Twin Fans - Duct Mounted

The Helios Twin duct fans have been specifically designed for continuous ventilation in commercial buildings with internal toilets or toilets that have no opening. All units in the range have two direct drive centrifugal fans with an individual back draught shutter & separate electrical connections to the terminal, ensuring 100% standby. For noise sensitive applications the acoustically lined units (TFDA) provide the ideal solution.

Prices include VAT but exclude delivery

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Supplied with circular spigot connection. The twin centrifugal in line, single phase 240v fans with back draught shutters provide 100% stand by for toilet extract systems. Available to suit duct sizes from 125mm to 250mm and fully speed controllable. A changeover panel (accessory ACSW 2) will be required to proved the automatic changeover in the event of fan failure using current sensing or airflow switch, with visual and audible alarm.

Available models:
TFD 125mm duct size @ £480
TFD 150mm duct size @ £549
TFD 160mm duct size @ £549
TFD 200mm duct size @ £715
TFD 250mm duct size @ £881

Click on left thumbnail for a model comparison chart with further technical specifications on the right.
Downloadable Catalogue Pages & Installation Instructions.

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Acoustically lined for noise sensitive applications. Supplied with circular spigot connection. The twin centrifugal in line, single phase 240v fans with back draught shutters provide 100% stand by for toilet extract systems. Available to suit duct sizes from 125mm to 250mm and fully speed controllable. A changeover panel (accessory ACSW 2) will be required to proved the automatic changeover in the event of fan failure using current sensing or airflow switch, with visual and audible alarm.

Available models:
TFDA 125mm duct size @ £522
TFDA 150mm duct size @ £596
TFDA 160mm duct size @ £596
TFDA 200mm duct size @ £780
TFDA 250mm duct size @ £957

Click on left thumbnail for a model comparison chart with further technical specifications on the right.
Downloadable Catalogue Pages & Installation Instructions.

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Supplied with circular spigot connection. The twin centrifugal in line, single phase 240v fans with back draught shutters provide 100% stand by for toilet extract systems. Available to suit duct sizes from 315mm to 500mm and fully speed controllable. A changeover panel (accessory ACSW 2) will be required to proved the automatic changeover in the event of fan failure using current sensing or airflow switch, with visual and audible alarm.

Available models:
TFD 315mm     @ £1064
TFD 355mm A @ £1135
TFD 355mm B @ £1135
TFD 355mm C @ £1135
TFD 400mm A @ £1232
TFD 400mm B @ £1232
TFD 450mm     @ £1300
TFD 500mm     @ £1342

Click on left thumbnail for a model comparison chart with further technical specifications on the right.
Downloadable Catalogue Pages & Installation Instructions.

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Acoustically lined for noise sensitive applications. Supplied with circular spigot connection. The twin centrifugal in line, single phase 240v fans with back draught shutters provide 100% stand by for toilet extract systems. Available to suit duct sizes from 315mm to 500mm and fully speed controllable. A changeover panel (accessory ACSW 2) will be required to proved the automatic changeover in the event of fan failure using current sensing or airflow switch, with visual and audible alarm.

 

Available models:
TFDA 315mm     @ £1163
TFDA 355mm A @ £1209
TFDA 355mm B @ £1209
TFDA 355mm C @ £1209
TFDA 400mm A @ £1332
TFDA 400mm B @ £1332
TFDA 450mm     @ £1398
TFDA 500mm     @ £1473

Click on left thumbnail for a model comparison chart with further technical specifications on the right.
Downloadable Catalogue Pages & Installation Instructions.

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Automatic change over of twin fans using current sensing or via a flow switch. Duty sharing (8 selections from 3 to 24 hours), manual selection, variable overloads, visual and audible alarm and alarm output for BMS.

Protection: IP 40
Current: Max. 8 Amps
Dim. mm W 180 x H 120 x D 60

ACSW 2 - 8 amp auto change over panel  @ £219

Electronic Speed controller ESA. IND for surface mounting. See thumbnail for dimensions.

ESA  3i   3 amp electronic speed controller @ £80
ESA  6i   6 amp electronic speed controller @ £120
ESA 10i 10 amp electronic speed controller @ £253


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A quick-fix method for connecting fans to ducting, reducing vibration transmission. When installing leave a small gap between spigot and ducting. Supplied in pairs.

Sizes Available: BM 125mm to BM 315mm

Available models:
BM 125 pipe clamp @ £22
BM 150 pipe clamp @ £23
BM 160 pipe clamp @ £23
BM 200 pipe clamp @ £26
BM 250 pipe clamp @ £29
BM 315 pipe clamp @ £35

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Spigotted attenuator with 50mm insulation. Fits normal size ducting or to be fixed with pipe clamp connectors. Various sizes from 125mm to 400mm duct size.

SRSD 125/600 Spiggoted silencer @ £97
SRSD 150/600 Spiggoted silencer @ £98
SRSD 160/600 Spiggoted silencer @ £102
SRSD 200/600 Spiggoted silencer @ £106
SRSD 250/600 Spiggoted silencer @ £125
SRSD 315/600 Spiggoted silencer @ £149
SRSD 355/600 Spiggoted silencer @ £172
SRSD 400/600 Spiggoted silencer @ £184
SRSD 400/900 Spiggoted silencer @ £233  (900mm long)





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