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. 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 100mm diameter ducting or flat ducting, for installations that need concealed ducting, with a minimal ceiling void of only 90mm required.
Motor
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.
Product Specification
Built In Controls
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
Controller
Optional Remote indicator
The remote fan indicator unit provides fan status information at a convenient position remote from the main unit. Stock Ref. No.18 00 10C
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.
| Type | Stock Ref. No. | Remote Indicator Stock Ref. No. | Amps @ 240V | Extract m³/h | Performance l/s | Max Watts | dB(A) 85m³/h |
|---|
| 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 |
Typical Specifications
Supply and install a Duet run and standby fan suitable for mounting in wall, ceiling or ducted applications as manufactured by
Vent-Axia Ltd
Fleming Way
Crawley
West Sussex
RH10 9YX
Telephone: 0844 056 0590
The fan performance should meet building regulations of 30 l/s suitable for bathrooms or utility rooms.
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