Vaillant VRT 350 - Page 4

Contents
4 Operating instructions VRT 350 0020135485_00
5.5 Messages ...................................................................... 25
5.5.1 Service message ......................................................... 25
5.5.2 Fault message.............................................................. 25
6 Saving energy..................................................... 27
6.1 Controlling the room temperature......................... 27
6.2 Reducing the room temperature ............................ 27
6.3 Uniform heating .......................................................... 27
6.4 Using thermostatic radiator valves and
weather compensators or room thermostats ..... 27
6.5 Do not cover controllers ........................................... 27
6.6 Ensuring economic hot water generation ............ 27
7 Service and troubleshooting............................ 28
7.1 Cleaning the controller............................................. 28
7.2 Detecting and rectifying faults............................... 28
8 Decommissioning ............................................... 29
8.1 Replacing the controller............................................ 29
8.2 Recycling and disposal .............................................. 29
9 Warranty and customer service....................... 30
9.1 Warranty ...................................................................... 30
9.2 Customer service....................................................... 30
10 Technical data ..................................................... 31
10.1 Controller....................................................................... 31
11 Glossary .............................................................. 32
11.1 Selection level ............................................................. 32
11.2 Mode .............................................................................. 32
11.3 Setting level ................................................................. 32
11.4 Fault message.............................................................. 32
11.5 Heating circuit ............................................................. 32
11.6 Heating installation .................................................... 32
11.7 Night temperature...................................................... 32
11.8 Room temperature..................................................... 32
11.9 Day temperature......................................................... 32
11.10 Level of protection..................................................... 32
11.11 Protection class........................................................... 32
11.12 Status message........................................................... 32
11.13 Thermostatic radiator valve .................................... 32
11.14 Flow temperature ....................................................... 32
11.15 Hot water generation................................................. 32
11.16 Time periods ................................................................ 33
11.17 Timer program ............................................................ 33
11.18 Access level for the operator .................................. 33
11.19 Access level for the competent person................. 33
Index....................................................................................34