Notes on the documentation 1 Safety 2 Notes on the documentation Safety The following information is intended to help you What to do in an emergency throughout the entire documentation. Further documents apply in combination with this Danger! operating manual. If you smell gas, risk of poisoning and explosion We accept no liability for any damage caused by due to a malfunction!
- Do not damage or remove seals on components. Only suitably qualified heating engineer or our customer Vaillant warranty service may removed sealed components. Vaillant provide a full parts and labour warranty for this appliance. Caution! The appliance must be installed by a suitably competent...
Requirements of the installation site temperature must be set on the weather compensator. The Vaillant gas heating boilers atmoCRAFT must be This setting must not be greater than that required by installed in boiler rooms. Ask your heating engineer the design of the heating installation.
Page 7
These circulation pumps can also be used with the As soon as the temperature in the room gets too hot, Vaillant atmoCRAFT. There is no doubt that they provide the thermostatic valves are turned down (or the room increased comfort for hot water heating. Please bear in thermostat is set to a reduced temperature).
Operation 4 Operation The operating elements have the following functions: Display for indication of the current operating mode Overview of the operating elements or specific additional information 2 "i" button for calling up information The operating elements are accessible after folding up 3 Controller (accessory) the upper section (1) and folding down the lower section 4 Button for switching the unit on and off.
4 Operation Display of the current heating feed temperature • Check the filling pressure of the installation using the or display of a status or fault code pressure gauge (1, not included). For the heating Flue problem system to operate properly, the pointer on the pressure gauge (1) must be between 1.0 and 2.0 bar Flue problem filling pressure.
Operation 4 Caution! Caution! Risk of damage! Danger of calcium deposit build-up. The frost protection and monitoring systems If your water hardness is more than 1.79 mol/m are only active when the main switch of the (10 °dh), do not turn the knob (3) further than appliance is in the "I"...
4 Operation Settings for heating 4.5.2 Setting the flow temperature (no controller connected) 4.5.1 Setting the flow temperature (when using a controller) Fig. 4.7 Setting the feed temperature when using a controller Fig. 4.8 Feed temperature setting without heating controller To comply with the regulations concerning the energy- saving requirements of heating-technology If there is no external controller, set the flow...
Operation 4 4.5.3 Switching off heating (summer operation) Status displays Fig. 4.9 Switching off heating (summer operation) Fig. 4.11 Status displays You can switch off the heating in summer without The status display provides information on the switching off the hot water supply. operational condition of your boiler.
4 Operation Display Meaning Caution! Displays of system conditions Inappropriate alterations can cause damage! S.30 No heat requirement from 2-point controller If your gas boiler still does not work properly S.31 Summer mode active after you have checked the above points, you S.34 Frost protection heating active must call a suitably qualified heating engineer...
4.8.5 Faults with the exhaust gas removal If your gas boiler still does not start after the The Vaillant atmoCRAFT units can be equipped with an third attempt, you must call a suitably qualified exhaust gas sensor (accessories). If the exhaust gases heating engineer for help.
To ensure that these protection devices remain active, Vaillant assumes no liability for this and such switch your gas boiler on and off in normal mode using consequential damages. the controller (see the corresponding operating manual).
4.11.2 Maintenance requirement indicator as well as to noises in the heating operation. The heating engineer can adjust a maintenance Vaillant assumes no liability for this and such requirement display in your boiler. consequential damages. If this function is activated, the read-out "SER" appears in the display on your boiler as soon as maintenance becomes necessary.
4 Operation 4.11.3 Chimney sweep measurements Note! The measurement and checking work should be carried out only by the chimney sweep. Fig. 4.17 Switch on the chimney sweep mode Proceed as follows to perform the measurements: • Activate the chimney sweep mode by simultaneously pushing the buttons "+"...