Evco EV3 HRV Applications Manual
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Evco EV3 HRV Applications Manual

Controllers for mechanical ventilation units for air renewal and heat recovery
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EVCO S.p.A.
EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104
EV3 HRV & EVD HRV
Controllers for mechanical ventilation
units for air renewal and
heat recovery
Application manual ver. 1.0a February 2020 | ENGLISH
Code 1443DHRVE104
page 1 of 74

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  • Page 1 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 EV3 HRV & EVD HRV Controllers for mechanical ventilation units for air renewal and heat recovery Application manual ver. 1.0a February 2020 | ENGLISH Code 1443DHRVE104...
  • Page 2 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Important Read this manual carefully before installation and before using the devices and take all the prescribed precautions. Keep this manual with the devices for future consultation.

  • Page 3: Table Of Contents

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 SUMMARY INTRODUCTION ............................5 Models available, purchasing codes and technical features ..............5 DESCRIPTION ............................7 Description of EV3 HRV ........................7 Description of EVD HRV ........................8 Description of EV3K11 ........................
  • Page 4 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Parameters ............................ 38 Configuring inputs .......................... 43 8.2.1 Configuring input functions ....................44 8.2.2 Universal input type configuration................... 45 Analogue Output Configuration ......................45 8.3.1 Configuring type AO ......................

  • Page 5: Introduction

    EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 INTRODUCTION EV3 HRV and EVD HRV are controllers for mechanical ventilation units for air renewal and handling, capable of complying with the most rigorous standards for air-quality and building energy certification.
  • Page 6 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Models available EV3 HRV EVD HRV EV3K11 EVJ LCD Digital outputs (triac; A res. @ 250 VAC) triac Digital outputs (open collector) open collector Communications ports INTRABUS •...

  • Page 7: Description

    The following paragraphs contain a description of the various devices that can used for the management of HRV units. Description of EV3 HRV The diagram below shows the layout of the EV3 HRV controller for panel installation in standard 74x32 mm format. The table below describes each part of the EV3 HRV.

  • Page 8: Description Of Evd Hrv

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Description of EVD HRV The diagram below shows the layout of the EVD HRV for installation in an electrical panel on a DIN rail in standard 4 DIN-module format.

  • Page 9: Description Of Ev3K11

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Description of EV3K11 The diagram below shows the layout of the EV3K11 remote keypad for panel installation in standard 74x32 mm format. The table below describes each part of the EV3K11.

  • Page 10: Description Of Evj Lcd

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Description of EVJ LCD The diagram below shows the layout of the EVJ LCD remote keypad for wall installation in 111.4x76.4 mm format. The table below describes each part of the EVJ LCD.

  • Page 11: Measurements And Installation

    To be installed on a panel with the snap-in brackets provided. The thickness of the panel on which EV3 HRV is to be installed must be between 0.8 and 2.0 mm (0.031 and 0.078 in). Measurements and installation of EVD HRV The picture below shows the measurements of EVD HRV (4 DIN modules);...

  • Page 12: Measurements And Installation Of Ev3K11

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 The pictures below show how to install the EVD HRV. To remove the EVD HRV, first remove any plug-in screw terminal blocks fitted in the lower part, then, using a screwdriver, loosen the DIN rail clip, as shown in the pictures below.

  • Page 13: Measurements And Installation Of Evj Lcd

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Measurements and installation of EVJ LCD 3.4.1 Models for wall mounting The pictures below show the measurements of EVJ LCD; measurements are expressed in mm (inches).

  • Page 14: Installation Precautions

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Installation precautions Ensure that the working conditions for the devices (operating temperatures, humidity, etc.) are within the set limits. See the section TECHNICAL SPECIFICATIONS. Do not install the devices close to heat sources (heaters, hot air ducts, etc.), equipment with a strong magnetic field (large diffusers, etc.), in places subject to direct sunlight, rain, damp, excessive dust, mechanical vibrations or shocks.

  • Page 15: User Interface

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 USER INTERFACE Key functions The table below shows the functions of the keys. Name Function - On the home page, a long press on the key ends the holiday if the...

  • Page 16: Display

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. | Application manual ver. 1.0a | Code 1443DHRVE104 Display 4.2.1 HOME PAGE If the machine is switched off, "OFF" appears on the upper display, while the If the machine is switched off, "OFF" appears on the upper display, while the current time is shown on the lower display, provided the current time is shown on the lower display, provided the clock is not in error mode.
  • Page 17 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. | Application manual ver. 1.0a | Code 1443DHRVE104 EVJ LCD EV3 HRV, EVD HRV Description and EV3K11 heating and cooling. Depending on the value of the C21 parameter, the following heating and cooling.
  • Page 18 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. | Application manual ver. 1.0a | Code 1443DHRVE104 Unit of measurement of the value shown on the display when the variable displayed is of measurement of the value shown on the display when the variable displayed is a pressure in Bar.

  • Page 19: Led Evd Hrv

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 On/stand-by: ON if the controller is switched off (stand-by) OFF if the controller is switched on RUN (not available on EVD HRV): always on Days of the week (screen printed on the front of the EVJ LCD):...

  • Page 20: Electrical Connection

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 ELECTRICAL CONNECTION Example of EV3 HRV electrical connection page 20 of 74...

  • Page 21: Example Of Evd Hrv Electrical Connection

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Example of EVD HRV electrical connection page 21 of 74...

  • Page 22: Example 1 Of Ev3K11 Electrical Connection

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Example 1 of EV3K11 electrical connection Example 1 of electrical connection: EV3K11 is powered by a safety transformer. N.B.: Do not supply another device with the same transformer The maximum permitted length for connection cables of the INTRABUS port is 30 m (98.4 ft).

  • Page 23: Example Of Evj Lcd Electrical Connection

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Example of EVJ LCD electrical connection 5.4.1 Models for wall mounting Example 1 of electrical connection: EVJ LCD is powered by a safety transformer. N.B.: Do not supply another device with the same transformer The maximum permitted length for connection cables of the INTRABUS port is 30 m (98.4 ft).
  • Page 24 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Example 2 of electrical connection: EVJ LCD has a RS-485 serial port (purchasing code EVJD900N2VWTX) with INTRABUS communication protocol and is powered by a safety transformer.

  • Page 25: Models For Wall Mounting With Back-Slot For In-Wall Box

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 5.4.2 Models for wall mounting with back-slot for in-wall box N.B.: The maximum permitted length for connection cables of the INTRABUS port is 30 m (98.4 ft).

  • Page 26: Description Of Connectors

    Description of connectors 5.5.1 Description of connectors for EV3 HRV The picture below shows the layout of the EV3 HRV connectors. The tables below describe the EV3 HRV connectors. The tables give the maximum provided. Connector 1 Part Description relay digital outputs DO1... DO4 (max. 10 A): common...
  • Page 27 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Reference (GND) EV3 HRV power supply (12 VAC) EV3 HRV power supply (12 VAC) Connector 3 Part Description Positive signal RS-485 MODBUS port Negative signal RS-485 MODBUS port...

  • Page 28: Description Of Connectors For Evd Hrv

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 5.5.2 Description of connectors for EVD HRV The picture below shows the layout of the EVD HRV connectors. The tables below describe the EVD HRV connectors.

  • Page 29: Description Of Ev3K11 Connectors

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Dry contact digital input/pulse input IN7 Dry contact analogue/digital input IN5 Dry contact digital input IN6 unused 12 VDC, max. 40 mA Open collector digital output OC1 (12 V, max. 40 mA)

  • Page 30: Description Of Connectors For Evj Lcd

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 5.5.4 Description of connectors for EVJ LCD 5.5.4.1 Models for wall mounting The picture below shows the layout of the EVJ LCD connectors. The table below describes the EVJ LCD connectors. The table gives the maximum provided.

  • Page 31: Termination Resistor For The Rs-485 Modbus Line

    Termination resistor for the RS-485 MODBUS line To terminate the RS-485 MODBUS line of the EV3 HRV, place micro-switch 1 in position ON. Do not touch micro-switch 2. To terminate the RS-485 line of the EVD HRV, place micro-switch 1 in position ON.

  • Page 32: Precautions For Electrical Connection

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Precautions for electrical connection Do not use electric or pneumatic screwdrivers on the terminal blocks of the devices. If the devices have been moved from a cold to a warm place, the humidity may cause condensation to form inside. Wait about an hour before switching on the power.

  • Page 33: Menu

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Menu 6.1.1 Access levels There are three access levels for navigating within the menus, two of which require a password: U User: always visible S Servicer: visible if the servicer password or the manufacturer password has been entered M Manufacturer: visible if the manufacturer password has been entered.

  • Page 34: Quick Menus

    EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Quick menus If the EVJ LCD display is installed, all the quick menus are accessible; from the EV3 HRV, EVD HRV or EV3K11 displays only some of them will be accessible 21,0 °C-°F...

  • Page 35: Enabling Time Bands

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 If a time band is disabled, the menu jumps directly to the next day type. Hence it is important to check that the bands following the one that you wish to disable are also disabled.

  • Page 36: Selecting The Operating Modes

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 SELECTING THE OPERATING MODES The controller always makes it possible to manage heating and cooling and use either “manual” operation or “time bands” to meet the user’s needs in the best way.

  • Page 37: Holiday Mode (T01 = 2 Or 3)

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 - Economy (ECO) for this level the temperature setpoints are taken from the comfort mode settings adding an offset; the fan speed and damper opening setpoints instead are controlled by the following specific parameters:...

  • Page 38: Configuring A Device

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 CONFIGURING A DEVICE The following paragraphs list all the possible configurations of the EV3 and EVD HRV devices. Parameters For each parameter a visibility level is assigned that can be modified (only from serial port) with 4 possible values (the visibility value...
  • Page 39 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Default Default Label Description value visibility Band type for Friday Band type for Saturday Band type for Sunday Holiday end year Holiday end month Holiday end day...
  • Page 40 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Default Default Label Description value visibility Second display 0: Time 1: Humidity 2: Temperature setpoint 3: External temperature 4: Fan speed 5: Fan pressure capacity/differential...
  • Page 41 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Default Default Label Description value visibility Humidity regulation band Dehumidifying in cooling mode with priority over heat regulation 0: OFF 1: ON °C-°F Minimum humidifier supply temperature value...
  • Page 42 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Default Default Label Description value visibility s*10 Refrigeration circuit drip time -20.0 -10.0 100.0 °C-°F Refrigeration circuit forced defrost start setpoint -10.0 100.0 °C-°F Recovery heat exchanger defrost start setpoint 25.5...

  • Page 43: Configuring Inputs

    The value 0 indicates that no function is associated with the input. All 10 inputs can be used as digital inputs, but only some (IN1, IN2, IN3, IN4, IN5, IN6 and IN7 on EV3 HRV; IN1, IN2, IN3, IN4, IN5, IN9 and IN10 on EVD HRV) can be configured as analogue inputs.

  • Page 44: Configuring Input Functions

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 8.2.1 Configuring input functions Parameter value Description I01 - I10 Disabled Supply fan thermal switch Return fan thermal switch Supply flow switch Return flow switch...

  • Page 45: Universal Input Type Configuration

    0-5 V Important: only for EV3 HRV, if either input IN1 or IN2 has been set to powered up (0-5 V or 0-10 V), the other must be also. If this does not happen the reading of the input set to powered up will be affected by the offset.

  • Page 46: Exclusions

    Mixing chamber damper Configuring triac and open collector outputs Model EV3 HRV has 2 triac outputs (with an optional board), while model EVD HRV has one (1) open collector output, which can be configured with parameters I36 and I37. If it is decided to disable the triac/OC outputs they can be used as DO digital outputs.

  • Page 47: Configuring Digital Outputs

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Configuring digital outputs The parameters between I26 and I33 configure the function associated with the digital outputs. Both analogue and triac outputs can be configured as digital outputs if disabled as analogue outputs as previously explained.

  • Page 48: Serial Ports

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 SERIAL PORTS Controllers EV3 HRV and EVD HRV have the following serial ports: - INTRABUS baud rate 19,200, even, 1 stop bit proprietary communications protocol INTRABUS node 1 (MASTER)

  • Page 49: Functioning Of The Controller

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 FUNCTIONING OF THE CONTROLLER 10.1 Regulation in the incremental neutral zone The working parameters for regulation in the neutral zone consist of a setpoint, a regulation band, a reaction time and an incremental step.

  • Page 50: Regulating The Ventilation

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 10.3 Regulating the ventilation The controller manages two fans: the supply fan and the return fan. The regulation of both fans is driven by an analogue output that can be single (the same speed for both fans) or independent.

  • Page 51: Defrosting Cross-Flow Or Rotary Recovery Heat Exchanger

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 recovery heat exchanger/bypass damper Compressor In order to use this function, the (if the recovery heat exchanger is thermodynamic) relay must be configured. Cross-flow recovery heat exchanger is a passive system, meaning that when activated the corresponding relay is in rest position.

  • Page 52: Temperature Regulation

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. | Application manual ver. 1.0a | Code 1443DHRVE104 - If none of the above situations apply, the damper opening is determined by the regulation setpoint (P14…P17) associated with the ly, the damper opening is determined by the regulation setpoint (P14…P17) associated with the...

  • Page 53: Winter Pre-Heating (Hot Start)

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 10.6.2 Winter pre-heating (Hot Start) This function prevents the entry of excessively cold air into the room. On start-up, before the fans are switched on the hot water coil is fully activated for a period calculated on the basis of the external temperature, keeping the external air damper closed and the mixing chamber damper fully recirculating.

  • Page 54: Defrosting The Refrigeration Circuit

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. | Application manual ver. 1.0a | Code 1443DHRVE104 During the active defrost phases the refrigeration circuit function is inverted. To retain the heat localised on the coil tha During the active defrost phases the refrigeration circuit function is inverted. To retain the heat localised on the coil tha During the active defrost phases the refrigeration circuit function is inverted.

  • Page 55: Co 2 Regulation

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 On the basis of the parameter C58 (capacity coefficient) value the regulation will be by pressure (C58 = 0) or capacity (C58 > 0). In...

  • Page 56: 10.10.3 Humidification

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 If parameter C48 is set to 0 temperature regulation takes priority over dehumidifying; in this situation if the regulation temperature falls below the setpoint - band/2 the dehumidifier request is inhibited. This parameter can be used to limit excessive cooling caused by dehumidification, for example if a post-heating coil is not present.
  • Page 57 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Label Visibility default description Alarm in progress 0: OFF 1: ON Operating mode 0: Disabled 1: OFF 2: Comfort 3: Economy 4: Night 5: Holiday:...
  • Page 58 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Label Visibility default description Temperature regulation mode 0: Cold 1: Hot 2: Auto+Cold 3: Auto+Hot Heating/Cooling mode setting 0: Cold 1: Hot 2: Auto °C-°F Changeover probe value °C-°F...
  • Page 59 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Label Visibility default description Electric coil operating mode 0: OFF 1: Step 1 2: Step 2 Electric coil percentage SCmp Regulating the compressor Steps in operation...

  • Page 60: Signals And Alarms

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 SIGNALS AND ALARMS The alarm signals can be of the following types. - Automatic: the alarm is reset automatically once the cause of the alarm has disappeared...
  • Page 61 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Code Label on display Description Low pressure alarm The alarm is activated if the input configured as a low pressure input is active. It is deactivated if the input is inactive.
  • Page 62 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Code Label on display Description Clock alarm The alarm signal is activated when the clock shows an invalid date or is damaged and time band regulation is activated (t01).
  • Page 63 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 Code Label on display Description AL33 EA01 Probe alarms (on devices from EA1 to EA07, T&H probes of the EA08 and EA09 displays, AL34 EA02 respectively).

  • Page 64: Accessories

    Makes it possible to convert the INTRABUS signal into an RS-485 MODBUS signal (with INTRABUS communication protocol), to allow connecting cables device-user interface up to 1,000 m. EVIF22ISX can also work as programming key, to allow EV3 HRV and EVD HRV configuration upload and download. USE AS PROGRAMMING KEY...

  • Page 65: Rs-485/Usb Evif20Suxi Serial Interface

    LED switches off; vice versa if the download fails, the green LED switches off and the red LED switches on firmly (repeat the upload). For further information see the relative instruction sheet. 13.2 RS-485/USB EVIF20SUXI serial interface This interface makes it possible to connect EV3 HRV and EVD HRV to the Parameters Manager set-up software system. page 65 of 74...

  • Page 66: 0025100010 Drip Protector

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 13.3 0025100010 drip protector This drip protector shields EV3 HRV and EV3K11 from damp. 13.4 CJAV connection kit These kits make it possible to cable EV3 HRV and EVD HRV.

  • Page 67: Technical Specifications

    EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 TECHNICAL SPECIFICATIONS EV3 HRV EVD HRV Purpose control Function controller device EV3K11 EVJ LCD EV3 HRV EVD HRV Construction of the control Built-in electronic device...
  • Page 68 Use cables of an adequate section for the current running through them. For EV3 HRV cabling we recommend using the CJAV39 connection kit (to be ordered separately). For EVD HRV cabling instead, we recommend using the CJAV38 connection kit (to be ordered separately).
  • Page 69 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 - 12 VAC (±15%), 50/60 Hz (±3 Hz), max. 10 VA not insulated EVJ LCD - 12 VDC (±15%), max. 10 W not insulated EV3 HRV...
  • Page 70 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 EV3K11 none EVJ LCD none Dry contact digital inputs (5 VDC, 1.5 mA) Power supply: none Protection: none Minimum ON time for fast inputs to detect the pulse: 2.5 ms...
  • Page 71 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 1 or Type 2 actions EVD HRV EV3K11 Not applicable EVJ LCD Not applicable EV3 HRV 4+4 digit LED display EVD HRV EVD HRV Signalling LED...
  • Page 72 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 page 72 of 74...
  • Page 73 EVCO. The customer (manufacturer, installer or end-user) assumes all responsibility for the configuration of the device. EVCO accepts no liability for any possible errors in this document and reserves the right to make any changes, at any time without prejudice to the essential functional and safety features of the equipment.
  • Page 74 EVCO S.p.A. EV3 HRV & EVD HRV | Application manual ver. 1.0a | Code 1443DHRVE104 EVCO S.p.A. Via Feltre 81, 32036 Sedico Belluno ITALY Tel. 0437/8422 | Fax 0437/83648 info@evco.it | www.evco.it page 74 of 74...

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