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Heatrae Sadia Amptec 4kw electric boiler



SKU
134100
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Customers Also Bought

  • Honeywell CM921 24 hour programmable room thermostat radio frequency controlled

    The Honeywell CM921 Wireless Programmable Thermostat is a wireless thermostat providing control over the time and temperature of the domestic central heating system. The CM921 Programmable Thermostat allows the user to programme different time and temperature requirements for the day but where the heating needs to be the same from day to day. The CM921 Wireless Programmable Thermostat has a slim modern design that is complemented with a large LCD screen with Line of Text display and one function button for quick and simple operation and programming.

    The Honeywell CM921 Wireless Programmable Thermostat can be used to control the heating circuit in a sundial S or Y plan and is well suited to control a combi boiler installation or additional heating zones in an S plan plus system. 

    Key Features:

    • Wireless communication between thermostat and receiver box (supplied)
    • Auto, Manual, Holiday and Off (frost) modes
    • Extra large LCD display with user friendly Line of Text display
    • Up to six time and temperature settings per day
    • Synchronised boiler control in multi-zone systems for optimum efficiency
    • Boiler 'ON' display
    • Volt free connections
    • Automatic Summer/Winter time change
    • Energy saving TPI control  

    Honeywell CM921 24 Hour Programmable Thermostat Control Layout 

     

    1. Day & Date Display
    2. Time Display
    3. Dynamic Text Display (DTD)
    4. Burner On Indicator
    5. Battery Low Indicator
    6. Temperature Display
    7. Temperature Change Buttons
    8. Information Enquiry Button
    9. Slider Switch
    10. Green OK Button
    11. Program Buttons
    12. Battery Cover
    13. Battery Compartment
    14. Holiday Button
    15. Time Change Buttons
    311939
    £88.68
  • Altecnic 35 Litre Expansion Vessel

    The Altecnic 35 Litre Expansion Vessel 

    • Capacity : 35 litre
    • Diameter : 404mm
    • Height : 408mm
    • Inlet : ¾" BSP
    • Max working connection pressure: 4 bar
    • Working temperature range: -10°C - +99°C

     

    How the Altecnic 35 Litre Expansion Vessel Works

    In a closed central heating system water cannot be compressed so any increase in the volume, created by an increase in temperature, needs to be accomodated. This is done with the use of an expansion vessel, when the water in the system is cold the pre-charge pressure of the system forces a diaphram in the expansion vessel against the tank towards the inlet. As the temperature increases the expanding water volume pushes against the diaphragm creating additional volume for the water to enter the expansion vessel. As the temperature decreases the pre-charge pressure forces the water from the expansion vessel back into the central heating system. This maintains a constant pressure within the central heating system and helps to reduce energy and water consumption.

    893005
    £70.72
  • SIME JIG BOX COMBI

    138532
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