Greenwood Unity CV2SVGIP User manual

Unity CV2GI / CV2SVGI
Decentralised Mechanical Extract Ventilation (dMEV)
Installation Instructions
Commissioning Data:
To be completed by the
Commissioning Engineer.
Refer to User / Homeowner Guide
also supplied.
Notice:
For Wall Mounting:
To ensure IPX5 install fan with
orientation arrows facing upwards.
(See section 2.3, figure 5)

2
Contents
Page
1.0 General Description / hysical Specification 3
2.0 Installation Instructions 5
2.1 General Preparation 5
2.2 Positioning / Application 5
2.3 Wall Mounting 6
2.4 Ceiling Mounting 7
2.5 Ducting Guidelines 8
2.6 Electrical 9
2.7 Wiring 10
2.8 SELV Box Installation 11
2.9 On Site Commissioning / Set Up 13
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.

3
Overview
Unity CV2GIP / CV2SVGIP 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.
The concept revolves around ‘one product’, which has been designed to
be flexible in application (ceiling and wall installations) and to meet the
performance requirements of all ‘wet’ rooms within a dwelling. The Unity
CV2GIP / CV2SVGIP features new Greenwood TimerSMARTTM and
Greenwood HumidiSMARTTM technology (fully automatic integral delay /
over-run timer and humidity functions) which monitor the homeowners’
environment. For enabling / disabling features see section 2.8 On Site
Commissioning.
A boost speed facility is provided to increase the ventilation rate during
peak times, helping to provide a comfortable indoor environment. Either a
‘switch-live’ light switch or an alternative boost switch (not supplied)
should be wired to provide this operation (see section - 2.6 Electrical).
This product features on PCDB, part of the process will require the
Installation Checklist for dMEV products to be completed and submitted
to building control, available at www.ncm-pcdb.org.uk, along with all other
relevant paperwork.
Record sheets for commissioning information are provided; please refer to
section 4 of the User / Homeowner Guide also supplied with the product.
Packaging Includes –
Ancillary Items: 100mm round ducting or
Flat duct (110 x 54mm) or (204 x 60mm).
100mm grille & appropriate boost switch (GS2).
PFACV2 - Picture Frame Adaptor.
1.0 General Description / hysical Specification
1.1
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
1.1.6
CV2GIP
1 x Unity dMEV Unit
1 x Loose item set
1 x Installation Instructions
1 x User / Homeowner Guide
CV2SVGIP
1 x Unity dMEV Unit
1 x SELV Box
1 x Loose item set
1 x Installation Instructions
1 x User / Homeowner Guide

4
1.1.7
1.1.8
1.1.9
1.1.10
1.1.11
1.1.12
1.2
Front Side
Ø 199 mm 129.5 mm
62 mm
Ø 99 mm
Ø 178 mm
68 mm
48 mm
Warning: 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.
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.
The fan should not be sited where it would be subject to a direct heat
source in excess of 40°C.
Observe appropriate safety precautions if working on steps or ladders.
Wear eye protection when breaking out wall or window materials, etc.
The CV2SVGIP fan must only be installed by using the supplied Safety
Extra Low Voltage (SELV) controller, corresponding to the markings on
the appliance.
hysical Specification

5
Figure 1: Back Plate Screw Fixtures
General reparation
The Unity CV2GIP / CV2SVGIP 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 [phone] should you
have any questions in respect of this.
Installation of the unit should be in accordance with the current
editions of Building Regulations and BS7671: IEE Wiring
Regulations.
Electrical installation must only be carried out by a qualified
Electrician.
ositioning / Application
The unit can be installed on a wall or ceiling mounted and ducted.
The unit must be securely mounted using all four fixing holes provided
(see Figure 1).
2.1
2.1.1
2.1.2
2.1.3
2.1.4
2.2
2.2.1
2.2.2
2.0 Installation Instructions
Using No.8 screws provided,
ensure that all four fixing
points on the back plate are
securely fitted

6
2.3
2.3.1
2.3.2
123
6
45
To remove outer front cover, rotate to the
left until retaining clips are released. Then
loosen the 3 fixing screws (see Note above).
Carefully open the electronics cover until
retention hinge is fully extended.
Cut the duct to width of the plasterboard or
tiled wall with slight fall to exterior.
(Make provisions for cable).
Using the four No 8 screws, secure fan
body to the wall. The electrical cable
passes through as appropriate. Wire fan
(See wiring details).
7
Carefully close the electronics cover,
ensuring that the outer rubber seal edges
are positioned correctly back into the fan
body.
Fully tighten the 3 fixing screws until they lock to
maintain IPX5 and avoid possible hazard. To
attach the outer front cover, rotate to the right,
utilising the guidance rail, until firmly secured by
the retaining clips.
Wall Mounting
Determine the most ideal location for the unit for this installation, also
taking account of the electrical services.
Ensure there is adequate access for installation and eventual
replacement. Note: The electronics cover has been designed to retain
and hold screws, for ease, when positioning/mounting the product to a
surface.
To maintain IPX5 and avoid possible hazard,
please mount the fan with orientation symbol
arrows facing upwards.
9
Screw the protective wall grille over the
external duct opening.
8
Fill in any gaps with mortar or foam and
make good internal and external walls.
Make sure that ducting remains circular.
Ø = 117mm

7
2.4
2.4.1
2.4.2
3
4 5
To remove outer front cover, rotate to the
left until retaining clips are released. Then
loosen the 3 fixing screws (see Note above).
Cut an opening through the ceiling for the
fan and electrical cable.
Place flexible or rigid ducting over the
spigot of the fan. Fit ducting to spigot using
appropriate method. Refer to section 2.5.
8
Diagram depicting typical installation ducted
through roof soffit. If ducted via a roof vent
follow guidelines set out with the Domestic
Ventilation Compliance Guide.
1
9
Diagram depicting typical installation ducted
through roof to external wall.
Fully tighten the 3 fixing screws until they lock
to maintain IPX4 and avoid possible hazard. To
attach the outer front cover, rotate to the
right, utilising the guidance rail, until firmly
secured by the retaining clips.
7
6
Carefully close the electronics cover,
ensuring that the outer rubber seal edges
are positioned correctly back into the fan
body.
2
Carefully open the electronics cover until
retention hinge is fully extended.
X = 65 Ø = 105mm
Ceiling Mounting
Determine the most ideal location for the unit for this installation, also
taking account of the electrical services.
Ensure there is adequate access for installation and eventual
replacement. Note: The electronics cover has been designed to retain
and hold screws, for ease, when positioning/mounting the product to a
surface.
To maintain IPX4 the unit must be securely
mounted using all four fixing holes provided
(see section 2.2). Wire fan (See wiring
details).

8
Ducting Guidelines
A 100mm nominal diameter spigot is provided for connection to ducting.
Ductwork should be securely connected to fan spigot. Failure to do this
will cause unnecessary air leakage and may impair performance.
All duct connections require sealing. Where ducts are installed against a
solid structure this can be difficult to achieve. In such locations
preassembly of duct sections should be considered. This will require that
connections are permanent to ensure the seal is maintained during
installation.
If applicable, Fire dampers MUST BE FITTED in accordance with Part B
of the Building Regulations.
Rigid Ducting - Install using the least number of fittings to minimise
resistance to airflow. Where access to ducts will not be possible after
construction is complete, i.e. within floor and wall voids, consideration
should be given to permanent connection and sealing with an appropriate
non-hardening sealant, and not using duct tape to achieve connection and
sealing.
Flexible Ducting - Ensure ducting lengths are kept to minimum and
ducting is pulled taut so that it is smooth and straight. Where bends are
necessary, and where ducting is run in restricted areas, ensure the
ducting is not crushed. Connection of lengths of flexible duct must use a
rigid connector and jubilee clips or similar to ensure a long term seal is
achieved. Connection of lengths of flexible duct should not be taped-only.
The fan exhaust must terminate to external air and be protected by a
suitable wall or roof terminal. Roof terminal to have a minimum equivalent
free area of 7,500mm2.
2.5
2.5.1
2.5.2
2.5.3
2.5.4
2.5.5
2.5.6

9
Electrical
Installation or disconnection must be carried out by a qualified
Electrician and all wiring must conform to IEE Wiring or local
Regulations.
Isolate electricity supply before starting work.
The Unity CV2GIP fan is double insulated and does not require an earth.
The Unity CV2SVGIP SELV fan is a class III and does not require an earth.
A triple-pole switch having a minimum contact separation of 3mm must be
used to provide isolation for the unit.
When supplied from a 6 amp lighting circuit no local fuse is required. If
electricity is not supplied via the lighting circuit, a localised 3 amp fuse
must be used.
The recommended alternative ‘switch-live’ switch for use is the -
GS2 switch.
The fan must not be mounted above or closer than 1m to the
cooker where it could be affected by excessive heat or moisture.
2.6
2.6.1
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
GS2 Remote Switch ositions Function
Trickle (I) Fan running at trickle speed
Boost (II) Fan running at boost speed
II
I

10
Wiring Details
Strip cable to correct lengths as shown in Figure 2 - Diagram 2.a.
Insert cable through cable entry point (A), and then clamp cable
using the cable clamp (B).
Push the wires into the terminal block (C) as per wiring diagram
(see section 2.7).
Tighten screws of the terminal connection.
Note: A facility to park the earth cable has been provided (D); as the fan
is double insulated no connection to earth is required.
2.6.8
(A)
(B)
(D)
(C)
Diagram 2.a.
(C)
Figure 2 - Wiring Details
230V
(C)
SELV