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Installation Manual
Bosch Tronic 6100 C Electric Tankless Water Heaters- BTC 724001301 A (08.2022)
Table of Contents
1 Key to Symbols and Safety Instructions 4
1.1 Key to Symbols 4
1.2 Safety 4
2 Prepare the Water Heater 6
2.1 lnspect Shipment 6
2.2 Water Heater Rating Label Location 6
2.3 Clearances 6
2.4 Locating the Water Heater 7
2.4.1 Installation Area (Mechanical Room) Operating Conditions 7
2.4.2 Centralized Location 8
2.4.3 Replacing an Existing Water Heater 8
3 Water Quality Requirements 8
4 Water Heater Components 9
5 Dimensions 10
6 Technical Specifi cations 11
7 Installation 12
7.1 Wall Mounting the Water Heater 12
7.2 Plumbing 14
7.2.1 Pressure Relief Valve 14
7.3 Installation Example 15
7.5 Scalding 16
7.6 Filling the Heater 16
7.7 Electrical Connection 17
7.8 Wiring Diagrams 18
7.8.1 Power Supply Wiring for 18 and 27kW 18
7.8.2 Internal Wiring Diagram for 18kW 19
7.8.3 Internal Wiring Diagram for 27kW 20
8 Installation Checklist 21
9 Operation 22
10 Seasonal Operation 22
11 Maintenance 23
11.1 Removing the Cover 23
11.2 Cleaning the Inlet Pre-Filter 24
11.3 Draining the Heater 24
11.4 Removing a Heating Element
25
11.5 Descaling the Heating Element 27
12 Troubleshooting 28
12.1 High Limit Switches 30
12.2 Checking Thermostat Operation 30
12.3 Testing the Heating Element 31
12.4 Testing / Changing a Triac 32