Mitsubishi Electric VL-80U5-E Handbook
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Mitsubishi Electric VL-80U5-E Handbook

Mitsubishi Electric VL-80U5-E Handbook

Mitsubishi lossnay ventilator
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MITSUBISHI LOSSNAY VENTILATOR
HANDBOOK
MODELS
VL-80U
5
VL-80EU
Warning:
Repair work must be performed by the manufacturer, its service
agent or a similarly qualified person in order to avoid hazards.
-E
-E
5
August 2024
Nameplate
No. U327

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Summary of Contents for Mitsubishi Electric VL-80U5-E

  • Page 1 August 2024 No. U327 MITSUBISHI LOSSNAY VENTILATOR HANDBOOK MODELS VL-80U VL-80EU Nameplate Warning: Repair work must be performed by the manufacturer, its service agent or a similarly qualified person in order to avoid hazards.

  • Page 2: Table Of Contents

    Contents Contents 1. Safety precautions ................3 2. Names and functions of components ..........4 3. Specifications .................. 5 4. Outside dimensions ................ 6 5. Electrical wiring diagrams ............... 7 6. Troubleshooting ................8 7. Before receiving repair requests ........... 10 8.

  • Page 3: Safety Precautions

    1. Safety precautions Read the following precautions thoroughly before the maintenance, and then inspect and repair the product in a safe manner. The types and levels of danger that may arise if the product is handled improperly are described with the warning symbols shown below.

  • Page 4: Names And Functions Of Components

    2. Names and functions of components Panel Louver Core handle B Core handle A Exhaust air filter Lossnay Core (Heat exchanger) Filter frame Outside air filter * Power plug (VL-80U -E only) Air flow cover (RA) Pull cord (VL-80U -E only) Air flow cover (SA) Outside air filter Small particles and bugs may penetrate the filter.

  • Page 5: Specifications

    3. The noise level at 1.5 m is spherical. 4. Temperature exchange efficiency (%) is based on winter condition. 5. Mitsubishi Electric measures figures in the chart according to EN13141-8:2022. 6. The noise level (A-weighted sound pressure level) is calculated using the sound power level.

  • Page 6: Outside Dimensions

    4. Outside dimensions VL-80U Unit (mm) VL-80EU Unit (mm) ─ 6 ─...

  • Page 7: Electrical Wiring Diagrams

    5. Electrical wiring diagrams VL-80U VL-80EU ─ 7 ─...

  • Page 8: Troubleshooting

    6. Troubleshooting Work precautions • When servicing, recreate the malfunction two or three times before starting repairs. • When servicing, always keep proper footing. • When servicing, be sure to unplug the power cord from the outlet, or turn off the circuit breaker. Pay suffi- cient attention to avoid electric shock or injury.
  • Page 9 Troubleshooting 2 Lossnay operates irregularly. [2] Lossnay checklist (Table 2) Error Cause Action The fan does Do the fan blades touch other parts? Check for any abnormal area. not rotate. Replace any abnormal or defective parts. Is there any foreign matter around the Remove it.

  • Page 10: Before Receiving Repair Requests

    7. Before receiving repair requests Frequently asked question Response The incoming air feels cold. [1] Stop the operation, and install the air flow covers. [2] Adjust the louver in a horizontal position. [3] Change the fan speed to Low. Unusual noise occurs. [1] Clean the filters.
  • Page 11 (2) Power lead wires to the terminal block For VL-80EU [1] Open the front panel. Front panel [2] Unhook the claw of the cover, and remove the cover. Cover [3] Unscrew the terminal block (TB) case cover fixing screw (one PT screw 4 × 8, indicated by ), and remove the TB case cover.

  • Page 12: Main Unit

    (3) Main unit [1] Open the front panel. [2] Unscrew the main unit mounting screws (five silver PTT screws 4 × 45, indicated by Tightening torque : 1.5 to 1.9 N . m Mounting plate [Installation hole positions] Main unit *The illustration shows VL-80EU [3] Unhook the catch holes on the rear face of the main Catch...
  • Page 13 (5) Lossnay core [1] Hold the core handles with both of your hands, and push the upper hooks to remove them from the catch holes. [2] Pull out the core handles in the direction of the arrows to remove the Lossnay core. PUSH PUSH Catch hole...

  • Page 14: Front Casing

    (6) Front casing [1] Unscrew the screws (seven PTT screws 4 × 14, indicated by Front casing [2] Unscrew the lamp cover fixing screw (one PTT screw 4 × 14, indicated by ), and remove the lamp cover. Lamp cover [3] Remove the neon lamp from the front casing.
  • Page 15 (7) Air exhaust (EA) fan [1] Remove the special nut (8) and tab washer, and then remove Centrifugal fan the centrifugal fan. Tab washer Special nut (8) [2] Remove the special washer (8) (40 mm in outer diameter). Assembly precaution Be aware of the size difference between each washer for EA fan and SA fan.
  • Page 16 (8) Air supply (SA) fan [1] Unscrew the motor fix plate fixing screw (one PTT screw 4 × 14, Motor fix plate indicated by [2] Turn the motor fix plate upside down, and put it on the main unit. Centrifugal fan [3] Remove the special nut (8) and tab washer, and then remove the centrifugal fan.
  • Page 17 (10) Terminal block case (TB case) [1] Unscrew the TB case fixing screw (one PT screw 4 × 8, indi- cated by ), and remove the TB case. TB case [2] Unscrew the TB fix plate fixing screws (two PTT screws 4 × 8, indicated by ), and remove the TB fix plate.
  • Page 18 [3] Attach the replacement silicone tube. From the starting point (Figure 1) to the ending point (Figure 2), push the silicone tube into the groove of the back casing counterclockwise. Assembly precautions • Push the silicone tube into the entire groove of the back casing to the depth shown in Figure 3. •...
  • Page 19 [4] After attaching the silicone tube around the entire groove, check the amount of stretch in the silicone tube. Check that the end of the excess silicone tube is within the range shown in Figure 4. Assembly precaution If the end of the excess silicone tube is shorter (insufficient) or longer (overextended) than the range shown in Figure 4, reattach the silicone tube.
  • Page 20 [6] After assembling the product, check the gap between the front casing and the back casing. (Appropriate gap guideline: 1 mm) Front casing Back casing Assembly precaution If the gap between the front casing and the back casing is noticeably large (bulging), the silicone tube may be floating.

  • Page 21: Parts Catalog

    10. Parts catalog Please note the following when using the parts catalog. 1. When ordering parts, the part number, part name, and the number of parts are required. 2. It may take time for you to receive the parts. Make an inquiry about a rush order. 3.

  • Page 22: Vl-80U E

    VL-80U Structural parts 7 pcs. 5 pcs. 2 pcs. <Standard screws> Symbol Screw name PTT screw 4x8 PTT screw 4x14 PT screw 4x8 5 pcs. PPT screw 4x10 PPT screw 3x10 shows accessory parts. ─ 22 ─ VL-80U...
  • Page 23 Structural parts VL-80U5-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Front panel W36 001 719 Air flow cover (SA) W36 014 836 Air flow cover (RA) W36 014 835 Filter W36 001 717 Exhaust air  Lamp cover...

  • Page 24: Fan Parts

    Fan parts 17 pcs. Optional parts P-80F-E P-80HF-E 2 pcs. Air supply fan assembly 4 pcs. 17 pcs. 2 pcs. <Standard screws> Symbol Screw name Air exhaust fan assembly PTT screw 4x8 PTT screw 4x14 PTT screw 4x12 PTT screw 4x10 shows accessory parts.
  • Page 25 Fan parts VL-80U5-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Wall pipe W36 001 731 Pipe mounting plate W36 014 834 Mounting plate W36 014 837 Spl screw 3.5x32 W00 000 048 Weather cover W36 001 720...

  • Page 26: Vl-80Eue

    VL-80EU Structural parts 7 pcs. 5 pcs. 2 pcs. <Standard screws> Symbol Screw name PTT screw 4x8 PTT screw 4x14 PT screw 4x8 5 pcs. PPT screw 3x10 PPT screw 3x20 shows accessory parts. ─ 26 ─ VL-80EU...
  • Page 27 Structural parts VL-80EU5-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Front panel W36 001 719 Air flow cover (SA) W36 014 836 Air flow cover (RA) W36 014 835 Filter W36 001 717 Exhaust air  Lamp cover W36 001 708 Neon lamp W36 001 290...
  • Page 28 Fan parts 17 pcs. Optional parts P-80F-E P-80HF-E 2 pcs. Air supply fan assembly 4 pcs. 17 pcs. 2 pcs. <Standard screws> Symbol Screw name Air exhaust fan assembly PTT screw 4x8 PTT screw 4x14 PTT screw 4x12 PTT screw 4x10 shows accessory parts.
  • Page 29 Fan parts VL-80EU5-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Wall pipe W36 001 731 Pipe mounting plate W36 014 834 Mounting plate W36 014 837 Spl screw 3.5x32 W00 000 048 Weather cover W36 001 720 Flange W36 001 715 Flange nut...

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