Vent-Axia WDCCO Multihome Range Instruction Manual

Vent-Axia WDCCO Multihome Range

Product Information

Specifications:

• Model Number: Multihome BEP (NL) 8000001425
• Power Supply: 220-240V~50Hz
• Settable Speeds: 4
• Max Airflow: 300 m3/hr @150 Pa
• Switched Live Input (LS): Yes
• RS485 Connection: No
• Analogue and Digital Input: Yes
• Humidity Sensor (Internal): Yes
• CO2 Sensor (Internal): No
• Wireless Receiver: Yes
• Bluetooth: No
• Ingress Protection Rating: IPX2

Product Usage Instructions

1. Installation:

To maintain the IPX2 rating of the unit, follow these installation guidelines:

• Ensure that the unit is not mounted with the cover removal slots facing upwards or at an angle where they are visible from above.
• All other orientations are acceptable.
• Avoid mounting the unit with the outlet duct pointing down.

2. Wiring:

Follow the wiring instructions below:

• Refer to the illustrations provided in the user manual for proper wiring.
• If using flexible ducting, make sure it is fully extended and not crushed, sagging, or torn.
• Minimize system pressure drop by designing for lower in-duct velocities and connecting to

3. Speed Configuration:

The Multihome units feature 4 settable speeds. Follow the instructions below to configure the speed:

1. Refer to Figure 1 in the user manual to identify the model of your unit.
2. Find the corresponding model in the table and note the number of settable speeds.
3. Use the appropriate controls or inputs to change the speed based on your requirements.

4. Sensor and Control Inputs:

The Multihome units can be configured to change speed based on a wide range of sensor or control inputs. Follow the instructions below:

• Refer to Figure 1 in the user manual to identify the model of your unit.
• Check if your model supports analogue and digital inputs, humidity sensor, CO2 sensor, RS485 connection, wireless receiver, or Bluetooth.
• Connect the necessary sensors or controls as per the unit’s specifications.

5. Maintenance:

Regular maintenance is necessary to ensure optimal performance.
Follow these guidelines:

• Keep the length of duct runs to a minimum, especially the exhaust duct run.
• Clean or replace filters regularly as recommended by the manufacturer.
• Inspect the unit for any damage or obstructions that may affect airflow.

FAQs

Q: Where can I download the Android app for the Multihome Range Ventilation Systems?

A: You can download the Android app by clicking here.

Q: Where can I download the iOS app for the Multihome Range Ventilation Systems?

A: You can download the iOS app by clicking here.

Q: Where can I find the EU Declaration of Conformity for the Multihome Range Ventilation Systems?

A: You can find the EU Declaration of Conformity at the following URL: https ://vent-axia.nl/range/nl/multihome or https://vent-axia.be.

PLEASE READ INSTRUCTIONS IN CONJUNCTION WITH THE ILLUSTRATIONS. PLEASE SAVE THESE INSTRUCTIONS

DOWNLOAD THE ANDROID APP HERE: DOWNLOAD THE IOS APP HERE:

Installation and Wiring Instructions for the Multihome Extract Fans.

IMPORTANT:
READ THESE INSTRUCTIONS BEFORE COMMENCING THE INSTALLATION

SAFETY INSTRUCTION

• Do not install this product in areas where the following may be present or occur:
• Excessive oil or a grease laden atmosphere.
• Corrosive or flammable gases, liquids or vapours.
• Subject to direct water spray from hoses.
• Ambient temperatures higher than 40°C and lower than -20°C.
• Possible obstructions that may hinder access to or removal of the unit.
• All wiring must be in accordance with the current IEE wiring regulations BS7671, or appropriate standards of your country. Installation should be inspected and tested by a suitably qualified person after completion.
• Ensure the mains supply (voltage, frequency and phase) complies with the rating label.
• The unit should be provided with a local double pole fused spur fitted with a 3A fuse having a contact separation of at least 3mm.
• This appliance incorporates an earth connection for functional purposes only
• Precautions must be taken to avoid the back-flow of gases into the building from the open flue of gas or other fuel-burning appliances.
• This appliance is not intended for use 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 concerning use of the appliance by a person responsible for their safety.
• Young children should be supervised to ensure that they do not play with the appliance.
• Cleaning and user maintenance shall not be done by children
• The installer is responsible for the installation and electrical connection of the unit on site. It is the responsibility of the installer to ensure that the equipment is safely and securely installed and left only when mechanically and electrically safe.
• All regulations and requirements must be strictly followed to prevent hazards to life and property, both during and after installation, and during any subsequent servicing and maintenance.
• Certain applications may require the installation of sound attenuation to achieve the sound levels required.
• The unit must not be connected directly to a tumble drier.
• The exhaust grille should be located at least 600mm away from any flue outlet.
• This product and associated duct installation should be carried out in accordance with the Domestic Ventilation Compliance Guide.

Models that support Radio and Bluetooth communication the below applies

• Bluetooth variants contain FCC ID: S9NSPBTLERF
• Bluetooth LE: -12dBm EIRP (63μW), nominal 2450MHz.
• Bluetooth v4.1 compliant
• Bluetooth and radio variants obtained RED certificate: No. 0051-RED-0011 REV. 0
• Zirconia Wireless: -14dBm EIRP nominal 868MHz.
• The manufacturer hereby assure that this type of Bluetooth radio and 868MHz radio equipment complies with RED Directive 2014/53 / EU
  The full text of the EU Declaration of Conformity can be found at the following URL: https://vent-axia.nl/range/nl/multihome
  https://vent-axia.be

INTRODUCTORY NOTES

The Multihome units are designed for simultaneous extract ventilation of multiple rooms such as bathrooms, kitchens and toilets. The units use a highly efficient backward curved centrifugal motor impeller set and are designed for continuous 24-hour use. Approved for ventilation according to NBN D50-001 (BE) and NEN-en 13053 (NL). Units are supplied ready to use and include a power plug or Perilex lead.
The units feature 4 settable speeds and can be configured to change speed based on a wide range of sensor or control inputs as depicted below

Figure 1

Model

| ****

Settable Speeds

| Max airflow (m3/hr @150

Pa)

| ****

Switched Live Input (LS)

| ****

RS485

Connection

| Analogue and Digital Input| ****

Humidity Sensor (Internal)

| ****

CO 2

Sensor (Internal)

| ****

Wireless Receiver

| ****

Bluetooth

---|---|---|---|---|---|---|---|---|---
Multihome BEP (NL)| 4| 300| Yes| No| No| Yes| No| Yes| No
Multihome BPC (NL)| 4| 300| Yes| No| No| Yes| No| Yes| No
Multihome BPD (NL)| 4| 300| Yes| No| No| Yes| No| Yes| No
Multihome EEP (NL)| 4| 368| Yes| No| No| Yes| No| Yes| No
Multihome AEP (NL)| ****

4

| ****

368

| ****

Yes

| ****

No

| ****

Yes

| ****

Yes

| ****

No

| ****

Yes

| ****

Yes

Multihome AEC (NL)| 4| 368| Yes| Yes| Yes| Yes| Yes| Yes| Yes
Multihome WDC (BE)| ****

4

| ****

368

| ****

Yes

| ****

Yes

| ****

Yes

| ****

Yes

| ****

No

| ****

Yes

| ****

Yes

Multihome WDCCO (BE)| ****

4

| ****

368

| ****

Yes

| ****

Yes

| ****

Yes

| ****

Yes

| ****

Yes

| ****

Yes

| ****

Yes

Multihome Uniflexplus+ WDC (BE)| ****

4

| ****

368

| ****

Yes

| ****

Yes

| ****

Yes

| ****

Yes

| ****

No

| ****

Yes

| ****

Yes

Multihome Uniflexplus+ WDCCO (BE)| ****

4

| ****

368

| ****

Yes

| ****

Yes

| ****

Yes

| ****

Yes

| ****

Yes

| ****

Yes

| ****

Yes

The units can be precisely programmed to determine how they respond to changes in sensor values or the status of the various signal inputs. The units will run at a Normal flowrate until a sensor or input change causes it to change speed. In the case of the Switched Live, Digital, Analogue, Wired and Wireless inputs the units will perform a step change in speed to the appropriate new level. In the case of the Humidity Sensor and CO2 sensor the unit can be programmed to give a response to the change in conditions.

Pressure vs Flow curves

Figure 2

• Multihome AEP (NL) 8000001175
• Multihome AEC (NL) 8000001177
• Multihome EEP (NL) 8000001428
• Multihome WDC (BE) 1003000074
• Multihome Uniflexplus+ WDC (BE) 1003000075
• Multihome WDCCO (BE) 1003000077
• Multihome Uniflexplus+ WDCCO (BE) 1003000078

Figure 3

• Multihome BEP (NL) 8000001425
• Multihome BPC (NL) 8000001426
• Multihome BPD (NL) 8000001427

INSTALLATION

Position the unit, taking into consideration the position of the rooms to be ventilated, the exhaust position and the electrical services. Ensure there is adequate access for installation and maintenance. The unit can be mounted horizontally or vertically. It can be positioned on the floor, walli or ceiling.
If the unit is sited in the heated void of the dwelling a condensate drain should not be necessary.
When sited in a cold void, consideration should be given to fitment of a condensate drain. Alternatively the unit and ducting can be externally insulated to minimize condensation within the units housing.
To reduce the system resistance in your duct system, and thereby avoid an increase in speed, power consumption and sound of the fan, follow these guidelines:

1. Keep the length of duct runs to a minimum, particularly the exhaust duct run.
2. If you need to use flexible ducting, make sure that it is fully extended and not crushed, sagging or torn.
3. Try to minimize the systems pressure drop by designing for lower in-duct velocities and connect to the rooms with low pressure drop ceiling valves.
4. The bend radius (measured to the inside of the bend), should be at least 1x the duct diameter.
5. Avoid having any bends, filters or other obstructions within 250mm of the fan inlets and outlet.
6. Set the valves to their maximally opened positions for a minimal pressure drop.

Securely mount the unit through the mounting holes on the casing using appropriate fixings for the mounting substrate. Anti-vibration mounts; acoustic mat or rubber bushes can also be used.
Fixings (not supplied) must be capable of securing 4 x the weight of the unit. Unit weight: 4.1kg
To maintain the Ingress Protection (IPx2) rating of the unit, the unit must NOT be mounted with the cover removal slots facing upwards, or at an angle where they are visible from above.
All other orientations are acceptable. Do not mount the unit with the outlet duct pointing down. See the dimensional details below for the mounting hole positions.
Spigots are 125mm diameter. 125 – 150mm accessory adaptors are available. When installing Ø90mm ducting onto a Uniflexplus+ unit, keep inserting the ducting into the sockets until three clicks have been heard.
Full insertion of the ducting is necessary to achieve a seal with the unit .

1. Base mounted Installation with ducting radiating out horizontally.
2. Vertically mounted Installation with the exhaust spigot at top. The electrical connections must come out of the bottom of the unit in order to maintain the water ingress protection.
3. Ceiling mounted Installation with ducting radiating out horizontally.

WIRING

WARNING:
THE UNIT AND ANCILLARY CONTROL EQUIPMENT MUST BE ISOLATED FROM THE POWER SUPPLY DURING THE INSTALLATION / OR MAINTENANCE. THIS UNIT MUST BE EARTHED.

1. To remove the cover, use a coin or similar; depress the retaining tabs via the slots in the side of the unit.
2. With the power off, connect a suitable mains power cable from a switched, fused spur to the screw terminal block. Use the cable clamps and clip provided to secure the lead.
3. Two mains voltage Live Switched (LS1 and LS2) connections are provided and can be used to trigger a change in speed. Common inputs would be from a bathroom lighting circuit. When commissioning the unit, a delay on timer and an overrun timer can be selected and adjusted in the software using the buttons and screen. See Unit Adjustment section on page 12 of this document for details.
4. The switched live output (230Vac) from any other switch or controller, (such as a simple latching pull cord or push-button switch, humidistat or PIR detector) can be connected to the LS terminal instead of connecting to a lighting circuit.
5. Important: Use low voltage twisted pair, data cable for accessories that are connected via the IO (Input Output) PCB. See the Low Voltage Connections diagram, use the cable clamp and grommet provided.
6. There are no, delay-on or overrun timers when connecting via the Low Voltage connections (B), as the controller should determine when the fan is running at Boost or Normal speeds. Use the LS connection described above if a timer is needed.

CONNECTION DIAGRAM

A: Main power connections

The LS1, LS2 and NS terminals are electrically isolated.
Note: Neutral link between 2 & 6 should be removed if different RCD protection circuits are used for mains power a & Live Switch connections.
Note: Ensure all live & neutral are isolated before servicing.

Connection| Description| Perilex Advance BPC| Perilex Advance BPD
---|---|---|---
1| L| Live (220-240Vac)| L3 (Brown)| L1 (Brown)
2| N| Neutral| N (Blue)| N (Blue)

3

| | Functional Earth|

E (Green/Yellow)

|

E (Green/Yellow)

| Protective Earth
4| LS1| Live Switched 1, (220-240Vac), isolated| L2 (Black)| L2 (Grey)
5| LS2| Live Switched 2 (220-240Vac), isolated| L1 (Grey)| L3 (Black)
6| NS| Neutral Switched, isolated| Link to N| Link to N
7| N + NS| Link Wire (Blue)| |

B: Low voltage connections

For best performance use 4-core, low voltage, twisted pair, telecoms type cable for accessories.

Figure 44

RS485

| 5V| 5V Output, Max 250mA| RS485 communication to wired accessories.

Data connection (B, C) if available.

The 5V and Ground connections are available on all units.

B| A+| Data
C| B-| Data
D| GND| Ground
E| ****

D IN 2

| COM| Digital input common| Go to Boost speed (Min.1V, max. 6V).

The 5V output from the RS485 connection can be used as a power supply

F| +| Digital input 2
G| ****

D IN 1

| COM| Digital input common| Go to Low speed (Min.1V, max. 6V).

The 5V output from the RS485 connection can be used as a power supply

H| +| Digital input 1
I| D OUT 2| COM| Digital output common| Unpowered Boost indicator Switch

(Switching 6V 50mA max)

J| +| Digital output 2
K| D OUT 1| COM| Digital output common| Unpowered LED fault indicator switch

(Switching 6V 50mA max)

L| +| Digital output 1
M| AN 2| +| Analog input 2| 0-10V analogue input.

Two user settable voltage thresholds with two user settable actions. The unit will run at Normal when supplied voltage is between the two thresholds.

N| GND| Ground
O| AN 1| +| Analog input 1
P| GND| Ground

RS485 Wired inputs
The RS485 terminals are used to connect compatible sensors and switches.
The connection allows sensors be daisy chained to simplify wiring. The maximum length of cable run from the unit is limited to 250m. Once accessories are wired to the unit, they must be paired to the unit to function correctly.

RS485 Wired input connection diagram

RF868 Wireless inputs
Units that contain a Wireless receiver can be paired with compatible sensors, these can be mains or battery powered depending on the sensor.
A maximum of 15 wired and wireless sensors can be connected to a single unit.

Pairing sensors

To pair the unit with a wired or wireless sensor:

• Press the Mode button to turn on the display.

• Press and hold the Mode button until the LED illuminates solid White

• Release the mode button, the LED will flash White to indicate that it is in pairing mode.
  The unit will remain in pairing mode for approximately 1 hour, or until the mode button is pressed again. Multiple sensors can be paired while in pairing mode.

• Activate the pairing function on the sensor to be paired (see the instructions that came with the sensor).

• When a sensor is paired the total number of paired devices is displayed on the unit.

Removing sensors
To remove paired sensors, the unit must be reset. Caution, this will reset all values back to factory default.

• Press the Mode button to turn on the display.
• Press and hold the Mode button until the LED illuminates solid Red
• Release the mode button, the LED will stay Red.
• Pressing the Mode button again will confirm the reset command. If a reset is not wanted, leave the unit until the command times out and the LED turns off.

C: Sensor priorities

The unit set the motor speed based on the source in the following order:

• User override
• LS inputs (1 and 2)
• Digital inputs (1 and 2)
• Sensor override: The Sensor override action is decided based upon the Sensor input (Humidity Sensor, Co2 sensor, Analog inputs) whichever sets the motor to run in Highest speed.
• Default speed (run in normal speed)

Note: At each priority state, if more than one inputs are active (e.g. Digital input 1 and 2 are active), then motor will always run at a speed from the input which has highest speed level.

Example – LED Fault Indicator Connection (BEP/BPC & BPD do not have this facility)Example – LED Boost Indicator Connection (BEP/BPC & BPD do not have this facility) Low Voltage Switch’s – Boost & Low Speed

FEATURE DESCRIPTIONS

If compatible, the unit can be controlled via the Bluetooth linked App. This is only available on Multihome Wireless units. (See table p.3)

Comfort mode
If Comfort mode is enabled the unit will behave as follows to all LS inputs:

speed)

LS input active more than 5 minutes but less than 20 minutes

| Once LS input is removed, fan will run at user selected speed for the length of time LS was

present plus the set over-run time (if over run is enabled).

LS input active more the 20 minutes

| Unit will Boost after 20mins.

Once LS input is removed, fan will run at user selected speed for 20 minutes plus the set over- run time (if over run is enabled).

The above applies to all LS inputs. The times are not adjustable by the user.

• Delay On
  A dela y can be set so that the unit will not respond to an input until after the set delay has elapsed, applies to LS inputs only.

• Overrun Timer
  The unit can be set to run for a defined period after the input is removed, applies to LS inputs only.

• **Humidity – Rapid rise***
  Rapid Rise humidity response functions to detect rapid rises in humidity when the ambient %RH is under the threshold setting. If a rapid rise is detected the fan will boost until the humidity lowers again.

• **Humidity – Ambient response***
  When ambient response is enabled the threshold set point is modified based on the ambient temperature. This helps to prevent nuisance boosting of the unit as temperatures changes during the day.

• **Humidity – Threshold***
  The unit will boost when the RH is above the threshold set point.

• **CO2 threshold Boost / Purge***
  The unit will go to Boost / Purge when the detected CO2 level exceeds the set thresholds.

• Analogue inputs
  Both analogue inputs have adjustable low and high trigger voltages within the 0-10V range.
  The response to being above or below either of the threshold voltages is user settable.
  Note: The display doesn’t show a decimal point, for example at threshold voltage of 5.2V, is displayed as “52” on the unit.

• Digital Inputs
  The unit can be set to change speed (selectable), based on whether the digital inputs are above or below the threshold voltage. See the table of Low Voltage Connections for details.

• Display Lock
  To protect the settings on the MEV unit a pin code can be enabled via the main menu.
  Once the lock function has been enabled the Pin code can be set.
  The 3 digit pin is A to F, 0 to 9, and the default is LoC.

• If external RH or CO2 sensors are fitted via RS485, they will have priority over the internal sensors, their value will also be displayed on the unit in preference to the internal sensor.

UNIT ADJUSTMENT

1. Commissioning and configuration on all products is supported by the 3 digit user interface and associated push buttons.

2. When powered on, the unit will display the firmware revision number, after a few seconds the unit will display the first option in the menu structure (see below).

3. The display will enter standby mode after 30 seconds, press the Mode button to turn the display back on.

4. Changes to the settings can be made via the + and – buttons, the Mode button will accept changes and move onto the next menu option.

5. When setting the speeds, there is an internal logic: Low<Normal<Boost<Purge.
   I. e., Boost is always higher than Normal.

6. The actions for each of the Live Switched (LS), inputs are selectable. The setting for delays and over run timers are applicable to all inputs.

7. To restore factory settings, Press and hold “Mode” button for 10 seconds

Wireless units can be commissioned via the Bluetooth connected App.

Links to the App are shown on the cover page of this manual. The App must be installed before a connection to the unit is possible.

Bluetooth Pairing
To enable Bluetooth pairing on the unit:

• Press the Mode button to turn on the display

• Press and hold the Mode button until the LED illuminates solid Blue
  Release the mode button, the LED will flash Blue to indicate that it is in pairing mode.

• Follow the instruction on the App to connect to the unit.

User Configurable Parameters

Display

text

| Function| Selections| Default
---|---|---|---
Lxx| Low speed| 1 to 97% motor speed| 10%
nxx| Normal speed| 2 to 98% motor speed| 25%
bxx| Boost speed| 3 to 99% motor speed| 35%
Pxx| Purge Speed| 4 to 100% motor speed| 50%
LS1| Live switch 1| Low, Boost or Purge speed| Low
LS2| Live switch 2| Low, Boost or Purge speed| Boost
LS3| Live switch 1&2| Low, Boost or Purge speed| Purge
c-n| Comfort mode| Comfort mode – yes or no| No
d-n| Delay On| Delay on – yes or no| No
dxx| Delay On time| Delay to boost duration 1 to 60 minutes| 10m
o-n| Overrun| Overrun – yes or no| No
oxx| Overrun time| Overrun duration 1 to 60 minutes| 10m
r-y| Humidity – Rapid Rise| Rapid rise – yes or no| No
A-n| Humidity – Ambient Response| Ambient response – yes or no| No
hxx| Humidity threshold| Ambient response threshold 40 to 90% RH| 70%
C2b| CO2 threshold boost| Boost threshold 650 – 4950 PPM in increments of 50| 100
C2P| CO2 threshold purge| Purge threshold 700– 5000 PPM in increments of 50| 120
A1LA| Analogue 1 – low action| Low, Normal, Boost or Purge speed| Low
A1HA| Analogue 1 – high action| Low, Normal, Boost or Purge speed| Boost
A1tL| Analogue 1 – low threshold| Analogue Input Threshold Low 1 – 99| 15
A1tH| Analogue 1 – high threshold| Analogue Input Threshold High 1 – 99| 75
A2LA| Analogue 2 – low action| Low, Normal, Boost or Purge speeds| Low
A2HA| Analogue 2 – high action| Low, Normal, Boost or Purge speeds| Boost
A2tL| Analogue 2 – low threshold| Analogue Input Threshold Low 1 – 99| 15
A2tH| Analogue 2 – high threshold| Analogue Input Threshold High 1 – 99| 75
D1| Digital input 1 Action| Low, Boost or Purge speeds| Low
D2| Digital input 2 Action| Low, Boost or Purge speeds| Boost
unl| Unlock code| Turn on/off the menu lock| – – –
PIn| Display Pin| 3 characters A to 9| LoC
dtxx| Display time| Adjust how long the display is illuminated| 10m
rot| Rotate display| Invert the display| rot
hu| Humidity| Show the current internal humidity| %
tu| temperature| Show the current internal temperature| °C
CO2| CO2| Show the current CO2 level| PPM
rEf| Calibration reference value| 40 to 200| 40 (400ppm)
cAL| Calibration Mode| Y to enable| n
end| end| End of menu (loop to start)|

If the unit being commissioned is not fitted with the relevant hardware, or the specific room sensor is not paired, the associated menu options will not be available.

CO2 Calibrations

The following instructions describe the actions required to calibrate the CO2 sensors used within the MEV unit (if fitted), and the Room Sensor accessories in two steps:

1. MEV Unit – Internal sensor
   Step 1 can be done by either Exposure method or Measurement method, the baseline step 2 is actioned once either step 1 options are complete.

2. Exposure method step 1
   Exposure method assumes that the outside CO2 concentration is 400 PPM in the rooms in which the MEV extracts air from, the Rooms must be well ventilated by opening any external windows and doors for 10 to 15 minutes. The room must remain well ventilated and unoccupied until after the baseline step has been actioned.

3. Measurement method step 1
   If the Engineer has a calibrated CO2 meter they simply need to measure the CO2 in accordance to the CO2 meters instructions within the rooms the MEV extract air from. Measurement taken from each room should be recorded and then averaged.
   Example; Room 1 – 450ppm + Room 2 440ppm + Room 3 – 460ppm = 1350ppm / 3 = 450ppm The averaged value is then used during the baseline step.

4. Baseline step 2
   MEV On-Board display method
   Within the MEV menu there is rEF which has a default value of 40 (=400ppm), if using the Exposure method of calibration this does not need to be changed.
   For the Measurement method of calibration, the value within rEF should be changed to the recorded average PPM, using the example value this would be 45 (=450ppm).
   With the rEF value set as required, the user should navigate to the cAl menu and use the
   up/down arrow to select y (=Yes). The status LED will start blinking Magenta colour signifying the start of the calibration, the MEV will repeatedly read the CO2 sensor for 3 minutes to obtain a stable reading, once the status LED stops flashing the Calibration value has been set.
   MEV Mobile App method
   Once the app is connected to the MEV navigate to the CO2 screen from the home screen. On the CO2 screen enable Set CO2 calibration at the bottom of the page.
   An additional slide bar will appear with a default value set to 400ppm, if using the measurement method, the value should be changed to match the measured averaged recorded PPM, using the example value this would be 450ppm. For the Exposure method the value should be unchanged at 400ppm.
   With the value set the Save button should be pressed in the top right of the screen to start the calibration process, the status LED will start blinking Magenta colour signifying the start of the calibration, the MEV will repeatedly read the CO2 sensor for 3 minutes to obtain a stable reading, once the status LED stops flashing the Calibration value has been set.

5. Room Sensor Calibration
   The Room sensor can only be calibrated using the Exposure method and will have Auto Background Calibration (ABC) by default.

6. Exposure method Step 1
   Exposure method assumes that the outside CO2 concentration is 400 PPM in the room which the Sensor is fitted, the room must be well ventilated by opening any external windows and doors for 10 to 15 minutes. The room must remain well ventilated and unoccupied until after the baseline step is complete.

7. Baseline method – Step 2
   With the Room sensor paired to the system the status LED will be Green when the button is pressed, in this condition the button should be pressed and held (8 Seconds) until the status LED is Magenta, the button should then be released and the LED will be blinking Magenta to signify the start of the calibration process, the room should be unoccupied once the calibration has started and should remain so for 5 minutes. During the calibration process the Room sensor will repeatedly read the CO2 sensor for 3 minutes to obtain a stable reading, once the status LED stops flashing the Calibration value has been set.

SERVICING & MAINTENANCE

WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE ISOLATED FROM THE POWER SUPPLY DURING MAINTENANCE.

1. Individual faulty parts should not be replaced due to complexity of assembly. Only the full scroll assembly is replaceable.
2. To remove the scroll assembly, isolate the power, then use a coin or similar to depress the cover retention clips and remove the cover.
3. Disconnect and remove the power supply and signal leads.
4. Remove the scroll assembly by unscrewing the two screws and unclipping the clips in the opposite two corners and lift the scroll assembly out of the housing.
5. The fan has sealed for life bearings, which do not require lubrication. Expected service life is at least 45,000 hours continuous running.
6. Upon reassembly, check all fixings are tight and secure.

FAULT CODES
If the MEV unit detects a fault it will display an error message on the HMI display:

Fault Code| Description|
---|---|---
F01| Control fault – Unit failed startup check| Turn the power off and on again.
F02| Motor Fault – No RPM

(BEP/BPC & BPD do not have this facility)

| Check that the impellor has free movement. Check internal motor wiring.
F03| Humidity/Temp sensor Fault – No value – internal sensor| Contact tech support, scroll part.
F04| CO2 sensor Fault – No value – internal sensor| Check the internal wiring to the sensor
F05| Temp or Humidity sensor connected via RF/RS485 is offline/Lost| Check that the sensor is turned on.

Re-pair the sensor to the unit, see page 10.

F06| CO2 sensor connected via RF/RS485 is offline/Lost| Check that the sensor is turned on.

Re-pair the sensor to the unit, see page 10.

F07| 4-Way Speed Switch| SSU offline or lost – Please reconnect
F08| AIM (Alarm Interface Module)| AIM Sensor triggered / offline or lost – Verify Issue

If the fault persists, contact your local technical support, see the back cover of this manual for details.

SPARE PARTS AND ACCESSORIES

For spare parts and accessories, please contact your local agent, details provided on the final page of this manual.

Compatible accessories

Product Fiche

Control Typology

| ****

Local Demand Control

Declared: -Max Internal & External Leakage Rates (%) for BVUs or carry over (for regenerative heat exchangers only), Ext. Leakage Rates (%)

for Ducted UVUs;

| ****

<5% Internal, <5% External

Mixing Rate of Non-Ducted BVUs not intended to be equipped with one duct connection on either supply or

extract air side:

| ****

N/A

Position and description of visual filter warning for RVUs intended for use with filters, including text pointing out the importance of regular filter changes for performance and

energy efficiency of the unit

| ****

N/A

For UVUs (Instructions Install Regulated Supply/Extract Grilles Façade)| ****

In F&W

Internet Address (for Disassembly Instructions)| www.vent-axia.be

www.vent-axia.com www.vent-axia.nl

Sensitivity p. Variation@+20/- 20 Pa: (for Non-Ducted VUs)| N/A
Air Tightness-ID/OD-(m3/h) (for Non-Ducted VUs)| N/A
Annual Electricity Consumption: AEC (kWh/a)| 0.4
Annual Heating Saved: AHS (kWh/a)|
AHS: Average| 28.3
AHS: Warm| 12.8
AHS: Cold| 55.4
Name:| Vent-Axia Multihome
---|---

Model ID (Stock Ref.):

| Multihome EEP (NL) 8000001428| Multihome AEP (NL) 8000001175| Multihome AEC (NL) 8000001177| Multihome WDC (BE) 1003000074| Multihome WDCCO (BE) 1003000077| Multihome Uniflexplus+

WDC (BE) 1003000075

| Multihome Uniflexplus+

WDCCO (BE) 1003000078

SEC Class| B
SEC Value (‘Average’)| -27
SEC Value (‘Warm’)| -11.5
SEC Value (‘Cold’)| -54.1
Label Required? (Yes/No=Out of scope)| Yes
Declared as: RVU or NRVU/UVU or BVU| RVU/UVU
Speed Drive| Multi Speed
Type HRS (Recuperative, Regenerative, None)| None
Thermal Eff: [ (%), NA (if none)]| N/A
Max. Flow Rate (m3/h)| 400
Max. Power Input (W): (@Max.Flow Rate)| 52
LWA: Sound Power Level dB)| 50.7
Ref. Flow Rate (m3/s)| 0.078
Ref. Pressure Diff. (Pa)| 203
SPI [W/(m3/h)]| 0.08
Control Factor & Control Typology: (CTRL/ Typology)|
Control Factor; CTRL| 0.65

Control Typology

| ****

Local Demand Control

Declared: -Max Internal & External Leakage Rates (%) for BVUs or carry over (for regenerative heat exchangers only), Ext.

Leakage Rates (%) for Ducted UVUs;

| ****

<5% Internal, <5% External

Mixing Rate of Non-Ducted BVUs not intended to be equipped with one duct connection on either supply

or extract air side:

| ****

N/A

Position and description of visual filter warning for RVUs intended for use with filters, including text pointing out the importance of regular filter changes for performance and energy

efficiency of the unit

| ****

N/A

For UVUs (Instructions Install Regulated Supply/Extract Grilles Façade)| ****

In F&W

Internet Address (for Disassembly Instructions)| www.vent-axia.be www.vent-axia.com www.vent- axia.nl
Sensitivity p. Variation@+20/-20 Pa: (for

Non-Ducted VUs)

| ****

N/A

Air Tightness-ID/OD-(m3/h) (for Non-Ducted VUs)| N/A
Annual Electricity Consumption: AEC (kWh/a)| 0.5
Annual Heating Saved: AHS (kWh/a)|
AHS: Average| 28.3
AHS: Warm| 12.8
AHS: Cold| 55.4

Disposal
This product should not be disposed of with household waste. Please recycle where facilities exist. Check with your local authority for recycling advice.

Guarantee

Applicable only to products installed and used in the United Kingdom. For details of guarantee outside the United Kingdom contact your local supplier.
Vent-Axia guarantees its products for two years from date of purchase against faulty material or workmanship. In the event of any part being found to be defective, the product will be repaired, or at the Company’s option replaced, without charge, provided that the product: –

• Has been installed and used in accordance with the instructions given with each unit.
• Has not been connected to an unsuitable electricity supply. (The correct electricity supply voltage is shown on the product rating label attached to the unit).
• Has not been subjected to misuse, neglect or damage.
• Has not been modified or repaired by any person not authorised by the company.

IF CLAIMING UNDER TE RMS OF GUARANTEE
Please return the complete product, carriage paid to your original supplie r or nearest Vent-Axia Centre, by post or personal visit. Please ensure that it is adequately packed and accompanied by a letter clearly marked “Guarantee Claim” stating the nature of the fault and providing evidence of date and source of purchase.
The guarantee is offered to you as an extra benefit, and does not affect your legal rights

Head Office: Fleming Way, Crawley, West Sussex, RH10 9YX. UK NATIONAL CALL CENTRE: –

• Sales Enquiries:
  • Tel: 0344 8560590
  • Email: sales@vent-axia.com
• Technical Support:
  • Tel: 0344 8560594
  • Email:vatechsupport@vent-axia.com

Vent-Axia B.V. Nederland
Tel.: +31(0)497 74 50 90
E-mail: info@vent-axia.nl
www.vent-axia.nl

Vent-Axia België
Pieter Verhaeghestraat 8
8520 Kuurne
België
Tel. 0032 56 36 21 20
E-mail: info@vent-axia.be
www.vent-axia.be

As part of the policy of continuous product improvement Vent-Axia reserves the right to alter specifications without notice.

References

• Axia / Architecture & Interiors / Product Design / Environment / Brussels
• Fibre Optic Internet | Internet Service Provider | Calgary & Rural Alberta | Axia
• Meer informatie
• Vent-Axia België - Verschillende D-systemen en flexibele luchtkanalen
• Vent-Axia België - Verschillende D-systemen en flexibele luchtkanalen
• Vent-Axia - Ventilation, Heating, Hygiene and Cooling
• Vent-Axia - Ventilation, Heating, Hygiene and Cooling
• Vent-Axia België - Verschillende D-systemen en flexibele luchtkanalen
• Vent-Axia België - Verschillende D-systemen en flexibele luchtkanalen
• Multihome | Vent-Axia Netherlands

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