Vent-Axia 44 17 82 B, Centra Installation Instructions

Stock Ref. N°

PLEASE READ INSTRUCTIONS IN CONJUNCTION WITH ILLUSTRATIONS.

Centra

CONTINUOUS EXTRACT FAN

Installation and Wiring Instructions

220-240V~50Hz

PLEASE SAVE THESE INSTRUCTIONS.

44 17 82 B

IPX4

Installation and Wiring Instructions for the Centra Range of Extractor 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.

• Ambient temperatures higher than 40°C or less than –5°C.

• Possible obstructions which would hinder the access or removal of the Fan.

SAFETY AND GUIDANCE NOTES

A. All wiring to be in accordance with the current I.E.E.

Regulations, or the appropriate standards of your country
and MUST be installed by a suitably qualified person.

B. The Fan should be provided with a local isolator switch

capable of disconnecting all poles, having a contact
separation of at least 3mm.

C. Ensure that the mains supply (Voltage, Frequency, and

Phase) complies with the rating label.

D. The Fan should only be used in conjunction with the

appropriate Vent-Axia products.

E. The fan should only be used in conjunction with fixed wiring.
F. When the Fan is used to remove air from a room containing

a fuel-burning appliance, ensure that the air replacement is
adequate for both the fan and the fuel-burning appliance.

G. The Fan should not be used where it is liable to be subject

to direct water spray for prolonged periods of time.

H. Where ducted Fans are used to handle moisture-laden air, a

condensation trap should be fitted. Horizontal ducts should
be arranged to slope slightly downwards away from the Fan.

I. 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.

J. Young children should be supervised to ensure that they do

not play with the appliance.

DESCRIPTION

The Centra 100mm fan is a continuously running extract fan for kitchens, utility rooms,
bathrooms and toilets.

The product incorporates an airflow detection system that detects the installation duct
resistance and maintains the correct fan speed to achieve the preset extract flow rate of
either 6l/s, 9l/s or 15l/s, minimising energy use and noise (see Section C-Setup for more
information).

Long life ball bearing DC motor with anti-vibration mounts provides virtually zero noise
transmission into plasterboard/panels for silent operation.

The fan can be wall or panel/ceiling mounted.

ACCESSORIES (not supplied)

WALL FITTING KIT

A range of white (stock ref. 254102) or brown (stock ref. 254100) 100mm wall kits are
available for installing into most walls using telescopic liners supplied.

A. INSTALLATION

IMPORTANT: The fan should only be used in conjunction with fixed wiring.

PANEL/CEILING MOUNTING

1. For panel/ceiling mounting the fan should be installed into a closed duct system of
at least 1.2m long or protected by an exterior air grille that must comply with the
standard requirements of your country to prevent access to the fans impeller.

2. Cut a 105mm diameter hole.

3. Loosen the screw at the bottom of the grille and remove the front grille. Mark the
screw centres through the holes in the fan back plate. Drill, plug and screw into
position.

4. Attach ducting as required for the installation.

5. Wire the fan as described in Section B-Wiring. Adjust any settings as required
(see Section C-Setup).

6. Replace the grille and tighten the retaining screw.

7. After installation, ensure impeller rotates freely.

WALL MOUNTING

1. For wall mounting cut a 117mm diameter hole through the wall and insert the wall
sleeve. Slope the sleeve slightly downwards away from the fan. Cut to length and
cement both ends into position flush with the wall faces.

2. Loosen the screw in the bottom of the grille and remove the front grille. Mark the
screw centres through the holes in the fan back plate. Drill, plug and screw into
position.

3. Fix exterior grille into position with the louvres positioned downwards. (Note:- The
grille must comply with the standard requirements of your country to prevent
access to the fans impeller).

4. Wire the fan as described in Section B-Wiring. Adjust any settings as required
(see Section C-Setup).

5. Replace the grille and tighten the retaining screw.

6. After installation, ensure impeller rotates freely.

B. WIRING.

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

IMPORTANT

• The fan should only be used in conjunction with fixed wiring.

• The cross - sectional area of supply cord used should be ranged from 1 -1.5mm2.

• Cable entry can only be made from the rear of the fan.

• The extraction fan is suitable for connection to 220-240V 50Hz supply.

• The fan is a class ll double insulated product and MUST NOT be earthed.

1. Select and follow the appropriate wiring diagram. (Fig. 1, 2 or 3)

2. Check all connections have been made correctly and ensure all terminal
connections and cable clamps are securely fastened.

3. Ensure the impeller rotates and is free from obstructions.

C. SETUP

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

Accessing the control settings – (Fig. 4 and 5)

1. Loosen the screw in the bottom of the grille and remove the front grille.

2. Carefully pull the inner cap from the centre of the fan away from the chassis.

3. Adjust the settings as outlined below.

Trickle speed selection (6l/s or 9l/s) – (Fig. 7)

In normal running mode the fan can extract at either 6l/s (22m3/h) or 9l/s (32m3/h) flow
rate. The fan will boost to 15l/s (54m3/h) when the LS connection is switched.

• Factory set at 6l/s (22m3/h).

• Remove jumper connector (JP1) if 9l/s (32m3/h) extract flow rate is

required.

Airflow detection system – enable/disable (Fig. 8)
The airflow detection system will detect the installation duct resistance and also react to
external wind conditions to ensure the fan maintains a constant extraction rate. This can
cause the fan to ramp up and down and in most applications will not be required. To turn
this feature on, complete the following:

• Push switch (SW1) into the on position to turn on constant flow mode.

• Push switch (SW1) into the off position to turn off constant flow mode.

(Factory set)

IMPORTANT – On first power up, the fan will run through its initialisation routine. This
will involve the fan running on maximum speed for 10-20 seconds. After which the fan
will run as normal and will not need to be initialised/calibrated again. The fan will
remember its settings if there is a power cut.

D. SERVICING AND MAINTENANCE.





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

1. At intervals appropriate to the installation, the fan should be inspected and cleaned to

ensure there is no build up of dirt or other deposits.

2. Carefully push the front panel of the grille upwards away from the base part of the

grille (fig. 6).

3. Wipe the inlets and front face with a damp cloth until clean.

The fan has sealed for life bearings, which do not require lubrication.

Siting
the
fan.

Fig.1 Continuous trickle (6l/s or 9l/s) with no boost facility

Fig.2 Continuous boost (15l/s) with no trickle facility

Fig.3 Continuous trickle with boost facility

Fig.4. Removing the grille for wiring and setting the controls

1. Loosen screw. 2. Pull grille slightly away from
bottom edge.

Fig.5. Accessing the control settings

3. Push grille upwards until
clear from the fan chassis.

Fig.6. Removing the front grille panel for cleaning.

1

2

O

N

IMPORTANT:

DO NOT

CHANGE DIP

SWITCH 2.

LEAVE IN OFF

2

O

N

Fig.7. Speed Selection

9l/s = Remove Jumper Connector
6l/s = Replace Jumper Connector

(For 15l/s, permanently link terminal
connections L to LS)

Flow rate conversion:

6l/s = 22m3/h
9l/s = 32m3/h

JP1
JUMPER

(factory set)

Fig.8. Airflow detection system

On Off (factory set)

SW1 Dip
switch

1

Auto sensing mode = Push switch (SW1)
into the on position to turn on

detection system.

airflow

Manual mode = Push switch (SW1) into
the off position to turn off

detection system.

airflow

POSITION

Local Demand

or carry over (for regenerative heat exchangers only),

PRODUCT FICHE

For Residential Ventilation Units (Complying Commission Delegated Regulation (EU)

No 1254/2014

Name: Vent-Axia

Model ID (Stock Ref.) :

SEC Class C

SEC Value ('Average') 26.23

SEC Value ('Warm') 11.86

SEC Value ('Cold') 51.31

Label Required? (Yes/No=Out of scope) No

Declared as: RVU or NRVU/UVU or BVU RVU-UVU

Speed Drive 2-Speed

Type HRS (Recuperative, Regenerative, None) None

Thermal Eff: [ (%), NA(if none)] N/A

Max. Flow Rate (m3/h) 54.00

Max. Power Input (W): (@Max.Flow Rate) 2.40

LWA: Sound Power Level (dB) 33.02

Ref. Flow Rate (m3/s) 0.01

Ref. Pressure Diff. (Pa) N/A

SPI [W/(m3/h)] 0.06

Control Factor & Control Typology: (CTRL/ Typology)

Control Factor; CTRL 0.65

Control Typology

Declared: -Max Internal & External Leakage Rates(%) for BVUs

-&Ext. Leakage Rates (%) for Ducted UVUs;

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

Lo-Carbon Centra

dMEV - 441782

Control

N/A

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

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

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

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) 0.52

Annual Heating Saved: AHS (kWh/a)

AHS: Average 26.23

AHS: Warm 11.86

AHS: Cold 51.31

N/A

In F&W

Applicable only to products installed and used in the United Kingdom. For details of guarantee outside the United Kingdom contact your local

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

that it is adequately packed and accom panied by a letter clearly marked “Guarantee Claim” stating the nature of the fault and providing evidence of

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.

Please return the complete product, carriage paid to your original supplier or nearest Vent-Axia Centre, by post or personal visit. Please ensure

The guarantee is offered to you as an extra benefit, and does not effect your legal rights

The

supplier.

IF CLAIMING UNDER TERMS OF GUARANTEE

date and source of purchase.

Guarantee

Head Office: Fleming Way, Crawley, West Sussex, RH10 9YX.

UK NATIONAL CALL CENTRE, Newton Road, Crawley, West Sussex, RH10 9JA
SALES ENQUIRIES: Tel: [phone] Fax: [phone]
TECHNICAL SUPPORT: Tel: [phone] Fax: [phone]

For details of the warranty and returns procedure please refer to www.vent-axia.com or write to Vent-Axia Ltd, Fleming Way, Crawley, RH10 9YX

449430 C 0219