Airflow AIROVENT MEV WH4B Operation manual

80001184 –Issue 1 02/22

Installation / Operation and Service

Guide

MEV WH4B & MEV WH6B

Part No`s: 90001495 & 90001496

Central Mechanical Extract Ventilation

Units

90001495

90001496

Page 1 of 23

Contents

Page 2 of 23

Page Nº Heading

3 Unit Dimensions

4 Unit Specifications

5 Transport and Storage

6 –7 Electrical Installation

8 Wiring Diagram

9 –10 Mechanical Installation

11 –14 Duct Connection

15 –16 Fan Performance Settings

17 Flow / Pressure Graph

18 –19 Service and Maintenance

20 Fan and Packaging Disposal

21 Assorted Accessories

22 –23 Warranty

Overall Unit Dimensions

Page 3 of 23

Unit Specifications

Voltage Required: 230V –50 / 60Hz –1Ph

Three Fan Speed Bands Available:

Band 1(Low) = Two speeds –87 and

123m³/h

Watts= 5 & 8

Band 2 (Medium) = Eight speeds –97 to 234

m³/h

Watts = 6 To 27

Band 3 (High) = Eight speeds –158 to 335

m³/h

Watts = 12 to 71

Weight: 3.5Kg

MEV WH4 = 3 x 125Ø ports from rooms &

1 x 125Ø to outside

MEV WH4B = 6 x 75Ø ports from rooms &

1 x 125Ø to outside

Page 4 of 23

Transport and Storage

Units should be stored in their original packaging in

a dry environment protected from the weather. If

palletised quantities are stored or transported, it is

recommended they are covered to protect against

particulate damage and contamination.

Suitable storage temperatures are between –10ºC

and +40ºC.

Care should be taken when re-packing any unit to

ensure the packaging is suitable for the required

form of transport. Damage due to improper

transportation, storage or installation is not covered

under warranty. Care should be taken when lifting.

Correct lifting techniques / apparatus should be

used when necessary. Dropping or sharp blows to

the fan can cause damage. Any damage to the fan

or packaging should be inspected by a suitably

qualified person or returned to Airflow

Developments Ltd for inspection before use.

Fans should not be lifted or carried by an electrical

lead, if fitted.

Page 5 of 23

Electrical Installation

All electrical installations must be carried out by an

approved electrician in accordance with the latest

IET BS7671 Requirements for Electrical Installation,

Low Voltage Directive 2014/35/EU, Machinery

Directive 89/392/CE or the appropriate regulations

in the country of installation. All fans require a 240V

50/60 Hz single phase supply. Electric circuit to be

used should be isolated before any work is carried

out.

All electrical connections and controls can be found

under the unit’s top protective cover held on with two

large screws. See fig.D page 10. The units electrical

supply cable must be fitted through the cable

retaining path moulded into the unit’s electrical

connection tray. As below.

Page 6 of 23

Electrical Installation contd.

All cables should be suitably retained and

enclosed where necessary to prevent damage

taking place. A 3 x pole lockable isolation switch with

a 3mm contact gap should be used on the mains

supply to the unit.

The unit should be protected by using a 3amp inline

fuse.

Before function testing the fan, ensure the impeller

runs freely. Function testing should be carried out by

switching the fan on for a short time. When the fan is

running, checks should be carried out for: impeller

rotation direction, undue noise or vibration and

power consumption. Immediately switch off the fan

should any problems be found, and contact Airflow

Developments Ltd. Fan motors used are suitable for

continuous running and have a rated duty type S1

(motor is suitable to this duty type and rating at which

the fan may be operated for an unlimited period).

Page 7 of 23

Wiring Diagram

230V –50 / 60Hz –1Ph

Airflow Developments fan speed switch,

Part number 90000541 should be used.

Page 8 of 23

L1 = High Speed

L2 = Medium Speed

L3 = Permanent Live

Page 8 of 23

Mechanical Installation

Mechanical installation should only be carried out

by a competent person. Fans are supplied ready for

installation. Care should be taken when removing

the fan from its packaging. Correct lifting

techniques / apparatus should be used where

necessary. Fans should be inspected for any

damage. If the fan is found to be damaged it should

be returned to the supplier immediately. Fans

should be installed to a sufficiently solid structure

giving adequate support. Fixings supplied with the

unit should be used. Alternatively, Airflow

Developments Rubber mount part number

90001294 (set of four) can be used to help protect

against mechanical noise transmission into the

mounting surface.

Units are mounted by using the 6mm clearance

holes provided in the extract duct connection box.

See fig A –B –C & D page 10.

Units can be mounted at any angle or position.

When mounting ensure there is no distortion to the

fan case.

Page 9 of 23

Mechanical Installation contd.

Air in

Air out

Page 10 of 23

This manual suits for next models

Table of contents

Other Airflow Fan manuals

Airflow

Airflow MaxAir 7105A User manual

Airflow

Airflow MultiPlexBox Configuration guide

Airflow

Airflow AIROVENT MEV WH4H CENTRAL EXTRACT User manual

Airflow

Airflow Duplexvent Flexi DV1600 User manual

Airflow

Airflow AV100T User manual

Airflow

Airflow QuietAir User guide

Airflow

Airflow iCON 30 Installation guide

Airflow

Airflow OW7205 User manual

Airflow

Airflow Aura Smart User manual

Airflow

Airflow QuietAir QT 150B User manual

Airflow

Airflow 7106A User manual

Airflow

Airflow Aventa AV100B Installation guide

Airflow

Airflow Duplexvent Flexi DV650 Service manual

Airflow

Airflow iCON 15S Installation guide

Airflow

Airflow 8QRKDE User manual

Airflow

Airflow Aria 100B Installation guide

Airflow

Airflow 100mm Wallvent User manual

Airflow

Airflow Duplexvent MULTI-N User manual

Airflow

Airflow Adroit DV50 User manual

Airflow

Airflow Adroit DV110 User manual

Airflow

Airflow iCON Installation guide

Airflow

Airflow MV150 PECO User manual

Airflow

Airflow QuietAir QT 100T User manual

Airflow

Airflow LA HABRA User manual

Popular Fan manuals by other brands

ELTA FANS

ELTA FANS H03VV-F installation guide

Hunter

Hunter 20714 Owner's guide and installation manual

Emerson

Emerson CARRERA VERANDA CF542ORB00 owner's manual

Hunter

Hunter Caraway Owner's guide and installation manual

Panasonic

Panasonic FV-15NLFS1 Service manual

Kompernass

Kompernass KH 1150 operating instructions

VES

VES FALA100/12V/TR Original instructions

Vertiv

Vertiv Liebert DCD user manual

Westinghouse

Westinghouse GFP Series owner's manual

Venmar

Venmar KUBIX HRV PLUS Series user guide

Maico

Maico ECR 31 installation instructions

Sonnenkonig

Sonnenkonig Dinky instruction manual

S&P

S&P ECOWATT HXBR manual

Wider

Wider IMP03369BH instruction manual

Panasonic

Panasonic F-60DHN Operating and installation instructions

Hinkley

Hinkley HIGHLAND instruction manual

Broan

Broan 766BN installation guide

Premium

Premium PFS16022 Use manual