Greenwood Unity CV3, Unity CV3 SELV Installation And Operating Instructions Manual

Unity CV3

Decentralised Mechanical Extract Ventilation (dMEV)

Installation and Operating Instructions

The Unity CV3 is a continuously
running (dMEV) extract fan, designed
to offer a simplistic approach to meet
Building Regulations and provide an
energy efficient domestic ventilation
solution to improve indoor air quality
in dwellings.

Please read instructions before
commencing the installation.

Please make these instructions
available for the user.

Overview

The Unity CV3 is a continuously running (dMEV) fan that revolves around
‘one product’, which has been designed to be flexible in application and
t

o meet the performance requirements of all ‘wet’ rooms within a dwelling.

This product features on the Product Characteristics Database (PCDB),
part of the process will require the Installation Checklist for dMEV
products to be completed and submitted to building control, available at
w

ww.ncm-pcdb.org.uk, along with all other relevant paperwork.

Your Unity CV3 may have the following features activated:

* Intelligent sensing via the Greenwood TimerSMART

automatic integral delay / over-run timer and humidity functions) which monitor the homeowners’ environment.

* Delay-on-timer, set between 1-60 minute period.

* A 'do not disturb' night mode where your fan will not boost for a period of time upon activation of the

light switch.

Note: These functions only affect the higher extract boost mode, your fan will continue to ventilate at the
lower trickle mode.

Key: Installer Information pages 2 - 9 User Information pages 10 - 11

TM

and Greenwood HumidiSMARTTMtechnology (fully

Important:

Please read these instructions before commencing the installation

• This appliance can be used by children aged from 8 years and above and persons with

reduced physical, sensory or mental capabilities or lack of experience and knowledge if they
have been given supervision or instruction concerning use of the appliance in a safe way and
understand the hazards involved. Children shall not play with the appliance.

• Cleaning and user maintenance shall not be made by children without supervision. Ensure

the fan is switched off from the mains supply before cleaning commences.

• Where an open-flued oil or gas-fuelled appliance is installed, precautions must be taken to

avoid a back-flow of gases into the room.

• When installing wall mounted fans, ensure that there are no buried cables or pipes in the way.

It is recommended that this fan is mounted >1.8m above floor level and within 400mm of the
finished ceiling.

• The fan should not be sited where it would be subject to a direct heat source in excess of 40°C,

e.g. at least 600mm distance from cooker hob.

• Observe appropriate safety precautions if working on steps or ladders.

• Wear eye protection when breaking out wall or ceiling materials, etc.

• To disassemble the unit, disconnect from mains supply and use a screwdriver to segregate the

electronic components and motor from the plastic housing. Dispose items in accordance with WEEE.

WEEE Statement

This product may not be treated as household waste. Instead it should be handed to an appropriate
collection point for the recycling of electrical and electronic equipment. For more detailed information
about the recycling of this product, please contact your local council office or your household waste
disposal service.

2

Installation Preparation

CV3 Cover Ø 197mm

126mm

Ø 99mm

4

8mm

6

8mm

Ø 178mm

5

8mm

Installation Preparation

Electrical installation must only be carried out by

qualified Electrician and in accordance with the

a
current editions of Building Regulations and
BS7671: IEE Wiring Regulations.

The Unity CV3 fan is supplied with a 100mm
nominal spigot for connection of ducts for
installation - 100mm diameter rigid duct should
be used to provide the best performance levels
required for compliance with Building Regulations.

Technical Services can be contacted on

Main body

[phone] should you have any
questions in respect of this.

Outer cover

Preparing your fan for installation

Upon removal from packaging, rotate ‘outer cover’
anticlockwise until retaining clips are released and
place the cover to one side.

Loosen retaining screw in main body cover and
rotate anticlockwise to remove.

The unit can be installed on a wall, window (with separate adaptor kit) or ceiling mounted and ducted.

Wall Preparation

Ceiling Preparation

Ø = 105mm

Window Preparation

Retaining
screw

Ø = between 102mm - 117mm
(to suit ducting dimensions)

Allow a clearance of 50mm from
wall/ceiling edges around the fan

Cut the duct to depth of the
plasterboard or tiled wall
with slight fall to exterior
(Make provisions for cable).

Fill in any gaps with mortar
or foam and make good
internal and external walls.
Make sure that ducting
retains its original shape.

Cut an
opening
through the

.

ceiling for
the fan and
electrical
cable.

Cut circular hole
within window pane.

• minimum Ø = 118mm

• maximum Ø = 130mm

X

Ø

See instructions

X = 65 Ø = 105mm

with window kit for
installation details.

3

Installation

Installation

STEP 1

Connect ducting to the spigot on
the back of the Unity CV3

Note: If using flexible ducting,
ensure this is pulled taut (to a
min. 90% stretch capacity)
between fan and termination

STEP 2

Loosen retaining screw until
you can rotate main body
cover of the fan anticlockwise
to ‘unlock position’ and
remove cover

Lock position Unlock position

Retaining screw

4