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Honeywell T4 Programmable Thermostat
£82.28
Ex VAT: £68.57
The T4 programmable thermostat is a modern a wired 7-day Programmable Room Thermostat. It is designed to provide automatic time and temperature control of domestic systems in domestic or light commercial premises.
Replaces CM67 models T6667B1085 and T6667B1069, CM61 models T6661B1040 and T6661B1073, CM907 model CMT907A1041 and CM901 model CMT901A1044
Features
- Compatible with 24-230V on/off appliances such as gas boilers, combi-boilers and zone valves
- The T4 can be used as a temperature sensing device in an S or Y Plan system
- Well suited to control combination boiler installations or additional zones in an S Plan Plus system
- On screen text display and function buttons to ensure simplified programming and operation for all users
- Energy saving TPI control
- Optimum stop, start & delayed start features that learn how the room is heated
- Two wire, volt free connections are ideal for use with combination boilers
- Easy to fit with a three step installation process: Wire, Power Up and Test, Configure
- New improved wall plate with extra wiring space
- Clip on cover to the fixed wall plate
- Optional Wired external sensor available (wired versions only)
- On screen heat demand icon makes start up testing easy
- Simple push button access to configuration menus
- Adjustable Frost protection
- Away mode with specific temperature set (number of days changeable)
- Temporary schedule override until next set point or for 1 or 2 hours
- Schedule can be turned off – will operate as a variable setting thermostat only
- Continuous time, displayed in extra-large LCD
- Automatic Summer/Winter time change
- 7-day programming with 7 day; 5/2 or single day schedules
- Four or six independent time & temperature settings (default is 4)
- Pre-configured 5/2 heating schedule
- Battery powered (with low-power indicator)
- Easy change battery compartment
- Optional backlight with extended light on time period
- Burner 'ON' symbol
Model: T4H110A1021
Ask a Question about Honeywell T4 Programmable Thermostat
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Yes. The neutral will not be needed - so should be isolated.
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Yes, it will connect to the same 2 wires.
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The T4 is not designed for surface wiring, and is larger than a single gang box. You may need to make or source a larger box for it to sit on.
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Yes it will. The T6360B will have a neutral which will not be needed by the T4. So just isolate it.
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I'm afraid not.
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Hi Unfortunately nothing will fit onto the CM901 backplate. However, there are a few options that will connect to the same 2 wires. If you you can let us know your requirements on functionality, we will recommend something.
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Hi Yes, it will connect to the same 2 wires as the CM67.
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Yes it can.
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Hi. It depends how your system is setup. But its not normally possible without plumbing changes.
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The two wires just make/break the live to the zone valve. Nothing else is needed apart from the incoming mains.
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Hi. Yes, a sundial S-Plan will give you less control and the timer will need to be placed where the junction box was (usually your airing cupboard). A programmable thermostat like the T4 will give you better control and the 2-wires to the old Smartfit room unit may be able to be used. However you will need a separate timer for the hot water which again will be in your airing cupboard. I would recommend the wireless Delta Dore 18E04 instead with motorised valves, a wiring centre, and a cylinder thermostat. This will be much easier to install and give you similar control to the old Smartfit system.
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This T4 would be suitable. The neutral to terminal 2 on the T6360B is not needed so should be isolated.
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To power the thermostat. The wiring to the thermostat is normally control wires only. There is rarely mains wiring as well.
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You need HCO code 05A01.