Vaillant 140 Heating and Hot Water Programmer

• Plug-in digital programmer for ecoTEC condensing boilers provides 7-day or 24-hour independent time control for central heating and hot water.
• When installed with ecoTEC combination boilers, the control can
  be used to provide time control to the ?AquaComfort? function.
• When installed with an ecoTEC system boiler and a VR 65 control centre, the programmer provides time control for the hot water system.
• The programmer has 3 independent on-off time periods per day,
  heating advance function and holiday function.
• Vaillant 140 Controls Brochure

Note: VR 65 must be used with ecoTEC system or open vent   boilers and   timeSWITCH 140.