Drayton Wiser Multi-Zone Smart Thermostat and 2 Smart Radiator Thermostat Kit - Conventional Boilers Only - Heating and Hot Water Control

Product Information

If you’re looking to upgrade your old gravity-fed boiler system, it usually comes down to two choices: the combi boiler vs the system boiler.

See if you have a time controller on your system or if it just on and off at the boiler. Controlling your system by turning the boiler on an off could indicate a gravity system. If, however, but turning on the central heating side, the hot water also turns on, this would indicate a gravity system. Advantages Of Conventional Boilers With Vented Hot Water And Pumped Central Heating However, it does have an Away Mode. Rather than switching the heating off completely while you’re out, this feature allows you to set a minimum temperature at which you want your home to remain at while away. If the temperature plunges below this threshold, the heating will spring to life – handy, if you're concerned about frozen pipes when you’re not at home. A system that was originally fully gravity-fed that has been upgraded/retrofitted with motorised valves, such that the central heating is now fully pumped - a recommended upgrade if full replacement of an older gravity-fed system is not possible.

Wiser Thermostat Kit 3

Hot water flow depends on the cold water mains pressure, so if this supply is lost, you will soon lose the hot water supply.

See if you have a time controller on your boiler or if it only has an on/off switch. Controlling your system by turning the boiler on and off could indicate a gravity system.

Wiser Electrical Heat Switch

Requires a three-channel Wiser kit ( Wiser Thermostat Kit 3) – note that you won’t require the third channel, because the hot water control in a combi system is not separate. A two-channel kit is not suitable for a combi system with two heating zones as the second channel in the two-channel kits is only suitable for hot water control in a conventional boiler system (with a separate hot water tank). Wiser thermostat and multi-zone kits 2 and 3 may be compatible with gravity-fed systems that have been retro-fitted or upgraded with pumps and cylinder thermostats - Please speak to our Technical Support Helpline on 0333 6000 622 for further advice on your system’s compatibility. It can provide good pressure in some residential areas where mains water pressure is low, particularly if the water circuit is also upgraded with pumps. Boiler Systems Explained: Conventional Gravity-Fed Boilers With A Vented Hot Water Cylinder And Non-Pumped Central Heating

Timer and thermostat control of the central heating is available independently of the hot water due to a cylinder thermostat fitted to the hot water cylinder. May be more economical to run for smaller households than other boiler system types according to the Energy Saving Trust. If, however, but turning on the central heating side, the hot water also turns on, this would indicate a gravity system. ADVANTAGES OF CONVENTIONAL BOILERS (with vented hot water and fully pumped) This common boiler system is effectively an upgraded gravity-fed system, where the central heating is upgraded to be fully pumped while the hot water remains gravity-fed.A combination or ‘combi’ boiler system combines a water heater and central heating boiler into one compact unit. These space-saving systems are increasingly popular amongst homeowners upgrading their older central heating systems and, according to the Energy Saving Trust, may be more efficient for smaller households with a low hot water demand – when hot water is heated and stored in a separate tank, heat can be lost when it’s not used. CHARACTERISTICS OF COMBI BOILERS (one heating zone) Also known as sealed or system boiler systems, a conventional boiler system with an unvented hot water cylinder uses a hot water cylinder that’s separate to the boiler but does not require a cold water tank usually typical of vented gravity-fed systems. CHARACTERISTICS OF CONVENTIONAL BOILERS (with unvented cylinder and one heating zone) Central heating is not available independently of the hot water – water will always be heated when the heating is on whether it’s used or not. Requires a three-channel Wiser kit – you won’t require the third channel because the hot water control in a combi system is not separate. However, a two-channel kit is not suitable for a combi system with two heating zones, as the second channel is only suitable for hot water control in a conventional boiler system (with a separate hot water tank).