Vent-Axia Multihome Basic NL Assembly instructions

PLEASE READ INSTRUCTIONS IN CONJUNCTION WITH THE ILLUSTRATIONS.
PLEASE SAVE THESE INSTRUCTIONS
DOWNLOAD THE ANDROID APP HERE: DOWNLOAD THE IOS APP HERE:
IPX2
220-240V~50Hz
MULTIHOME
RANGE
VENTILATION SYSTEMS
Installation and Wiring Instructions
Basic (NL) 8000001174
Wireless (NL) 8000001175
Basic Perilex (NL) 8000001176
Basic Perilex CO2(NL) 8000001260
Wireless Perilex (NL) 8000001177
Wireless Perilex CO2(NL) 8000001261
Wireless (BE) 1003000074
Uniflexplus+ Wireless (BE) 1003000075
Wireless CO2(BE) 1003000077
Uniflexplus+ Wireless CO2(BE) 1003000078

2
Installation and Wiring Instructions for the Multihome Extract Fans.
IMPORTANT:
READ THESE INSTRUCTIONS BEFORE COMMENCING THE INSTALLATION
 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://www.vent-axia.com/range/centralised-mechanical-extract-ventilation-mev

3
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)
CO2
Sensor
(Internal)
Wireless
Receiver
Bluetooth
Multihome
Basic (NL)
4
300
Yes
No
Yes
Yes
No
No
No
Multihome
Wireless (NL)
4
368
Yes
Yes
Yes
Yes
No
Yes
Yes
Multihome
Basic Perilex
(NL)
4
300
Yes
No
Yes
Yes
No
No
No
Multihome
Basic Perilex
CO2(NL)
4
300
Yes
No
Yes
Yes
Yes
No
No
Multihome
Wireless
Perilex (NL)
4
368
Yes
Yes
Yes
Yes
No
Yes
Yes
Multihome
Wireless
Perilex CO2
(NL)
4
368
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Multihome
Wireless (BE)
4
368
Yes
Yes
Yes
Yes
No
Yes
Yes
Multihome
Wireless CO2
(BE)
4
368
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Multihome
Uniflexplus+
Wireless (BE)
4
368
Yes
Yes
Yes
Yes
No
Yes
Yes
Multihome
Uniflexplus+
Wireless CO2
(BE)
4
368
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Figure 1
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 CO2sensor the unit can be programmed to give a response to the change in conditions.

4
Pressure vs Flow curves
Wireless (NL) 8000001175
Wireless Perilex (NL) 8000001177
Wireless Perilex CO2(NL) 8000001261
Wireless (BE) 1003000074
Uniflexplus+ Wireless (BE) 1003000075
Wireless CO2(BE) 1003000077
Uniflexplus+ Wireless CO2(BE) 1003000078
Basic (NL) 8000001174
Basic Perilex (NL) 8000001176
Basic Perilex CO2(NL) 8000001260
Figure 2
Figure 2

5
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, wall 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:
1.1. Keep the length of duct runs to a minimum, particularly the exhaust duct run.
1.2. If you need to use flexible ducting, make sure that it is fully extended and not crushed,
sagging or torn.
1.3. Tryto minimize the systems pressure dropby designing for lower in-duct velocitiesand connect to
the rooms with low pressure drop ceiling valves.
1.4. The bend radius (measured to the inside of the bend), should be at least 1x the duct diameter.
1.5. Avoid having any bends, filters or other obstructions within 250mm of the fan inlets and outlet.
1.6. 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.
Cover removal slots.
Figure 3
Figure 4

6
Figure 5
Figure 6

7
i. Base mounted Installation with ducting radiating out horizontally.
ii. 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.
Figure 7
Figure 8

8
iii. 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.
Figure 9

9
CONNECTION DIAGRAM
A: Main power connections
The LS1, LS2 and NS terminals are electrically isolated.
If the LS connections are used, a connection must be made with the NS terminal.
This can be via a jumper or dedicated neutral connection.
This appliance incorporates an earth connection for functional purposes only.
Connection
Description
1
L
Live (220-240Vac)
2
N
Neutral
3
Functional Earth
4
LS1
Live Switched 1, (220-240Vac), isolated
5
LS2
Live Switched 2 (220-240Vac), isolated
6
NS
Neutral Switched, isolated
1
2
3
5
4
6
A
Main power
connections
B
Low voltage
connections,
if fitted
Figure 10
Figure 11

10
B: Low voltage connections
For best performance use 4-core, low voltage, twisted pair, telecoms type cable for accessories.
Figure 12
Position
Label
Description
Action
A
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
A
P
D
E
L
M
Figure 13
Figure 14