SAVE VTC 300 Service & Accessories Installation Manual GB Document in original language | · v1.
© Copyright Systemair UAB All rights reserved E&OE Systemair UAB reserves the rights to change their products without notice. 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 the warranty if these instructions are not adhered to during installation or service. | v1.
Contents 1 2 3 4 5 Overview ......................................................1 1.1 Warranty ..............................................1 1.2 Type label.............................................1 1.3 Disposal and recycling .............................1 Important Safety Information .............................1 2.1 Intended Use.........................................2 2.2 Admonitions .........................................2 Configuration .................................................
Overview | 1 Overview The key to proper and safe operating of the unit is to read this manual thoroughly, use the unit according to given guidelines and follow all safety requirements. 1.1 Warranty For the assertion of warranty claims, the products must be correctly connected and operated, and used in accordance with the data sheets. Further prerequisites are a completed maintenance plan with no gaps and a commissioning report. Systemair will require these in the case of a warranty claim. 1.
2 | Configuration • Do not allow children to play with the device. 2.1 Intended Use • Abide by the system-related conditions and requirements of the system manufacturer or plant constructor. • Keep all the warning signs on the device and in a legible condition. • The device is not to be used by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction.
Configuration | On and Off slider to activate or deactivate a function. White bubble — function is inactive, green bubble — function is active. Back button to return to a previous menu, located at the upper left corner Up arrow to increase a value CANCEL Button to cancel changes Down arrow to decrease a value SET/OK Buttons to confirm changes Some menus have more than one page. Touch page indicator in the top right corner to go to the next page.
4 | Configuration Icon Text Description AUTO Automatic airflow control. AUTO mode is available for selection when Demand Control, Week Schedule and/or external fan control functions are configured, otherwise AUTO mode icon won’t be visible in active user modes menu. AUTO mode activates Demand Control, Week Schedule and/or external fan control functions. Demand is available to choose as airflow setting in Week Schedule. Manual selection of airflow levels.
Configuration | Icon Text Description Configurable Digital Input 1 Configurable digital input for custom user function. Airflow levels for both fans are freely configurable. High–priority function. Configurable Digital Input 2 Configurable digital input for custom user function. Airflow levels for both fans are freely configurable. Mid–priority function. Configurable Digital Input 3 Configurable digital input for custom user function. Airflow levels for both fans are freely configurable.
6 | Configuration 3.3.2 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 OK button to confirm changes. Temperature set point is for room air temperature, supply air temperature or for extract air temperature depending on which control mode is active.
Configuration | Use up and down arrows or a slider to change the airflow value. The airflow may be adjusted in these steps: Off/Low/Normal/High. These settings control output signals to the supply and extract fans. 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.
8 | Configuration Icon 3.5 3.5.1 Text Description Cooling recovery Automatic cooling recovery is active when extract air temperature from apartment is lower than outdoor air temperature and there is a cooling demand (temperature setpoint is lower than outdoor air temperature). No cooling recovery with heating demand. If the outdoor air temperature is higher than then thee indoor air temperature and there is a heating demand, function Free heating is activated instead.
Configuration | 3.5.1.2 Sensors Values from sensors and load of fans (rpm). 3.5.1.3 Input Status Status of configured analog, digital and universal inputs. Connected component type and raw value (volts) is displayed. 3.5.1.4 Output Status Status of configured analog, digital and universal outputs. Connected component type and value (volts) is displayed. 3.5.1.5 Unit Version Unit model name, manufacturer number, serial number and unit software versions for Mainboard, HMI and IAM. 3.5.
10 | Configuration Alarm name Explanation Do the following Defrosting error Indicates failure of pre-heater to preheat the incoming outdoor air (in case Extra controller is configured as Preheater). Check the pre-heater reset button. Check the pre-heater cabling. Contact your installation company or place of purchase. Defrosting error may be caused by extremely low outdoor air temperatures or pre-heater failure. • Alarm stops the unit.
Configuration | Alarm name Explanation Do the following Rotor motor feedback Indicates a rotor malfunction. No feedback signal from the rotor motor for 180 seconds. If the rotating heat exchanger has stopped, check the rotor belt. Replace the belt if it is broken. If the heat exchanger is still not rotating check if the quick connector of the rotary heat exchanger motor is connected. If the alarm persists, the motor may be faulty. Contact your installation company or place of purchase.
12 | Configuration Alarm name Explanation Do the following Built-in extract air temperature sensor Indicates internal extract air temperature sensor malfunction. Active: measured temperature = 0°C Returned: measured temperature > 5°C Check that sensor is connected properly and cable is not damaged. Contact your installation company or place of purchase. Extra controller alarm Error from external device. Check if external device is connected properly and cable is not damaged.
Configuration | 3.5.3 Week Schedule The unit can be configured to operate at set airflow levels up to two time periods (00:00–23:59) on user selected days. Week Schedule is active only during AUTO mode. It is possible to activate or deactivate digital output for schedule and unscheduled periods. 3.5.3.1 Schedule Airflow Settings Touch settings icon to go to SCHEDULE AIRFLOW SETTINGS menu. In this menu set airflow level for scheduled and unscheduled periods.
14 | Configuration Set the time. Touch the START TIME or END TIME values to change time. Use arrow buttons decrease value. Confirm with OK button. and to increase or Note: Scheduled time can start but never end at midnight (00:00). The latest END TIME period is 23:59. Scheduled time cannot go to the next day. 12 or 24 hour time format can be changed in System Preferences menu. If necessary, activate second scheduled period and set up time.
Configuration | 3.5.6.1 Input Configuration of inputs Settings for analog, digital and universal input terminals on the main board and connection board, configuration of functionality. Table 1 Digital universal inputs available for selection User Modes Activation of specific user modes. Central Vacuum Cleaner Function Activation of Central vacuum cleaner function. Cooker Hood Function Activation of Cooker Hood function. External Stop Air handling unit is stopped by an external command.
16 | Configuration Table 3 Digital outputs available for selection Step Controller Y1 Heating Step Controller Y3 Cooling Step Controller Y4 Extra Controller Heater/Cooler/Extra controller control signals. Sum Alarm Fault indicating output. Outdoor-/Exhaust Air Damper Outdoor-/Exhaust air damper control signal. Secondary air Secondary air damper control. Activate Cooling Cooling mode activation signal to an external system.
Configuration | Range: 0–10 V / 2–10 V / 10–0 V / 10–2 V. Heater • Choose heater type. Each selection unlocks additional configuration options. Default setting is based on unit type. Available types: None / Electrical / Water / Change-over. • 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 temperature. Default setting is 10°C. This option is available if Water / Change-over heater type is selected. Range: 0–20°C. • Set circulation pump stop delay.
18 | Configuration 3.5.6.4 Control Regulation Configure how the system is controlled. Temperature Control • Configure temperature controller. Choose control mode: Available modes: Supply air temperature control / Room temperature control / Extract air temperature control Note: Room temperature control mode requires an accessory to measure room temperature. • Choose temperature unit. Default setting is Celsius. Available units: Celsius / Fahrenheit • Set P-band. Default setting is 20°C. Set I-time.
Configuration | Setting Manual RPM Pressure (VAV) Flow (CAV) External Pressure Sensors — configure sensor voltage relation to pressure. Set value at which fan alarm occurs. Default setting is None - - Supply air fan control sensor: Pressure at 0V: 0-500 Pa, default setting 0 Pa Pressure at 10V: 0-2500 Pa, default setting 500 Pa. Extract air fan control sensor: Pressure at 0V: 0-500 Pa, default setting 0 Pa.
20 | Configuration Setpoint, default setting is 45% humidity. Range: 1–100% RH. Set P-band, default setting is 4g/kg. Range: 1–100g/kg. Set I-time, default setting is Off. Range: Off/1–120 sec. Defrosting Control Note: Setting is available if heat exchanger type is set as Plate. The unit is equipped with an automatic defrost function that is activated when there is risk of icing in the area around the heat exchanger. • Select defrosting mode. Default setting is Normal.
Configuration | Fig. 4 Example speed for supply and extract air 4. Use this procedure to find fan speed for all airflow levels: MINIMUM LEVEL, LOW LEVEL, NORMAL LEVEL, HIGH LEVEL, MAXIMUM LEVEL. 5. Finally in the control panel go to Service menu, enter the password, then go to Control Regulation → Fan Control. Choose RPM as airflow type and in sub-menu Airflow Level Settings enter calculated fan speed values for each level. 3.5.6.5 User Modes Set airflow level, duration and offset for each user mode.
22 | Configuration Connecting the IAM to wireless network 1. If your wireless router does not support WPS, Wi-Fi connection should be set up manually. Therefore you need to find Wi-Fi name and add password using control panel. 2. In control panel go to Service -> Communication -> WLAN settings menu. 3. Press Scan for networks button. IAM will search for available Wi-Fi networks (should not take longer than one minute). 4.
Service | 3.5.7 Help FAQ, troubleshooting of alarms, contact information for support is provided in this menu. • Service partner — information about service partner. • Company • Telephone • Homepage • Email • User modes— detailed description of all user modes. • Functions— detailed description of different user functions. • Alarms— detailed description of all alarms. • Troubleshooting— information about all different possible malfunctions. 4 Service 4.
24 | Service 4.3 Internal Components Fig.
Service | 4.3.1.2 Filters The air filter captures dust, mold, pollen and other particulate matter. The filters need to be replaced when polluted. New sets of filters can be acquired from your installer or wholesaler. 4.3.1.3 Defrost damper The built in bypass damper (pos. 5 figure 5) is involved in defrosting, cool recovery, and supply air temperature control of the unit. The damper motor is controlled by an analogue 0–10 V signal.
26 | Service Fig.
Service | Fig. 8 External connection box and board Position Description 1 Connection to the main circuit board 2 Connection for external control panel (HMI) or Internet access module (IAM) 3 Modbus RS485 connection AI6–7 Freely configurable Analog input. None/Input type selection in HMI. DO1–4 Freely configurable digital output.
28 | Accessories 5. Check the airflow settings in the control panel. 6. Check week schedule settings (chapter 3.5.3). 7. Check filters. Is change of filters required? 8. Check diffusers/louvres. Is cleaning of diffusers/louvres required? 9. Check fans and heat exchange block. Is cleaning required? 10.Check if the buildings air intake and roof unit (exhaust) have been clogged. 11.Check visible duct runs for damage and/or build up of dust/pollution. 12.Check diffuser/louvre openings.
Accessories | 5.1.1 | v1.
30 | Accessories Note: The internet access module uses TCP port 8989. Make sure it is not blocked. Description A. Connect the Internet Access Module (IAM) to the Connection Board (CB) with included RJ10 cable. B. Power up the IAM with included power supply cable and adapter (230 V~). C. Enable access to the internet. Three options are available: • C1 — Activate WPS function on your router (if available) and press the button on the Internet Access Module for 5 seconds.
Accessories | • IAQ — indoor air quality sensor (CO2, RH and temperature) • CO2 — CO2 duct sensor • 1 — Outdoor air • 2 — Supply air • 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. Install IAQ sensor in the duct or the room depending on the transmitter type. 2.
32 | Accessories • ELH — Electrical heater • OHT — overheat protection sensor • 1 — Outdoor air • 2 — Supply air • 3 — Extract air • 4 — Exhaust air Component/product — Article number: • Reheater VTC 300 R (for right version model) — 138107 • Reheater VTC 300 L (for left version model) — 139312 Installation and connection 1 Remove the cover of reheater by loosening screws at the front (pos. 1). | v1.
Accessories | 2 Remove knobs in the reheater compartment (pos. 1), they will be used to hold the reheater in place. Remove the main circuit board cover plate by removing 2 screws (pos. 2) in the lower front edge of the plate. 3 Insert reheater, lead cables trough holes on the side (pos. 1). Secure reheater in place using previously removed knobs (pos. 2). • Connect reheater control wires to the terminal block marked as HEATER (pos. 4) on the main circuit board.
34 | Accessories • ELH — electric heater ECT 230 V~ • ECT — extra controller temperature sensor • OAT — outdoor air duct temperature sensor • SAT — supply air temperature sensor ELH 230 V~ AI SAT RL ELH AI RL 3 • RL — relay • 1 — Outdoor air 2 1 ELH AI 4 DO DO ECT SAT • 2 — Supply air • 3 — Extract air • 4 — Exhaust air Component/product — Article number: • CB 160-2,7 230V/1 Duct heater — 5382 • CB Preheater Connection Kit — 142852 5.3.2.
Accessories | 5.3.2.2 Heater installed in the supply air duct Installation and connection 1. Install an electric heater (ELH) at least 100 mm distance from the unit in the supply air duct. A relay (RL) is used to control the heater. Connect relay to any free digital output on the connection board (CB). 2. Connect the power supply to the electric heater via a relay. A circuit breaker (BRK) is not included in the package and must be ordered separately. It must be installed in the circuit. 3.
36 | Accessories 5.3.3 Duct water heater A duct water heating battery is supposed to be installed in supply air duct.
Accessories | 4. Configure control signal to the actuator. Go to Service menu. Select Output menu. In next menu select ANALOG tab. Select the analog output to which the control wire of the actuator is connected. Example if it is connected to AO3 on the connection board, then select ANALOG OUTPUT 3 and select Y1 Heating from the output type list. 5. Configure frost protection sensor (FPT). Go back to Input menu. Select ANALOG tab. Select the analog input to which the frost protection sensor is connected.
38 | Accessories Note: A duct temperature sensor can be connected to analog inputs 6–7 on the connection board for better access and then configured as a supply air temperature sensor. However the internal supply air temperature sensor must be disabled in the control panel first. Configuration 1. Go to Service menu 2. Enter password (default 1111) 3. Activate the actuator. Go to Components menu, select Cooler menu and select type as Water. Choose actuator voltage type. Do advanced settings if necessary.
Accessories | Installation and connection 1. Install the ground heat exchanger (GE) at least 100 mm distance from the unit in the outdoor air duct. Relay (RL) is used to control the ground heat exchanger. Connect the relay to any free digital output on the connection board (CB). 2. Connect the ground heat exchanger (GE) and the power supply to the relay (RL). A circuit breaker (BRK) is not included in the package and must be ordered separately. It must be installed in the circuit. 3.
40 | Accessories • WH/WC — change-over coil • FPT — frost protection sensor (optional) • SAT — supply air temperature sensor • THS — thermostat for sensing if the temperature of heating/cooling fluid in the system is right (optional) • HP — heat pump (or other device for heating and cooling) • CWP — water pump • RL — relay • 1 — Outdoor air • 2 — Supply air • 3 — Extract air • 4 — Exhaust air Component/product — Article number: • Duct sensor -30-70C (SAT) — 211524 • Surface sensor -30-150C (FPT) — 211523 •
Accessories | Configuration Before change-over heating/cooling can be activated, all components 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. Do advanced settings if necessary. Go to Components menu, select Cooler menu and select type as Change-over. Do advanced settings if necessary. 4. Configure control signal of the heat pump or similar device. Go to Service menu.
42 | Accessories 5.5 5.5.1 Installation/Maintenance 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.
Accessories | Note: 24 VAC dampers can be powered and controlled only by using a relay mounting kit with a transformer (article number: 153548). This installation procedure describes how to connect dampers powered by 230 V~ with a relay mounting kit without transformer (article number: 153549). Installation and connection 1. Install dampers (U/V). 2. Connect control signal wires (24V, DO) coming out from the relay box (RL) to any free digital output on the connection board (CB). 3.
44 | Accessories 1. A differential pressure switch 2. Metal tube 3. Exhaust air direction 4. Exhaust air duct 1. Mount a differential pressure switch in a suitable place, for example on or near the outlet duct from the kitchen fan. Set the pressure switch to the lowest possible pressure, for example 20 Pa. 2. There are two possible installation cases. A pressure switch tube is installed in the duct: a.
Accessories | Note: • If the 24 V power supply on the connection board (CB) is used for other equipment, the number of control panels that can be powered from the unit will decrease. • A single active control panel draws 50 mA. The connection board supplies up to 250 mA. If no other accessories use 24 V power supply from the unit, up to 5 control panels can be connected without a need of external power supply. In order to connect more than 5 control panels, an external power supply is required.
46 | Accessories 5.5.4 Presence detector A presence detector is used to activate one of required functions when someone is present in the room. Universal input can be easily re-configured to activate a different function. Component/product — Article number: • Presence detector/IR24 — 6995 Configuration 1. Go to Service menu 2. Enter password (default 1111) 3. Go to Input menu. Select UNIVERSAL tab. 4. Select the universal input to which wire from the presence detector is connected.
| v1.
Phone +370 340 60165 Fax +370 340 60166 www.systemair.com SAVE VTC 300 · · · en_GB · 2021-04-22 · v1.1 Systemair UAB Linų st.
