 32 MAXA DC Fan Coil Unit Insert 2 & 3 together is OK The reserved wire control function is indicated in broken line table, users can purchase the wire controller when necessary. 12.5.2 Network address set Every air-conditioner in network has only one network address to distinguish each other. Address code of...
  • Page 33 ® C O N DITIO NIN G Via S. Giuseppe Lavoratore 24, Loc. La Macia Z.A.I. - 37040 Arcole - Verona - Italy Tel. (+39).045.76.36.585 r.a. - Fax (+39).045.76.36.551 r.a. E-mail: info@advantixspa.it Export Department Tel. (+39).045.47.50.441 www.maxa.it...

This manual is also suitable for:

Mi35a1Mi42a1

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