The T4 programmable thermostat is a modern 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.

Features:

• Compatible with 24-230V on / off appliances such as gas boilers, combi-boilers and zone valves.
• 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 and 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 and 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.

Technical data:

• Brand - Honeywell
• Product Type - Programmable Thermostat
• Connection - Wired
• Depth - 26mm
• Height - 95mm
• Width - 135mm
• Timer Cycle - 7 days, 5 / 2 days or 24h
• Voltage - 24V To 230V