Honeywell 7 Day Programmable Thermostat CM707

Product Information

What colour is used for what, would have been chosen by the original installer and varies from installation to installation. The other night, I had to turn my boiler off, because it kept coming on in the middle of the night, even though the ambient temperature was above set temperature. You need to alter the wiring at the time clock too, you cannot just connect the wiring from the old stat as it exists as the nest runs on 12v d c and the wiring you have at the stat is 240v so you will simply blow the nest. This is used, for example, if the 'stat is locaqted in a poor place that might suffer from draughts - since the 'stat will be senseing air that is colder than in the rest of the room, this control will allow you to alter the displayed temp to represent the main room as opposed to the 'draught'.

So with a gas boiler the TRV head is king, this is the device used to control room temperature, and because it gradually opens and closes it works in harmony with the boiler, allowing it to modulate as it is designed to do. Please note that this unit has 2 On/Off periods per day, compared to the 3 periods of the CM900 series Honeywell Thermostats. If you have a neutral in your old room stat it's normally for an accelerator / anticipator which mechanical stats need to improve accuracy. I have three of these - two controlling underfloor heating manifold valves and one controlling my radiator circuit. The end goal is to remove the existing zoning for heating with the HoneyWell thermostats and the switch valves (i.In your wiring diagram on the multi channel hive, you show what looks like an internal loop between the Live terminal and the others. You'll find the biggest plumbing brands and latest must-have products including smart home thermostats right here at PlumbingSupermarket. The Honeywell CM707 thermostat is a heating control device that allows you to easily manage the temperature of your home.

Some boilers like Bosch have not adopted OpenTherm, they have their own modulating thermostats, but these only work in one room, so unless open plan home not really very good control, it would seem the Hive system was designed to get around this problem when boiler manufacturers only allow on/off electrical control. Each day can be set with its own programme, or the programme can be copied to other days- so every day of the week can have the same programme- or you can have a different programme at weekends etc. The CM700 range of programmable room thermostats is designed for social housing provider and specifier market needs by providing automatic time and temperature control of domestic heating premises. The range caters for all requirements with hard-wired or wireless versions and 1 day or 7 day programming. I found in mothers house the thermostat fitted by central heating installer was inappropriate for the installation.

OFF mode has an integral frost protection setting at minimum 5°C (installer adjustable) so that pipes in the house will never freeze in winter. The CM700 range has a scheduled maintenance alert fault diagnostic mode and automatic Summer/Winter time change to assist in maintenance. Wiser however has a memory built into the TRV head, so it knows at what point to start turning off, so can reheat a room faster.