Bosch automatic instantaneous type water heaters for use with natural and liquefied petroleum gas (flow modulated with electronic ignition) suitable for heating potable water only not approved for space heating purposes (16 pages)
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Demonstrate operation of unit to customer before leaving. Hand these instructions to customer. Failure to install this appliance in accordance with these installation instructions may void warranty In the interest of continued product improvement, Bosch reserves the right to alter these specifications without notice BISN0029 25/10/2011...
Installation Install only on an external wall, as close as possible to the most frequently used hot tap. Use a heat shield (accessory item part number 9 708 061 400) if the unit is to be installed on a combustible surface. Allow minimum air gap of 10 mm between the flue and the heat shield, (refer figure 2).
Operating instructions Open all hot water taps to expel any air prior to lighting Remove front cover by loosening the two screws at the lower rear corners of the cabinet. Check that gas and water valves are open, operate as indicated in Fig. 3 Refit front cover and tighten screws Fig.
Commissioning Gas Inlet Pressure Adjustment With the gas supply turned off, remove sealing screw from inlet pressure test point located on the right hand side of the gas section refer Fig. 4 pos.A, attach manometer. Turn on gas and light heater. Open hot water tap fully and adjust gas pressure regulator to 1.13kPa for NG or 2.60kPa for LPG.
Fault Finding. Problem Possible Cause Solution Appliance does not light No gas supply Connect to supply Blocked pilot Replace pilot injector Pilot lights but no main burner Split/Distorted diaphragm Replace Smell of gas Luminous flame Clean burner Loose gas connection Locate leak with soap solution Yellow flame Burner venturi blocked...
Where uncertainty exists concerning water quality, intending appliance users should seek a water analysis from the water supplying authority and in cases where it is established that the water supply does not meet the quality requirements of the water quality table, the Bosch warranty would not apply.
1. Warranty Bosch offers, at its option, to repair or exchange this Bosch hot water unit or the relevant part listed in clause 2 below at no charge, if it becomes faulty or defective in manufacture or materials during the warranty period also stated in clause 2.
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(b) All warranty service calls must conducted by an authorised Bosch service agent. (c) Invoices for attendance and repair of a hot water unit by third parties not authorised by Bosch will not be accepted for payment by Bosch.
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