6720808877-00.
| Index Index 6.3.3 1 Key to symbols and safety instructions . . . . . . . . . . 3 1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 General safety instructions . . . . . . . . . . . . . . 3 6.3.4 6.4 2 Product details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 Declaration of Conformity . . . . . . . . . . . . . . 2.2 Type overview . . . . . . . . . . . . . . . . . . . . . . . . 2.3 Included items . . . . . . . . . . . . . . . . . . . . . . . . 2.
Key to symbols and safety instructions | 3 1 Key to symbols and safety instructions 1.1 Key to symbols Warnings Warnings in this document are identified by a warning triangle printed against a grey background. Keywords at the start of a warning indicate the type and seriousness of the ensuing risk if measures to prevent the risk are not taken. The following keywords are defined and can be used in this document: • NOTICE indicates a situation that could result in damage to property or equipment.
| Key to symbols and safety instructions This appliance must not be installed indoors or in an enclosed space. This appliance is approved for outdoor installation only. Do not install this appliance with any modification or alteration. Failure to install this appliance in accordance with these installation instructions will void the warranty and may create an unsafe situation. Installation DANGER: This appliance must not be installed indoors or in an enclosed space in accordance with AS/NZS5601.
Product details | 5 “This appliance can be used by children of 8 years and older, as well as by people with reduced physical, sensory or mental capabilities or lacking in experience and knowledge, if they are supervised and have been given instruction in the safe use of the appliance and understand the resulting dangers. Children must not play with the appliance. Cleaning and user maintenance must not be performed by children without supervision.
| Product details 2.7 Dimensions and minimum clearances >10 >10 583 B 240 51 120 80 107 A Fig. 1 C 6720808877-02.1V Dimensions (in mm) Connections Water GWH12 Table 4 A 300 B 570 C 170 Cold ½“ Gas Hot ½“ Nat.
Product details | 7 2.8 Appliance layout 1 21 2 12 13 3 14 4 5 6 7 8 15 9 16 17 18 10 19 11 20 6720808877-03.1V Fig.
| Product details 2.9 Fig.
Product details | 9 2.10 Specification Technical features Units GWH12 Nominal gas consumption MJ/h 90.0 Minimum gas consumption MJ/h 11.9 % 82.4 Natural gas (when operating) kPa 1.13 Universal LP gas (when operating) kPa 2.75 Maximum permissible pressure (static) kPa 1000 Minimum operating pressure kPa 100 Minimum water flow l/min 2.2 Maximum flow, corresponding to a temperature increase of 25 °C l/min 12.
| Regulations 3 Not suitable for pool or spa pool applications. Regulations Any local by-laws and regulations pertaining to installation and use of gas-fired appliances must be observed. This appliance must be installed in accordance with the manufacturers installation instructions, AS/NZS5601 and all Local Building & Gas fitting regulations WARNING: Scalding! This appliance can deliver water exceeding 50 °C.
Installation (only by authorised technicians) | 11 4.1 Choice of installation site 4.1.1 Regulations concerning the installation site ▶ Install the appliance outdoors. The top of the unit should be positioned at less than 1800mm from the ground (the bottom should remain at more than 300mm). ▶ The water heater may not be installed over a heat source. ▶ Comply with the minimum installation clearances indicated in Fig. 5 and Table 6.
| Installation (only by authorised technicians) Item Min.clearance (mm) Appliances over 150 MJ/h input 1500 It is recommended that for sanitary fixtures use primarily for the purpose of personal hygiene, that a temperature control device be fitted (such as a tempering valve) as per AS3498. 4.
Electrical connection (only by authorised technicians) | 13 4.7 Remote control connection (optional) Connecting the communication cable to the remote control ▶ Open the remote control. ▶ Remove the larger connector from the communication cable. ▶ Connect the larger connector to the controller in the position shown in Fig. 7. ▶ Remove the plastic tag to allow the cable to be feed through. ▶ Feed the end of the cable without a connector through the opening in the back cover.
| Regulating the gas (only for authorised technicians) If the power cable is damaged, it must be replaced with a Bosch supplied spare part. ▶ Reset the appliance by switching it off at the socket and unplugging the cord. 6 Regulating the gas (only for authorised technicians) 6.1 Factory regulation ▶ Connect the power cable to a power socket. 5.2 Commissioning of the appliance ▶ Open the gas and water isolation valves and check the tightness of all the connections.
Regulating the gas (only for authorised technicians) | 15 6.3 Adjusting the appliance 6.3.1 Access to the pressure heads ▶ Remove the front of the appliance. B A - + 6720804089-11.1V Fig. 9 [A] Air pressure test point [B] Gas pressure test point 6.3.2 Adjusting the maximum flow (Parameter P1) ▶ Connect the appliance on the ON/OFF button. ▶ Loosen the test point screw of the gas pressure test point .[B] ▶ Connect the pressure gauge connection "+" to the gas pressure test point.
| Regulating the gas (only for authorised technicians) Natural gas H Universal LP gas Ø injector GWH12 1.7 1.3 Dynamic connection pressure (mbar) GWH12 11.3 27.5 Burner pressure (mbar) - P0 GWH12 1,2 Differential pressure of the burner GWH12 MAX (mbar) P1 4.6 - 5.0 6.3 - 6.7 Differential pressure of the burner MIN (mbar) P2 0.5 - 0.8 0.5 - 0.8 Table 8 GWH12 6.
Maintenance (only by authorised technicians) | 17 7 Maintenance (only by authorised technicians) Bosch recommend that to maintain optimum performance from this appliance, servicing should be carried out by suitably licensed persons at intervals not greater than two (2) years. Maintenance must only be performed by an authorised service technician.
| Troubleshooting 8 Troubleshooting Fitting, maintenance and repair must only be carried out by authorised technicians. The following table describes the possible solutions. Display Description Solution A0 Cold and hot temperature sensor damaged. ▶ Check temperature sensor and associated connections. ▶ If the problem persists, call an authorised service technician.
Troubleshooting | 19 Display Description Solution E2 Cold temperature sensor faulty. ▶ Check temperature sensor and associated connections. ▶ If the problem persists, call an authorised service technician. E4 Air temperature sensor detects overheating (leaking ▶ Switch off at the power point and remove the combustion products inside the combustion plug from the electrical socket. chamber). ▶ Do not try to restart the appliance. E9 Activated thermal fuse. ▶ Call an authorised service technician.
| Environment / disposal 9 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. We use the best possible technology and materials for protecting the environment taking into account of economic considerations.
Water quality | 21 10 Water quality All Bosch water heating appliances are constructed from high quality materials and components and all are certified for compliance with relevant parts of Australian and New Zealand gas, electrical and water standards. Whilst Bosch water heaters are warranted against defects, the warranty is conditional upon correct installation and use, in accordance with detailed instructions provided with the heater.
| Warranty details 11 Warranty details Robert Bosch (Australia) Pty Ltd (Bosch) Manufacturer's Warranty (Applicable for purchases from 1 January 2012) All Bosch hot water units are carefully checked, tested and subject to stringent quality controls. 1.
Warranty details | 23 Privacy Act 1988 (Cth). Bosch will not forward customers' personal information to third parties other than for the Purpose. A customer can object at any time to the use of their personal information for the Purpose. Bosch will cease to use a customer's personal information accordingly if an objection is made. 7.
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