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Download (PDF 3.9 MB) - Bosch Thermotechnology

Download (PDF 3.9 MB) - Bosch Thermotechnology

4 | Key to symbols and

4 | Key to symbols and safety instructionsDANGER: Risk of personal injury or death from explosion!▶ Work on gas components may only be carried out by a trained andcertified installer or service company.▶ Appliance installation, the connection of gas and vent piping, initialcommissioning, electrical connections, and service and maintenancemust only be carried out by a trained and certified installer or servicecompany.DANGER: Risk of personal injury or death from fire!▶ Do not use flammable or combustible material in the boiler room.▶ It is recommended not to store any items within 16 inches (415mm)of the applianceCAUTION: Appliance damage from contaminated combustion air!▶ Keep the combustion air free of corrosive substances, e.g.halogenated hydrocarbons from painting operations or beautysalons.▶ Keep combustion air free from dust and lint, e.g. from laundry oragricultural operations.▶ If clean room air is not available, fresh outdoor combustion air must beprovidedDANGER: Risk of personal injury or death from electric shock.▶ Before removing the front panel, disconnect the heating system fromthe electrical power supply by shutting off the emergency shutoffswitch or the heating system circuit breaker.▶ It is not enough to switch off the control panel. Power to the panelmust be disconnected! Ensure that the power is not restoredunintentionally by following proper lock out/tag out procedures.▶ Only qualified electricians are permitted to carry out electrical work.DANGER: Safety devices!▶ Never shut off safety valves!▶ Hot water may escape from the safety valve at any time when theappliance is running.DANGER: Risk of personal injury or death after a flood!▶ Do not attempt to operate an appliance if any part of it has been underwater.▶ An appliance that was subject to flooding must be replaced.NOTICE:▶ Upon completion of the installation, these instructions should behanded to the owner and operator of the appliance.▶ The installer must instruct the owner and operator on the functionalityof the components and the proper operation of the boiler and theheating system.▶ The boiler must be serviced annually including the main burner,ignition burner, the entire venting system, and the combustion airsupply. All parts that show any signs of damage or corrosion must bereplaced.6 720 805 218 (2013/02)SB625WS/SB745WS

Product Description | 52 Product DescriptionThe high efficiency SB Series boilers are designed to condense fluegases through a unique three-pass construction for installation in amechanical room. While they are designed primarily for central heatingpurposes, in conjunction with a suitable storage tank they can also beused to produce domestic hot water.All parts that come into contact with the combustion gases are madefrom titanium stabilized stainless steel to ensure maximum resistance tothe corrosive action of acid condensation.The boiler has been designed with the combustion chamber at the topand the smooth pipe tube bundle at the bottom to optimize heatexchange and to maximize the condensing effect.The boiler has a high total water content which is differentiallydistributed between its top and bottom sections. This hydraulic featureallows outgoing water to reach the set temperature quickly whilemaintaining the condensing effect and the water heating time around thetube bundle for as long as possible.The boilers feature lightly pressurized combustion chambers for asmoother burner action, and high temperature resistant, stainless steelturbulators inside the tube bundle for maximum burner efficiency.The boiler body is thoroughly insulated with a layer of high density glasswool.The paint finished external paneling is also internally insulated with alayer of high density glass wool.The boiler’s front door and the flue gas chamber can be openedcompletely to facilitate the inspection, maintenance and cleaning ofinternal parts and to speed up servicing in general.The front door can open in either direction and can be opened withoutremoving the burner. The door is factory fitted with hinges on the left,but these can be reversed if necessary to suit individual installations.1 2 3 4 561817716151413Fig. 1 Main components[1] Paneling[2] Heating flow outlet[3] Safety device fitting 1)[4] Heating return (high temperature)[5] Heating return (low temperature) 2)[6] Instrument for bulb/probe socket[7] Combustion chamber1) On the 1550WS model the low temperature heating return is located at the rearof the boiler.2) On the 745WS models (800-1550) the safety device fitting is flanged.[8] Flue connection[9] Flue gas box[10] Inspection port[11] Condensate drain[12] Boiler drain[13] Turbulators[14] Flue pipes[15] Second flue pass[16] Burner[17] Flame inspection window with pressure measurement point[18] Door891011126 720 805 218-01.1TSB625WS/SB745WS6 720 805 218 (2013/02)

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