18Alternative double skin flue installationThis heater is a flued appliance. It must be properly connected to a fluesystem in accordance with the latest edition of the Gas Installation Code,AS 5601.If elbows are required, we recommend 45° only and no more than two inthe total flue run. There should also be a minimum of 250mm straight fluesection in between bends.If practical locate the heater in a position to minimise the need for elbows.There must be at least 1.8m of vertical before any changes in direction offlue.1. Ensure clearances to combustible have been observed. For clearancesrefer page 10.2. The centre line of the flue is 120mm to rear of appliance (excl. rearspacers).3. Carry out installation as per figure 27 (ceiling plate installation) andfigures 28 & 29 (flue installation).Cut a hole 195 x 185mm in the ceiling in line with the flue position.4. One large and two small holes in the bottom end of the lower outer fluecover locate around the flue spigot and two locating pins. Refer figure30.Note: If the ceiling has an incline, the ceiling box will need to be fitted. Theceiling box is an accessory and can be ordered from the supplier. Instal-lation instructions are supplied with the ceiling box.Alternative flue kitThe flue kit contains:4 x 900mm lengths of 75mm ø inner galvanised flue.1 x 850mm length of 170mm wide lower outer flue cover.2 x 850mm length of 170mm wide upper flue cover.1 x ceiling plate.1 x 75mm AGA approved flue cowl.Flue installation - Alternative double skin flue kit27