Bosch Condens 8300i W Installation And Maintenance Instructions Manual

Also see for Condens 8300i W: Operation manual Operation manual Installation and maintenance instructions Installation instructions

Preconditions for installationCondens 8300i W – 6721841533 (2022/12)12Allowed maximum lengthGC8300iW 35 PTable 9 Flue routing5 Preconditions for installation5.1 General notes▶ Observe all the current applicable national and regional regulationsas well as all technical rules and guidelines.▶ Obtain all necessary approvals (gas supplier, etc.).▶ Consider the requirements of the building authorities, e.g. whenusing a condensate neutraliser (accessory).▶ Convert open heating systems into closed systems.▶ Do not use galvanized radiators or pipework.5.2 Installation location requirementsDANGERDanger to life from explosion!An increased and permanent ammonia concentration may lead to stresscorrosion cracking on brass (e.g.gas valves, union nuts). As a result,there is a risk of explosion from gas escaping.▶ Do not use wall mounted gas boilers in rooms where there is anincreased or permanent ammoniac concentration (e.g. livestockstables or storage room for fertilisers).▶ If contact with ammonia is unavoidable, make sure that there are nobrass parts installed in the system.Surface temperatureThe maximum surface temperature of the appliance is below 85 °C.Therefore no special safety measures are required to protect flammablematerials and fitted furniture. Country-specific regulations must beobserved.Wall structureThe wall used for installation of the appliance must be load-bearing andthe appliance must be able to rest on it over the entire surface.Protection zones in damp areasObserve all the current applicable national and regional regulations aswell as all technical rules and guidelines. These may contain additional ordeviating requirements for installations in damp areas.▶ Do not install any switches, sockets or devices with mains powersupply in the protection zones.▶ Connect device to a residual current circuit breaker.▶ Use only control units with suitable IP rating.Fig. 9 Protection zones (example)[0] Protection zone 0[1] Protection zone 1[2] Protection zone 2[2*] Without bulkhead, protection zone 2 with a width of 600 mmapplies.[A] Within a radius of 600 mm from the bath or shower5.3 Water system and pipe workPlastic pipe work• Any plastic pipe work must have a polymeric barrier with 600 mm(minimum) length of copper pipe connected to the boiler.• Plastic pipe work used for underfloor heating must be correctlycontrolled with a thermostatic blending valve limiting thetemperature of the circuits to approximately 50 °C.Primary system connections/valves• All system connections, taps and mixing valves must be capable ofsustaining a pressure up to 3 bar (300 kPa).• Bosch recommends that thermostatic radiator valves (TRVs) be usedon all radiators within the sleeping accommodation but not theradiator where the room thermostat is sited. This must be fitted withlock-shield valves and left open.• A drain point is required at the lowest part of the system.• An air vent is required at all the high points in the system.The boiler is equipped with an automatic internal by-pass.Sealed primary systemDo not use artificially softened water to fill the CH system.Do not use galvanised pipes or radiators.• The CH sealed system must be filled using an approved filling loop orcomply with figure 10, p. 13 for system fill.Accessory Ø Maximum pipe length L[mm] [m]Ø 60/100 14Ø 80/125 290010017086-0022121 221600mm600mm600mm2250mm2250mm2*AAA600 mm