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4 Installation Procedure4.8.2 Vertical Flue Systemsa) Refer to Figure 4/I. Note that the flue can be installed prior to the boiler (ifdesired) because the flue support bracket supplied as an optional extra willhold the flue system in place. Install the flue system as follows:Figure 4/I:Installing a vertical flue system4321Step 1: Push the adaptor into the top half of the spigot at the top of the boiler as shownStep 2: If applicable, push any extension ducts into the elbow.Step 3: Push the roof sealing assembly over the flue terminal and slide the flue terminalassembly through the roof from outside the building. Push the terminal into the adaptor(or extension duct).Step 4: Make good the roof seal from outside the building.31
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