READ ALL INSTRUCTIONS BEFORECOMMENCING INSTALLATIONS

l Warning: This appliance can be usedby children aged from 8 years andabove and persons with reducedphysical, sensory or mentalcapabilities or lack of experience andknowledge if they have been givensupervision or instruction concerninguse of the appliance in safe way andunderstand the hazards involved.Children shall not play with theappliance.

l Where an open-flued oil or gas-fuelledappliance is installed, precautionsmust be taken to avoid a back-flow ofgases into the room.

l When installing wall mounted fans,ensure that there are no buried cablesor pipes in the way. Itis recommended that this fanis mounted >1.8m above floor level.

l The fan should not be sited where itwould be subject to a direct source ofheat in excess of 40˚C.

l Observe appropriate safetyprecautions if working on steps orladders. Wear eye protection whenbreaking out wall or window materials, etc.

l A clearance of 75mm to be allowedon at least one side of the fan forthe removal of the internal grille.

l Always isolate fan from mains supplybefore cleaning. Do not use solventsto clean this fan.

l Cleaning and user maintenance shall

OPERATIONB/BW Models. Single speed. Operation by pull cord, remoteswitch, light switch or remote sensor. Pull cord complying toBS EN 60669-1:2000.

A Models. Dual speed, continuously running at trickle speed.Operation between trickle/normal speeds by pull-cord/light/remote switch or sensor.

HT/HTW Models. Single speed. Automatic and manualoperation. Unique manual override with automatic switch-off. An integral humidity sensor will operate the fan whilst the RH(Relative Humidity) exceeds the pre-set activation point. TheRH is then reduced back to the activation point. The linkedoverrun timer continues to operate the fan for the pre-set timeperiod to ensure the RH level is further reduced within theroom to prevent ‘hunting’. The sensor also features a set-backfacility helping to eliminate night-time running.Manual operation of the fans pull cord (contact switch) willactivate the fan for the pre-set overrun timer period. If wiredinto a room light or remote switch the fan will operate whilstthe room light or switch is on. Once the fan is switched off theoverrun timer will run for the pre-set time period.Humidistat adjustable 50 – 90% RH @ 20˚ C.Adjustable overrun timer (up to 30 mins).

T/TW Models. Single speed. Unique manual override withautomatic switch off. Operation by pull cord, light switch orremote switch.Integral pull cord will activate the fan for pre-set overrun timeroperation. If wired into room light or remote switch the fan willoperate whilst the switch is on. Once the fan is switched offthe overrun timer will run for the pre-set time period.Adjustable overrun timer (up to 30 mins).

SVIHT Models (Safety Extra Low Voltage). Singlespeed, automatic and manual operation. Unique manualoverride with automatic switch-off. The fans integral humidity sensor will operate the fan whilstthe RH exceeds the pre-set activation point. When the RH isreduced back to the activation point the linked overrun timercontinues to operate the fan for the pre-set time period. Thisfeature ensures the RH level is further reduced within theroom to prevent ‘hunting’. In addition the sensor also featuresa set-back facility to help eliminate night-time running.Manual operation of the fans pull cord (contact switch) willactivate the fan for the pre-set overrun timer period. If wiredinto a room light or remote switch the fan will operate whilstthe room light or switch is on. Once the fan is switched offthe overrun timer will run for the pre-set time period.Humidistat adjustable 50 – 90% RH @ 20˚ C. Adjustable overrun timer (up to 30 mins).

SVIT Models (Safety Extra Low Voltage). Singlespeed. Operation by pull cord, light switch or remote switch.Integral pull cord will activate the fan for pre-set overrun timeroperation. If wired into room light or remote switch the fan willoperate whilst the switch is on. Once the fan is switched offthe overrun timer will run for the pre-set time period.Adjustable overrun timer (up to 30 mins).

Installation Instructions for RF90, SF90 Fansfor Bathroom and Toilets

SF90RF90

D

E

J

C B

A

F

Remove 1-piece front cover (A). Removeinternal cover (B) and power unit (C).

Cut a 108mm diameter hole in the window.

Fix mounting plate and external grille (J) towindow with the screws provided.

WINDOW MOUNTING FOR SF90 1

4

2

Fit seal (E) around the hole.

3

Replace power unit (C) ensuring no wires aretrapped before securing unit. Replace internalcasing (B) and front cover (A).

6

Wire fan into terminal block located on fancase back plate (D) as required. (see backpage for wiring details).

5

not be made by children withoutsupervision.

l The RF90 product has a uniquefeature which will allow the filter to beremoved and replaced from both sidesavoiding any problems when installingthe unit hard up against a wall. Forfilter removal please allow a traveldistance of 250mm to allow the filterto be fully retracted from the unit.

l SF90SELV fans shall only be installedby using the supplied Safety Extra LowVoltage (SELV) controller.

l If product comes with a pull cordplease do not remove the break-linkfound within casing.

l To disassemble the unit, disconnectfrom mains supply and use ascrewdriver to segregate the electronic components and motorfrom the plastic housing. Disposeitems in accordance with WEEE.

l WEEE StatementThis product may not be treated ashousehold waste. Instead it should behanded to an appropriate collectionpoint for the recycling of electrical andElectronic equipment. For more detailed information aboutthe recycling of this product,please contact your localcouncil office or your householdwaste disposal service.

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Installation Instructions for RF90, SF90 Centrifugal Fans for Bathroom and ToiletsInstallation Instructions for RF90, SF90 Centrifugal Fans for Bathroom and Toilets

BC

DG

H

124mm

AI

F

Unclip front cover (A), withdraw screw fromcorner of filter frame (I), Remove internalcover (B) and power unit (C).

Cut an opening through the wall for ED1 duct(Ø110mm). Cut an opening in the internal wall190 x 165 x 150mm deep to accept fan case(D) and allow necessary space to fix the fancase with mortar or foam.

Feed flexible cable through conduit entry holein the fan case. Make sure knock-out hole forcable has smooth edge to avoid damage tosupply cable insulation.

WALL MOUNTING FOR RF90

1

4

Fix the fan case direct to duct pipe (G) afterfitting rubber seal to fan outlet on fan case.Make sure that the fixing holes in the ductingare at 45˚ before securing ducting.

DG

5

6

165mm

190mm

150mm

2

ED1 Ø = 125 mm

Cut the ED1 duct pipe (G) to width ofthe plasterboard or tiled wall less 124mm,make good with slight fall to exterior. (Makeprovisions for cable).

X – 124mm

Ø

X

3

ED1 Ø = 125 mm

Secure fan case by using No. 8 screws,through top and bottom of fan case.

Replace power unit (C) ensuring no wires aretrapped before securing unit. Replace internalcover (B). Replace fixing screw at corner offilter frame (I), insert filter (F) and fit frontcover (A).

DO NOT OVERTIGHTEN SCREWS.

8

Fill the gap with mortar or foam. Make goodon external wall. Wire fan as required (Seewiring details on back page).

7

9

Remove 1-piece front cover (A). Removeinternal cover (B) and power unit (C), loosenbut do not remove central screw.

Cut an opening through the wall for ED1 duct(Ø125mm).

Make sure that the fixing holes in the ductingare at 45˚ before securing ducting.

1

45˚

4

Fill in any gaps with mortar or foam.

5 6

2

Cut the duct pipe (G) to width of theplasterboard or tiled wall with slight fall toexterior. (Make provisions for cable).

X

Ø

X

3

Ø = 125 mm

Make good internal and external walls.

Using No 8 screws, secure fan case backplate (D) to the wall using the pre-pluggedholes. Wire fan as required (See wiring detailson back page).

8

Mark and plug wall for fan casing back plate.Fit rubber seal to fan outlet on fan casingback plate (D) before fixing the fan casedirect to duct pipe (G).

7

9

A protective wall-grille (H) may be used on theexternal opening.

Replace power unit (C) ensuring no wires aretrapped before securing unit. Replace internalcasing (B) and front cover (A).

10

A protective wall-grille (H) may be used on theexternal opening.

GH

DC

BA

F

WALL MOUNTING FOR SF90

BC

D

AI

F

Cut an opening through ceiling190 x 165mm for fan case.

Screw fix fan case to timber support, usingNo.8 screws, after fitting rubber seal to fanoutlet on fan case. Wire fan as required (Seewiring details on page 4).

CEILING MOUNTING FOR RF90

1

124mm

12mm

4

8

2

Construct timber support plate between twojoists (See diagram). Cut holes for outlet pipe (120mm dia.) andelectrical cable. (refer to template supplied).Mark internal fixing holes, feed cable throughentry hole in fan case. Make sure knock-outhole for cable has smooth edge to avoiddamage to supply cable insulation.

3

7

Fit required ducting to fan outlet and vent tooutside grille.

6

Remove 1-piece front cover (A). Removeinternal cover (B) and power unit (C), loosenbut do not remove central screw.

Cut an opening through ceiling120mm diameter for fan case.

Screw timber support plate to the joist,ensuring that it is flat against theplasterboard.

1

4

Feed cable through entry hole in fan casingback plate (D) and wire fan as required (Seewiring details on page 4).

5

2

Construct timber support plate between twojoists (See diagram).

Cut holes for outlet pipe (120mm dia.) andelectrical cable. (refer to template supplied).

Feed cable through entry hole in timbersupport plate and through ceiling. Make sureholes for cable has smooth edges to avoiddamage to supply cable insulation.

12mm

3

DC

BA

F

CEILING MOUNTING FOR SF90

5

Alternatively use the simple “screw fixing’.Push the casing through cut hole in ceiling.Turn both fixing arms outways (See diagram).

Screw casing to ceiling, making sure fixingarms are secure to the ceiling. Wire fan asrequired (See wiring details on page 4).

Secure fan casing back plate (D) to theceiling using screws.

6

Replace power unit (C) ensuring no wires aretrapped before securing unit. Replace internalcover (B). Replace front cover (A).

DO NOT OVERTIGHTEN SCREWS.

7

A protective wall-grille may be used on theexternal opening.

9

A protective wall-grille may be used on theexternal opening.

8

Fit required ducting to fan outlet and vent tooutside grille.

Unclip front cover (A), withdraw screw fromcorner of filter frame (I), Remove internal cover(B) and power unit (C).

Replace power unit (C) ensuring no wires aretrapped before securing unit. Replace internalcover (B). Replace fixing screw at corner offilter frame (I), insert filter (F) and fit frontcover (A).

DO NOT OVERTIGHTEN SCREWS.

9

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Installation Instructions for RF90, SF90 Centrifugal Fans for Bathroom and Toilets

SENSOR/TIMER ADJUSTMENTS

2

4

1Note: Switch off the mains electricity before adjusting controls.1 For RF90 fans, unclip front cover (A), slide

filter out (F), Remove internal cover (B).The sensor/timer adjustments are situatedon the front face of the power unit.

2 For SF90 fans, remove 1-piece front cover(A). Remove internal cover (B). The sensor/timer adjustments are situatedon the front face of the power unit.

3 The sensor/timer are pre-set but may beadjusted by rotating the knobs between + and - . Rotate clockwise to increase and anti-clockwise to decrease time or humiditysensor sensitivity.

4 For RF90 fans, reassembly is the reverse ofdismantling.

5 For SF90 fans, reassembly is the reverse ofdismantling.

1 2

1 2

WIRING DETAILS FOR RF90

WIRING DETAILS FOR SF90

Installation or disconnection must be carriedout by a qualified Electrician and all wiringmust conform to IEE Wiring or localRegulations.

Isolate electricity supply before starting work.

l The fans are double insulated and do notrequire an earth connection.

l When supplied from a 6 amp lighting circuitno local fuse is required.

l The fan must be connected to a switchedconnection unit having contact separation ofat least 3mm at each pole. For single unitsuse 3 amp fuse.

Specification: 220-240V~50 Hz.

Consumption: 20W (AC Only)30W (SELV)Trickle speed (A) 10W

Cable Size: 2 or 3 Core 1mm2Max.

WIRING DIAGRAMS

Fan TerminalRemote /Light switch

Light optional

N

L

N

L

L1

Fuse

Double pole isolating switch

N

L

L1

Fan Term inalFuse*

Double pole isolating switch

X

Light switch

L

NLight optional

L1

N

L

Fan Terminals

Fuse

Double pole isolating switch

N

L

15.10.034 Issue 4 December 2015

The fan & filter may be cleanedusing a brush or damp cloth. DONOT IMMERSE THE FAN UNIT INWATER. A visible check of the filtershould be made every 6 months.WARNING: Always isolate fanfrom mains supply beforecleaning. Do not use solventsto clean this fan.

TO CLEAN OR SERVICE FAN & FILTER

Wiring for remote switch/light switchB/BW Models

Fuse*

Double pole isolating switch

X

Light switch

L

N

SL

N

L

3

2

1

3

2

1

Controller Terminals

Fan Terminals

Wiring for room light and pull cordSVIT and SVIHT Models

Wiring for pull cord onlyA, B/BW, T/TW and HT/HTW Models

SVI 12 V Controller(with switched live)

With the covers and power unit removed,slide the electrical connector up and removefrom the fan case.

Electricalconnector

Strip wires and connect to the connectorblock. NOTE: Wires must be fixed underscrew head not under isolator contact.

3

Replace the electrical connector by sliding itin and down into the fan case. Replace powerunit and covers ensuring no wiring istrapped.

With the covers and power unit removed,slide the electrical connector up and removefrom the fan case.

Clip wire into wire grips

1

Clip wire into wire grips (see diagram).Replace electrical connector to fan casing.Replace power unit (C) ensuring that no wiresare trapped before securing unit.Replace internal and front cover.

Strip wires and connect to the connectorblock. NOTE: Wires must be fixed underscrew head not under isolator contact.

Wiring for room light and pull cordA, T/TW, HT/HTW and Continuous Models

Install SELV controller, using the two fixingholes, in a suitable location outside of theroom where the SF90SELV fan is installed.The location should be as such that air cancirculate around the SELV controller and itshould never be covered.The distance between the fan and SELVcontroller should be kept to a minimum andideally not greater than 3.0m.Remove the controller’s electrical cover.Make all connections to the connector blocks.Note: Mains cable must be fixed back to thewall using appropriate cable cleats.Replace electrical cover.Note: Do not fit more than one fan to thecontroller or connect with any other product.Maximum cable length between fanand controller:

Conductor Size Maximum length0.50mm2 1.5m0.75mm2 2.3m1.00mm2 3.0m1.5mm2 4.5m

SELV FANS ONLYTO WIRE THE CONTROLLER

Mains230 V ~ 50 Hz To Fan 12 V

AB

F

Humidity Timer

3

5

AB

AB

F

AB

Fixing Hole

Fixing Hole

Zehnder Group UK Limited

Unit 4, Watchmoor Point, Camberley, Surrey, GU15 3AD

Customer Services: 01276 408404 Web: www.greenwood.co.ukTechnical Services: 01276 408402 Email: info@greenwood.co.uk CE

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