SystemAir SAVE VTC 500 Service & Accessories Installation Manual

Page 1

SAVE VTC 500 Service & Accessories Installation Manual

Document in original language | · 01_1.8.0

Page 2

© 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.

| 01_1.8.0

Page 3

Contents

1 Overview . .. . .. . . .. . .. . . .. . .. . .. . . .. . .. . . .. . .. . . .. . .. . . .. . .. . .. 1

1.1 Warranty... . . . .. . .. . . .. . .. . . .. . .. . .. . . .. . .. . . .. . .. . . .. 1

1.2 Type label..... . . . .. . .. . . .. . .. . . .. . .. . .. . . .. . .. . . .. . .. . 1

1.3 Disposal and recycling ... . . . .. . .. . . .. . .. . . .. . .. . . .. 1

2 Important Safety Information .. . .. . .. . . .. . .. . .. . . .. . .. . . .. 1

2.1 Intended Use . . . .. . .. . . .. . .. . .. . . .. . .. . .. . . .. . .. . . .. . .2

2.2 Admonitions .. . . . .. . .. . .. . . .. . .. . . .. . .. . . .. . .. . .. . . .. 2

2.3 Declaration of Conformity . . . .. . .. . . .. . .. . .. . . .. . .3

3 Technical data .. . . .. . . .. . .. . . .. . .. . .. . . .. . .. . . .. . .. . . .. . .. . .. . 4

3.1 Power consumption and fuse size ... . . .. . . .. . .. 4

4 Configuration .. . . . .. . .. . . .. . .. . . .. . .. . .. . . .. . .. . . .. . .. . . .. . .. . 4

4.1 General... . . .. . . .. . .. . . .. . .. . . .. . .. . .. . . .. . .. . . .. . .. . . .4

4.2 Startup wizard .. . . .. . . .. . .. . .. . . .. . .. . . .. . .. . .. . . .. . .4

4.3 Common symbols. .. . .. . . .. . .. . . .. .. . . .. . .. . . .. . .. . . 4

4.4 Menu overview . . .. . . .. . .. . .. . . .. . .. . . .. . .. . .. . . .. . .5

4.5 Home screen. . . . .. . .. . . .. . .. . . .. . .. . .. . . .. . .. . . .. . .. . 5

4.5.1 User modes ..... . . . .. . .. . . .. . .. . . .. . .. . . .5

4.5.2 Temperature settings ...... . . . .. . .. . .. . 8

4.5.3 Airflow settings .. .. . .. . . .. . .. . . .. . .. . .. . 9

4.5.4 Indoor Air Quality ..... . . . .. . .. . .. . . .. . .. 9

4.5.5 Status line ...... . . .. . . .. . .. . . .. .. . . .. . .. . . 9

4.6 Description of User function icons .. . . . .. . .. . .10

4.7 Main menu ... . . . .. . .. . . .. . .. . . .. . .. . .. . . .. . .. . . .. . . 11

4.7.1 Unit Information . . . . .. . .. . .. . . .. 11

4.7.2 Alarms . . . . .. .. . . .. . .. . . .. . .. . . .. . .. . . .. 12

4.7.3 Week Schedule .. . . . .. . .. . .. . . .. . .. . . 15

4.7.4 Filter . . . . .. .. . . .. . .. . . .. . .. . . .. . .. . . .. 16

4.7.5 System Preferences .. . . .. . . .. . .. 16

4.7.6 Service .. . . .. . . .. . .. . . .. . .. . . .. . .. . .. . 17

4.7.7 Help... . . .. . . .. . .. . . .. . .. . . .. . .. . .. . . .. . . 24

5 Electrical connections .. .. . .. . .. . . .. . .. . . .. . .. . . .. . .. . . .. .. 25

5.1 Main board layout ..... . . .. . . .. . .. . . .. . .. . . .. . .. . . 25

5.2 External connections (Connection

board) .... . . . .. . . .. .. . . .. . .. . . .. . .. . . .. . .. . .. . . .. . .. . 26

6 Service .. . . .. . .. . . .. . .. . . .. . .. . .. . . .. . .. . . .. . .. . . .. . .. . . .. . .. . 27

6.1 Warnings. . .. . .. . .. . . .. . .. . . .. . .. . . .. . .. . . .. .. . . .. . .. 27

6.2 Internal Components. . . .. . .. . . .. . .. . . .. . .. . . .. . .. 28

6.2.1 Description of

Components . . . .. . . .. . .. . . .. . .. . . .. . .. . 28

6.3 Troubleshooting.... . . . .. . .. . . .. . .. . . .. . .. . . .. . .. . .29

7 Accessories.... . . .. . .. . . .. . .. . . .. . .. . . .. . .. . .. . . .. . .. . . .. . .. . 31

7.1 Internet Access Module (IAM) . . . .. . .. . . .. .. . . . 31

7.1.1 Setting up remote control of

the unit .... . . . .. . .. . .. . . .. . .. . . .. . .. . . .. . 31

7.2 Indoor air quality sensors . . . .. . . .. . .. . . .. . .. . . .. 33

7.3 Temperature control . .. . .. . . .. . .. . . .. . .. . . .. . .. . .34

7.3.1 Internal electrical

reheater..... . . .. . . .. . .. . . .. . .. . . .. . .. . . . 34

7.3.2 Electrical duct pre-

heater . . . . .. . . .. . .. . .. . . .. . .. . . .. . .. . . .. .35

7.3.3 Duct water heater .... . . . .. . .. . .. . . .. . 36

7.3.4 Duct water cooler.. . . . .. . .. . .. . . .. . .. . 38

7.3.5 Change-over coil for heating/

cooling function . .. . .. . .. . . .. . .. . . .. . .. 39

7.4 Airflow control.... . . .. . . .. . .. . . .. . .. . . .. . .. . .. . . .. . 41

7.4.1 VAV/CAV conversion kit. . . . .. . .. . . .. 41

7.5 Installation/Maintenance . .. . .. . . .. . .. . .. . . .. . .. 41

7.5.1 Outdoor/Exhaust air

dampers.... . . .. . . .. . .. . . .. . .. . . .. . .. . .. . 41

7.5.2 Pressure Guard . . . .. . .. . . .. .. . . .. . .. . . . 42

7.5.3 Multiple control panels ..... . . .. . . .. . 43

7.5.4 Presence detector . .. . .. . .. . . .. . .. . . .. 44

7.5.5 Push button . . .. . . .. . .. . . .. . .. . . .. . .. . . . 44

| 01_1.8.0

Page 4

Page 5

Overview

1 Overview

Read the installation instructions completely and carefully.

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 Type label

Before calling your service representative, make a note of the specification and production number from the type label, which can be found on the side of the units, next to the external connections.

Position Description

Product code (product specification)

Product item number

Production order number

Serial number

Production date (YY.MM.DD)

QR code for manufacturing order (MO) number and software version

QR code for the spare parts list and documentation

1.3 Disposal and recycling

This product is compliant to the WEEE directive. When disposing the unit, follow your local rules and regulations. This product packing materials are recyclable and can be reused. Do not dispose in household waste.

Fig. 1 Type label

2 Important Safety Information

• Observe and respect local conditions, regulations and laws.

• Safety elements may not be dismantled, circumvented or deactivated.

• Wear protective equipment during all work in the vicinity of the unit.

• Do not allow children to play with the device.

| 01_1.8.0

Page 6

| Important Safety Information

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.

• The system should operate continuously, and only be stopped for maintenance/service.

• Do not connect tumble dryers to the ventilation system.

• Make sure that filters are mounted before starting the unit.

2.2 Admonitions

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.

Warning

• This product must only be operated by a person who has suitable knowledge or training within this field or carried out with the supervision of a suitably qualified person.

• Beware of sharp edges during mounting and maintenance. Use protective gloves.

Warning

• Risk of injury due to rotating parts that have not come to a complete standstill after mains supply to the unit have been disconnected.

| 01_1.8.0

Page 7

Important Safety Information |

2.3 Declaration of Conformity

Manufacturer

Systemair UAB Linų st. 101 LT–20174 Ukmergė, LITHUANIA Office: +370 340 60165 Fax: +370 340 60166

www.systemair.com

hereby confirms that the following product:

Heat recovery ventilation unit: SAVE VTC 500

(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).

Comply with all applicable requirements in the following directives:

• Machinery Directive 2006/42/EC

• Low Voltage Directive 2014/35/EU

• EMC Directive 2014/30/EU

• Ecodesign Directive 2009/125/EC

• RoHS Directive 2011/65/EU

The following regulations are applied in applicable parts:

1253/2014

1254/2014

327/2011 Requirements for fans above 125 W

The following harmonized standards are applied in applicable parts:

EN ISO 12100:2010

EN 13857

EN 60 335-1

EN 60 335-2-40

EN 62233

EN 50 106:2007

EN 61000-6-2

EN 61000-6-3

Requirements for ventilation units

Energy labelling of residential ventilation units

Safety of machinery - General principles for design - Risk assessment and risk reduction

Safety of machinery – Safety distances to prevent hazard zones being reached by upper or lower limbs

Household and similar electrical appliances – Safety Part 1: General requirements

Safety of household and similar electrical appliances – Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers

Measurement methods for electromagnetic fields of household appliances and similar apparatus with regard to human exposure

Safety of household and similar appliances – Particular rules for routine tests referring to appliances under the scope of EN 60 335-1 and EN 60967

Electromagnetic compatibility (EMC) – Part 6-2: Generic standards – Immunity for industrial environments

Electromagnetic compatibility (EMC) – Part 6-3: Generic standards – Emission standards for residential, commercial and light-industrial environments

Skinnskatteberg, 30-08-2017

Mats Sándor

Technical Director

| 01_1.8.0

Page 8

| Technical data

3 Technical data

3.1 Power consumption and fuse size

Re-heater

Fans 340 W

Total power consumption

Fuse 13 A

1670 W

2010 W

4 Configuration

4.1 General

SAVE VTC 500 has a modern touchscreen LCD control panel, simply known as HMI — Human Machine Interface. The touchscreen display provides information about current state of the unit and allows you to control all system functions.

Settings are done by touching the icons or options. The touch screen is sensitive and it is not necessary to press too hard.

4.2 Startup wizard

During the first power up of the unit, you will be asked to set:

• menu language

• time and date

• import configuration file (if the Internet Access Module (IAM) with configuration file is available)

• airflow control type (Manual/RPM) and airflow level values

• heater type (None/Electrical/Water/Change-over)

The Startup Wizard cannot be skipped.

4.3 Common symbols

The following selection symbols are common and are present in most menu pages:

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

Some menus have more than one page. Touch page indicator in the top right corner to go to the next page. The first number indicates current page number and the second number indicates a total number of pages available.

Many options show up in a form of the pop-up window. Select the option from the displayed list in the pop-up window and press OK to confirm selection.

SET/OK

On and Off slider to activate or deactivate a function. White bubble — function is inactive, green bubble — function is active.

Buttons to confirm changes

| 01_1.8.0

Page 9

4.4 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.Configuration of all system parameters

H.Help and troubleshooting menu

Configuration |

4.5 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. List of active alarms

6. Icon list of active user functions

4.5.1 User modes

The first icon at the top of home screen shows currently active user mode. To change the user mode, touch the active user mode icon (pos. 2) and select a new user mode from the list. The unit has 2 permanent and 5 temporary user modes available for selection. Only one mode can be active at a time.

| 01_1.8.0

Page 10

| Configuration

Settings of all modes can be modified in Service menu.

4.5.1.1 Permanent modes

Permanent modes are always active unless interrupted by temporary modes, activated user functions or alarms:

Icon Text

AUTO

MANUAL

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. The unit can be set run at one out of four available airflow speeds: Off/Low/Normal/High.

Note:

The fan can be set to OFF by activating Manual Fan Stop function in Service menu.

Description

4.5.1.2 Temporary modes

Temporary modes are active only for a set period of time unless interrupted by active user modes, activated user functions or alarms:

Icon Text

HOLIDAY

CROWDED

AWAY

REFRESH

FIREPLACE

Sets speed of both supply and extract air fans to Low levels when user is away from home for a long period of time. ECO mode is active. Set duration 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. Default temperature setpoint offset is –3 K. Set duration in hours.

Sets speed of both supply and extract air fans to Low levels when user is away from home for a short period of time. ECO mode is active. Set duration in hours.

Sets speed of both supply and extract air fans to maximum High levels to replace indoor air with a fresh air in a short period of time. Set duration in minutes.

Sets speed of supply air fan to High level and extract air fan to Low level to increase air pressure within the apartment for better smoke extraction through the chimney. Set duration in minutes.

Description

Settings of all modes can be modified in Service menu.

Temporary modes and user functions are active only for a set period of time after which they are terminated and the unit changes back to a former AUTO or MANUAL mode, depending on which one was active before temporary mode or user function was activated.

Temporary modes can also be activated via digital input signal triggered by push button, presence detector, etc.

4.5.1.3 Digital input functions

Digital input functions always active while digital input is activated.

| 01_1.8.0

Page 11

Configuration |

Icon Text

Central

Vacuum

Cleaner

Cooker Hood

Configurable

Digital Input

Configurable

Digital Input

Configurable

Digital Input

Pressure

Guard

Function sets speed of supply air fan to High level and extract air fan to Low level to increase air pressure within the apartment for better dust collection through central vacuum cleaner. Function can be activated via digital input — Central Vacuum Cleaner Function.

Sets speed of both supply and extract air fans to Maximum level to increase airflow in the cooker hood. Function can be activated via digital input — Cooker Hood Function.

Configurable digital input for custom user function. Airflow levels for both fans are freely configurable. High–priority function.

Configurable digital input for custom user function. Airflow levels for both fans are freely configurable. Mid–priority function.

Configurable digital input for custom user function. Airflow levels for both fans are freely configurable. Low–priority function.

Configurable digital input for pressure switch connection. Airflow levels for both fans are freely configurable.

4.5.1.3.1Configurable digital inputs

Description

A custom airflow settings for supply and extract fans can be set and assigned to a digital input. Each fan can have a different airflow setting.

Configurable digital input can be activated via signal triggered by push button, presence detector or any other external device with digital output, such as Building Management Systems (BMS)

Configurable digital inputs are grouped in levels of priority, Configurable Digital Input 1 being the highest, meaning it can’t be overwritten by other user functions.

4.5.1.4 Digital input and Mode hierarchy

User modes and functions have a different hierarchy. User functions activated via HMI or mobile APP, such as AWAY, CROWDED, FIREPLACE, HOLIDAY and REFRESH, are interrupted by manual selection of AUTO and MANUAL fan modes.

A FIREPLACE function has the highest priority between user functions. Other functions activated via HMI/APP can interrupt each other.

If FIREPLACE function is hard-wired on the connection board and configured as digital input (DI) then it has a higher priority than AUTO and MANUAL mode. Digital input for a FIREPLACE function has also a higher priority than other hard-wired digital inputs (DI) for: AWAY, CENTRAL VACUUM CLEANER, COOKER HOOD, CROWDED, HOLIDAY or REFRESH.

| 01_1.8.0

Page 12

| Configuration

Fig. 2 Hierarchy of user modes and digital inputs

Modes are listed from the highest to lowest priority; A — user modes that can be activated from the control panel; B — user modes and functions activated via digital input

4.5.2 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 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. Default setting is Supply air temperature control.

Control mode of the temperature can be changed in Service menu.

4.5.2.1 ECO mode

ECO mode is a power saving function that can be activated in SET TEMPERATURE menu.

ECO mode function is available only when an internal heater is installed and configured.

While ECO mode is active, a temperature setpoint at which heater is activated is lowered to avoid activation of the heater during cold nighttime.

| 01_1.8.0

Page 13

Configuration |

If the temperature is very low and the heater is activated during the nighttime (even with lowered temperature setpoint), then during the upcoming daytime indoor temperature will be increased using the heat exchanger so that accumulated heat could be used during the next cold nighttime, the lowered setpoint for the heater remains.

ECO mode will have impact for the following user functions/modes if selected:

• AUTO mode

• MANUAL mode

• AWAY mode

• HOLIDAY mode

• CENTRAL VACUUM CLEANER function

• COOKER HOOD function

• FIREPLACE mode

ECO mode is always activated by the following modes:

• AWAY mode

• HOLIDAY mode

ECO mode is always deactivated by the following user functions/modes:

• CROWDED mode

• REFRESH mode

• FREE COOLING function

4.5.3 Airflow settings

Airflow settings are available only in MANUAL mode. Click on fan icon on the main screen to enter SET AIRFLOW menu.

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. The fan can be set to Off by activating Manual Fan Stop function in Service menu.

4.5.4 Indoor Air Quality

The unit automatically controls indoor humidity and/or CO2levels by adjusting airflow setting. Airflow is increased if air quality is decreasing.

Demand Control function is responsible for IAQ (Indoor Air Quality) regulation. Relative humidity (RH) and/or CO sors are responsible for IAQ monitoring.

Indoor air quality (IAQ) indicator is available if AUTO mode and Demand Control function is activated.

IAQ levels:

• ECONOMIC: Actual IAQ value is below low IAQ set point.

• GOOD: Actual IAQ value is between low and high IAQ limits.

• IMPROVING: Actual IAQ value is above high IAQ set point.

Different airflow settings can be set for IMPROVING and GOOD IAQ levels in Service menu.

sen-

Setpoint for relative humidity and CO

level can be set in Service menu.

4.5.5 Status line

Status line located at the bottom area of home screen displays information about:

| 01_1.8.0

Page 14

| Configuration

List of active alarms. See chapter 4.7.2.3 for more information.

Touching any of these lines will move you to the next page with more detailed list and information about each alarm or active user function.

List of active user functions. See chapter 4.6 for more information.

4.6 Description of User function icons

Icon Text

Heating

Heat recovery

Cooling

recovery

Connected heater or pre-heater is active and air heating is in process.

Heat recovery from apartment is active.

Connected cooler is active and air cooling is in process.

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.

Description

Free cooling

Moisture transfer

Defrosting

Secondary air

Vacuum

cleaner

Cooker Hood

User lock

Function decreases indoor air temperature by using only cool outdoor air during nighttime to save energy consumption.

Function controls the rotation speed of the heat exchanger to prevent moisture transfer to supply air due to high relative humidity in the extract air. Function is only available for units with Rotating type heat exchanger.

Function prevents formation of the ice on the heat exchanger during cold 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 while the extract air fan stops and warm secondary air increases the temperature inside the heat exchanger.

Sets speed of both supply and extract air fans to Maximum level to increase airflow in the cooker hood. Function can be activated via digital input — Cooker Hood Function.

Function indicates that the system is locked with a password and cannot be edited or settings changed in any way. System must be unlocked first to make changes.

Configurable

Digital Input

Configurable

Digital Input

Configurable digital input for custom user function. Airflow levels for both fans are freely configurable. High–priority function.

Configurable digital input for custom user function. Airflow levels for both fans are freely configurable. Mid–priority function.

| 01_1.8.0

Page 15

Configuration |

Configurable

Digital Input

Pressure

Guard

4.7 Main menu

User settings and advanced settings

Configurable digital input for custom user function. Airflow levels for both fans are freely configurable.

Low–priority function.

Configurable digital input for pressure guard connection. Airflow levels for both fans are freely configurable.

4.7.1 Unit Information

A basic read-only information about status of the unit, configured components and inputs/outputs.

4.7.1.1 Components

Type and settings of heat exchanger, heater, cooler, extra controller.

4.7.1.2 Sensors

Values from sensors and load of fans (rpm).

4.7.1.3 Input Status

Status of configured analog, digital and universal inputs. Connected component type and raw value (volts) is displayed.

4.7.1.4 Output Status

Status of configured analog, digital and universal outputs. Connected component type and value (volts) is displayed.

4.7.1.5 Unit Version

Unit model name, manufacturer number, serial number and unit software versions for Mainboard, HMI and IAM.

| 01_1.8.0

Page 16

| Configuration

4.7.2 Alarms

A detailed information about active system alarms and alarm log of last 20 events.

4.7.2.1 Active Alarms

Alarm screen is empty if there are no active or logged alarms.

Press HELP button on the active alarm to access FAQ and troubleshooting (if available). Press ACKNOWLEDGE on the individual alarm to clear it. Depending on alarm type and the cause, it might be necessary to do a troubleshooting first to acknowledge active alarm.

It may be not possible to clear the status of alarm if the cause of alarm is still present, as that would immediately trigger alarm to return.

4.7.2.2 Alarms log

Alarm log allows to view last 20 alarms.

Each alarm contains information:

• Alarm name

• Date/time stamp

• Information if the alarm stops the unit or other note

4.7.2.3 Alarm list

Alarm name Explanation Do the following

Frost protection

Frost protection temperature sensor

Defrosting error

Supply air fan rpm

Extract air fan rpm

Supply air fan control error

Frost protection of return water in heating coil.

• Alarm stops the unit and opens the water valve completely.

Indicates malfunction of water heater temperature sensor.

• Alarm stops the unit.

Indicates failure of pre-heater to preheat the incoming outdoor air (in case Extra controller is configured as Preheater).

• Alarm stops the unit.

Rotation speed of the supply air fan is lower than minimum required. Fan malfunction.

• Alarm stops the unit.

Rotation speed of the extract air fan is lower than minimum required. Fan malfunction.

• Alarm stops the unit.

Flow or pressure alarm for supply air. The pressure is bellow pressure limit.

• Alarm stops the unit.

The alarm will reset once the water temperature reaches 13°C. Check the water fluid temperature in heating coil. Check the circulation pump of water heater. Contact your installation company or place of purchase.

Check that frost protection temperature sensor is connected properly and cable is not damaged. Contact your installation company or place of purchase.

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.

Check quick connectors of the fan. Contact your installation company or place of purchase.

Check that air tube for pressure sensor is connected properly and cable is not damaged. Contact your installation company or place of purchase.

| 01_1.8.0

Page 17

Alarm name Explanation Do the following

Extract air fan control error

Fire alarm

Emergency thermostat

Bypass damper

Rotor guard

Secondary air damper

Outdoor air temperature sensor

Overheat temperature sensor

Flow or pressure alarm for extract air. The pressure is bellow pressure limit.

• Alarm stops the unit.

Fire alarm is active.

• Alarm stops the unit.

Indicates triggered overheat protection (in case of installed electric re-heater battery).

Indicates malfunction in bypass damper.

Indicates a rotor malfunction. No rotation guard signal for 180 seconds.

Secondary air defrosting failed. Outdoor air temperature sensor measures < 10°C in 2 sec after defrosting OR Outdoor air temperature sensor measures < 5°C in 5 min after defrosting

Indicates outdoor air temperature sensor malfunction.

Indicates overheat temperature sensor malfunction.

Check that air tube for pressure sensor is connected properly and cable is not damaged. Contact your installation company or place of purchase.

Once the external Fire alarm is disabled – alarm has to be acknowledged and unit restarted.

A triggered manual or automatic overheat protection (EMT) gives an alarm in the control panel. In case a manual overheat protection is triggered, reset it by pushing the reset button. If the automatic overheat protection is triggered, it will reset automatically once the temperature has dropped. If the problem continues contact your installation company or place of purchase.

Disconnect the main power supply for 10 seconds to reset control function. Power up the unit, an automatic bypass damper test will be performed. If the alarm occurs again after approximately 2 minutes – contact your installation company or place of purchase.

If the rotating heat exchanger has stopped. Check the rotor belt. 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 between the sensor and the magnet. Adjust the gap if necessary. If the alarm persists, the rotor sensor may be faulty. Contact your installation company or place of purchase.

Check if secondary air damper is in correct position. Check that damper is connected properly and cable is not damaged. Contact your installation company or place of purchase.

Check that sensor is connected properly and cable is not damaged. Contact your installation company or place of purchase.

Configuration |

| 01_1.8.0

Page 18

| Configuration

Alarm name Explanation Do the following

Supply air temperature sensor

Room air temperature sensor

Extract air temperature sensor

Extra controller temperature sensor

Efficiency temperature sensor

PDM RH

PDM RH Extract air temperature

Filter warning

Filter

Extra controller alarm

External stop

Manual fan stop active

Indicates supply air temperature sensor malfunction.

Indicates room air temperature sensor malfunction.

Indicates extract air temperature sensor malfunction.

Indicates extra controller temperature sensor malfunction.

Indicates efficiency temperature sensor malfunction.

Indicates internal relative humidity sensor malfunction. Active: measured humidity = 0% Returned: measured humidity > 5%

Indicates internal extract air temperature sensor malfunction. Active: measured temperature = 0°C Returned: measured temperature > 5°C

Notification about filter change. Filter have to be replaced in one

Time for filter change. Change the filter.

Error from external device. Check if external device is connected

Unit is stopped by external signal. Operation is stopped by digital signal

Operation stopped, fans are in manual mode and selected as OFF.

Check that sensor is connected properly and cable is not damaged. Contact your installation company or place of purchase.

month time. Please acquire new filters.

Change filter according to the instructions in the User Manual. Details about filter retailers can be found in Help menu.

properly and cable is not damaged. Reset overheat protection on electrical pre-heater. Contact your installation company or place of purchase.

from external remote device or signal from building management system.

Select another speed of fans (LOW / NORMAL / HIGH) or AUTO mode in HMI home screen.

| 01_1.8.0

Page 19

Alarm name Explanation Do the following

Overheat temperature

Low supply air temperature

CO₂

Output in manual mode

Temperature after reheater is too high. Active: (Overheat temperature sensor measures > 55°C) Returned: (Overheat temperature sensor measures < 50°C)

Supply air temperature is too low. Active: (Outdoor air temperature sensor measures < 0°C) AND (Supply air temperature sensor measures < 5°C) Returned: (Supply air temperature sensor measures > 10°C)

External CO

External relative humidity sensor malfunction.

One or more of analogue outputs are in manual mode.

sensor malfunction. Check that sensor is connected

Alarm is possible if supply airflow is too low when the reheater is switched on. Check the supply airflow. Check that intake grille is not blocked. Check that shut off damper for outdoor air is open in operation. Contact your installation company or place of purchase.

Check the heat exchanger and reheater or refer to Point 2 in “Troubleshooting” menu.

properly and cable is not damaged. In case sensor wireless – check RS485 gateway status and sensor status in HMI. Contact your installation company or place of purchase.

Check that sensor is connected properly and cable is not damaged. In case sensor wireless – check RS485 gateway status and sensor status in HMI. Contact your installation company or place of purchase.

Check Service menu for Output settings, and check all configured outputs to be in Auto mode. If any outputs in Manual - change back to Auto mode.

Configuration |

Alarm Fire Alarm can be only activated with a digital signal from a smoke/fire detection system or similar. Digital input has to be configured as Fire Alarm for this alarm to work.

Digital output configured as Sum Alarm sends a generic signal every time the alarm is triggered, except for alarms Ex- ternal stop, Output in manual mode and Manual Fan Stop. This signal does not specify the alarm type.

4.7.3 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.

4.7.3.1 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.

4.7.3.2 Edit schedule

Touch icon at the bottom left corner of the screen to add a new schedule or press EDIT button to modify already added schedule.

| 01_1.8.0

Page 20

| Configuration

To configure the schedule:

1. Set the time. Touch the START TIME or END TIME values to change time. Use arrow buttons or decrease value. Confirm with OK button.

and to increase

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.

2. Once time is set, click on the day(s) when schedule should be active. It is possible to set a separate schedule for each day.

Already scheduled days are not available for selection for new schedules.

3. Confirm schedule with OK button.

Fig. 3 Week schedule example

Scheduled days are highlighted (pos. 1). First time period (pos. 2) and the second time period (pos. 3) are shown on the right side of each schedule.

4.7.4 Filter

In this menu the remaining time until filter change is displayed. Editing is locked with a password, use administrator password. See Password Settings in Service menu for more information.

Set duration of the filter until next change for period of 3–15 months in steps of 1 month. Default setting is 12 months.

A filter change notification is shown one month prior to filter change.

If a new filter period is selected and confirmed or filter alarm is acknowledged, the timer resets and starts counting from the beginning.

Information what filter type is needed for change or where to order a new filter can be found in Help menu.

4.7.5 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.

| 01_1.8.0

Page 21

Configuration |

Switch between 12 and 24 hours time format.

• Contact information: contractor, installer, service, phone, website, e-mail, etc.

• Display settings: screen brightness and screen behavior in standby mode.

4.7.6 Service

All unit parameters and settings can be changed in the Service menu. The Service menu is locked by default and it is necessary to enter a password (default password is 1111).

4.7.6.1 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

Central Vacuum Cleaner

Cooker hood function

External Stop

Extra controller Alarm

Change-over feedback

Fire Alarm

Configurable Digital Input 1

Configurable Digital Input 2

Configurable Digital Input 3

Pressure Guard

Activation of specific user modes.

Activation of Central vacuum cleaner function.

Activation of Cooker Hood function.

Air handling unit is stopped by an external command.

Indication about an alarm in external controller. Used for Extra Heater/Cooler/ Preheater.

Used with Change-over systems. Indicate if the temperature of heating/cooling fluid in the system is right.

Air handling unit is stopped due to fire. Can be used with smoke alarms or similar.

Activation of custom airflows set by user.

Digital input from a pressure guard component

Relative humidity and rotation speed signals from fans are already pre-addressed to specific terminals and cannot be changed, all other inputs are free for configuration by commissioning. Inputs are free to be used for any purpose.

Universal input (UI) configured as universal analog input (UAI) can be configured for several inputs because multiple sensors of the same type can be used. Universal analog inputs (UAI) have only selections for RH Sensor (RH), CO₂ Sensor (CO₂), Supply Air Fan Control (SAFC) and Extract Air Fan Control (EAFC) wired configurations.

Analog input (AI) temperature sensors are not allowed to be configured more than once.

Same user modes can be configured on multiple digital inputs (for example multiple bathrooms can be connected to different digital inputs with Refresh mode configured for each.

Digital inputs can be configured to be normally open (Normally Open (NO)) or normally closed (Normally Closed (NC)). Default setting is Normally Open (NO). Not available for wireless inputs.

A time delay for user modes activated via digital input can be switched off or enabled. Time delay indicates how long the user mode remains active after its duration of operation has expired.

PDM (pulse density modulation) input for relative humidity (RH) sensor on the main board is pre-adressed and cannot be changed.

| 01_1.8.0

Page 22

| Configuration

Table 2 Overview of input configuration

Analog inputs Digital inputs Universal analog inputs Universal digital inputs

Input type Value Compensation

Input type Polarity Value

Input type Analog type Value

Input type Digital type Polarity Value

4.7.6.2 Output

Configuration of outputs.

Settings for analog, digital and universal output terminals on the main board and connection board, configuration of functionality.

Table 3 Digital outputs available for selection

Step controllers for Heating/Cooling/Extra controller

Sum Alarm

Outdoor-/Exhaust Air Damper

Secondary Air

Activate Cooling

Interlock External fan Control

Circulation pump Heating/Cooling/Extra controller

Heater/Cooler/Extra controller control signals.

Fault indicating output.

Outdoor-/Exhaust air damper control signal.

Secondary air damper control.

Cooling mode activation signal to an external system.

Automatic indication about prohibited external fan control (i.e. if defrosting is activated).

Start/Stop signal to the circulation pump of the Heating/Cooling/Extra controller.

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. Outputs are free to be used for any purpose.

Digital outputs are restricted by signal type and physical number of connections.

An output function is only allowed to be used once. Already used and configured terminal is greyed-out in the menu for output type selection.

Analog and digital outputs have a selection for Auto/Manual modes and an adjustable value for Manual mode.

Manual mode selection overwrites all system related automatic functions. Analog output adjustable manual value range is 0–10V and digital output values On/Off.

Table 4 Overview of output configuration

Analog outputs Digital outputs

Output type Auto/Manual Value

4.7.6.3 Components

Configuration of connected components.

Heat Exchanger

• Choose heat exchanger type.

Available types: Rotating / Plate

• Activate or deactivate passive house function if heat exchanger type Rotating is selected.

| 01_1.8.0

Page 23

Configuration |

Options: Yes / No.

• Choose bypass damper location if heat exchanger type Plate is selected. Default setting is based on unit type.

Supply / Extract

• Set actuator type. Default setting is based on unit type.

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. Default setting is 5 minutes. This option is available if Water / Change-over heater type is selected.

Range: Off / 1–60 min.

Cooler

• Choose cooler type. Each selection unlocks additional configuration options. Default setting is None.

Available types: None / Water / Change-over.

• 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 heater type is selected.

Range: Off / 1–60 min.

Extra controller

• Choose extra controller type. Each selection unlocks additional configuration options. Default setting is None.

Available types: None / Preheater / Heating / Cooling.

• Set temperature set point of the extra controller. Default value is 0°C.

Range: –30°C — 40°C.

• Set P-band. Default setting is 4°C.

Range: 1-60°C.

• Set I-time. Default setting is Off.

Range: Off / 1–240 sec.

• 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 0°C. This option is available if Preheater controller type is selected.

Range: 0–20°C.

• Set circulation pump stop delay. Default setting is 5 minutes.

Range: Off / 1–60 min.

4.7.6.4 Control Regulation

Configure how the system is controlled.

| 01_1.8.0

Page 24

| Configuration

Temperature Control

• Configure temperature controller. Choose control mode:

Available modes: Supply air temperature control / Room temperature control / Extract air temper-

ature 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. Default setting is 100 sec.

• Configure SATC Split for heater (0–20%), heat exchanger (25–60%) and cooler (65–100%) output settings. Range: 0–100%.

• Configure cascade control setpoint for min/max supply air temperature, P-band, I-time.

Only available for Room temperature control / Extract air temperature control modes.

ECO mode

• Configure ECO mode settings. Set heater offset. Default setting is 5°C.

Range: 0–10°C.

Fan Control

• Configure airflow and fan settings. Select fan control (airflow) type. Default setting is Manual (%).

Available types: Manual (%) / Manual rpm / Flow (CAV) / Pressure (VAV) / External

Setting

Airflow measurement unit.

P-Band

I-time

Airflow level settings for each level: MAXIMUM

LEVEL, HIGH LEVEL, NORMAL LEVEL, LOW LEVEL, MINIMUM LEVEL

Manual Fan Stop — turn on or off manual fan stop, this function enables manual fan stop from HMI. Default setting

is OFF.

Pressure Sensors —

configure sensor voltage relation to pressure. Set value at which fan alarm occurs. Default setting is None

Manual RPM Flow (CAV)

–

16-100% 500–5000 rpm

- -

rpm

0–3000 rpm 0–500 Pa

Off / 1–240 sec. Default setting: 5 sec.

l/s, m

Default setting: 150 Pa

Off / 1–240 sec. Default setting: 5 sec.

Sensor range (airflow unit)

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. Pressure at 10V: 0-2500 Pa, default setting 500 Pa

/h, cfm

Pressure

(VAV)

Pa %

–

0–100%

External

| 01_1.8.0

Page 25

Configuration |

Setting

Set K factor for supply air fan and extract air fan. Default settings are based on unit type.

Outdoor Compensation

Manual RPM Flow (CAV)

- - SAF K-Factor range: 0–1000

EAF K-Factor

range: 0–1000

A purpose of this function is to protect the unit from freezing by creating an unbalanced airflow at extreme winter temperatures or to limit supply of cold/hot outdoor air at extreme winter/ summer conditions with balanced ventilation. Function operates by lowering the speed of supply air fan (SAF) or both supply and extract air fans (SAF/EAFC) by value set in Stop Compensation Value setting (adjustable from 0% to 50%) if the outdoor air temperature (OAT) drops below adjustable value set in Start Compensation Temperature setting (during winter from 0 °C to -30 °C / during summer from 15 °C to 30 °C). This compensation reaches the maximum as soon as the outdoor air temperature reaches the adjustable value set in Stop Compensation Temperature setting (during winter from 0 °C to -30 °C / during summer from 15 °C to 30 °C)

Pressure

(VAV)

- -

External

Important

Changing the airflow type does not change P-band value automatically. P-band value have to be changed manually after changing the airflow type.

Demand Control

Configure indoor air quality sensors. Once sensor(s) are configured, Demand Control function is activated by choosing AUTO mode in home screen.

• Activate or deactivate CO

Set CO centration is 400 ppm. Range: 100–2000 ppm.

Set P-band, default setting is 200 ppm. Range: 50–2000 ppm.

Set I-Time, default setting is Off. Range: Off/1–120 sec.

• Activate or deactivate RH sensor. Default setting is Off.

Set humidity setpoint in summer, default setting is 60%. Range: 1–100%.

Set humidity setpoint in winter, default settting is 50%. Range: 1–100%.

Set P-band, default setting is 10%. Range: 1–100%.

Set I-time, default setting is Off, Range: Off/1–120 sec.

• Select airflow level for Improving Air Quality. Range: Normal / High / Maximum.

• Select airflow level for Good Air Quality. Range: Low / Normal.

sensor setpoint. Default setting is 800 ppm (parts per million in atmosphere). Normal atmospheric CO2con-

sensor. Default setting is Off.

Moisture Transfer Control

Note:

Setting is available if heat exchanger type is set as Rotating. It is highly recommended to leave default values for P-band and I-time. They should be changed only by installer and trained staff.

• Activate or deactivate relative humidity transfer functionality. Default setting is On.

• If Moisture Transfer Control is activated, configure:

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.

| 01_1.8.0

Page 26

| Configuration

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.

Soft

Normal Apartments or houses with normal humidity

Hard

In newly constructed houses it might be necessary with a higher defrost level during the first winter period.

Dry areas, such as warehouse buildings with few people or industrial buildings that don’t use water in their production process.

Buildings with very high humidity level.

• Set by-pass location. Default setting is based on unit configuration.

Supply / Extract.

• Set if secondary air is allowed. Default setting is Off.

Off / On.

Cooling Control

• If the outdoor air is warmer than the extract air and the supply air is above the setpoint, cooling recovery occurs. This condition blocks the heat regulation process. Activate or deactivate cooling recovery. Default setting is On.

Set cooling limit. Cooling recovery is allowed if extract air temperature is lower than outdoor air temperature by a set limit (default setting is 2K) and cooling demand is present.

• Configure status, temperature and duration of free cooling. Activate or deactivate free cooling . Default setting is Off.

Set supply and extract air fan levels during free cooling. Default setting is Normal. Range: Normal / High / Maximum.

Set start condition. Outdoor daytime temperature for activation, default setting is 22°C. Range: 12–30°C.

Stat stop conditions. Extract/Room temperature, default setting is 18°C. Outdoor high temperature limit, default setting is 23°C. Outdoor low temperature limit is 12°C. Start and stop time.

4.7.6.4.1Finding RPM for desired airflow

It is necessary to set fan RPM (revolutions per minute) for each airflow level to control airflow by changing fan speed. 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.

2. Go to Diagram tab and type in desired airflow values in l/s, m

sure drop in duct system (if this value is not know, type in 100 Pa for both supply and extract air)

Fig. 4 Example of airflow and external pressure selection

3. See calculated speed values in revolutions per minute (rpm) for both supply and extract air in the table bellow

diagrams.

Fig. 5 Example speed for supply and extract air

/h, m3/s or cfm for supply and extract air. Input pres-

4. Use this procedure to find fan speed for all airflow levels: MINIMUM LEVEL, LOW LEVEL, NORMAL LEVEL, HIGH LEV-

EL, 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.

| 01_1.8.0

Page 27

Configuration |

4.7.6.5 User Modes

Set airflow level, duration and offset for each user mode.

Set supply and extract air fan levels, default duration and temperature offset where available for user modes:

• Away

• Central Vacuum Cleaner

• Cooker Hood

• Crowded

• Fireplace

• Holiday

• Refresh

• Configurable Digital Input 1

• Configurable Digital Input 2

• Configurable Digital Input 3

• Pressure Guard

4.7.6.6 Communication

Configure Modbus and wireless settings

Modbus

• Set Modbus address. Default setting is 1.

• Set baud rate. Default setting is 115200.

• Set parity. Default setting is None. Range: None / Even / Odd.

• Set stop bits. Fixed value: 1.

• Shows Smartly-Gateway state.

HMI Address

• When more than one control panel is connected to the unit, it is important that each control panel would have a different address number. This menu displays current HMI address.

For more information see 7.5.3 Multiple control panels, page 43.

WLAN Settings

WLAN settings are for connection of the Internet access module (IAM) accessory.

Internet access module (IAM) is a device that allows to connect to the unit and control it via a mobile application or directly from the computer.

• Shows current connection status.

• Shows network name to which the internet access module is connected.

• Scan for networks — use this search function to find your local protected network. Detailed procedure is described bellow.

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. After search is complete, find the network name to which IAM should connect and select it. Wi-Fi network should

be password protected, otherwise IAM can't connect to Wi-Fi network.

5. After required Wi-Fi name selection, password pop-up window appears in control panel screen. Insert your Wi-Fi

network password.

| 01_1.8.0

Page 28

| Configuration

6. If password is correct and connection to Wi-Fi network is successful, IAM will establish connection to server automatically. The LED of IAM will start blinking slowly in green colour.

• Reset WLAN settings when needed.

4.7.6.7 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%

Level 4: 45–59%

Level 5: 60–100%

Parameters

• Select parameter type, position in y-axis, period from 60 minutes to 2 weeks and then create a graph based on

stored data by touching icon in the top right corner available in mobile application)

. Export parameters data by touching arrow button . (only

4.7.6.8 Unit backups

Menu for restoring factory settings or importing/exporting configuration file from/to the Internet Access module (IAM).

• Touch Factory settings menu to restore factory configuration and parameters. This will also overwrite changed password. You will be asked to confirm the task before proceeding.

Note:

This selection will automatically restart the unit. The Startup Wizard have to be re-done after restart.

• Touch Save current configuration to IAM option to save your current system configuration file to the connected Internet Access Module.

• Touch Download current configuration from IAM to download configuration file from the connected Internet Access Module.

• Touch Set User Safe Configuration option to store current settings in the unit memory as a backup. It can later be used as a fail-safe configuration copy in addition to factory settings.

• Touch Activate User Safe Configuration option to restore the backup copy of system settings from the unit memory.

4.7.6.9 Password Settings

Service level is always locked with a password. Other menu levels have a separate option for locking. If password requirement is activated for different menu levels, these are unlocked with the administrator password.

Choose what menus should be locked or not.

4.7.7 Help

FAQ, troubleshooting of alarms, contact information for support is provided in this menu.

• Service partner — information about service partner.

• Company

• Telephone

• Homepage

| 01_1.8.0

Page 29

• 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.

5 Electrical connections

The SAVE VTC 500 is wired internally at factory.

The electrical connection box can be found behind a cover plate (pos. 1). The main circuit board (pos. 2) can easily be taken out from the unit.

Fig. 6 Print card position

Electrical connections |

5.1 Main board layout

The SAVE VTC 500 is equipped with built-in regulation and internal wiring.

The figure shows the main circuit board. See wiring diagram for more information.

| 01_1.8.0

Fig. 7 Main circuit board connections

Page 30

| Electrical 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 — Outdoor air sensor

Analog input 2 — Supply air sensor

Analog input 3 — Freely configurable

Analog input 4 — Freely configurable / Overheat temperature sensor (units with heater)

Analog input 5 — Freely configurable

Digital input 1 — Rotor guard sensor (VSR, VTR units)/ Damper signal (VTC units)

Digital input 2 — Freely configurable / Cooker hood (VTR 150/K unit)

Analog output 2 — Freely configurable / Electrical heater controller (VTC 700 unit)

Analog output 1 — Rotor of the heat exchanger (VSR, VTR units) / Damper control (VTC units)

Terminals for speed control of extract air fan

Terminals for speed control of supply air fan

Terminals for bypass damper control (VTC units)

5.2 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

AI6–7

DO1–4

AO3–5

UI1

Connection to the main circuit board

Connection for external control panel (HMI) or Internet access module (IAM)

Modbus RS485 connection

Freely configurable Analog input. None/Input type selection in HMI.

Freely configurable Digital output. None/Output type selection in HMI.

Freely configurable Analog output. None/Output type selection in HMI. Actuator type 0–10V, 10– 0V, 2–10V, 10–2V.

Digital input configured for pressure guard.

| 01_1.8.0

Page 31

Position Description

UI2

UI3–5

24V Maximum current 200mA at 24VDC +-10%.

Digital input configured for cooker hood.

Freely configurable Universal input. Can be configured to act as Analogue input (0–10V) or as Digital input (24V). None/Input type selection in HMI (NC or NO polarity).

6 Service

6.1 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.

Warning

• This product must only be operated by a person who has suitable knowledge or training within this field or carried out with the supervision of a suitably qualified person.

• Beware of sharp edges during mounting and maintenance. Use protective gloves.

Service

Warning

• All though the mains supply to the unit has been disconnected there is still risk for injury due to rotating parts that have not come to a complete standstill.

Important

• The installation of the unit and complete ventilation system must be performed by an authorized installer and in accordance with local rules and regulations.

• The system should operate continuously, and only be stopped for maintenance/service.

• Do not connect tumble dryers to the ventilation system.

• Duct connections/duct ends must be covered during storage and installation.

• Make sure that filters are mounted before starting the unit.

| 01_1.8.0

Page 32

Service

6.2 Internal Components

Fig. 9 Components

Position Description

2 Fan, extract air

The damper may not be turned by hand!

Fan, supply air

Filter, outdoor air

Filter, extract air

Defrost damper

Motor, defrost damper

Heat exchanger

Condensation tray

Condensation drain

Print card with terminals

Temperature sensor, supply air

Temperature sensor, outdoor air

Relative humidity/Extract air temperature sensor

Fast couplings for supply air fan

Fast couplings for extract air fan

6.2.1 Description of Components

6.2.1.1 Fans

Fans have an external EC type rotor which can be steplessly controlled individually 16–100%. The motor bearings are life time lubricated and maintenance free. It is possible to remove the fans for cleaning, see “User Manual” for more information.

| 01_1.8.0

Page 33

Service

6.2.1.2 Filters

The factory installed filters are of filter quality F7/ePM1 60% for the supply air and M5/ePM10 50% for the extract air filter. The filters need to be replaced when polluted. New sets of filters can be acquired from your installer or wholesaler.

Filter quality F8/ePM1 70% can be installed for supply air filtering. The filter type is labelled on the top of the filter

6.2.1.3 Defrost damper

The built in bypass damper (pos. 5 figure 9) 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.

A test sequence which opens and closes the damper will occur if there is heating demand and after every power up of the unit. An actuator drive detects if the bypass is able to close completely. If a signal is not detected within two minutes after the function test has been initiated, then the warning Bypass Damper appears in the HMI.

6.2.1.4 Heat exchanger

SAVE VTC 500 is equipped with a highly efficient, counter flow plate heat exchanger. Required supply air temperature is therefore normally maintained without adding additional heat.

The heat exchanger is removable for cleaning and maintenance, see “User Manual” for more information.

6.2.1.5 Main circuit board

The main circuit board controls all functions and the unit.

It is possible to connect external accessories to a free terminals on the main circuit board.

6.2.1.6 Temperature sensors

Three temperature sensors (NTC, 10 kΩ) are included in the unit from factory:

• Supply air sensor (pos. 14 figure 9)

• Outdoor air sensor (pos. 15 figure 9)

• Extract air sensor (pos. 16 figure 9).

The sensors are wired to the main print card. See wiring diagram for more information.

6.2.1.7 Humidity sensor

Relative humidity sensor (RHS/EAT) is included in the unit at factory and positioned in the extract air chamber.

The sensor also measures the temperature of extracted air.

The sensor is connected to the main circuit board. See wiring diagram for more information.

6.3 Troubleshooting

If problems should occur, please check the items below before calling your service representative.

| 01_1.8.0

Page 34

Service

Malfunction

Fans do not start

Reduced airflow

Action

1. Check the HMI for alarms.

2. Check that all fuses and fast couplings are connected (main power supply and fast couplings for supply and extract air fans).

3. Check that the week schedule is ON and running in AUTO mode. The week schedule might be in OFF mode with the air flow set to OFF (chapter 4.7.3).

1. Check the HMI for alarms. Some alarms can reduce the airflow to LOW if active.

2. The unit could be in defrost mode. This reduces the fan speed and in some cases shuts down the supply air fan completely during the defrosting cycle. The fans go back to normal after finished defrosting. There should be a defrosting function icon visible in the APP or HMI home screen if defrosting is active.

3. If the outdoor air temperature is below 0°C (Outdoor air temperature sensor (OAT) measures < 0°C) outdoor airflow compensation function can be active (if enabled). Fan speed (Supply or Supply/Extract air fans) is linearly reduced for decreasing outdoor air temperature.

4. Check if temporary user mode that reduces airflow is not activated, for example AWAY, HOLIDAY, etc. Also check digital inputs CENTRAL VACUUM CLEANER and COOKER HOOD.

5. Check setting of airflow in the HMI.

6. Check week schedule settings (chapter 4.7.3).

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.

The unit cannot be controlled (control

functions are stuck)

Low supply air

temperature

Noise/vibrations

1. Reset control functions by pulling out the plug for 10 seconds.

2. Check the modular contact connection between the HMI and the main printed circuit board.

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).

5. Check if user modes HOLIDAY, AWAY or CROWDED are activated in the HMI or via a hardwired switch.

6. Check the analogue inputs in the service menu to verify that the temperature sensors are functioning correctly.

7. In case of installed electrical/other re-heater battery: Check if the overheat protection thermostat is still active. If necessary, reset by pressing the red button on the front plate of the electrical re-heater.

8. Check if the extract filter must be changed.

9. Check if the unit has a re-heater battery connected. At very cold outdoor conditions an electrical or water heating battery might be necessary. A re-heater battery can be acquired as an accessory.

1. Clean fan impellers.

2. Check that the screws holding the fans are tightened.

3. Check that the anti vibration lists are fitted to the mounting bracket and to the back of the unit.

4. Check that the rotor belt is not slipping if the unit has rotating heat exchanger.

| 01_1.8.0

Page 35

Accessories

7 Accessories

SAVE VTC 500 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.

7.1 Internet Access Module (IAM)

Internet access module is a device that allows to connect to the unit and control it via a mobile application or directly from the computer and receive automatic updates.

The Cloud is a mediator between the user and the unit. To access your unit via Cloud, it has to be connected to the internet via Internet Access Module.

Component/product — Article number:

• Internet Access Module (IAM) – 211243

SAVE T ouch Cloud

7.1.1 Setting up remote control of the unit

| 01_1.8.0

Page 36

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.

• C2 — Plug one end of the Ethernet cable to the RJ45 socket on IAM and the other end to any free Ethernet socket on your router. The connection will be established automatically.

• C3 — Set up connection to your Wi-Fi through Communication menu in control panel.

D.Access Systemair mobile application. Two options are available:

• D1 — Download and install Systemair mobile application on your device. Systemair mobile application is available for both Android and iOS mobile operating systems.

• D2 — Systemair web application does not require installation and can be accessed directly through the website (homesolutions.systemair.com ) by using any web browser.

E. Launch the application. In the login screen enter your unique UNIT ID which can be found on the back label of IAM or

on additional label.

Press LOG IN button.

It is required to create a unique password when connecting to IAM for the first time. Touch Change password button. In the next menu screen enter your new password, confirm it and touch SET PASSWORD button. To finalize password creation, click the button on the IAM. Wait for a message to pop up in your app telling that password was changed.

Touch BACK button to return to the previous login screen. Enter the newly created password and touch LOG IN button.

For more information read the manual that comes with the accessory.

| 01_1.8.0

Page 37

Table 5 LED indicator codes

WLAN

Connected Disconnected Connected

— — —

Ethernet Cloud

— — —

Not Connected Blinks fast Disconnected Blinks slow

Connected Connected Not Connected Disconnected Disconnected Connected Connected

RED LED GREEN LED

— — — —

Fast blinking — every 500 milliseconds. Slow blinking — every 2 seconds.

7.2 Indoor air quality sensors

Indoor air quality sensors (IAQ) are CO2, relative humidity and temperature transmitters that must be installed either in extract air duct or the room depending on the type of transmitter.

• IAQ — indoor air quality sensor (CO2, RH and temperature)

• CO2 — CO

• 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

duct sensor

Accessories

— —

Blinks slow Blinks fast Blinks fast Blinks slow

Installation and connection

1. Install IAQ sensor in the duct or the room depending on

the transmitter type.

2. Connect CO

sensor to any free universal analog input

(UI) on the connection board.

3. If IAQ sensor contains relative humidity transmitter:

Connect it to any free universal analog input (UI) on the connection board.

4. If IAQ sensor contains room temperature transmitter:

Connect it to any free analog input (AI) on the connection board (only AI6 and AI7 are available on the con-

Fig. 10 IAQ connections

nection board).

Configuration

1. Go to Service menu.

2. Enter password (default 1111).

3. Configure of CO

and/or relative humidity sensor: Go to Input menu. Select UNIVERSAL tab. Select the universal in-

put to which the sensor is connected. Example if it is connected to UI4 on the connection board, then select UNIVER- SAL INPUT 4. Select signal type as Analog input and select sensor type from the input type list: RH sensor (RH) and/or CO₂ Sensor (CO₂).

| 01_1.8.0

Page 38

Accessories

4. Configure room temperature sensor: Go to Input menu. Select ANALOG tab. Select the analog input to which the sensor is connected. Example if it is connected to AI6 on the connection board, then select ANALOG INPUT 6. Select input type as Room Air Temperature Sensor (RAT).

7.3 Temperature control

7.3.1 Internal electrical reheater

Electrical reheater is used for supply air heating during cold outside temperatures. Electrical reheater should be installed inside of the unit.

• ELH — Electrical heater

• OHT — overheat protection sensor

• 1 — Outdoor air

• 2 — Supply air

• 3 — Extract air

• 4 — Exhaust air

Component/product — Article number:

• ELH VTC 500 R — 158105

• ELH VTC 500 L — 158109

Installation and connection

1 Remove the cover of reheater by loosening screws at the front (pos. 1).

2 Remove knobs (pos. 2) that will hold reheater in

place. Insert electrical reheater (pos. 1) into dedicated compartment, secure reheater with previously removed knobs (pos. 2).

| 01_1.8.0

Page 39

3 Lead reheater control, TRIAC and overheat protection

sensor wires through separate holes in the panel (pos.

3) to electrical connections compartment.

• Connect reheater control wires to the terminal

block marked as HEATER (pos. 4) on the main circuit board. Connect blue wire to N socket, brown wire to L socket.

• Connect TRIAC wires to the terminal block marked

as TRIAC (pos. 5) on the main circuit board. Connect black wire to G socket, brown wire to A1 socket, gray wire to A2 socket.

• Connect overheat protection sensor to any free

analog input on the main circuit board (pos. 6). Connect black wire to ground (GND), red fire to analog input.

5 Place back covers of reheater and the main circuit

board and secure them with screws.

Accessories

Note:

For more detailed information see a wiring diagram delivered with the unit.

Configuration

1. Go to Service menu

2. Enter password (default 1111)

3. Go to Components menu, select Heater menu and select type as Electrical. Do advanced settings if necessary.

4. Configure overheat protection sensor. Go back to Input menu. Select ANALOG tab. Select the analog input to which the overheat protection sensor is connected. Example if it is connected to AI4 on the main circuit board, then select ANALOG INPUT 4 and select Overheat Temperature Sensor (OHT) from the input type list.

5. Configure TRIAC. Go to Output menu. Select ANALOG tab then select TRIAC OUTPUT and set output type as Y1 Heating.

7.3.2 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 prevent icing in the heat exchanger.

| 01_1.8.0

Page 40

Accessories

• PH — electrical pre-heater

• ECT — extra controller temperature sensor

• OAT — outdoor air duct temperature sensor

• RL — relay

• 1 — Outdoor air

• 2 — Supply air

• 3 — Extract air

• 4 — Exhaust air

Component/product — Article number:

• CB 200-2,1 230V/1 Duct heater — 5384

• CB Preheater Connection Kit — 142852

Installation and connection

1. Install electrical pre-heater (ELH) at least 100 mm distance from the unit in the outdoor air duct. Relay (RL) is used to control the pre-heater. Connect the relay to any free digital output on the connection board (CB).

2. Connect pre-heater (ELH) 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. Install a duct temperature sensor (OAT) before the electrical pre-heater on the outdoor side of the unit and connect it to any free Analog Input on the connection board (CB).

Fig. 11 Pre-heater connections

Configuration

1. Go to Service menu

2. Enter password (default 1111)

3. Go to Components menu, select Extra Controller menu and set Extra Controller Mode setting as Pre- heater. Pre-heater setpoint can be set in the same menu. Do other advanced settings if necessary. Read “Installation and Service” manual for more information.

4. Configure connection of the pre-heater. Go to Service menu. Select Output menu. In next menu select DIGITAL tab. Select the digital output to which the pre-heater is connected. Example if it is connected to DO3 on the connection board, then select DIGITAL OUTPUT 3 and select Step Controller Y4 Extra Controller from the output type list.

5. Configure internal outdoor temperature sensor as extra controller temperature sensor. Go to Service menu. Select

Input menu. Select ANALOG tab. Select the ANALOG INPUT 1 and change its configuration from Outdoor Air Temperature Sensor (OAT) sensor to Extra Controller Temperature Sensor (ECT).

6. After sensor configuration is changed select the Analog Input to which the newly installed duct temperature sensor (OAT) is connected and configure it as Outdoor Air Temperature Sensor (OAT).

7.3.3 Duct water heater

A duct water heating battery is supposed to be installed in supply air duct.

| 01_1.8.0

Page 41

• WH — water heating battery

• FPT — frost protection sensor

• SAT — supply air temperature sensor

• S — actuator for valve

• 1 — Outdoor air

• 2 — Supply air

• 3 — Extract air

• 4 — Exhaust air

Component/product — Article number:

• VBC 200-2 Water heating battery— 5459

VBC 200-3 Water heating battery — 9841

• VAZ4 24A Actuator 0-10V (S) — 9862

• ZTV 15-0,6 2-way valve — 6571

ZTV 15-1,0 2-way valve — 9823

ZTR 15-0,6 valve 3-way — 6573

ZTR 15-1,0 valve 3-way — 9672

• 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.

Accessories

Important

Do NOT use 24V DC power output from the connection board for valve actuator.

2. Connect actuator (S) to any free analog output.

3. The frost protection sensor (FPT) should be strapped on a surface on the return water pipe. Connect FPT sensor to any free analog input.

4. An internal supply air temperature sensor (SAT, default connection AI2 on the main circuit board) must be replaced by a duct temperature sensor which can be acquired as an accessory. A duct temperature sensor must be installed in the duct after water heater. Connect the duct temperature sensor to analog input 2 (AI2) replacing the internal supply air temperature sensor.

Fig. 12 Water heater connections

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 Heater menu and select type as Water. Choose actuator voltage type. Do advanced settings if necessary.

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. Example if it is connected to AI6 on the connection board, then select ANA- LOG INPUT 6 and select Frost Protection Temperature Sensor (FPT) from the input type list.

6. Since a duct temperature sensor replaces internal supply air temperature sensor, it doesn’t need to be re-configured.

| 01_1.8.0

Page 42

Accessories

Note:

7. Water heater and its components are now configured.

7.3.4 Duct water cooler

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

• 1 — Outdoor air

• 2 — Supply air

• 3 — Extract air

• 4 — Exhaust air

Component/product — Article number:

• CWK 200-3-2,5 Duct cooler,circ — 30023

• RVAZ4 24A Actuator 0-10V (S) — 9862

• ZTV 15-0,6 2-way valve — 6571

ZTV 15-1,0 2-way valve — 9823

ZTR 15-0,6 valve 3-way — 6573

ZTR 15-1,0 valve 3-way — 9672

• Duct sensor -30-70C (SAT) — 211524

Installation and connection

1. Install a duct water cooler 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. Connect actuator (S) to any free analog output.

3. An internal supply air temperature sensor (SAT, default connection AI2 on the main circuit board) must be replaced by a duct temperature sensor which can be acquired as an accessory. A duct temperature sensor must be installed in the duct after water cooler. Connect the duct temperature sensor to analog input 2 (AI2) replacing the internal supply air temperature sensor.

Fig. 13 Duct cooler connections

Note:

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.

| 01_1.8.0

Page 43

Accessories

5. Since a duct temperature sensor replaces internal supply air temperature sensor, it doesn’t need to be re-configured.

Note:

6. Duct cooler and its components are now configured.

7.3.5 Change-over coil for heating/cooling function

Change-over coil can be used for both heating and cooling based on the demand.

Important

The change-over (heating/cooling) system can be implemented in many different ways and may vary in each household. This description explains the most common solution for connecting and controlling heating and cooling with a water coil and a heat pump. Please always check with your local “Systemair” consultant if your different solution for change-over function is supported by SAVE units.

• 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

• Relay 24V with socket — 159484

Installation and connection

1. Install change–over coil in the duct. Install a water pump if necessary. The turning on and off of water pump should be controlled with a relay (RL). Connect the relay to any free digital output and 24 V on the connection board. Then connect the power supply and a water pump (CWP) to the relay.

2. Connect a control signal wire (if available) of the heat pump (HP) to any free digital output and 24 V on the connection board.

3. Connect cooling and heating start signal wires to any free digital outputs on the connection box. Relays (RL) must be used.

4. The frost protection sensor (FPT) should be strapped on a surface on the return water pipe. Connect the frost protection sensor (FPT) sensor to any free analog input.

5. An internal supply air temperature sensor (SAT, default connection AI2 on the main circuit board) must be replaced by a duct temperature sensor which can be acquired as an accessory. A duct temperature sensor must be installed in the duct after heater/cooler. Connect the duct temperature sensor to analog input 2 (AI2) replacing the internal supply air temperature sensor.

| 01_1.8.0

Page 44

Accessories

Note:

6. A thermostat can be used to send signals (change-over feedback) regarding which actual medium (hot or cold) is currently in a pipe. This signal can be also sent directly from the heat pump if such function is available. If heating is demanded but only cold water/refrigerant is available - heating is deactivated).

Connect a change-over feedback wire (THS) to any free digital input and 24 V on the connection board.

Fig. 14 Change-over heating/cooling connections

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. Select Output menu. In next menu select ANALOG tab. Select the analog output to which the control signal wire is connected. Example if it is connected to AO3 on the connection board, then select ANALOG OUTPUT 3 and select Y1 / Y3 Change-over from the output type list.

5. Configure heating start signal. Go to Output. Select DIGITAL tab. Select the digital output to which the heating start signal wire from the heat pump is connected. Example if it is connected to DO1 on the connection board, then select DIGITAL OUTPUT 1 and select Step Controller Y1 Heating from the output type list.

6. Configure cooling start signal. Go to Output. Select DIGITAL tab. Select the digital output to which the cooling start signal wire from the heat pump is connected. Example if it is connected to DO2 on the connection board, then select DIGITAL OUTPUT 2 and select Step Controller Y3 Cooling from the output type list.

7. 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. Example if it is connected to AI6 on the connection board, then select ANA- LOG INPUT 6 and select Frost Protection Temperature Sensor (FPT) from the input type list.

8. Configure temperature feedback signal from the pipe or heat pump. Go to Input menu. Select UNIVERSAL tab. Select the universal input to which the feedback wire is connected. Example if it is connected to UI1 on the connection board, then select UNIVERSAL INPUT 1. Set signal type as Digital input and select an option Change-over feedback from the input type list.

9. Since a duct temperature sensor replaces internal supply air temperature sensor, it doesn’t need to be re-configured.

Note:

10.Configure relay for water pump control. Go to Output. Select DIGITAL tab. Select the digital output to which the relay is connected. Example if it is connected to DO3 on the connection board, then select DIGITAL OUTPUT 3 and select Start/Stop Circulation Pump, Y1/Y3 Change-over from the output type list.

| 01_1.8.0

Page 45

7.4 Airflow control

7.4.1 VAV/CAV conversion kit

The VAV/CAV conversion kit is used for VAV/CAV control of residential units.

Note:

The accessory package contains all needed parts for VAV conversion, however for use with CAV, an IRIS damper or a similar device with known K factor has to be purchased.

Component/product — Article number:

• VAV/CAV conversion kit — 140777

• SPI-200 C Iris damper — 6754

Installation and connection

• Follow instructions in the manual which is delivered with the accessory.

7.5 Installation/Maintenance

7.5.1 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.

Accessories

• RL — relay box

• U- outdoor air damper

• V — exhaust air damper

• 1 — Outdoor air

• 2 — Supply air

• 3 — Extract air

• 4 — Exhaust air

Component/product — Article number:

• EFD 200 Damper + TF230 motor (U/V) — 7162

• TUNE-R-200-3-M4 (U/V) — 311970

• Relay kit:

RMK — 153549

• Relay kit with a transformer for 24 VAC dampers:

RMK–T — 153548

For all possible connection variations please see wiring diagram delivered with the relay mounting kit.

| 01_1.8.0

Page 46

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. Connect power supply wires (N) from dampers to the terminal block. Connect control signal wires (Y, line) from dampers to relay socket terminals (11, 21). See illustration.

When damper with a non-spring return actuator is used, an addition power line (L) has to be connected to the terminal block since such damper requires constant power supply.

4. Connect power supply wires (L, N) coming out from the relay box to 230 V~ power source.

Fig. 15 Damper connection

Configuration

1. Go to Service menu

2. Enter password (default 1111)

3. Configure control signal to the relay. Go to Output menu. Select DIGITAL tab. Select the digital output to which the relay is connected. Example if it is connected to DO3 on the connection board, then select DIGITAL OUTPUT 3 and select signal type as Outdoor-/Exhaust Air Damper from the output type list.

7.5.2 Pressure Guard

A differential pressure switch is used to detect air pressure difference in a duct. The contact in the switch changes (on/ off) when air pressure exceeds the setpoint value.

One of the possibilities is to use this device with a cooker hood which has an internal fan. Turned on cooker hood causes air pressure to increase in the exhaust air duct. After exceeding a set air pressure value in the pressure switch, wires from the ventilation unit get connected by contact and signal is sent to the ventilation unit to activate the Pressure Guard function.

| 01_1.8.0

Page 47

1 Mount a differential pressure switch.

Set the pressure switch to the lowest possible pressure.

1. A differential pressure switch

2. Metal tube

3. Exhaust air direction

4. Exhaust air duct

2 Install a rubber bush in the duct. Insert the S-shaped

copper pipe into the rubber bushing so that it points towards the air flow (i.e. towards the outlet opening for the fan).

3 Connect plastic tube to P1 positive pressure connec-

tion (P2 negative pressure connection shall be left open), the other end of plastic tube should be connected to the copper pipe installed in the duct.

4 Connect wires from the connection box (UI, 24V) to

the pressure switch (common, normally open). Please contact your installer to find air pressure for your system. It may necessary to perform several tests and calibrations to find pressure, increased by the cooker hood, at which the differential pressure switch gets activated.

Accessories

COM

24 V

Note:

Connection with a minus sign (P2) on the pressure switch must be open, remove a plastic cap if it is present. The exhaust air pressure and air pressure increase caused by the cooker hood is different for each ventilation system. Set the switch activation pressure value using the knob under the lid. The setpoint value is visible through the lid.

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 differential pressure switch is connected.

Example if it is connected to UI1 on the connection board, then select option UNIVERSAL INPUT 1. Set signal type as Digital Input and select an option Pressure Guard from the input type list.

7.5.3 Multiple control panels

Multiple control panels (up to 10) can be connected to one unit with the help of diverting plugs. A single diverting plug allows to connect two control panels. A diverting plug can be connected to another diverting plug to further increase the number of control panels that can be connected simultaneously.

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.

Control panel is available in black or white colour.

| 01_1.8.0

Page 48

Accessories

• DP — diverting plug

• HMI — control panel

Component/product — Article number:

• CE/CD-diverting plug 4pin — 37367

• CEC Cable w/plug 12m — 24782

• CEC Cable w/plug 6m — 24783

• HMI White — 138077

• HMI Black — 138078

Installation and connection

1. Connect diverting plug to the connection box socket dedicated for external control panel (HMI) or Internet access module (IAM).

2. Plug in control panels to diverting plug(s) using recommended cables or any cable with RJ22 type plugs.

Note:

The maximum supported cable length is 50 meters.

Configuration

1. Go to Service menu

2. Enter password (default 1111)

3. Go to Communication ⇒ HMI Address and change the address number. Repeat these steps for each connected control panel.

Each control panel must have it’s own unique address number. No control panel should have the same address value to function properly.

7.5.4 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.

If, for example, it is connected to UI3 on the connection board, then select UNIVERSAL INPUT 3. Set signal type as Digital Input and select your desired function.

Any movement in the motion sensor working area will activate your selected function.

7.5.5 Push button

A push button is a simple mechanical button which can be used to activate one of many available functions. Universal input can be easily re-configured to activate a different function.

Component/product — Article number:

• Push button — 9693

| 01_1.8.0

Page 49

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 push button is connected.

If, for example, it is connected to UI3 on the connection board, then select UNIVERSAL INPUT 3. Set signal type as Digital Input and select your desired function.

Pressing a push button will activate your selected function.

Accessories

| 01_1.8.0

Page 50

Systemair UAB Linų st. 101 LT–20174 Ukmergė, LITHUANIA

Phone +370 340 60165 Fax +370 340 60166

www.systemair.com

SAVE VTC 500 · · · en_GB · 2019-09-03 · 01_1.8.0