Vent-Axia MULTIVENT MV250 Assembly instructions

Installation and Wiring Instructions
Installation et raccordement électrique
Anweisungen zur Installation und Verkabelung
MV250 181510A 220-240V AC 50Hz 80W MV350 181010A 220-240V AC 50Hz 100W
MULTIVENT
Ventilation systems
Ventilateurs
Ventilatoren
453653 C 0600
Head Office: Fleming Way, Crawley, West Sussex RH10 2NN, ngland.
Tel: [phone] Fax: [phone]
Internet site at: www.vent-axia.com email: [email protected]
Fig./Abb. 6

VENT-AXIA MULTIVENT EXTRACTOR FANS - INSTALLATION INSTRUCTIONS
PLEASE READ ALL INSTRUCTIONS CAREFULLY BEFORE STARTING INSTALLATION.
FITTING AND WIRING INSTRUCTIONS SHOULD BE LEFT WITH THE END USER.
INTRODUCTION
The MULTIVENT range is designed for simultaneous ventilation for up to four separate areas such as bathrooms, kitchens and
toilets. The range is designed to handle exhaust ambient air temperatures up to 40°C, and can be mounted in three different
orientations for convenient installation in roof voids with a height of 250mm or greater. The MV250 and the higher performance
MV350 employ highly efficient backward curved centrifugal motor impeller sets. All models are designed for continuous 24 hour
use and should not be used in conjunction with a delay timer.
GENERAL SAFETY NOTES
1. Ensure that the mains supply voltage, frequency, number of phases and power rating comply with the details on the rating
label (positioned under top cover)
2. All wiring must be in accordance with the appropriate standards in your country (BS7671 in the U.K.). The equipment must
be provided with a local all pole isolator switch having a contact separation of at least 3mm.
3. This equipment must be earthed.
4. Ensure safety regulations and practices are adhered to when installing and using this equipment.
5. When the fan is used to remove air from a room containing a fuel burning appliance, the installer must ensure that air
replacement is adequate for both the fan and the fuel burning appliance.
6. This equipment should not be used where it is liable to be subjected to water spray from hoses, etc., or where ducted air
ambient temperature may exceed 40°C. Do not install this fan outdoors without weather protection.
7. When the fan is used to handle moisture laden air, a suitable condensate trap and drainage system should be incorporated
to ensure safe and healthy operating conditions.
8. DO NOT use this appliance where excessive moisture, excessive dust or fibres, grease or oil laden air, corrosive or
flammable atmospheres are present.
9. When installing unit, take care not to damage electrical or other hidden utilities.
10. Ducted ventilators must be vented to the outdoors.
11. The Vent-Axia fan motor is fitted with sealed for life bearings and therefore does not require lubrication.
MULTIVENT INSTALLATION
1. SITING
It is the responsibility of the installer to ensure that all aspects of system design are taken into consideration.
MULTIVENTisdesigned asa ducted unitand shouldonly beused in ducted applications. Short ductruns, terminatingclose tothe
fan (i.e. within 1.5m), must incorporate suitable guards. Between two and four intake ducts may be used, three on the case sides
and one in the base.
The MULTIVENT may be mounted in three orientations (see Figure 1).
(a) Base mounted with ducting radiating out horizontally (condensate drain is on the opposite side to the exhaust spigot at the
base).
(b) Vertically mounted with exhaust spigot at top (condensate drain opposite exhaust spigot under top cover. Additional
drainage may be required from duct connected to lowest spigot).
(c) Suspended (condensate drain opposite exhaust spigot, under top cover).
Figure 6 shows a typical installation.
Suitable mounting must be provided – see Figure 2 for mounting bracket dimensions.
2. INSTALLATION
Position the MULTIVENT, taking into consideration the position of the rooms to be ventilated, the exhaust exit position, the drain-
age position and electrical services. Ensure there is adequate access for installation and maintenance. Securely mount the
MULTIVENT through the mounting brackets on the casing using appropriate anti-vibration mounts, screws, washers, rubber
bushes, etc.
Where intake and exhaust ducts are to be connected to the MULTIVENT, remove the spigot caps if 125mm ducting is being used.
If 100mm ducting is being used, peel out the centre of the cap with a screwdriver as indicated, and leave the cap surround in
position. To connect ducting to the base intake, use a suitable adaptor attached using the 4 holes provided.
Ducting passing through an unheated roof void should be insulated. Ducting runs should be as straight as possible and intake
ducting should always slope downwards from the MULTIVENT. Connect ducting to the MULTIVENT spigots and to appropriate
ceilingterminations.
Remove the “knockout” from the appropriate condensate drain and connect to a suitable drainage system.

3. WIRING
ISOLATE MAINS SUPPLY BEFORE COMMENCING WIRING
Access to the MULTIVENT connection terminals is under the top cover which is retained by four screws. Ensure that the mains
supply voltage, frequency, number of phases and power rating comply with the details on the rating label positioned under the top
cover.
WARNING: THIS APPLIANCE MUST BE EARTHED
All wiring must be in accordance with local and/or national electrical codes as applicable or the appropriate standard in your
country (BS7671 in the UK). The MULTIVENTmust be supplied through a double-pole isolating switch, having a contact separa-
tion of not less than 3mm. Cable clamps are provided for use with the cable or flex on entry into the MULTIVENT.
The MULTIVENT has three speed settings. Select the required speed and wire as indicated in Figure 3.
Alternatively the MULTIVENT may be wired in a number of different ways to achieve optimum ventilation control. Figure 4 shows
awiring diagramto provide 3-speedsselectable bya remote switch. Figure5 showsa wiring diagramfor automaticswitching from
medium to high speed on rise of humidity utilising a Vent-AxiaAmbient Response Humidity Sensor, part number 563550.
4. OVER-HEATING PROTECTION
The fan motor is fitted with standardThermal Overload Protection. This will automatically switch the fan off in the event of a fault
condition. If this occurs isolate the fan, check for and remove any obstruction, leave for a short time for the motor to cool before
reconnecting. If this recurs, isolate and call a service engineer.

Rear intake
Evacuation arrière
Hinterseitiger Einlaß
Fig./Abb. 1
Fig./Abb. 2
Condensate drain – Mounted upright
Drain de condensation – montage vertical
Abflußrohr für das Kondensat – Aufrechte Montage
Condensate drain (under top cover) – Vertical or Suspended mounting
Drain de condensation (sous le couvercle supérieur) – montage vertical ou en suspension
Abflußrohr für das Kondensat (unter der oberen Abdeckung) – Vertikale Montage oder Hängemontage
a) b)
c)

Fig./Abb. 3
Fig./Abb. 4
Fig./Abb. 5
Wiring for 3-speeds selectable by external switch
Câblage pour 3 vitesses sélectionnables depuis un interrupteur externe
Schaltplan für fernbedienbare Einstellung der 3 Geschwindigkeitsstufen
Permanent wiring for fixed speed
Câblage permanent pour une vitesse fixe
Festverdrahtung für festgelegte Geschwindigkeitsstufe
Wiring for automatic switching from Medium to High speed utilising a Vent-Axia Ambient Response
Humidity Sensor,
Câblage pour passage automatique d’une vitesse moyenne à une vitesse élevée à l’aide du capteur
d’humidité ambiante Vent-Axia,
Schaltplan für die automatische Umschaltung von der mittleren zur höheren Geschwindigkeitsstufe bei
Einsatz eines Humidistats von Vent-Axia.

As part of the policy of continuous product improvement Vent-Axia reserves the right to alter specifications without notice.
The Vent-Axia 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 the 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:
1) has been installed and used in accordance with the instructions given with each unit.
2) 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.)
3) has not been subjected to misuse, neglect or damage.
4) has not been modified or repaired by any person not authorised by the company.
IF CLAIMING UNDER TERMS OF GUARANTEE
please return the complete product, carriage paid to your original supplier or nearest Vent-Axia Cen-
tre, 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
Cette garantie et sa carte d’inscription sont valides uniquement dans le Royaume-Uni, Pour les
details de la garantie hors du Royaume-Uni, veuillez contacter votre fournisseur local.
Diese Garantie - und Registrierungskarte gilt nur für das Grossbritannien. Einzelheiten über die
Garantie außerhalb des Grossbritanniens teilt ihnen gern ihr örtlicher Vertreib mit.
VENT-AXIA SALES CENTRES
SCOTLAND 12 Lambhill Quadrant,
Scotland Street Trading Estate,
Kinning Park, Glasgow G41 1S .
Telephone: [phone]
Fax: [phone].
ENGLAND & WALES NATIONAL
CALL CENTRE Newton Road, Crawley,
West Sussex RH10 2JA.
Telephone: [phone]
Fax: [phone].
NORTHERN IRELAND Unit 9 Alanbrooke
Park Industrial Estate, Alanbrooke Road,
elfast T6 9H .
Telephone: [phone]
Fax: [phone].
REPUBLIC OF IRELAND
Vent-Axia Ventilation Ltd. 921 Western
Industrial Estate, Naas Road, Dublin 12.
Telephone: [phone]
Fax: [phone].
Internet site at: www.vent-axia.com
email: [email protected]