Mitsubishi Electric Lossnay VL-250CZPVU-L-E Handbook
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Mitsubishi Electric Lossnay VL-250CZPVU-L-E Handbook

Mitsubishi Electric Lossnay VL-250CZPVU-L-E Handbook

Heat recovery ventilator
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LOSSNAY HEAT RECOVERY VENTILATOR
HANDBOOK
MODELS
VL-250CZPVU-L-E
VL-250CZPVU-R-E
VL-350CZPVU-L-E
VL-350CZPVU-R-E
RC cover
(Optional)
P-RCC-E
Filter
(Optional)
P-250F-E
P-250SF-E
P-250MF-E
P-250PF-E
P-250NF-E
Warning:
Repair work must be performed by the manufacturer, its service
agent or a similarly qualified person in order to avoid hazards.
P-350F-E
P-350SF-E
P-350MF-E
P-350PF-E
P-350NF-E
March 2021
Nameplate
* The figure shows VL-350CZPVU-R-E.
No. U295-A

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Summary of Contents for Mitsubishi Electric Lossnay VL-250CZPVU-L-E

  • Page 1 March 2021 No. U295-A LOSSNAY HEAT RECOVERY VENTILATOR HANDBOOK MODELS VL-250CZPVU-L-E VL-250CZPVU-R-E VL-350CZPVU-L-E VL-350CZPVU-R-E Nameplate * The figure shows VL-350CZPVU-R-E. RC cover (Optional) P-RCC-E Filter (Optional) P-250F-E P-350F-E P-250SF-E P-350SF-E P-250MF-E P-350MF-E P-250PF-E P-350PF-E P-250NF-E P-350NF-E 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 .................. 6 4. Outside dimensions ................ 8 8-12 5. Electrical wiring diagrams ............. 13 6. Circuit board diagrams ..............14 14-16 7. Principles of operation ..............17 17-22 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 * The figure shows VL-350CZPVU-R-E. - For L-type (For example, VL-350CZPVU-L-E), filters, controller and name plate are on the reflected positions. Name Function Exhaust air filter It prevents heat exchanger from clogging. Exhaust air filter case It holds the exhaust air filter Optional air filter case For optional filter (See the table below.) Filter cover Drain pipe attachment It is connected to drain pipe.
  • Page 5 Installation example Notes - Make sure that the exhaust air connection has two or more confluence points with the piping from the bathroom. - Pre-heaters and electric dampers may be required in your region. - Read the instructions carefully in advance when using optional components and commercially available components.

  • Page 6: Specifications

    3. The sound pressure level at 3 m is spherical. 4. Temperature exchange efficiency (%) is based on winter conditions. 5. Mitsubishi Electric measures figures in the chart according to EN13141-7:2010, and the characteristic curves are measured by chamber method.
  • Page 7 3. The sound pressure level at 3 m is spherical. 4. Temperature exchange efficiency (%) is based on winter conditions. 5. Mitsubishi Electric measures figures in the chart according to EN13141-7:2010, and the characteristic curves are measured by chamber method.

  • Page 8: Outside Dimensions

    4. Outside dimensions VL-250CZPVU-L-E Pipe guide (SA) RA: Return Air SA: Supply Air EA: Exhaust Air Pipe guide (OA) OA: Outdoor Air Pipe guide (EA) Pipe guide (RA) Wall mount hook top Wall bracket (accessory) φ122 Filter cover (RA) Filter cover (OA) Heat exchanger Controller Wall mount hook down...
  • Page 9 VL-250CZPVU-R-E Pipe guide (EA) RA: Return Air SA: Supply Air EA: Exhaust Air Pipe guide (RA) OA: Outdoor Air Pipe guide (SA) Pipe guide (OA) Wall bracket (accessory) Wall mount hook top φ122 Filter cover (OA) Filter cover (RA) Heat exchanger Filter cover (SA) Wall mount hook down Wall mount hook center...
  • Page 10 VL-350CZPVU-L-E Pipe guide (SA) RA: Return Air SA: Supply Air EA: Exhaust Air Pipe guide (OA) OA: Outdoor Air Pipe guide (EA) Pipe guide (RA) Wall bracket Wall mount hook top Filter cover (RA) (accessory) φ145 Filter cover (OA) Heat exchanger Controller Wall mount hook down Wall mount hook center...
  • Page 11 VL-350CZPVU-R-E Pipe guide (EA) RA: Return Air SA: Supply Air EA: Exhaust Air Pipe guide (RA) OA: Outdoor Air Pipe guide (SA) Pipe guide (OA) Wall bracket (accessory) Filter cover (OA) Wall mount hook top φ145 Filter cover (RA) Heat exchanger Filter cover (SA) Controller Wall mount hook center...
  • Page 12 P-RCC-E ■ ■ Unit (mm) P-250F-E, P-250SF-E, P-250MF-E, P-250PF-E, P-250NF-E, P-350F-E, P-350SF-E, P-350MF-E, P-350PF-E, P-350NF-E MODEL P-250F-E 302 178 P-250SF-E P-250MF-E 306 177 P-250PF-E P-250NF-E P-350F-E 377 178 P-350SF-E P-350MF-E 382 177 P-350PF-E P-350NF-E Unit (mm) ─ 12 ─...

  • Page 13: Electrical Wiring Diagrams

    5. Electrical wiring diagrams VL-250CZPVU-L-E, VL-250CZPVU-R-E, VL-350CZPVU-L-E, VL-350CZPVU-R-E 24 V DC By-pass Pre-heater VL-40S 15 V DC 0.1 A By-pass 12 V or 24 V DC POWER SUPPLY VL-40P 220-240 V 50 Hz 220 V 60 Hz (0-10 V DC) Can be removed from the main unit.

  • Page 14: Circuit Board Diagrams

    6. Circuit board diagrams Circuit board diagrams and check points (1) Control circuit board Malfunction monitor output By-pass monitor output Remote controller OA shutter output Pre-heater output power supply indicator (Between [8] and [10] ) (Between [7] and [10] ) (LED3 Green) During error status or During by-pass mode or...
  • Page 15 (2) Power circuit board Caution: The power circuit board is not insulated from the power line (high voltage part), except for the connection part (CN118 and CN119) with the control circuit board. Also, even when the power supply is cut off, the capacitor is charged.
  • Page 16 (3) Power interface circuit board Caution: The power interface circuit board is not insulated from the power line (high voltage part), except for the con- nection part (CN132) with the signal interface circuit board. Also, even when the power supply is cut off, the capacitor is charged.

  • Page 17: Principles Of Operation

    7. Principles of operation (1) Terminal connection specifications and functions Selection requirement Input/ Wiring Terminal Category Terminal rating Diameter and Sensor, switch, Output example length of wires etc. + Analog input Input (for sensor) Max.: 10 V DC TM200 0.5 mm –0.75mm 0-10 V DC Fig.
  • Page 18 Fig. 1 Fig. 2 + - + - Switch 1 2 3 4 Rating: 15 V DC, 0.1 A TM201 Minimum applicable load: 1 mA By-pass Sensor TM200 Volt-free control 0-10 V sensor The unit can be operated by the DC power supply input Volt-free contact from external devices.
  • Page 19 Fig. 4 <Examples of electric wiring for function setting No. 57 TM3 9–10> Function setting value [1]: Exhaust air fan Function setting value [3]: Supply air after-heater Function setting value [2]: Supply air fan Lossnay 2 m or more Operation indicator Relay Power Supply...
  • Page 20 (2) Function setting list Factory Function setting value Function Function name default Function description [8] [9] setting 1: Set the filter maintenance indica- tion to Show/Hide. 2: Set Use/No use of the function that increases the fan output 1: Filter maintenance 1: Yes 1: No 1: Yes...
  • Page 21 Factory Function setting value Function Function name default Function description [8] [9] setting When No. 36 Outdoor temperature Correction of outdoor Function setting value: 0 to 14 indication and No. 37 Indoor temper- temperature Correction of outdoor temperature: -7°C to 7°C (1°C intervals) ature indication are set to Show, set the correction value of the tempera- ture shown on the controller.
  • Page 22 Factory Function setting value Function Function name default Function description [8] [9] setting Conditions for pre- Set the ON/OFF conditions of the heater ON function setting No. 58 [2] Supply air Function setting value: 0 to 15 (Supplemental setting pre-heater. Threshold of outdoor temperature: 0°C to -15°C (1°C intervals) for the function setting No.

  • Page 23: Troubleshooting

    8. 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 turn off the circuit breaker. Pay sufficient attention to avoid electric shock or injury. •...
  • Page 24 The product does not start properly. Failure mode 1 Lossnay does not work. Lossnay does not work in trial operation or Lossnay stops working during use. The controller does not work. Failure mode 2 The controller does not work. Operations such as ON/OFF, fan speed or Operations on the controller are not Failure mode 3 ventilation mode switching are not possible...
  • Page 25 [2] Transmission cables (remote controller cable (when the controller is installed externally), external input sig- nal cable) Check item Corrective action Are the designated cables used for the remote controller Use the designated cable. cable? (Table [2]-1) Are the designated parts used for the external input signal Use the designated parts.
  • Page 26 [3] Monitor output signal cable Check item Corrective action 1 Is the signal cable wired by multicore cable? Wire the cable using a 2-core cable. Are the signal cables and transmission cables wired in the Wire the signal cables away from the trans- same piping duct? mission cables.
  • Page 27 Individual function check items If Lossnay does not work in the trial operation or Lossnay stops working during use, check the following items. Symptom Cause Corrective action 1 The fan does not The connectors between the Check the connector (CN9) for the exhaust fan motor operate even fan motor and power circuit and the connector (CN10) for the supply fan motor.
  • Page 28 Symptom Cause Corrective action 4 Even though the The outdoor air temperature When the outdoor air temperature is 8°C or lower, the controller is oper- is 8 °C or lower. ventilation mode is fixed to the Heat exchange ventila- ated to change the tion mode.
  • Page 29 Failure mode 2 The controller does not work. If the controller does not work, check the following items. Symptom Cause Corrective action 1 Nothing is displayed The power of the Lossnay unit is not ON. Refer to section [1] of “Failure mode 1”. on the screen.
  • Page 30 Failure mode 3 Operations on the controller are not possible. Initial check items If Lossnay cannot be operated with the controller, check the following items. Check item Note 1 Are the function selection switch on the cir- Depending on the setting, it may automatically cuit board set correctly to suit the required operate or stop, or specific operation may become application?
  • Page 31 Symptom Cause Corrective action 5 CO concentration is With the function setting No. Set the function setting No. 84 to “1: Show”. not displayed on the 84, CO concentration indica- (Refer to the function No. 84 in “7. (2) Function controller tion setting is set to “0: Hide”.
  • Page 32 Failure mode 4 Lossnay does not work properly. Initial check items If Lossnay does not work properly, check the following items. Check item Note 1 Are the function settings set correctly Depending on the setting, it may automatically operate or stop, or for the required application? specific operation may become unusable.
  • Page 33 Failure mode 5 Error code and LED error display An error code displayed on the controller and the number of blinks of LED1 (green) on the control circuit board show the type of an error. The LED blink interval is 0.25 seconds for both ON and OFF. The display duration is approximately 7 seconds.
  • Page 34 Error code LED1 (Controller Error Cause Corrective action (green) display) 5101 Outdoor air Faulty connection of the thermistor Check connection of the relay con- blinks (OA) thermistor (OA) connector nector and the connector (CN22) related error on the control circuit board. Thermistor (OA) failure Disconnect the connector (CN22) on the control circuit board,...
  • Page 35 Error code LED1 (Controller Error Cause Corrective action (green) display) 6833 Controller com- Faulty connection of the controller Refer to section [2] of “Failure blinks munication error cable mode 1”. (hardware error) If the error code does not disap- pear, investigate noise on the con- troller cable.
  • Page 36 Failure mode 6 The product has an error. [1] When condensation occurs in or on the product Symptom Cause Corrective action 1 Condensation When the surrounding temperature and • Stop the product temporarily. occurs on the exte- return air temperature is outside the fol- •...
  • Page 37 Symptom Cause Corrective action 6 The product gener- The filter cases are not inserted to the Insert the filter cases to the deepest posi- ates vibration. deepest position correctly. tion correctly. The product gener- Clogged filter Clean or replace the filters. ates vibration noise.
  • Page 38 [3] Abnormal air volume Symptom Cause Corrective action 1 Air volume changed. Check if the fan rotation has increased, Fan rotation speed may change or the The product stopped. decreased or stopped due to Automatic fan may stop due to Automatic supply air supply stop/Automatic air supply air stop/Automatic supply air intermittent intermittent operation because of the...
  • Page 39 Symptom Cause Corrective action 2 Water leaks from the The pipe guide and duct is not caulked If there is a gap, caulk it using silicone. duct pipe. with silicone with no gap. (Refer to the Installation Manual for the procedure.) Condensation occurs around the pipe Use commercial heat insulation materials...
  • Page 40 [2] Diagnosis of an externally connected device Symptom Diagnosis method Corrective action 1 Lossnay operation is Check if connection with the external Connect the external device correctly. not correct for the ana- device is disconnected or loose. log signal sent from the Check that terminal block connection is Connect terminals correctly.
  • Page 41 Symptom Diagnosis method Corrective action 6 Lossnay operation is Check if connection with the Wi-Fi Connect the Wi-Fi interface correctly. not correct for commu- interface is disconnected or loose. nication with the Wi-Fi Check that connector connection is Connect the connector correctly. interface connected to correct.
  • Page 42 Components Checklist DC motor 1. Remove the motor cover, and measure resistance at the following points to check for coil breakage: (Measure the resistance with the motor connectors (CN9, CN10) disconnected from the power circuit board.) <VL-250 type> • Between V and U...102.8 Ω •...
  • Page 43 (3) Setting status record Record of the Lossnay setting Date: a. Basic information Installed location Model name of the product : VL- ( 250 • 350 ) CZPVU- ( L • R ) -E Address setting Manufacturing lot number of the circuit board (Number on the circuit board) Microcomputer software number on circuit board...

  • Page 44: Service Inspection List

    9. Service inspection list Inspection item Check result Is the power cable connected correctly? Are the cables to the external devices connected correctly? Is the product installed correctly? Is the product grounded correctly? Are the drain pipes connected correctly? Does controller display work correctly? After replacing the control circuit board or controller, setting the operation mode and func- tions is necessary.

  • Page 45: Overhauling Procedures

    10. Overhauling procedures Work precautions • When touching the electric components such as circuit boards and fan motors, do not touch the components for more than 5 minutes after power-off, and then start working. If LED4 on the circuit board is lit, do not touch the electric components.

  • Page 46: Vl-250Czpvu-L Type, Vl-250Czpvu-R Type

    10-1 VL-250CZPVU-L type, VL-250CZPVU-R type Note: The following procedure applies to the VL-250CZPVU-L type. For VL-250CZPVU-R type, the compo- nents are placed in the right-left opposite positions. (1) Turn off the power supply [1] Stop the operation. [2] Turn off the circuit breaker on the distribution board. (2) Remove the heat exchanger [1] Remove the filter cover (A) (1 pc.) and filter covers (B) (2 pcs.).
  • Page 47 [3] Remove the front casing (OUT). a. Remove the screws from the bottom side. Front casing (OUT) ( 2 screws: Special (spl) PT screw 4x10 (painted), indi- cated by Tightening torque : 1.5 ± 0.2 N . m Front casing (OUT) b.
  • Page 48 [4] Remove the front casing (IN) and filter case (SA). Front casing (IN) Filter case (SA) [5] Hold the band of the heat exchanger and pull it out. Label Precaution The heat exchanger is heavy. Be careful not to remove the band.
  • Page 49 (3) Remove the PCB cover [1] Remove the heat exchanger..Refer to (2). [2] Remove the bypass plate. a. Remove the fixing screw. (1 screw: Spl PTT screw 4x14, indicated by Tightening torque : 1.2 ± 0.2 N . m b.
  • Page 50 [4] Remove the lead wires. a. Remove the lead wires from the styrene grooves (indicated by Precaution Be careful not to damage the styrene. b. Pull out the lead wires stored in the outer side of the PCB cover (UP). PCB cover (UP) [5] Remove the PCB cover (UP).
  • Page 51 [6] Remove the PCB cover (LOW). PCB cover (LOW) PCB cover (LOW) Reference: Circuit board locations within the control box < VL-250CZPVU-L type > < VL-250CZPVU-R type > Control circuit Power circuit board board (X07DC-E2-C) (X07DC-E2-P) Signal interface Power interface circuit board circuit board (VL-40S)
  • Page 52 (4) Remove the thermistor [1] Remove the heat exchanger..Refer to (2). [2] Remove the PCB cover..Refer to (3). [3] Unhook the thermistor lead from the hooks on the orifice (indicated by [4] Remove the fixing screws. (3 screws: Spl PTT screw 4x14, indicated by Tightening torque : 1.1 ±...
  • Page 53 [9] Disconnect the thermistor relay connector. Metal clip Thermistor (RA) relay connector [10] Remove the thermistor lead from the lead clamper. [11] Remove the metal clip fixing screw. (1 screw: indicated by Thermistor (OA) Lead clamper relay connector Assembly precaution When attaching the thermistor, align the insulok tie with the protrusion in the groove as shown in the picture.
  • Page 54 [5] Remove the damper lead from the metal plate hook of the control box (indicated by Damper lead [6] Disconnect the damper lead connector from the power Damper connector: CN7 circuit board. Power circuit board [7] Remove the damper assembly fixing screws. Damper assembly (2 screws: Spl PTT screw 4x14, indicated by Tightening torque...
  • Page 55 (6) Remove the fan assembly [1] Remove the heat exchanger..Refer to (2). [2] Remove the PCB cover..Refer to (3). [3] Remove the orifice and thermistor..Refer to (4). [4] Lower the circuit board (control circuit board) to provide a work space for disconnecting and connecting the connectors.
  • Page 56 [9] Remove the special nut (M8) and spring washer. Tightening torque: 2.3 ± 0.2 N . m [10] Remove the tab washer and centrifugal fan. Centrifugal fan Tab washer Spring washer (8) Special nut (M8) [11] Remove the special washer (8). Special washer (8) [12] Remove the DC motor (EA).
  • Page 57 (7) Remove the circuit board and power supply cord [1] Remove the heat exchanger..Refer to (2). [2] Remove the PCB cover..Refer to (3). [3] Disconnect the relay connectors (indicated by [4] Remove the circuit board (control circuit board). a.
  • Page 58 [5] Remove the control box (power circuit board). a. Disconnect the motor lead connectors from the power circuit board..Refer to (6) [6] and [7]. b. Disconnect the damper lead connector from the power circuit board..Refer to (5) [5] and [6]. c.
  • Page 59 <When not using the ratchet> a. Remove the screw and remove the lead fixing metal plate. (1 screw: PTT screw 4x12, indicated by Tightening torque : 1.1 ± 0.2 N . m b. Remove the screw. (1 screw: PT screw 4x10, indicated by Tightening torque : 1.5 ±...
  • Page 60 (8) Remove the controller * The pictures show VL-250CZPVU-R-E. [1] Open the tabs in the slits at the bottom of the controller Front cover using a flat-head screwdriver (at 2 locations indicated by ) and open the front cover. [2] Open the front cover and disconnect the bottom case Top case Bottom case connector.
  • Page 61 (9) Restoring wire connection Wiring order inside the control box Assembly precaution If the lead wires are ordered in a wrong way, they cross each other and may affect the electrical characteristics. [1] Thermistor connectors a. Connect the thermistor relay connectors. b.
  • Page 62 [3] Motor connectors a. Connect the SA fan motor connector (white) to CN10 on the power circuit board. b. Connect the EA fan motor connector (red) to CN9 on the power circuit board. c. Fix the motor lead to the metal plate hook of the control box (indicated by d.
  • Page 63 How to arrange the lead wires after attaching the PCB covers (LOW and UP) Assembly precaution Be careful not to damage the styrene when fitting the lead wires into the styrene grooves. [1] Put the controller cable in the corner (indicated by Controller cable Controller cable <...
  • Page 64 [4] Fit the part of the damper lead with packing into the styrene groove (indicated by Damper lead Damper lead < VL-250CZPVU-L type > < VL-250CZPVU-R type > [5] Fit the part of the SA fan motor lead with packing into the styrene groove (indicated by SA fan motor lead SA fan motor lead <...

  • Page 65: Vl-350Czpvu-L Type, Vl-350Czpvu-R Type

    10-2 VL-350CZPVU-L type, VL-350CZPVU-R type Note: The following procedure applies to the VL-350CZPVU-L type. For VL-350CZPVU-R type, the compo- nents are placed in the right-left opposite positions. (1) Turn off the power supply [1] Stop the operation. [2] Turn off the circuit breaker on the distribution board. (2) Remove the heat exchanger [1] Remove the filter cover (A) (1 pc.) and filter covers (B) (2 pcs.).
  • Page 66 [3] Remove the front casing (OUT). Front casing (OUT) a. Remove the screws from the bottom side. ( 2 screws: Spl PT screw 4x10 (painted), indicated by Tightening torque : 1.5 ± 0.2 N . m b. Remove the screws and washers from the front side. ( 2 screws: Spl PT screw 4x10 (painted), indicated by (2 washers: Special washer (3)) Tightening torque...
  • Page 67 [4] Remove the reinforcement. a. Remove the reinforcement fixing screw. (1 screw: Spl PT screw 5x10 (painted), indicated by Tightening torque : 2.7 ± 0.5 N . m Reinforcement b. Remove the reinforcement by sliding it upward. Precaution Be careful not to drop the reinforcement due to reaction from the plate.
  • Page 68 [6] Hold the band of the heat exchanger and pull it out. Label Precaution The heat exchanger is heavy. Be careful not to remove the band. (The heat exchanger may drop and cause an injury) Assembly precaution When installing the heat exchanger, its label should come to this end and face up as shown in the picture.
  • Page 69 (3) Remove the PCB cover [1] Remove the heat exchanger..Refer to (2). [2] Remove the PCB plate. For VL-350CZPVU-L type Raise this side of the PCB plate a little bit and pull it until the hook at the deepest location (indicated by is unhooked, and then remove the PCB plate by rotating it.
  • Page 70 [3] Remove the lead wires. a. Remove the lead wires from the styrene grooves (indicated by Precaution Be careful not to damage the styrene. b. Pull out the lead wires stored in the outer side of the PCB cover (UP). c.
  • Page 71 [5] Remove the PCB cover (LOW). PCB cover (LOW) PCB cover (LOW) Reference: Circuit board locations within the control box ... Refer to 10-1 (page 51). (4) Remove the fan assembly [1] Remove the heat exchanger..Refer to (2). [2] Remove the PCB cover.
  • Page 72 [4] Remove the lead clip fixing screw to disconnect the con- nector. (1 screw: PTT screw 4x12, indicated by * VL-350CZPVU-L type only Lead clip [5] Disconnect the motor lead connector from the power SA fan motor connector: CN10 Motor lead circuit board.
  • Page 73 For the SA fan assembly [7] Remove the DC motor assembly (SA). a. Remove the earth lead (green) fixing screw. Earth lead (green) Earth lead (black) (1 screw: PT screw 4x10, indicated by Tightening torque : 1.5 ± 0.2 N . m b.
  • Page 74 *Steps [8] through [12] refers to the DC motor assembly (EA). Remove the DC motor assembly (SA) in the similar manner. [8] Remove the special nut (M8). Spring washer (8) Tab washer Tightening torque: 2.3 ± 0.2 N . m [9] Remove the spring washer (8).
  • Page 75 (5) Remove the thermistor [1] Remove the heat exchanger..Refer to (2). [2] Remove the PCB cover..Refer to (3). For the thermistor (OA) [3] Remove the DC motor assembly (EA)..Refer to (4). [4] Remove the element guide (OA) by sliding it as shown in the pictures. Element guide (OA) Element guide (OA) Element guide (OA)
  • Page 76 For the thermistor (RA) [3] Remove the DC motor assembly (SA)..Refer to (4). [4] Remove the element guide (RA) by sliding it as shown in the pictures. Element guide (RA) Element guide (RA) Element guide (RA) [5] Remove the thermistor (RA). Insulok tie Thermistor (RA) Assembly precaution...
  • Page 77 (6) Remove the damper assembly [1] Remove the heat exchanger..Refer to (2). [2] Remove the PCB cover..Refer to (3). [3] Remove the DC motor assembly (SA)..Refer to (4). [4] Remove the thermistor (RA)..Refer to (5). [5] Remove the damper lead from the metal plate hook of the control box (indicated by Damper lead...
  • Page 78 (7) Remove the circuit board and power supply cord ... Refer to 10-1 (7). Note: When removing the control box (power circuit board), be sure to remove the fixing screws of the earth lead (green), (black)..Refer to 10-2 (4) [7] (For the SA fan assembly). (8) Remove the controller ...
  • Page 79 How to arrange the lead wires after attaching the PCB covers (LOW and UP) Assembly precaution Be careful not to damage the styrene when fitting the lead wires into the styrene grooves. [1] Put the controller cable in the corner (indicated by Controller cable Controller cable <...
  • Page 80 [4] Fit the part of the damper lead with packing into the styrene groove (indicated by [5] Fix the extra damper lead together with the earth lead (green) and thermistor (RA) lead using the cord clip. Cord clip Damper lead Damper lead Cord clip <...

  • Page 81: Parts Catalog

    11. 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 82: Vl-250Czpvu-L-E

    VL-250CZPVU-L-E 6 pcs. (Commercially available screw) 4 pcs. 2 pcs. Drain hose fixture Washer 8 pcs. 2 pcs. Cable strap 1 pc. Drain hose (250 mm) 1 pc. Slim-Lossnay connection cable (100 mm) 1 pc. shows accessory parts. ─ 82 ─ VL-250CZPVU-L-E...
  • Page 83 VL-250CZPVU-L-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Filter cover (B) W36 008 717 Filter cover (A) W36 008 718 Filter case (OA) W36 008 719 Filter case (RA) W36 008 720 Filter case (SA) W36 008 721 Front casing (OUT) W36 008 830 Bush...
  • Page 84 4 pcs. 3 pcs. Air exhaust fan assembly (EA) 2 pcs. 3 pcs. 4 pcs. Air supply fan assembly (SA) ─ 84 ─ VL-250CZPVU-L-E...
  • Page 85 VL-250CZPVU-L-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety DC motor (EA) W36 008 453  Spl PTT screw 4x14 W36 008 046 Cover W36 008 832 Special washer (8) W50 003 477 Dia. 40mm Centrifugal fan W36 008 480 Dia.
  • Page 86 2 pcs. 2 pcs. 3 pcs. 2 pcs. 2 pcs. <Standard screws> Symbol Screw name PT screw 4x10 ─ 86 ─ VL-250CZPVU-L-E...
  • Page 87 VL-250CZPVU-L-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety PCB plate W36 008 836 PCB cover (UP) W36 008 704 PCB cover (LOW) W36 008 705 Control box W36 008 235 X07DC-E2-P,VL-40P  Circuit board W36 008 236 VL-40P ...

  • Page 88: Vl-250Czpvu-R-E

    VL-250CZPVU-R-E (Commercially available screw) 4 pcs. 6 pcs. 2 pcs. Drain hose fixture Washer 8 pcs. 2 pcs. Cable strap 1 pc. Drain hose (250 mm) 1 pc. Slim-Lossnay connection cable (100 mm) 1 pc. shows accessory parts. ─ 88 ─ VL-250CZPVU-R-E...
  • Page 89 VL-250CZPVU-R-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Filter cover (A) W36 008 718 Filter cover (B) W36 008 717 Filter case (RA) W36 008 723 Filter case (SA) W36 008 724 Filter case (OA) W36 008 725 Front casing (OUT) W36 008 837 Bush...
  • Page 90 2 pcs. 4 pcs. 3 pcs. Air supply fan assembly (SA) 3 pcs. 4 pcs. Air exhaust fan assembly (EA) ─ 90 ─ VL-250CZPVU-R-E...
  • Page 91 VL-250CZPVU-R-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety DC motor (SA) W36 008 454  Spl PTT screw 4x14 W36 008 046 Cover W36 008 832 Special washer (8) W50 003 477 Dia. 40mm Centrifugal fan W36 008 480 Dia.
  • Page 92 2 pcs. 2 pcs. 3 pcs. 2 pcs. 2 pcs. <Standard screws> Symbol Screw name PT screw 4x10 ─ 92 ─ VL-250CZPVU-R-E...
  • Page 93 VL-250CZPVU-R-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety PCB plate W36 008 836 PCB cover (UP) W36 008 704 PCB cover (LOW) W36 008 705 Control box W36 008 238 X07DC-E2-P,VL-40P  Circuit board W36 008 236 VL-40P ...

  • Page 94: Vl-350Czpvu-L-E

    VL-350CZPVU-L-E 6 pcs. (Commercially available screw) 4 pcs. 2 pcs. 2 pcs. 2 pcs. Drain hose fixture Washer 8 pcs. 2 pcs. Cable strap 1 pc. Drain hose (250 mm) 1 pc. Slim-Lossnay connection cable (100 mm) 1 pc. shows accessory parts. ─...
  • Page 95 VL-350CZPVU-L-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Filter cover (B) W36 008 717 Filter cover (A) W36 008 718 Filter case (OA) W36 008 726 Filter case (RA) W36 008 727 Filter case (SA) W36 008 728 Spl PT screw 4x10 W36 008 045 Special washer (3)
  • Page 96 4 pcs. 4 pcs. 4 pcs. 4 pcs. Air exhaust fan assembly (EA) Air supply fan assembly (SA) ─ 96 ─ VL-350CZPVU-L-E...
  • Page 97 VL-350CZPVU-L-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Special nut (M8) W36 008 067 Spring washer (8) W00 000 126 Tab washer W00 000 134 Centrifugal fan W36 008 481 Dia. 210mm  Washer (10) W36 008 071 DC motor assy (EA) W36 008 729 With fan casing...
  • Page 98 2 pcs. 3 pcs. 2 pcs. 2 pcs. <Standard screws> Symbol Screw name PT screw 4x10 ─ 98 ─ VL-350CZPVU-L-E...
  • Page 99 VL-350CZPVU-L-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety PCB plate W36 008 843 PCB cover (UP) W36 008 704 Spl screw PTT 4x12 W00 000 046 PCB cover (LOW) W36 008 705 Control box W36 008 235 X07DC-E2-P,VL-40P ...

  • Page 100: Vl-350Czpvu-R-E

    VL-350CZPVU-R-E 6 pcs. (Commercially available screw) 4 pcs. 2 pcs. 2 pcs. 2 pcs. Drain hose fixture Washer 8 pcs. 2 pcs. Cable strap 1 pc. Drain hose (250 mm) 1 pc. Slim-Lossnay connection cable (100 mm) 1 pc. shows accessory parts. ─...
  • Page 101 VL-350CZPVU-R-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Filter cover (A) W36 008 718 Filter cover (B) W36 008 717 Filter case (RA) W36 008 732 Filter case (SA) W36 008 733 Filter case (OA) W36 008 734 Spl PT screw 4x10 W36 008 045 Special washer (3)
  • Page 102 4 pcs. Air supply fan assembly (SA) 4 pcs. 4 pcs. 4 pcs. Air exhaust fan assembly (EA) ─ 102 ─ VL-350CZPVU-R-E...
  • Page 103 VL-350CZPVU-R-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Special nut (M8) W36 008 067 Spring washer (8) W00 000 126 Tab washer W00 000 134 Centrifugal fan W36 008 481 Dia. 210mm  Washer (10) W36 008 071 DC motor assy (SA) W36 008 730 With fan casing...
  • Page 104 2 pcs. 3 pcs. 2 pcs. 2 pcs. <Standard screws> Symbol Screw name PT screw 4x10 ─ 104 ─ VL-350CZPVU-R-E...
  • Page 105 VL-350CZPVU-R-E Critical Q'ty Name of part Parts No. Remarks pcs/unit safety PCB plate W36 008 843 PCB cover (UP) W36 008 704 Spl screw PTT 4x12 W00 000 046 PCB cover (LOW) W36 008 705 Control box W36 008 238 X07DC-E2-P,VL-40P ...

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