NuAire CYFAN-C Instruction Manual

110. 05. 17. Leaflet Number 691500
CYFA -C EXTRACT FA S
230V/24V DC SELV Surface and
Semi-Rece ed Mounted Dome tic Fan
INSTALLATION AND MAINTENANCE
The EMC Directive
2014/30/EU
The Low Voltage
directive
2014/35/EU
*IPX4
The uaire CYFA -C centrifugal extract fan is a major advance-
ment and has been designed to meet the flow rates for all wet
room applications such as the bathroom, kitchen, utility and WC
etc.
The unit discharges air through a 100mm or 125mm dia. spigot which
for surface and semi-recessed mounted units exits at the rear of the
unit. The subsidiary spigot kit allows the fan to extract air through the
side of the fan via a 50mm dia. spigot.
The motor is 24V brushless DC. Bearings are sealed, self-lubricating
ball type with integral locked rotor protection.
Units are supplied with a separate transformer enclosure if fans are
required for SELV usage.
*IPX4 to EN 60335-2-80 with front cov r fitt d.
1.1 Unit Operation includes 230V to 24V
conversion, continuous or intermittent
The fan can be converted to operate as a 24V DC SELV for zone 1
and 2 applications. The fan has the option to select continuous or
intermittent operation up to a installed performance of 60 l/s.
1.2 Mounting options
The CYFAN range can be:
Surface Mounted,
Semi-Recessed Mounted, Using the optional extra Semi-Recessed
mounting frame kit suitable for 100mm and 125mm dia duct, consists of
mounting plate and mounting flange.
Window Mounted, using the optional kit.
Surface mounted with side spigot, using the optional kit
(see accessories and kits for part numbers).
1.3 Accessories/kits available for CYFA -C:
nWall mounting kit
Product Code Colour option
CYFAN-WALLKIT-W White
CYFAN-WALLKIT-BR Brown
CYFAN-WALLKIT-COT Cotwolds
CYFAN-WALLKIT-TC Terracotta
nOptional window mounting kit (Part number: CYFA -WKIT).
nOptional subsidiary spigot kit for ventilation of adjacent
bathroom/separate toilet (Part number: CYFA -DKIT).
nSemi-recessed mounting kit (Part number: CYFA -RKIT).
nOptional filter available (Part number: 7702017).
1.4 What comes in the box?
The following components are included.
SECTIO 1.0
I TRODUCTIO
CYFA -C EXTRACT FA S
Fan Body
nFan Scroll including Motor
and Removable Impeller
nControl / PSU PCB, complete
with Boost Pull Switch
nPCB Cover
nFront Grille
nFront Cover
n125mm Spigot (fitted)
nAdditional 100mm dia. Spigot
n2 off 100mm Back Draught Spigot
n2 off 125mm Back Draught Spigot
n24V Transformer Enclosure
Fixing Kit
n8 off No6 x 3⁄4inch Pozi
Pan Screw
n6 off No6 x 1⁄2inch Pozi
Pan Screws
n2 off No8 x 3⁄8inch Pozi
Pan Screws
n3 off Cable Clamps
n1 off Shutter Spring
n3 off Off nylon spacers
0inch 12
Important
Warning: Isolat from pow r supply b for r moving any cov rs.
During installation/maint nanc nsur all cov rs ar fitt d
b for switching on th mains supply.
This applianc can b us d by childr n ag d from 8 y ars and
abov and p rsons with r duc d physical, s nsory or m ntal
capabiliti s or lack of xp ri nc and knowl dg if th y hav b n
giv n sup rvision or instruction conc rning us of th applianc in
a saf way and und rstand th hazards involv d. Childr n shall not
play with th applianc . Cl aning and us r maint nanc shall not
b mad by childr n without sup rvision.
Pr cautions must b tak n to avoid th back-flow of gas s into
th room from th op n flu of gas or oth r fu l-burning
applianc s.
M ans for disconn ction must b incorporat d in th fix d wiring
as shown in th wiring diagram in accordanc with IEE wiring or
national wiring rul s.
CAUTION: In ord r to avoid a hazard du to inadv rt nt r s tting
of th th rmal cut-out, this applianc must not b suppli d
through an xt rnal switching d vic , such as a tim r, or
conn ct d to a circuit that is r gularly switch d on and off by
th utility.
Nuaire: A Trading Division of Polypipe Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NA
T: 029 2088 5911 F: 029 2088 7033 E: [email protected] W: www.nuaire.co.uk

CYFA -C EXTRACT FA S INSTALLATION AND MAINTENANCE
210. 05. 17. Leaflet Number 691500
1.6 Optional window Kit Dimensions (mm)
1.5 Fan Unit Dimensions (mm)
208
207
179
137
Front view
Top view
124 dia.
99 dia.
201
Back view
Side view
SECTIO 1.0
I TRODUCTIO
CYFA -C EXTRACT FA S
48.0
Window thickness
202 x 179
150.0
207 x 208
Index
Section 2 – Unit Preparation Page 3
nSpigot Change
nFitting back draught shutter
n230V to 24V conversion
nAll Wiring Diagrams
Section 3 – Fitting the Product Page 6
Section 4 – Setting the Product to work Page 12
nDefault settings
nPart F Flow rates
nAir flow adjustment (Inc Controls label)
nContinuous and Intermittent switch
numidity switch
nRun on timer
Section 5 – Terms and Conditions Page 12
nWarranty
nService enquiries
nTechnical Support contact number
Surface Mounting - page 6
nRequired Tools
nProcedure
Semi Recessed
Mounting - Page 7
nRequired Tools
nProcedure
Window Mounting - Page 8
nRequired Tools
nProcedure
Surface Mounting with
side spigot - Page 10
nRequired Tools
nProcedure

2.1 How to change the spigot size
The CYFAN-C is fitted with a 125mm dia. spigot, if a 100mm dia.
spigot is required follow the following steps.
nRemove the front cover and grille
nRemove fan scroll from fan casing (Do not disconnect wiring)
nUsing a P 2 screw head driver remove 4 off No8 1⁄4inch
screws
nRemove 125mm spigot
nPlace 100mm dia. spigot into position (as shown in fig 3)
nReplace 4 off No8 1⁄4inch screws
nReplace fan scroll on fan casing
nReplace front cover and grille
Fig 1. Screws to be removed and refitted during spigot change.
2.2 Fitting back draught shutters
to the spigot
The CYFAN-C kit comes complete with back draught shutters for
100mm and 125mm spigots, however these are not fitted as
standard and should not be used when using your CYFA -C in
continuous operation.
It is also recommended that you should not fit back draught shutters
if your intermittent operation duties are below 15 l/s and for
installations other than directly through the wall application to avoid
failure of the shutters opening.
Please follow these simple steps to fit your back draught shutters if
required: It is advised to fit the shutters before installing the fan unit.
nCollect all required parts
n125mm shutters (2 off 41285) or 100mm shutters (2 off 41286)
nSpring (Part of Fixing Kit 770173)
Fit 1 shutter with the part number facing in, by placing the bottom
pin into the bottom hole, slightly deflect the shutter and then fit the
top pin into the top hole. Repeat this process for the other shutter.
Fig 2. Fit spring to the bottom of the two shutters.
2.3 Conversion from 230V to 24V
1. Unpack the fan unit, components and transformer. Ensure that
all parts listed on page 1 are present. If not please contact the
manufacturer for replacement / missing parts.
2. Place the front cover and inlet grille to one side.
3. Remove the PCB cover by removing 2 off No6 x 1⁄2inch screws.
4. Partially remove the PCB assembly from the fan casing by
placing a finger tip behind the dip switches and pulling the PCB
away from the fan casing. (see fig 3).
Fig 3. Removal of PCB cover from casing.
Continued on the following page.
CYFA -C EXTRACT FA S INSTALLATION AND MAINTENANCE
310. 05. 17. Leaflet Number 691500
O
SECTIO 2.0
U IT PREPARATIO
O
Spring.
Fan Cover. Fan Grille. Fan Scroll. Fan Casing.
Impeller.
PCB coverPCB assembly

CYFA -C EXTRACT FA S INSTALLATION AND MAINTENANCE
24V fan units must be installed in accordance with these
instructions and IEE Wiring Regulations BS7671
for SELV installations.
For good EMC engineering practice, any sensor
cables or switched live cables should not be placed within 50mm
of other cables or on the same metal cable tray
as other cables.
410. 05. 17. Leaflet Number 691500
2.3 Conversion from 230V to 24V cont.
5. Separate section 2 of the PCB from section 1 by cutting the tabs
in the positions shown. (see fig 4). Replace section 2 of the PCB
into the fan unit.
Fig 4. Separate section 1 of the PCB (Power supply 230V/24V) from
section 2 (Control PCB 24V DC) by cutting the tabs in the positions
shown with the dotted circles.
Fig 5. Section 1 of PCB will be installed into the transformer
enclosure after the 24V wiring has been completed.
2.4 Installation of Transformer Enclosure
(24 Volt units only)
The enclosure containing the transformer is intended to be mounted
out of sight (e.g. in a loft, cupboard, under floorboards etc.).
owever, if this is not possible the transformer enclosure should be
mounted as close to the ceiling, or as far from the "splash zone" as
possible (see below for definition of the splash zone).
As can be seen from the table of wiring sizes, it is advisable to place
the enclosure as close to the fan as possible to reduce the costs of
wiring and assist in installation.
‘Splash zone’
The ‘Splash Zone’ can be considered to be an area within a bathroom
or shower room where a person using the bath or shower can
effectively reach.
An arms reach is defined as 0.6 metres from the edge of the bath or
shower up to a height of 2.25 metres.
2.5 Procedure for fitting the Transformer
1. Remove the transformer cover.
2. Position the transformer base enclosure on mounting surface and
route cables through knockouts. Mark the fixing points on the
mounting surface. Secure using suitable fixings (by others).
3. Before fitting section 1 of the PCB into the transformer
enclosure connect wiring as shown in (24V wiring options).
Fit section 1 of the PCB by first slotting the bottom edge
(see fig 6) into the fixing clip inside the base of the transformer
enclosure then press on the transformer and terminal block until
the PCB clicks into place. Complete by replacing the transformer
cover using the screws provided.
4. Keep vents clear of obstruction.
Complete the installation of components by securing the PCB
cover on the fan.
ote: o earth is to be connected between transformer and fan.
Fig 6. Place section 1 of the PCB into the transformer enclosure
supplied with the fan.
2.6 Transformer installation notes for
wiring sizes
It is important to note that the size of wire used between the
transformer and the fan unit can have an adverse effect on the
units performance if the following table is not adhere to.
Mains Supply: (230V) 0.5mm sq.
Transformer to fan (24V units only)
Cable run (max. 10 metres) Cable size
Up to 2m 0.75 mm sq.
Up to 4m 1.0 mm sq.
Up to 6m 1.5 mm sq.
Up to 10m 2.5 mm sq.
SECTIO 2.0
U IT PREPARATIO CO T.
Section 2 (Control PCB 24V DC)
Motor
connection
24V SELV
output
24V SELV
input
Connection
to pull-cord
SL N L
T
Transformer
S
0
2
SL
0
24V
24V
0
SL
Mains supply
terminal block
Section 1
(Power supply
230V to 24V)
Section 1 (Power supply 230V to 24V)
Mains supply
24V SELV
output
SL N L
Transformer
Terminal block
Bottom edge of PCB.
SL
0
24V
Terminal block
Place section 1 of PCB
into the transfomer enclosure
Top fixing clip
Slot for small flat screwdriver to come from
underneath the transformer to push clip to one side
ote to installing electrician: To avoid cable insulation contact with
hot transformer, always use the knockout at PCB end.

Isolation - Before commencing work make sure
that the unit, and uaire control are
electrically isolated from the mains supply.
2.7 Wiring diagrams
Fig 7. 24V Wiring options.
CYFA -C EXTRACT FA S INSTALLATION AND MAINTENANCE
510. 05. 17. Leaflet Number 691500
SECTIO 2.0
U IT PREPARATIO CO T.
24V
0
SL
N
L
Fuse 2A
(BS 1362)
Mains
230V
50Hz
3 Pole isolator
24V SELV Wiring (via remote switch)
N
L
Fuse 2A
(BS 1362)
Mains
230V
50Hz
2 Pole isolator
24V SELV Wiring (via pull-cord)
SL
N
L
24V
0
SL
N
L
24V
0
Transformer
Box
LINK REQUIRED Note: if not fitted
fan will run at full speed only
24V
0
SL
Fan unit
(Section 2 PCB)
Transformer
Box
Fan unit
(Section 2 PCB)
2 Pole switch
Fuse 2A
(BS 1362)
N
L
Mains
230V
50Hz
Wiring for two room installation (No Run-on)
Wiring for two room installation (Using Run-on)
Fan unit
N
L
N
L
Mains
230V
50Hz
Fan unit
SL
N
L
2 Pole isolator
3 Pole isolator
Fuse 2A
(BS 1362)
2
2 Pole
switch
2 Pole
switch
SL
N
L
Optional lamp
N
L
Mains
230V
50Hz
Fan unit
Unit serving bathroom (via remote switch)
N
L
Mains
230V
50Hz
Fan unit
Unit serving bathroom or kitchen (via pull-cord)
N
L
2 Pole isolator
3 Pole isolator
Fuse 2A
(BS 1362)
Fuse 2A
(BS 1362)
F
2 Pole switch
Fig 8. 230V Wiring options. Fig 9. 230V Wiring options for two room
installation (Side spigot).

CYFA -C EXTRACT FA S INSTALLATION AND MAINTENANCE
610. 05. 17. Leaflet Number 691500
3.1 Fan installation
Installation must be completed by qualified personnel. A solid non
reverberant mounting position must be selected and passages for
ductwork from the outlet spigot, as well as electrical connection
prepared. Compatible ductwork should have already been installed.
3.2 Required tools
Drill, P 2 Screwdriver, Terminal Screwdriver and Tape Measure.
3.3 Installation procedures
Fig 10. Surface mounted on a cavity wall.
1. Unpack the fan unit and other components, and ensure that all
parts listed on page 1 are present. If not please contact the
manufacturer for replacement / missing parts.
2. Place the front cover and inlet grille to one side.
3. Remove the PCB cover by removing 2 off No6 x 1⁄2inch screws.
4. Partially remove the PCB assembly from the fan casing by
placing a finger tip behind the dip switches and pulling the PCB
away from the fan casing. (see fig 11).
Fig 11. Removal of PCB cover from casing.
5. Disconnect and remove the fan scroll from assembly and
completely remove the PCB assembly. Note: if the pull cord is
not required, remove it completely.
6. Core cut a hole through mounting surface at desired mounting
position to suit the size of the discharge spigot required,
100mm or 125mm dia.
7. Place the fan casing in the mounting position (spigot placed into
core cut hole) and use the base as a template to mark the
mounting screw hole positions (x3), remove casing once marks
are made.
8. Drill and plug (if necessary) the mounting surface.
9. Feed wiring flex through the back of the fan casing and secure
into place using cable clamps and screws provided in the CYFAN
fixing kit.
10. Secure the case to the surface (fixings supplied by others). Note:
care must be taken not to twist or distort the case whilst fitting.
Ensure the 3 spacers are used from the fixing kit (see fig 12).
11. Partually replace PCB into the fan casing and wire flex into the
terminal block (see wiring options on page 5).
Fig 12. Use cable clamp on rear of casing to secure wiring, and the 3
nylon spacers from the fixing kit to ensure the unit is not flush to the
wall. This will allow the power cable to run behind the unit.
12. Replace fan scroll assembly and plug motor into PCB, replace
PCB fully into position by pushing the dip switches.
13. Replace PCB cover by fitting with 2 off No6 x 1⁄2inch screws.
(see point 2 of the procedure).
14. Fit front inlet grille using 4 off No6 x 3⁄4inch screws found in
the fixing kit.
15. Remove rubber gasket and adjust control to required settings
(shown in section 4). Once required settings are complete and
desired airflow rate is achieved replace rubber gasket.
16. Complete the fan installation by fitting (push fit) the front cover.
SECTIO 3.0
FITTI G THE PRODUCT
SURFACE MOU TI G
Nylon spacers
(see fig 12).
Nylon spacers
Nylon spacer
Nylon spacer
Cable clamp
PCB coverPCB assembly

CYFA -C EXTRACT FA S INSTALLATION AND MAINTENANCE
7
3.4 Fan installation
ote: Semi-Recessed mounting requires the optional mounting kit:
(Part number: CYFA -RKIT).
Installation must be completed by qualified personnel. A solid non
reverberant mounting position must be selected and passages for
ductwork from the outlet spigot, as well as electrical connection
prepared. Compatible ductwork should have already been installed.
3.5 Required tools
Drill, P 2 Screwdriver, Terminal Screwdriver and Tape Measure.
Fig 13. Semi-Recessed mounting frame kit suitable for 100mm and
125mm dia duct, consists of mounting plate and mounting flange.
3.6 Installation procedures
1. Unpack the fan unit and other components, and ensure that all
parts listed on page 1 are present. If not please contact the
manufacturer for replacement / missing parts.
2. Place the front cover and inlet grille to one side.
3. Remove 4 off No8 x 3⁄8inch Pozi screws from the rear of the
unit. This allows the exterior case to be removed and disposed of.
4. Remove the PCB cover by removing 2 off No6 x 1⁄2inch screws.
Fig 14. Removal of PCB cover from casing.
5. Partially remove the PCB assembly from the fan casing by
placing a finger tip behind the dip switches and pulling the PCB
away from the fan casing. (see fig 14).
6. Disconnect and remove the fan scroll from assembly and
completely remove the PCB assembly. Note: if the pull cord is
not required, remove it completely.
7. Prepare an opening 205mm x 185mm in the mounting position.
8. Position the mounting bracket in the previously prepared
aperture so that the ends of the bracket are flush with the
surface of the wall. Secure the bracket top and bottom with
suitable fixings (by others).
9. Drill and plug (if necessary) the mounting surface.
10. Feed wiring flex through the back of the fan casing and
mounting plate.
11. Secure the case to the surface (fixings supplied by others). Note:
care must be taken not to twist or distort the case whilst fitting.
12. Partually replace PCB into the fan casing and wire flex into the
terminal block (see wiring options on page 5).
13. Replace fan scroll assembly and plug motor into PCB, replace
PCB fully into position by pushing the dip switches.
14. Replace PCB cover by fitting with 2 off No6 x 1⁄2inch screws.
(see point 2 of the procedure).
15. Fit semi-recessed mounting flange to case using 4 off No4 x 3⁄8
inch screws.
16. Fit front inlet grille using 4 off No6 x 3⁄4inch screws found in
the fixing kit.
17. Remove rubber gasket and adjust control to required settings
(shown in section 4). Once required settings are complete and
desired airflow rate is achieved replace rubber gasket.
18. Complete the fan installation by fitting (push fit) the front cover.
Fig 15. Ceiling mounting using the Semi-Recessed mounting kit.
First cut an aperture for the fan in the ceiling, cut and fit (A) timber
supports (not supplied) and fit fan as shown. ote: Remove the
shutters from the spigot if you are mounting CYFA in the ceiling.
ote: pull-cord must be removed.
1.1 Installation Procedures cont.
Fit fan grille to inner fan case
using 4 fixing screws (No 6 x 3/4").
Push fit fan cover
to fan grille.
Fix fan skirt to inner fan case using
4 of fixing screws (No4 x 3/8").
Ensure plate edge is flush
with the suface of the wall
for a flush fit.
Use 4 off M4 x 16 screws
to secure inner fan case
to the mounting plate.
Mounting plate to be
placed within previously
prepaired aperture/opening
(205mm x 185mm)
fix into place using appropriate
fixings (supplied by others).
Fan grille.
Fan motor.
Semi-recessed mounting flange.
Inner fan
case.
Fan cover.
SECTIO 3.0
FITTI G THE PRODUCT
SEMI-RECESSED MOU TI G
PCB assembly PCB cover
Mounting
Plate.
A
AAA
Ceiling.
10. 05. 17. Leaflet Number 691500
Ceiling.

CYFA -C EXTRACT FA S INSTALLATION AND MAINTENANCE
810. 05. 17. Leaflet Number 691500
3.7 Fan installation
ote: Window mounting requires the optional mounting kit:
(Part number: CYFA -WKIT).
Installation must be completed by qualified personnel.
3.8 Required tools
Drill, P 2 Screwdriver, Terminal Screwdriver and Tape Measure.
3.9 Installation procedures
3.10 Fitting the fan
1. Unpack the fan unit and window kit components, and ensure
that all parts listed are present (see page 1 and 3.11 of this
document for window kit parts. If not please contact the
manufacturer for replacement / missing parts.
2. Place the front cover and inlet grille to one side.
3. Remove the PCB cover by removing 2 off No6 x 1⁄2inch screws.
Fig 16. Removal of PCB cover from casing.
4. Partially remove the PCB assembly from the fan casing by
placing a finger tip behind the dip switches and pulling the PCB
away from the fan casing. (see fig 16).
5. Disconnect and remove the fan scroll from assembly and
completely remove the PCB assembly. Note: if the pull cord is
not required, remove it completely.
6. Feed wiring flex through the back of the fan casing and secure
into place using cable clamps and screws provided in the CYFAN
fixing kit.
7. Secure the case to the window kit. Note: care must be taken not
to twist or distort the case whilst fitting.
8. Partually replace PCB into the fan casing and wire flex into the
terminal block.
9. Replace fan scroll assembly and plug motor into PCB, replace
PCB fully into position by pushing the dip switches.
10. Replace PCB cover by fitting with 2 off No6 x 1⁄2inch screws.
(see point 2 of the procedure).
Fig 17. Use cable clamp on rear of casing to secure wiring.
11. Fit front inlet grille using 4 off No6 x 3⁄4inch screws found in
the fixing kit.
12. Remove rubber gasket and adjust control to required settings
(shown in section 4). Once required settings are complete and
desired airflow rate is achieved replace rubber gasket.
13. Complete the fan installation by fitting (push fit) the front cover.
3.11 Fitting the window kit
The window kit is designed for mounting the unit into windows 4mm to
32mm thick using a 125mm dia. hole in the glass. (see fig 18.)
Parts Checklist CYFA -WKIT Part o.
1 off Window Cover 041351
1 off Outside Clamp 041350
1 off Inner Clamp 041349
2 off Backdraught Shutter 041286
1 off Screw Kit containing 772285
Shutter Spring
Parts Checklist SCREW KIT-772285 Part o.
2 off No.8 x 1” CSK D Supascrew 691646
4 off No.8 x 1-1/2” CSK D Supascrew 680193
4 off No.8 x 1-3/4” CSK D Supascrew 691647
2 off No.8 x 2-1/4” CSK D Supascrew 691648
3 off No.8 x ¾” Panhead Pozi 180394
(Main Case to Inner Clamp)
1 off Spring 580069
Fig 18.
1. Employ a qualified glazier to cut
a hole 125mm dia in the glass or,
alternatively, replace your
window with new glass
incorporating a precut hole.
2. The outer assembly consists of a
cover complete with clamping
plate and an ‘O’ ring seal. The
clamping plate incorporates a
moulded spigot which is designed
to locate inside the 125mm dia
hole in the glass.
SECTIO 3.0
FITTI G THE PRODUCT
WI DOW MOU TI G
PCB coverPCB assembly
125mm dia.
hole in glass

CYFA -C EXTRACT FA S INSTALLATION AND MAINTENANCE
910. 05. 17. Leaflet Number 691500
SECTIO 3.0
FITTI G THE PRODUCT
WI DOW MOU TI G
3.11 Fitting the window kit cont.
3. Back draught Shutters (see fig 2 and fig 19. are clipped into Inner
clamp and the spring is fitted in the lower position.
4. Position the assembly on the outside of the glass. If only one
person is installing the fan it may be helpful to tape the assembly
to the outside glass at this stage during installation as all fixings
and assembly are completed from inside.
5. Working from inside the room with the clamp. Position this inner
clamp over the hole in the glass and and line up the 4 mounting
holes.
6. Select appropriate screws from the screws kit supplied for
mounting into different thicknesses of glass, see table below.
Should the screws foul on the back of the grille during
installation replace with the next size down. There are 2 long and
2 short screws for each thickness of glass, the shorter screws are
at the top.
7. Using four screws locate with the screw bosses in the outer
assembly, draw the inner and outer assemblies together.
Remove any tape supporting the outer assembly and continue to
draw the units together until the ‘O’ ring is compressed on the
window. Note: do not over tighten the fixing screws as this may
distort the assembly.
8. Wire unit in accordance with the appropriate wiring diagram.
A cable clamp is provided inside the case. Note: the remaining
installation procedures for Window Mounting are as the
description in section 3.10.
Window mounting Screws
Window thickness Screw size
2 off 4mm - 11mm No8 x1” CSK D
2 off No8 x1-1/2” CSK D
2 off 12mm - 21mm No8 x1-1/2” CSK D
2 off No8 x1-3/4” CSK D
2 off 22mm - 32mm No8 x1-3/4” CSK D
2 off No8 x2-1/4” CSK D
Fig 19. Spring assembly. (Also see fig 2).
Backdraught
Shutter x 2
Spring
Inner Clamp
Window Cover and
Outside Clamp Assembly
Window Inside Clamp
Backdraught Shutter x 2
Spring
Fan Skirt and
Body Assembly
180394 Pan Head Screws x 4
Window Screw
short x 2
Window 4mm to 32mm thick glass
cut 125mm dia. hole for fan
Cable entry
Window Screw long x 2
Fig 20. Window mounting using the optional window mounting kit. The window kit is designed for mounting the unit into windows
4mm to 32mm thick using a 125mm dia. hole in the glass.

CYFAN EXTRACT FANS INSTALLATION AND MAINTENANCE
10 10. 05. 17. Leaflet Number 691500
DKIT is recommended for Intermittent Extract Only.
3.10 Fan installation
Note: Surface mounting with side spigot requires the optional
mounting kit: (Part number: CYFAN-DKIT).
Installation must be completed by qualified personnel. A solid non
reverberant mounting position must be selected and passages for
ductwork from the outlet spigot, as well as electrical connection
prepared. Compatible ductwork should have already been installed.
3.11 Required tools
Drill, P 2 Screwdriver, Terminal Screwdriver and Tape Measure.
3.12 Installation procedures
Fig 21. Typical installation example of fan unit with subsidiary spigot
kit in bathroom and adjacent toilet application.
1. Unpack the fan unit and components, and the subsidiary spigot
kit. Ensure that all parts are present. If not please contact the
manufacturer for replacement / missing parts.
The subsidiary Spigot Kit incorporates:
a. A new outer fan skirt with one 50mm dia. hole in the side.
b. A new fan body with a 55mm dia. hole in each side.
c. A 50mm dia. sub spigot.
d. 3M of 50mm duct.
e. Inlet grille with filter.
f. Reduction Filter.
Fig 22. Example of a subsidiary spigot kit (Code: CYFAN-DKIT).
Note: 50mm grille available (Code: 50IG).
2. Place the front cover to one side.
3. Place the reduction filter over the grille. Secure the filter by
pressing the filter under the lugs located around the grille (see
fig 23 and 24).
Fig 25. Removal of PCB cover from casing.
SECTION 3.0
FITTING THE PRODUCT
SURFACE OUNTING WITH
SIDE-SPIGOT
Fan with spigot kit.
Inlet Grille, supplied
with CYFAN-DKIT.
3M length of duct supplied with CYFAN-DKIT
(Alternatively standard 50mm waste pipe can be used).
Subsidiary spigot kit inner
fan body with 2 spigot holes.
Subsidiary spigot kit outer
fan skirt with 1 spigot hole.
Install the 50mm dia. subsidiary spigot from
inside both the inner fan body and outer
skirt, by ensuring both lugs have been passed
through the cut-out. Turn the spigot a
quarter turn to lock.
The outer fan skirt can be rotated if
required which enables the spigot
hole to be positioned on the right
or left side to meet the application
requirements.
PCB coverPCB assembly
4. Remove the PCB cover by removing 2 off No6 x 1⁄2 inch
screws.
5. Partially remove the PCB assembly from the fan casing by
placing a fingertip behind the dip switches and pulling the
PCB away from the fan casing. (see fig 25).
Fig 23. Reduction filter insert.
Fig 24. Plastic fixing lugs.

CYFAN EXTRACT FANS INSTALLATION AND MAINTENANCE
11 10. 05. 17. Leaflet Number 691500
Fig 26. Installation using 15mm deep fan mounting skirt.
See page 12 for template.
15. Core cut centre and drill and plug mounting holes.
16. Choose one of the four cable entries and carefully trim out.
Unit fixing holes
Wall fixing
holes
Cable cut-outs
Wall fixing
holes
6. Disconnect and remove the fan scroll from assembly and
completely remove the PCB assembly. Note: if the pull cord is not
required, remove it completely.
7. If using surface mounted wiring the 15mm fan skirt may be used,
see point 13 onwards.
8. Core cut a hole through mounting surface at desired mounting
position to suit the size of the discharge spigot required, 100mm
or 125mm dia.
9. Place the fan casing in the mounting position (spigot placed into
core cut hole) and use the base as a template to mark the
mounting screw hole positions (x4), remove casing once marks are
made.
10. Drill and plug (if necessary) the mounting surface.
11. Feed wiring flex through the back of the fan casing and secure
into place using cable clamps and screws provided in the CYFAN
fixing kit.
12. Secure the case to the surface (fixings supplied by others). Note:
care must be taken not to twist or distort the case whilst fitting.
13. Partially replace PCB into the new fan casing and wire flex into
the terminal block (see wiring options on page 5). (Go to point
19).
14. Utilizing the fan skirt.- Using the template on page 12 mark out
the position of the spigot hole, (depending on spigot size chosen),
and the four mounting holes.
SECTION 3.0
FITTING THE PRODUCT
SURFACE OUNTING WITH
SIDE-SPIGOT
17. Secure skirt to wall (fixings supplied by others). Note: use wood
screws not countersink screws to avoid distorting the skirt.
18. Feed cable through skirt and offer up fan case to skirt. Feed cable
through unit and secure unit to skirt using 4x No6x1/2 inch screws
provided.
19. Replace fan scroll assembly and plug motor into PCB, replace
PCB fully into position by pushing the dip switches.
20. Replace PCB cover by fitting with 2 off No6 x 1⁄2 inch screws.
(see point 2 of the procedure).
21. Fit front inlet grille with reduction filter fitted using 4 off No6 x
3⁄4 inch screws found in the fixing kit.
22. Remove rubber gasket and adjust control to required settings
(shown in section 4). Once required settings are complete and desired
airflow rate is achieved replace rubber gasket.
23. Complete the fan installation by fitting (push fit) the front cover.
3.13 Fan Setting
The unit should be configured for intermittent use. To achieve 17L/s
through the CYFAN front grille, and 6L/s through the subsidiary spigot
the boost speed control should be set approximately to the 11 O’clock
position.

12
4.1 Default setting
As a default CYFA -C units are set as follows:
nIntermittent setting – fan will only operate from pull-cord or
switched live to boost flowrate
nContinuous running (background ventilation) – OFF
nHumidity sensing – OFF
nAir flow rate (boost) – 15 l/s
nRun-on timer (from switched live only) – 1 min
4.2 Building regulations Part F 2010
flowrates
Room Intermittent extract Continuous extract
Minimum rate Minimum Minimum
high rate low rate*
Kitchen 30 l/s adjacent to hob; 13 l/s 8 l/s
or 60 l/s elsewhere
Utility room 30 l/s 8 l/s 6 l/s
Bathroom 15 l/s 8 l/s 6 l/s
Sanitary 6 l/s 6 l/s 6 l/s
accommodation
*Recommended values, please refer to Part F for further information
4.3 Continuous/intermittent switch
Continuous – fans running to provide background ventilation.
The amount of airflow can be set between 6 to 30 l/s.
Operating the pull cord or remote switch will boost the fan to the
adjustable set point available between 8 to 60l/s.
Intermittent – fan does not operate continuously but only when the
pull cord or remote switch is activated. The amount of airflow is
adjustable from 8 to 60 l/s.
4.4 Humidity Tracker Switch
The default setting is off. Switching to ‘on’ will enable the unit to
sense the humidity in the room. The fan will switch itself on when
the humidity rises above 60% and will slowly speed up as the
humidity rises. For example:
CYFA -C EXTRACT FA S INSTALLATION AND MAINTENANCE
10. 05. 17. Leaflet Number 691500
SECTIO 4.0
SETTI G THE PRODUCT
TO WORK
Relative Intermittent Intermittent
Humidity Boost Set at 60l/s Boost Set at 30l/s
60% 20 l/s 10 l/s
70% 30 l/s 15 l/s
80% 40 l/s 20 l/s
90% 50 l/s 25 l/s
100% 60 l/s 30 l/s
Fan Failure
Boost
Humidity
Fan Run
Humidity
off/on
Continuous /
intermittent
operation
6 30
15
Continuous
(l/s)
Intermittent/
boost (l/s)
60
30
15
30
15
1
Run-on
(mins)
8
Fig 25. View of PCB assembly control cover and functions.
SECTIO 5.0
TERMS A D CO DITIO S
4.5 Run-on timer
The run-on timer is adjustable from 1 to 30 mins and can operate
off a remote switch (e.g. bathroom light switch).
4.6 Airflow adjustment
The unit adjustment dials have been set for a unit that has been
installed directly through a wall and with a 125mm spigot. If the
100mm spigot is used and resistance is placed on the fan (long
duct runs) the airflow should be checked using an appropriate
measuring instrument.
5.1 Warranty
The 5 year warranty starts from the day of delivery and includes parts and
labour for the first year. The remaining period covers replacement parts
only.
This warranty is void if the equipment is modified without authorisation, is
incorrectly applied, misused, disassembled, or not installed, commissioned
and maintained in accordance with the details contained in this manual and
general good practice.
The product warranty applies to the UK mainland and in accordance with
Clause 14 of our Conditions of Sale. Customers purchasing from outside of
the UK should contact Nuaire International Sales office for further details.
5.2 After Sales
For technical assistance or further product information, including spare
parts and replacement components, please contact the After Sales
Department.
Technical Support
02920 858 400