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Heating controller WHC/WHC +

WITA heating controllers (WHC) are advanced heating controllers, installed in standard-dimension
housings of 144 x 96 mm. They have been developed for the control of room heating or cooling as well as
domestic hot water heating in single-family homes. They provide control for up to 2 heating circuits,
enable switchover between heat sources, and the protection of the return line during the storage tank

They are used for heating systems with one or two boilers, a heat pump, a storage tank, and a solar system.

Backlit graphic display
Operating hours meter
Weekly program timer
Connection voltage 230 V~, 50 Hz
Own consumption 5 W
Energy consumption in the standby mode Max. 0.5 W
Relay outputs 4 (1) A~, 230 V~
Triac output 1 (1) A~, 230 V~
Clock power supply Battery CR1025 (Li-Mn) 3 V
Clock accuracy +/-1 s (24 h) at 20 °C
Degree of protection IP20 according to EN 60529
Safety class I according to EN 60730-1
Operation mode 1B according to EN 60730-1
Type of temperature sensors Pt1000 or KTY10
Operation mode 3-point PID
Housing material ASA + PC – thermoplastic
Permissible ambient temperature 5÷40 °C
Storage temperature -20÷65 °C
Product weight 570 g

Typical application:

• Radiator heating system control
• Floor heating or cooling system control
• Convector heating or cooling system control
• Wall or ceiling heating or cooling system control
• Domestic hot water heating


• Up to 52 preset hydraulic schemes
• They may be used for the control of new systems
or to replace the installed controllers
• Room heating or cooling according to the time
• Domestic hot water heating according to the time
• Solar system domestic hot water heating
• Control of heating systems with a storage tank
• The possibility of connecting 2 room units
• BOOST function for intense room heating
• Integrated solar system protection features
• 13-language user interface
• Wizard for an easy and quick device start-up
• Operational diagnostics featuring error and
excessive temperature warnings
• Remote control with the help of the home system