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3 Installation RequirementsFigure 3/E: Typical System Design (System Boiler - CH Only)3.5 Central Heating Systema) These appliances are designed for connection to sealed central heating watersystems. Refer to Figure 3/B - 3/E for typical system designs.b) A sealed system must only be filled by a competent person. A filling loop issupplied as part of the installation kit, therefore no special connections areneeded within the system. Instructions for filling the system using the fillingloop are supplied in Section 5.c) The available pump head is given in Figure 3/F.Figure 3/F: Available Pump HeadResidual height in mbarA Stage 1B Stage 2Volume flow in litres/houra) An automatic heating bypass is fitted within the appliance.b) The following paragraphs outline the specifications of the items fitted to the boiler.17
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