flue diltution
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r r Flue Dilution Fans AIRFLOW SPECIALISTS IN AIR MOVEMENT TECHNOLOGY SINCE 1955

EDILUTIONFANSIMPROVED GBDF MK5 SAFETY - NEW Differential Pressure Safety Switch for boiler shut down in the event of fan failure or blocked flue. Օ SIMPLE - NEW electrical connections, designed with the installer in mind. FLEXIBLE - siting of boilers within new or refurbished plant rooms. Օ ELIMINATES - unsightly external flues; and the need for expensive installation or refurbishment of internai flues. EFFICIENT - and quiet centrifugal fans capable of overcoming System rթsistance in flue duct runs. HIGH LEVELS of protection with the use of stainless steel casings on enhanced corrosion...

IMPROVED GBDFMK5 TIONFANS Choosing the Correct Size and Type of Fan Where possible there should be at least 2 mtres of flue ducting from the fan to the outlet. To ensure a maximum of 1 % co2 content at the outlet, the volume flow rate of diluted flue gases necessary for a given boiler can be calculated as follows: Flow rate in litres/s = 2.69 x rated input of boiler in kW. Where 2 mtres of discharge ducting is not possible then the calculation is: Flow rate in litres/s = 4.44 x rated input of boiler in kW. The volume flow rate provided by the fan will d訩pend on the static pressure imposed...

IMPROVED GBDFMK5 TIONFANS Condensation It is recommended that drains are incorporated into the duct Systems when condensation of the combustion products is likely to occur (see typical installation diagram). Condensation should not be allowed to collect in the fan casing Dimensions 3 / A - --------- |-1 o a il l lr .-. !-- a I F J ■0E Electrical Installation In ail classes of installation, it is essential that the pressure safety switch is connected into the supply circuit of the appliance gas valve so that the gas valve is shut off in the event of a fan failure or flue System blockage....

EDILUTIONFANSIMPROVED GBDFMK5 New for the MK5 The new MK5 range of GBDF and SSDF fans now feature: eDifferential Pressure safety Switch which will activate if fhe fan stops operating or if the duct System becomes blocked, thus shutting down the boiler. e6 or 10 Ple Plug and Socket for easy wiring and installation. New Pressure Safety Switch Easier electrical Connections ^ M ■fe ^H ^^^^^^t^^ ^^^䊊^ I^Bʋ^il»L The Range flue ^^<8m Wf ^^^^ dilution fans isavailable in 5 E^F '^^ffT .gt ^ sizes tosatisfy the dilution nV'ik^^^*" a^ˉneeds of industrial and /*$&>y&\ commerc'al boilers rated up...

AIRFLOW TM Specialists in Air Movement Technology SALESLINE 0845 330 1047 www.airflow.co.uk AIRFLOW tm Specialists in Air Movement Technology Airflow Developments Limited, Lancaster Road, Cressex Business Park, High Wycombe, Buckinghamshire HP12 3QP England Tlphone: (Int +44) (UK 0) 1494 525252 p^Z^IT^^ck G*many. Facsimile: (Int +44) (UK 0) 1494 461073 Teiefon:02226/9205-0, Teiefax: 02226/9205-11 CERTIFICATE 152 ISO9001:2000 E-Mail: info@airflow.co.uk o.s. Praha, Hoslynsk驢 520.108 00 Praha 10 - Maleoice, Czech republic. Telefon: 02-74772230 Telefax: 02-74772370 Web Site: www.airflow.co.uk...