NHC-H34 is a new generation of electronic temperature regulators, designed for management and control of an electric water heaters, combined with a solar thermal collectors. Both models have a modern, multifunctional graphic LCD display. Via these temperature regulators a new class of combined electric boilers is developed, combining the electrical and solar power in one device.

 

 

Working with solar collector and electric heater

The digital controllers NHC-H33 / NHC-H34 have some specific advanced features, which can not be found in other devices of the same class:

• Power adding when the sun can not heat the water up to the necessary temperature.
• An automatic anti-freeze function, protecting the boiler from freezing by starting the electric heater when the water temperature drops below 3°C.
• An automatic anti-freeze function, protecting the solar collector system from freezing. When the temperature drops below the freezing point of the heat-transfer fluid the circulating pump will start and will transfer heat from the boiler to the solar collector.
• Overheating protection of the solar collector - If the warm water in the boiler is not used for a longer period and the heat coming from the collector can not be transferred anywhere, an alarm will be activated.
• Providing information about the status of the anode protector.
• Providing information about electric leakage from the heater to the casing more than 30mA.
• Available adaptive power-saving algorithm used in the electric heater to heat the water.
• Self-diagnostic of all circuits.
• There is an option to connect an UPS in order to keep the circulating pumps working until the mains is back.
• A clock, which allows programming of a specific scheme for switching on and off of the electric heater, ensuring an automatic use of a time zone with cheaper power.
• Delayed start timer, allowing adjusting the date and time for start up of the electric heater.
• An option for separate measuring of the consumed electrical power in kWh in two or more tariffs or graphically.

Holiday mode is activated

NHC-H33 / NHC-H34 are designed for building in the production of new water heaters made by Eldominvest Ltd.