3TABLE OF CONTENTS1 Safety instructions 52 Unit description 62.1 General ............................................................................................................................................................................................ 62.2 Functioning ...................................................................................................................................................................................... 62.3 Operating modes ............................................................................................................................................................................. 62.4 PC Interface .................................................................................................................................................................................... 82.5 Test programs ................................................................................................................................................................................. 83 Main components 93.1 Accessories ................................................................................................................................................................................... 104 Installation 114.1 Installation measurements ............................................................................................................................................................ 114.2 Installation space........................................................................................................................................................................... 134.3 Assembly ....................................................................................................................................................................................... 145 Connecting 165.1 Connecting CH installation ............................................................................................................................................................ 165.2 Connecting electronically .............................................................................................................................................................. 185.3 Connect room thermostat .............................................................................................................................................................. 195.4 Connecting gas ............................................................................................................................................................................. 205.5 Flue and air supply duct ................................................................................................................................................................ 215.6 Outlet systems ............................................................................................................................................................................... 225.7 Flue material .................................................................................................................................................................................. 235.8 Connection to a flue system without air inlet (B23, B33) .............................................................................................................. 255.9 Connection to a sealed flue system. ............................................................................................................................................. 266 Commissioning the unit and the Installation 346.1 Filling and air purge of unit and installation ................................................................................................................................... 346.2 Commissioning the unit ................................................................................................................................................................. 356.3 Switching off the unit ..................................................................................................................................................................... 367 Setting and adjustment 377.1 Direct via operating panel.............................................................................................................................................................. 377.2 Parameter settings via the service code ....................................................................................................................................... 387.3 Parameters .................................................................................................................................................................................... 387.4 Setting maximum CH power.......................................................................................................................................................... 407.5 Setting pump setting...................................................................................................................................................................... 407.6 Weather dependent regulation ...................................................................................................................................................... 417.7 Conversion to different type of gas................................................................................................................................................ 427.8 Gas/air regulation .......................................................................................................................................................................... 427.9 Setting gas/air regulation............................................................................................................................................................... 438 Malfunctions 458.1 Show last malfunction ................................................................................................................................................................... 458.2 Malfunction codes ......................................................................................................................................................................... 458.3 Other faults .................................................................................................................................................................................... 469 Maintenance 4910 Technical specifications 5110.1 Technical Product Fiche in accordance to CELEX-32013R0811 .................................................................................................. 5210.2 NTC resistances ............................................................................................................................................................................ 5310.3 Electrical diagram .......................................................................................................................................................................... 5411 Warranty conditions 55© 2019 Rotex Heating Systems GmbHAll rights reserved.The information provided applies to the product in its standard version. Rotex Heating Systems GmbH can therefore not be held liable for any damages arising fromany specifications of the product which deviate from the standard version. The available information has been compiled with the greatest possible care, but RotexHeating Systems GmbH can not be held liable for any mistakes in the information, or for any consequences thereof. Rotex Heating Systems GmbH cannot be heldliable for any damage arising from work carried out by third parties.Subject to change.