Viessmann VITOLIGNO 250-S Operating Instructions Manual page 54

Keyword index
Keyword index
(cont.)
Time program
– Central heating........................................................21
– DHW heating...........................................................28
Tips on energy saving.................................................. 9
Troubleshooting..........................................................40
Tubular heat exchanger
– Cleaning.................................................................. 45
– Cleaning ash pan.................................................... 46
U
Use...............................................................................7
54
W
Weather-compensated mode..................................... 50
Wintertime/summertime changeover........................... 9
Wintertime changeover................................................ 9
Wood fuel
– Limits.......................................................................48