Related Manuals for Bosch Therm 4300 Series
Summary of Contents for Bosch Therm 4300 Series
- Page 1 Installation and Users Instructions Gas Instantaneous Water Heater Therm 4300 T4300 11/14/18-2D...
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Page 2: Table Of Contents
Table of contents Table of contents Key to symbols and safety instructions ... 3 Maintenance (must be carried out only by Key to symbols ..........3 qualified technicians) ........16 Safety information .......... 3 Periodic maintenance tasks ......16 Startup after maintenance work ...... 16 Heater purge .......... -
Page 3: Key To Symbols And Safety Instructions
Key to symbols and safety instructions If there is a smell of gas: Key to symbols and safety instructions ▶ Close the gas valve. Key to symbols ▶ Open windows. Warnings ▶ Do not connect any electrical appliance. Warnings in this document are identified by a warning triangle printed against a grey ▶... - Page 4 Key to symbols and safety instructions Maintenance together with the safety instructions. You will be asked to sign acceptance ▶ The user must maintain and of the installation and be provided periodically service the appliance. with a completion certificate. You ▶...
- Page 5 Key to symbols and safety instructions Safety of electrical appliances for domestic use and similar purposes The following requirements apply in accordance with EN 60335-1 in order to prevent hazards from occurring when using electrical appliances: “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...
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Page 6: Technical Characteristics And Dimensions
Technical Characteristics and Dimensions • Hydrodynamic generator produces the necessary Technical Characteristics and electrical power for ignition and appliance monitoring Dimensions • Heat exchanger without tin/lead covering • Water valve in fibreglass-reinforced polyamide, 100% Type overview recyclable • Automatic adjustment of the water flow by means of a 4300 device which permits a constant flow to be maintained in spite of variable pressure supplies... -
Page 7: Dimensions
Technical Characteristics and Dimensions Dimensions Fig. 1 [4] Heat exchanger [35] Switch / LED - Low water flow indicator [5] Burner [36] Front cover [10] Temperature/volume selector [37] Hole for fixing to wall [20] Gas connection [38] Exhaust pipe union [23] Ignition unit [39] Flue with non-return device [26] Power selector... -
Page 8: Electrical Diagram
Technical Characteristics and Dimensions Electrical diagram Fig. 2 Electrical diagram [2] Spark plug burner only operates for the minimum necessary time to ignite [3] Ionisation probe the main burner, in contrast to conventional systems which [23] Ignition unit operate permanently. [25] Servo valve (normally open) Air in the gas supply pipe when the heater is [28] Gas valve (normally closed) -
Page 9: Technical Data
Technical Characteristics and Dimensions Technical Data Technical Data Symbol Units T4300 11-2D T4300 14-2D T4300 18-2D Output and heat demand Rated max. heat output 19,2 23,6 29,5 (Btu/h) (65570) (80595) (100589) Rated min. heat output Pmin (Btu/h) (23905) (30710) (31733) Output (modulation range) 7 - 19,2 9,0 - 23,6... -
Page 10: Use
Turning the heater on and off Turning on ▶ Press the switch , position Open all water and gas blocking devices. Purge the pipes. CAUTION: The area in front of the burner can reach very high temperatures, and there is a risk of burning on contact. -
Page 11: Power Adjustment
Regulations Power adjustment Regulating the temperature to the minimum required value reduces energy consumption as well as the possibility of lime Lower water temperature. scale deposits in the heat exchanger. Less power. CAUTION: The temperature on the display is not precise, always check before bathing children or elderly people. -
Page 12: Important Information
Installation (must be carried out only by qualified technicians) Important information • The heater must not be installed in locations where the room temperature can reach 0 °C. ▶ Before installation, consult the gas company and current legislation regarding gas appliance and site ventilation. In case of a frost risk: ▶... -
Page 13: Fixing The Appliance
Installation (must be carried out only by qualified technicians) smaller than the dimension specified in the appliances Water connection dimensions table. It is advisable to drain the appliance before installing it as any • The extremity of the evacuation pipe must be protected dirt or grit inside it could reduce the water flow rate and, in against wind/rain extreme cases, could completely clog up the appliance. -
Page 14: Commissioning
Adjustments (must be carried out only by qualified technicians) The gas connection to the water heater must absolutely comply Any local by-laws and regulations pertaining to installation and with the National Standards. use of gas-heated appliances must be observed. Please refer to the laws that should be attended in your ▶... -
Page 15: Pressure Regulation
Adjustments (must be carried out only by qualified technicians) Pressure regulation Minimum gas flow adjustment The minimum gas flow adjustment is Access to the adjuster screw performed automatically after the ▶ Remove the appliance front cover ( see section 5.3). adjustment of the maximum gas flow. -
Page 16: Maintenance (Must Be Carried Out Only By Qualified Technicians)
Maintenance (must be carried out only by qualified technicians) Maintenance (must be carried out only WARNING: Without a water filter installed, turning on the heater is prohibited. by qualified technicians) The appliance should only be serviced by an Startup after maintenance work approved engineer. -
Page 17: Safe Operation/ Risk For Prolonged Use
Maintenance (must be carried out only by qualified technicians) DANGER: The user must never touch the device. Maintenance If the probe malfunctions, proceed in the following manner: ▶ Unscrew the probe fixing screw. ▶ Detach the ignition unit terminal. ▶ Replace the damaged part and proceed with its assembly using the steps indicated in the previous table, in reverse order. -
Page 18: Problems
Problems Problems Problem/cause/solution Assembly, maintenance and repairs must be performed by qualified technician only. The following chart offers solutions to possible problems (solutions followed by an * must be undertaken by qualified technician only). Problem Cause Solution Switch turned off. The heater does not ignite and ▶... -
Page 19: Environment / Disposal
installing non-original parts; All of our packaging materials are environmentally friendly and Robert Bosch (Pty) Ltd. does not take over any responsibility can be recycled. for personal damage, property damage or product damage Used appliances caused by installations done by unauthorized persons.