Flue Boost 800
The Flue Boost 800 is a boxed shape centrifugal flue fan unit with in line spigots for the flue connection, a pressure switch to ensure safe operation, and plug in electrical fittings for the easy connection, all within a compact package.

Capacities and Ranges
The Flue Boost 800 will handle flue gases at up to 300 degrees C and boilers with heat outputs up to 800,000 Btu/h 235Kw (normal secondary flue temperatures of the average gas appliance working at 75% efficiency are 180 degrees C with a CO² content of 5%)

Note:- This appliance must have a draught diverter or draught stabiliser fitted within the primary flue section.

Motor Cooling
The motor is a speed controllable unit with class F windings. The bearings are maintenance free sealed ball bearings with adequate lubrication to ensure reliable operation for many years.

Connections
A plug-in electrical connector is supplied, this is a multi pin connector fitted with a five core lead, the five cores are colour coded.
Brown - permanent live
Blue - permanent neutral
Green & Yellow - earth
Black & White - switch live from thermostat to fan
Black - switch live from fan to boiler
The output supply is 220/240 volt switch live only.

Pressure Switch
The pressure switch has contacts which close with air flow and open in the event of a fan failure. Note:- The pressure switch has an interlock installed which ensures failsafe operation.

Time Delay
The fan has built in variable pre purge and post purge periods (time delay) of approximately 30 seconds to 3 minutes, this is to purge the boiler of any gases before and after the boiler firing sequence.

Installation and Maintenance
Full instructions on installation and operating come with the unit. If service or repairs are required the working parts may be removed as a sub assembly without disturbing the main case.

Finish
All surfaces in contact with the flue gases are corrosion resistant stainless steel.

Electrical Details
Volts 220/240 single phase. Input/Output.
Starting current 1.5 Amp.
Running current 0.72 Amp

Sound Level
68 dBA at 3 metres with the fan set at full speed.

Inlet & Outlet Spigot Diameter
244mm

Flue Boost chimney fans are drop shipped directly from Flue Boost to you.

Please contact us before ordering, as delivery times can be substantial during busy periods.