6.1. Main Components 6.2. Description of Main Components and Features 6.2.1. Exhaust and Supply Fans 6.2.2. Heat/Energy Recovery 6.2.3. Freecooling. Bypass Damper 6.2.4. Supply and Extract Air Filters 6.2.5. Air Filter Pressure Switches 6.2.6. Temperature Sensors 6.2.7. Pressure Transducer systemair...
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6.2.11. Hot Water Coil 6.2.12. Combined Water Coil (2P) 6.2.13. Direct Expansion (DX) Coil 6.2.14. Electrical Heater 7. MAITENANCE 7.1. Important Information 7.2. Maintenance Frequencies 7.3. Maintenance Instructions 7.3.1. Access to the Unit’s Internal Components 7.4. Troubleshooting 7.5. After-Sales Service systemair...
3. Product Information 3.1. Overview This manual is applicable to the range of CLEVA heat recovery units manufactured by Systemair Spain. This manual contains basic information and recommendations regarding design, installation, commissioning, operation and maintenance, to ensure proper, failure-free unit operation.
• Top view • • Front view Side view • Sizes 500 / 1000 / 1500 / 2000. Registros a derechas. Bottom view Figure 1. Table 1. Key. Position Symbol Description Supplay air Exhaust air Outside air Extract air systemair...
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• Sizes 500 / 1000 / 1500 / 2000. Left register. Top view Front view Side view Bottom view Figura 2. Position Symbol Description Supplay air Exhaust air Outside air Extract air systemair...
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• Sizes 3000 / 4000. Right register. Top view Side view Front view Bottom view Figure 3. Position Symbol Description Supplay air Exhaust air Outside air Extract air systemair...
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• Sizes 3000 / 4000. Left register Top view Side view Front view Bottom view Figure 4. Position Symbol Description Supplay air Exhaust air Outside air Extract air systemair...
3.2.3. Weights The following table reflects the weights of the different models without considering the optional ones: Model Weights [kg] Cleva 500 Cleva 1000 Cleva 1500 Cleva 2000 Cleva 3000 Cleva 4000 Table 3. Weights 3.2.4. Maintenance Spaces Figure 7.
Check that the equipment delivered is consistent with the order placed. In the event of discrepancies, contact your Systemair products supplier. Unit components can be accessed by means of access panels through pressure closures with Ø6mm Allen head screws.
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Perform installation according to local rules and regulations. 2. Connect the unit electrically to the electrical network using a circuit breaker with differential protection. Wiring to the unit will be performed through the electrical panel. See the electrical diagram supplied with the unit and Section 5. systemair...
Supply air filter Extract air filter Recovery unit Bypass damper (actuator) Electrical panel Table 6. Components. Model Machine opening diameter [mm] Cleva 500 Cleva 1000 Cleva 1500 Cleva 2000 Cleva 3000 Cleva 4000 Table 7. Duct connection diameter. Caution Air ducts must be insulated to avoid potential condensation or loss of performance risks.
Operating mode signals (Unoccupied/ECO/Comfort) • Display (optional) Terminal block for component connection and external signals (to be made by the installer) USB connection for connecting the WLAN Stick (optional) IP port for BACnet IP communication Table 8. Electrical panel components. systemair...
Cold water valve actuator (+). 24Vdc. Electrical power supply. Cold water or combined valve (2P). Cold water valve actuator (-). Reference. GND-0Vdc. Electrical power supply. Cold water or combined valve (2P). 0-10Vdc. Cold water/DX valve actuator. Cold water/combined (2P)/DX Control signal. valve. systemair...
The unit has two condensate trays installed under the plate exchanger for any condensation on its fins, due to extract and supply air conditions. Any water condensation will occur on the side of the air expelled from the plate exchanger, originating in the room. systemair...
Electrical panel electrical connection: Terminals 1 and 2 of terminal block X7. See electrical diagram supplied with the unit. Type of cable to use: 2-wire twisted pair: Section 0.5 - 1.5 mm . Maximum length < 1000 m.5.8.1. 5.8.1. Dimensions Figure 18. Housing dimensions. Figure 19. Dimensions for assembly. systemair...
Only one control mode can be active and the operating mode must be the same for both the supply and exhaust fan. The unit control mode is established in the unit settings. To change the control mode, contact Systemair’s Technical Service.
2. Constant air flow control in duct (CAV) For this type of regulation, it is necessary to install the optional pressure transducer supplied by Systemair. It must be assembled according to the manual supplied with the component and the unit’s electrical diagram.
The following figure shows the sequence of the different cold and heat stages available in CLEVA units. If the selected unit does not have a cold or heat stage, the unit control will not be set to manage it. The switch between the different stages is carried out through an inner PI control loop. systemair...
Regulation is carried out through a PI control loop, and the maximum speed of the fans is the value defined in the COMFORT mode and the minimum speed is the value defined by the active operating mode. systemair...
To avoid freezing of the water coil, a temperature sensor is supplied with the coil to measure the temperature of the inlet water and must be electrically connected to the unit according to its electrical diagram. systemair...
The cold signal is activated when the flow temperature is higher than the set point. Regulation is carried out through a PI control loop. The control signal for the direct expansion system is 0-10Vdc. systemair...
The following table shows the recommended preventive maintenance periods for the unit and installation. To ensure a long unit life, it is important to perform maintenance tasks according to the recommendations provided below. Full and continuous preventive maintenance is essential for the validity of the warranty. systemair...
7 or 8 Dirty supply air filter pressure switch. 7 or 8 Extract air temperature probe. 5 or 6 Dirty extract air filter pressure switch. 5 or 6 Bypass damper Actuator. Electrical connections. Electrical panel Table 13. Maintenance accesses. systemair...
Figure 23. 7.4. Troubleshooting Before contacting the Systemair after-sales department, review the following points and check for any active alarms on the unit. To determine the type of alarm that is active, check the display or the WLAN Stick accessory and the ABT-Go app.
3. Check that the unit is mounted 3. Unit not installed level. level. Table 14. Troubleshooting. 7.5. After-Sales Service Before contacting Systemair after-sales service, please take note of the model and serial number of the unit, as indicated on the nameplate on the unit. systemair...
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Systemair España Calle Montecarlo 14 Fuenlabrada, Madrid 28942 Tel. +34 916 00 29 00 info@systemair.es www.systemair.com...
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