SystemAir SAVE VTR 250/B Installation And Service
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SystemAir SAVE VTR 250/B Installation And Service

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SAVE VTR 250/B
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Installation and Service
Document in original language | 211473 · A001

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  • Page 1 SAVE VTR 250/B Installation and Service Document in original language | 211473 · A001...
  • Page 2 This also applies to products already ordered, as long as it does not affect the previously agreed specifications. Systemair is not liable or bound by warranty if these instructions are not adhered to during installation or service. 211473 | A001...

  • Page 3: Table Of Contents

    Contents Declaration of Conformity .........1 Main menu ......... 14 7.7.1 Unit Information ....14 Disposal and recycling ........2 7.7.2 Alarms ......... 15 Warnings............2 7.7.3 Week Schedule...... 18 About this document........2 7.7.4 Filter ......... 19 Product information .........2 7.7.5 System Preferences..... 20 General ..........2 7.7.6 Service .......
  • Page 4 Contents 12.5.1 Outdoor/Exhaust air dampers......... 46 12.6 Filters ..........47 211473 | A001...

  • Page 5: Declaration Of Conformity

    Heat recovery ventilation unit: SAVE VTR 250/B (The declaration applies only to product in the condition it was delivered in and installed in the facility in accordance with the included installation instructions. The insurance does not cover components that are added or actions carried out subsequently on the product).

  • Page 6: Disposal And Recycling

    General The SAVE VTR 250/B is a heat recovery ventilation unit, with a built in rotary heat exchanger. The SAVE VTR 250/B is suitable for smaller flats or houses. It supplies filtered outdoor air to residential areas and extract air from bathroom, kitchen and wet rooms.

  • Page 7: Installation Recommendation Regarding Condensation

    Transport and storage The SAVE VTR 250/B should be stored and transported in such a way that it is protected against physical damage that can harm panels etc. It should be covered so dust, rain and snow cannot enter and damage the unit and its components.

  • Page 8: Technical Data

    | Product information The appliance is delivered in one piece containing all necessary components, wrapped in plastic on a pallet for easy transportation. Technical Data 5.4.1 Dimensions and Weight, L model Fig. 1 Dimensions of left hand unit * Water coil connections. ** Drainage.

  • Page 9: Dimensions And Weight, R Model

    Product information | 5.4.2 Dimensions and Weight, R model Fig. 2 Dimensions of right hand unit * Water coil connections. ** Drainage. The unit weight is 56 kg. 211473 | A001...

  • Page 10: Connections Left And Right Models

    Outdoor air Cooker hood air Exhaust air Extract air 5.4.4 Power consumption and fuse size SAVE VTR 250/B come with 500 W or 1000 W installed re-heater battery. Table 1 Electrical data 500 W 1000 W Re-heater (W) 172 W...

  • Page 11: Unpacking

    Verify that all ordered equipment are delivered before starting the installation. Any discrepancies from the ordered equipment must be reported to the supplier of Systemair products. Where/how to install The SAVE VTR 250/B can be installed in any room in the household. Installation procedure 1 Prepare the surface where the unit is to be mounted.

  • Page 12: Open The Front Hatch

    | SAVECair control Open the front hatch The front hatch is mounted with hinges. Hinges to the right on an L model and to the left on an R model. Open the hatch with the two latches and swing the hatch open. SAVECair control General SAVECair is a modern touchscreen LCD control panel, simply known as HMI —...

  • Page 13: Menu Overview

    SAVECair control | Menu overview A. Return to home screen B. Basic read-only information about the unit C. Currently active alarms and alarm history D. Configure and check week schedule E. Check and change remaining time till filter change F. General system preferences G.

  • Page 14: Home Screen

    | SAVECair control Home screen Touching home icon (pos. A) in drop- down menu list (pos. 1) will always returns you to home screen after commissioning. 1. Drop-down menu list 2. Active user mode 3. Airflow settings 4. Temperature settings 5.
  • Page 15 SAVECair control | Icon Text Description Sets speed of both supply and extract air fans to Low levels when user is away from home for a long period of time. HOLIDAY ECO mode is active. Delay in days. Sets speed of both supply and extract air fans to maximum High levels and temperature setpoint offset to –3 K when apartment is more crowded than usual.

  • Page 16: Temperature Settings

    | SAVECair control 7.5.2 Temperature settings Temperature can be set at SET TEMPERATURE menu accessible from the home screen by touching TEMPERATURE icon with thermometer. Default temperature value is 18°C (range 12–30°C). Use up and down arrows or a slider to change the value. Then touch the SET to confirm changes.

  • Page 17: Indoor Air Quality

    SAVECair control | Important It is not recommended to set fan to Off in standard households. If manual fan stop is activated, the unit should be provided with dampers in exhaust and fresh air ducts to avoid cold draught and risk of condensation when the unit has been stopped.

  • Page 18: Main Menu

    | SAVECair control Icon Text Description Function prevents formation of the ice on the heat exchanger during cold Defrosting outdoor temperatures. Warm air from the living space is used to defrost the heat exchanger using a damper inside the outdoor air duct. The unit switches from outdoor air to Secondary air secondary air while the extract air fan stops and warm secondary air increases the temperature inside the heat exchanger.

  • Page 19: Alarms

    SAVECair control | 7.7.1.1 Components Type and settings of heat exchanger, heater, cooler, extra controller. 7.7.1.2 Sensors Values from sensors and load of fans (rpm). 7.7.1.3 Input Status Status of configured analog, digital and universal inputs. Connected component type and raw value (volts) is displayed. 7.7.1.4 Output Status Status of configured analog, digital and universal outputs.
  • Page 20 | SAVECair control Alarm name Explanation Do the following Indicates failure of pre-heater to Check the pre-heater reset button. Defrosting error preheat the incoming outdoor air (in Check the pre-heater cabling. case Extra controller is configured as Contact your installation company or place of purchase.
  • Page 21 SAVECair control | Alarm name Explanation Do the following Rotor guard Indicates a rotor malfunction. If the rotating heat exchanger has No rotation guard signal for 180 stopped. Check the rotor belt. seconds. If the heat exchanger is still rotating, check that the quick connector for the sensor is connected and that there is an air gap of 5-10 mm...

  • Page 22: Week Schedule

    | SAVECair control Alarm name Explanation Do the following Time for filter change. Change the filter. Filter Change filter according to the instructions in the User Manual. Details about filter retailers can be found in Help menu. Extra controller alarm Error from external device.

  • Page 23: Filter

    SAVECair control | 7.7.3.1 Schedule airflow settings Touch settings icon to go to SCHEDULE AIRFLOW SETTINGS menu. In this menu set airflow level for scheduled and unscheduled periods. Available levels: Off, Low, Normal, High or Demand. Set temperature setpoint offset for both periods (-10°C – 0°C). Demand level is available only if Demand Control or External fan function is active.

  • Page 24: System Preferences

    | SAVECair control 7.7.5 System Preferences Configuration of unit location, language and time. Change the following information: • Language (default language is English) • Country (default country is UK) • Unit address (address, post code) • Unit date and time, activate or deactivate summer/winter time switch. Time will automatically change between summertime and wintertime according to European standard, based on Greenwich time zone and set unit location.
  • Page 25 SAVECair control | 7.7.6.2 Output Configuration of outputs. Settings for analog, digital and universal output terminals on the main board and connection board, configuration of functionality. Fan output PWM (Pulse-width modulation) signal and triac output are already pre-addressed to specific terminals and cannot be changed, all other outputs are free for configuration by commissioning.
  • Page 26 | SAVECair control • Set outdoor air temperature interlock. Default setting is 10°C. Range: 0–20°C. • Set actuator type. Default value is 0–10 V Range: 0–10 V / 2–10 V / 10–0 V / 10–2 V. • Set circulation pump stop delay. Default setting is 5 minutes. This option is available if Water / Change-over heat- er type is selected.
  • Page 27 SAVECair control | Pressure Setting Flow (CAV) Manual External (VAV) Pa, inwc Airflow l/s, m /h, cfm measurement unit. P-Band 0–100% 0–3000 rpm 0–500 Pa 0–100% Default setting: 150 Pa I-time Off / 1–240 sec. Off / 1–240 sec. Off / 1–240 sec. Off / 1–240 sec.
  • Page 28 | SAVECair control Set I-time, default setting is Off, Range: Off/1–120 sec. • Select airflow level for Improving Air Quality. Range: Normal / High / Max. • Select airflow level for Good Air Quality. Range: Low / Normal. RH Transfer Control Note: Setting is available if heat exchanger type is set as Rotating.
  • Page 29 Fan speed differ for each household because of different unit size, duct system and system pressure. In order to find correct fan speed, external tool must be used at Systemair website. 1. Go to Systemair website and find your unit.

  • Page 30: Help

    | SAVECair control • Shows communication information for HMI. Modbus device number (1–10) and Modbus termination: Active/ Inactive. 7.7.6.7 Logs Information about alarms, fans and parameters are stored in Logs menu. Fans Levels • Time counter for each supply air fan level duration is displayed. Counted and total time. Reset counted time. Level 1: 0% Level 2: 1–29% Level 3: 30–44%...

  • Page 31: Electrical Connections

    Fig. 6 Print card position Main board layout The SAVE VTR 250/B is equipped with built-in regulation and internal wiring. The figure shows the main circuit board. See wiring diagram for more information. 211473 | A001...
  • Page 32 | Electrical connections Fig. 7 Main circuit board connections Position Description Main circuit board Connection to the external connection box Terminals for a heater Terminals for a TRIAC Terminals for the mains power supply Terminals for power supply of extract air fan Terminals for power supply of supply air fan Terminals for internal relative humidity/temperature sensor Analog input 1 —...

  • Page 33: External Connections (Connection Board)

    Before starting the system | External connections (Connection board) External connections to the main circuit board are done via connection board situated outside of the unit. Fig. 8 External connection box and board Position Description Connection to the main circuit board Connection for external control panel (HMI) or Internet access module (IAM) Modbus RS485 connection AI6–7...

  • Page 34: Service

    | Service Service 10.1 Warnings Danger • Make sure that the mains supply to the unit is disconnected before performing any maintenance or electrical work! • All electrical connections and maintenance work must be carried out by an authorized installer and in accordance with local rules and regulations.

  • Page 35: 10.2 Internal Components

    Service | 10.2 Internal components Fig. 9 Internal components Position Description Mounting bracket External connections Extract air fan Supply air filter Extract air filter Main print card Rotating heat exchanger Supply air fan Supply air sensor Outdoor air sensor Relative humidity/Extract air temperature sensor Overheat protection sensor Internal electrical re-heater 10.2.1...

  • Page 36: Overheat Protection Reset Button

    New sets of filters can be acquired from your installer or wholesaler. 10.2.1.3 Heat exchanger SAVE VTR 250/B is equipped with a highly efficient, rotating heat exchanger. Required supply air temperature is there- fore normally maintained without adding additional heat.

  • Page 37: 10.3 Replacing Rotor Drive Belt

    Service | Fig. 10 Overheat protection reset button 10.3 Replacing rotor drive belt Note: Depending on model, left or right, it may be necessary to remove the heat exchanger in order to replace a broken drive belt since the belt pulley cannot be accessed. If the rotor motor is placed at the back of the unit, it is recommended to remove the heat exchanger to change the drive belt, see chapter 10.3.2.

  • Page 38: Heat Exchanger Mounted

    | Service Fig. 11 Rotor drive belt 10.3.1 Heat exchanger mounted 1. Stop the unit by disconnecting the mains. 2. Open the front hatch. 3. Remove the broken drive belt. 4. Use tape to attach the drive belt to the rotating heat exchanger, and rotate the exchanger by hand to get hold of the drive belt.

  • Page 39: Troubleshooting

    Troubleshooting | Note: If the drive belt slips, the drive belt may be too long and needs to be shortened. Cut the drive belt 5 mm and go to step 7. 9. Mount the heat exchanger. Don’t forget to reconnect the rotor power and sensor cables. 10.Close the front hatch and connect the unit to mains.
  • Page 40 | Troubleshooting Action Malfunction 1. Check the display for alarms. 2. Check the active user functions in HMI screen if Defrosting function is running. 3. Check set supply air temperature in the HMI. 4. Check if ECO mode is activated in HMI (it is a power saving function and prevents the heater from activating).

  • Page 41: Accessories

    Accessories | Accessories SAVE VTR 250/B have many available accessories that can be used to expand functionality of the unit and increase comfort level. Recommended accessories can be always found at Systemair website www.systemair.com by searching the article number or the name of the desired accessory.
  • Page 42 • 3 — Extract air • 4 — Exhaust air Component/product — Article number: • Systemair-1 CO2 duct sensor — 14906 • Systemair-E CO2 sensor — 14904 • Room sensor 0-50C (temperature) — 211525 • Systemair-E CO2 RH Temperature — 211522 Installation and connection 1.

  • Page 43: 12.3 Temperature Control

    Accessories | 12.3 Temperature control 12.3.1 Electrical duct pre-heater Electrical pre-heater can be installed in the outdoor air duct to pre-heat outdoor air before it reaches the unit and pre- vent icing in the heat exchanger. • PH — electrical pre-heater •...

  • Page 44: Internal Water Heater

    | Accessories 3. Go to Components menu, select Extra Controller menu and select mode as Preheater. Pre-heater setpoint can be set in the same menu. Do other advanced settings if necessary. 4. Configure connection of the pre-heater. Go to Service menu. Select Output menu. In next menu select DIGITAL tab.

  • Page 45: Duct Water Heater

    Accessories | Fig. 14 Water heater connections Configuration 1. Go to Service menu 2. Enter password (default 1111) 3. Activate the actuator. Go to Components menu, select Heater menu and select type as Water. Choose actuator voltage type. Do advanced settings if necessary. 4.

  • Page 46: Duct Water Cooler

    | Accessories • Duct sensor -30-70C (SAT) — 211524 • Surface sensor -30-150C (FPT) — 211523 Installation and connection 1. Install water heater in the duct. Connect pipes, 2/3–way valve and actuator. Important Do NOT use 24V DC power output from the connection board for valve actuator. 2.
  • Page 47 Accessories | A duct water cooler is supposed to be installed in supply air duct to provide a cooled down air to the apartment. • WC — water cooling battery • SAT — supply air temperature sensor • S — valve actuator •...

  • Page 48: Change-Over Coil (Dx)

    | Accessories 4. Configure connection of the duct cooler. Go to Service menu. Select Output menu. In next menu select ANALOG tab. Select the analog output to which the water cooler is connected. Example if it is connected to AO3 on the con- nection board, then select ANALOG OUTPUT 3 and select Y3 Cooling from the output type list.

  • Page 49: 12.4 Airflow Control

    Accessories | Fig. 17 Change-over heating/cooling connections Configuration Before change-over heating/cooling can be activated, it must be configured in the control panel. 1. Go to Service menu 2. Enter password (default 1111) 3. Go to Components menu, select Heater menu and select type as Change-over. Choose actuator voltage type. Do advanced settings if necessary.

  • Page 50: 12.5 Installation/Maintenance

    | Accessories 12.5 Installation/Maintenance 12.5.1 Outdoor/Exhaust air dampers If manual fan stop is activated, the unit should be provided with dampers in exhaust and outdoor ducts to avoid cold draught and risk of condensation when the unit has been stopped. •...
  • Page 51 Accessories | 12.6 Filters The filters need to be replaced when polluted. New sets of filters, if possible, should be acquired directly from Systemair to meet filter quality standards. If that is not possible, please contact your installer or wholesaler.
  • Page 52 Systemair UAB Linų st. 101 LT–20174 Ukmergė, LITHUANIA Phone +370 340 60165 Fax +370 340 60166 www.systemair.com...

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