Duet is a range of run and standby fans designed to provide extraction levels that comply with Building regulations (Document F) for bathrooms and WC's and incorporates a run on timer. All models offer automatic changeover on fan failure.Ultra quiet and particularly suitable for areas where unobtrusive sound levels are essential, Duet is available for surface, recessed or duct mounting. IP44 rated. Duet meets the requirement of Health Technical Memorandum 2025, foul extract ventilation systems 2.8. Ideal for new build and refurbishment installations.
Duet features include a backdraught shutter, LED indicators showing the status of the unit, self diagnostic check of controls before the fan will start, run and standby facility, 5-25 minute run on timer and 24 hour auto fan changeover. Suitable for ambient temperatures of up to +40°C, built-in dust filters.
Duet is suitable for use with either 100mm diameter ducting or System 50 PVCu ducting, for installations that need concealed ducting, with a minimal ceiling void of only 90mm required. System 50 also combines the advantages of being non-corrodible and nonreverberant with easy installation.
The motors are manufactured with long life self aligning sleeve bearings, impedance protected. Insulation is to Class H.
The housing and fan scroll are manufactured from high quality polymeric materials. The control circuitry is mounted within its own enclosure and the unit is rated IP44.
Adjustable Timer from 5-25 minutes, to comply with Building Regulations , Document F. 24 hour automatic duty share changeover. Any external electro-mechanical switch can be used eg. ThermoSwitch, HumidiSwitch. Double insulated appliance.
Supply voltage 220-240V/1/50Hz
Optional Remote indicator
The remote fan indicator unit provides fan status information at a convenient position remote from the main unit. (Included as standard with Duct Model). Stock Ref. No.18 00 10C
Requires 100mm circular hole in wall. Fan 1/ Fan 2 running indicators, fault indicator.
Stock Ref. No.18 05 10C
Flush-mounted model with 100mm discharge spigot. Two flush-mounted washable filter panels, Fan 1/Fan 2 running indicators, fault indicator.
Stock Ref. No. 18 06 10C
Sheet metal construction. Up to 2 inlets can be connected. 100mm discharge spigots. A remote indicator is included with this model.
Stock Ref No. 18 07 10C
The remote fan indicator unit provides fan status information at a convenient position remote from the main unit.
Stock Ref. No. 18 00 10C
Wall Fitting Kit
For use with Duet range. Hole size 115mm.
Stock Ref. No. 25 41 02 - White 25 41 00 - Brown
|Type ||Stock Ref. No. ||Remote Indicator|
Stock Ref. No.
|Amps @ 240V ||Extract Performance ||Max Watts ||dB(A) 85m³/h |
|m³/h ||l/s |
|Surface ||18 00 10C ||+ 18 00 10C ||0.25 ||122 ||33 ||35 ||Both fans running 37|
One fan running 34
|Recessed ||18 06 10C ||+ 18 00 10C ||0.25 ||122 ||33 ||35 ||Both fans running 36|
One fan running 33
|Duct ||18 07 10C ||+ 18 00 10C ||0.25 ||122 ||33 ||35 ||Both fans running 36|
One fan running 33
Single fan only performance
Manufacturers of some fluorescent/low energy lighting systems indicate that these can interfere with other electronic/timing circuits. For reliable operation of these circuits we recommend therefore that a tungsten filament light is used.
|Wall fitting kit |
|White Stock Ref. No. 25 41 02|
Brown Stock Ref. No. 25 41 00
|Air replacement grille set |
|Ivory Stock Ref. No. 56 14 01|
Brown Stock Ref. No. 56 14 00
|Quck fix 100mm wall grille |
|White Stock Ref. No. 56 35 21|
Brown Stock Ref. No. 56 35 41
|Vent-cowl for connection to 100mm rigid pipe |
|Stock Ref. No. 56 14 03 |
|100mm Flexible ducting |
|Stock Ref. No. 56 36 04 (3 metre)|
Stock Ref. No. 56 66 04 (6 metre)
|Condensation trap |
|Condensation trap for 100mm rigid duct|
Stock Ref. No. 56 35 16
For full details of system 50 components see the System 50 page.
| ||A ||B ||C ||D ||EØ ||F ||G |
|Surface ||347 ||170 ||224 ||69 ||99 ||35 || |
|Recessed ||385 ||233 ||366 ||255 ||98 ||230 ||35 |
|Duct ||366 ||233 ||230 ||36 ||98 || || |
Supply and install a Duet run and standby fan suitable for mounting in wall, ceiling or ducted applications as manufactured by
Telephone: 01293 526062.
The fan performance should meet building regulations of 30 l/s suitable for bathrooms or utility rooms.
|Features & Benefits:|
|Designed to meet Local Authority run and standby specifications. |
|Quiet operation. |
|Complies with Building Regulation (Document F) requirements. |
|Now with boost running facility. |
|Run and standby facility. |
|Self diagnostic check of controls. |
|Overrun timer as standard, remote PIR's or humidistat can be installed. |
|•||Can be ceiling mounted. |
|•||Can be used with System 50 flat duct. |
|•||The Duet Duct model includes a remote indicator. |
|•||Duty sharing fans, automatic changeover. |
|•||Built-in or remote LED indicator for fan running and fan failure. |