Installation and Operating Instruction

Table of contents
5 Start up 24
5.1 Filling and Ventilating the Heating System 24
5.2 Ventilating the Unit 24
5.3 Ventilating the Lower/Standing Reservoir (optional) 25
5.4 Start up 26
5.4.1 Performance of the Unit Test Routine upon Start up 26
5.5 (Pre) Setting the Boiler 26
5.5.1 CO2 Boiler Settings 26
5.5.2 Gas Throughput Table / Connection Pressure 27
5.5.3 Changing Gas Types 27
6 Operating the Controls 28
6.1 Description of the Control Panel 28
6.2 LED Display Symbols 28
6.3 Controller Functions and Operating Status 29
6.3.1 Start up 29
6.3.2 Standby Mode 29
6.3.3 Flame Detector 29
6.3.4 Central Heating Mode 30
6.3.4.1 Operating the Central Heater 30
6.3.4.2 Anti-Cycling Central Heating 30
6.3.5 Drinking Water Mode 30
6.3.5.1 Operating the Drinking-Water Heater 30
6.3.5.2 Anti-Cycling Drinking-Water Heater 31
6.3.6 Changing the Set-point 31
6.3.6.1 Changing the Set-point for Central Heating 31
6.3.6.2 Changing the Set-point for the Drinking-Water Heater 31
6.3.7 Summer Mode 32
6.3.8 Chimney Sweep Mode 32
6.3.9 Installer Mode 32
6.3.10 Installer (+) Mode 33
6.3.10.1 Installer (+) Parameter List 34
7 Malfunctions and Errors 36
7.1 Error Mode 36
7.2 Error Code List 36
7.2.1 Shutdown Codes 36
7.2.2 Locking Codes 37
7.3 Error history Mode 39
7.4 Log Resistance Values for the Boiler and Reservoir Sensors 39
8 Maintenance 40
8.1 General Instructions for Maintenance 40
8.2 Cleaning the Condensed Water Siphon 40
8.3 Cleaning the Combustion Chamber 40
9 Technical Data 43
9.1 Circuit Diagram 43
9.2 Technical Data 44
10 Declaration of Conformity 46
Gebr. Bruns GmbH is not responsible for typographical errors or technical inaccuracies and reserves the right to make adjustments.
Gebr. Bruns GmbH • Hauptstraße 200 • 26683 Saterland •Tel.: + 49 (0) 44 92 / 92 46-0 • Fax: + 49 (0) 44 92 / 71 41
www.bruns-heiztechnik.de • info@bruns-heiztechnik.de