Optimax 25 S Manual - Ferroli

Optimax 25 SVertical OutletThe total length in equivalent metres of the concentric flue must not exceed the maximum lengths statedin the following table, note that each bend gives rise to the stated reduction. For example, a duct =60/100 composed of 1 bend of 90° +1 horizontal metre + 2 bends of 45° + 1 horizontal metre has atotal equivalent length of 4 metres.Vertical flueingThe installation of a concentric vertical flue can be carried out as follows,Install the appliance as previously mentioned in this manual.1. Connect onto the flue assembly at the top of the appliance a concentric vertical adaptor part number1KWMA71W,2. Use the required amount of 1mtr flue extensions (part number 1KWMA56U) inserting them spigotdown ensuring the seals are well lubricated with silicone grease (not supplied) and correctly locatedinto the sockets.3. If required 45° bends (Part number1KWMA64A)may be used with a resistance value of 0.5mtrseach, the flue should be routed in such awayto avoid any unnecessary deviation and thusminimise the amount of bends required.4. The termination should be made throughour concentric flue outlet (part number1KWMA83U) in conjunction with a roof slatepitched (part number 1KWMA82U)or flat roof(part number 1KWMA81U) The storm collarmust be fixed on using the three screws providedand sealed with an external grade silicone(not supplied).5. For longer flue lengths a 125mm concentricflue system is available.6. All flue installations must comply with BS5440part 1 and must only be of Fèrroli manufacture.The vertical flue must continually rise and besupported throughout its length. The fluemust be inspected whilst commissioning theappliance to ensure it is sound throughout itslength.This information is for guidance purposes andFèrroli will in no way be held responsible forincorrect installation following this guide.Roof end piece1KWMA83UAngled roof tile1KWMA82U1KWMA56U95050 950950501000 1251050max. 6 metres 60/100max. 16 metres 80/1251KWMA71WTable 2aØ mm60/100Ø mm80/1255068Maximum permissibleduct length (Horizontal)Maximum permissibleduct length (Vertical)5 m* 15 m6 m* 16 m215 185Table 2bReduction factors for bends1 m0,5 m0,5 m0,25 mfig. 10c17