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Gas Instantaneous Water Heater
WR 11/14/18 .G...
Installation Manual and Operating Instructions
Read installation manual prior to installation of this unit!
Read user manual before putting this unit in operation!
Observe the warnings in the manuals!
The installation room must fulfill the ventilation requirements!
Installation by an authorised person only!
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Summary of Contents for Bosch WR 11 G Series
- Page 1 Gas Instantaneous Water Heater WR 11/14/18 .G... Installation Manual and Operating Instructions Read installation manual prior to installation of this unit! Read user manual before putting this unit in operation! Observe the warnings in the manuals! The installation room must fulfill the ventilation requirements! Installation by an authorised person only!
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Page 2: Table Of Contents
2 | Table of contents Table of contents Key to symbols and safety instructions ..3 Maintenance (must be carried out only by qualified Key to symbols ..... . . 3 technicians) . -
Page 3: Key To Symbols And Safety Instructions
Key to symbols and safety instructions | 3 If there is a smell of burnt gases: Key to symbols and safety instructions ▶ Disconnect the appliance. ▶ Open doors and windows. Key to symbols ▶ Inform an installation company. Warnings Burn-back (fire in burner tube or chamber) ▶... - Page 4 4 | Key to symbols and safety instructions Important information for the user ▶ This appliance may only be installed by a registered LP Gas installer. ▶ All registered installers are issued with a card carrying their registration number. ▶ Ask to be shown the card before allowing the installation work to commence and make a note of the Installer QCC number.
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Page 5: Technical Characteristics And Dimensions
Technical Characteristics and Dimensions | 5 Technical Characteristics and Dimensions Explanation of Model Code • Heat exchanger in copper without tin/lead covering, • Water valve in fibreglass-reinforced polyamide, 100% recyclable, S..• Automatic adjustment of the water flow by means of a device which permits a constant flow to be maintained in S.. -
Page 6: Dimensions
6 | Technical Characteristics and Dimensions Dimensions Fig. 1 [1] Front cover [9] Gas connection [2] Hole for fixing to wall [10] Flue socket [3] Observation window [11] Draught diverter with flue gas monitor [4] Temperature control [12] Heat exchanger [5] Led failure indicator [13] Automatic gas valve [6] ON/OFF switch... -
Page 7: Electrical Diagram
Technical Characteristics and Dimensions | 7 Electrical diagram Fig. 2 Electrical diagram [1] Servo valve (normally open) burner only operates for the minimum necessary time to ignite [2] Diaphragm valve the main burner, in contrast to conventional systems which [3] Main valve (normally closed) operate permanently. -
Page 8: Technical Characteristics
8 | Technical Characteristics and Dimensions Technical characteristics Technical characteristics Symbol Units WR11 WR14 WR18 Power and flow Nominal useful power Btu/h 65570 80595 104165 Minimum useful power Pmin Btu/h 23905 23905 23905 Useful power (adjustment range) Btu/h 23905- 23905 - 23905 - 65570 80595... -
Page 9: Use
Use | 9 Open all water and gas blocking devices. Purge the pipes. CAUTION: The front panel in the burner and pilot burner area may reach high temperatures, with risk of burning in case of contact Before starting up the heater CAUTION: ▶... -
Page 10: Power Adjustment
10 | Regulation Power adjustment ▶ Turn clockwise. Decreases flow and increases water temperature. Lower water temperature. Less power. Regulating the temperature to the minimum required value reduces energy consumption as well as the possibility of limescale deposits in the heat exchanger. Purge the appliance If there is a risk of freezing, proceed as follows: ▶... -
Page 11: Installation
Installation (must be carried out only by qualified technicians) | 11 Selection of the place of installation Installation (must be carried out only by Requirements regarding the place of installation qualified technicians) • Do not install the heater in rooms with a volume of less than (not including the volume of the furniture providing The appliance must be installed in accordance this does not exceed 2 m... -
Page 12: Heater Mounting
12 | Installation (must be carried out only by qualified technicians) Combustion gases Heater mounting ▶ Remove the temperature/flow selector and the power DANGER: selector. Make sure that all flue connections are tighten ▶ Unscrew the front fixing screws. sealed. ▶... -
Page 13: Gas Connection
Installation (must be carried out only by qualified technicians) | 13 exchanger. This component has a turbine that rotates when water flows past its blades. This movement is transmitted to an electric generator which powers the heater ignition unit. The electrical voltage value supplied by the HDG is between 1,7VRMS and 2,2 VRMS AC. -
Page 14: Adjustments
14 | Adjustments (must be carried out only by qualified technicians) ▶ Connect the pressure gauge to the measuring point for the Adjustments (must be carried out only by burner pressure. qualified technicians) Factory regulations Sealed parts must not be interfered with. Natural gas Heaters designed for Natural gas H (G 20) are factory sealed for delivery after the values on the characteristics panel have been... -
Page 15: Conversion To A Different Type Of Gas
Adjustments (must be carried out only by qualified technicians) | 15 Natural gas H Butane Propane 8708202113 8708202130 (1,10) (0,70) WR11 8708202124 8708202128 (1,20) (0,72) 8708202113 8708202128 (1,10) (0,72) Injector code WR14 8708202116 8708202132 (1,25) (0,75) 8708202115 8708202130 (1,15) (0,70) WR18 8708202116 8708202132... -
Page 16: Periodic Maintenance Work
(inspection) or if ▶ Replace the water filter installed in the water valve entry. necessary (maintenance). These jobs can only be done by a Bosch Technical Assistance WARNING: delegate. Is forbidden to start up the appliance without water filter correctly assembled. -
Page 17: Problems
Problems | 17 Function check ▶ Start up appliance at rated output and set temperature control to maximum temperature; Flue gas safety device function check: Under those conditions, the appliance should shut down ▶ Disconnect flue pipe; after two minutes. Remove temporary pipe and reconnect ▶... -
Page 18: Environment / Disposal
18 | Environment / disposal Environment / disposal Environmental protection is a fundamental corporate strategy of the Bosch Group. The quality of our products, their efficiency and environmental safety are all of equal importance to us and all environmental protection legislation and regulations are strictly observed. -
Page 19: Warranty Terms
1685 Midrand South Africa Tel: +27 (0)11 651 9600 Bosch Gas Water Heaters have been thoroughly tested at the factory and fulfills all standards valid in the country. Robert Bosch (Pty) Ltd. provides warranty for this model and its components, for the period of 24 months from the date of the... - Page 20 6720607529...
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