Naturela NHC-H42-2 User Manual - page 16

Manual is about: Electronic temperature regulator for three-phase electrical water heaters, with two heat exchangers and a remote control option

Summary of NHC-H42-2

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    Electronic temperature regulator for three-phase electrical water heaters, with two heat exchangers and a remote control option nhc-h42-2 software version 2.3 user manual nhc-h42 are a new generation built-in electronic temperature regulators, designed for combined water heaters with up to three hea...

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    Second one is for a boiler. The three built-in temperature regulators in one controller successfully combine all the advantages of the different heat sources. Some of them are free and others are always available. For example, if the sun hasn't been strong enough during the day, you can set up the c...

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    Purposes and connection way of the controller nhc-h42 the controller is designed for combined water heaters with up to two heat exchangers and mono- phase or three-phase electrical heater. The outer and accession dimensions of the controller comply with the specifications of the water heaters produc...

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    All of the necessary temperature sensors connect to the controller: three of them measure the temperature of the water in the water heater, one in the solar collector and one in the boiler. The temperature sensors should be mounted as described in table 1. Table 1 temperature sensor temperature moun...

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    2. Design ii – water heater on when the water heater is on and ready to work, the display has the following look: all of the important parameters about the water heater's and the additional heating installations' performance are displayed on the screen. There is a clear and useful information about ...

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    4. Design iv – diagrams with information distributed hour by hour the controller displays diagrams with information about the electrical heater's and heating installation pump's performance. This is implemented with a full screen histogram. On the horizontal axis of the coordinate system are the hou...

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    Below which the heater turns on. This gives an additional tolerance for the hot and cold water to mix in the middle of the water heater and only after the water is really cooled, the electrical heater turns on. This earns more time for the solar installation to heat up the water if there is enough e...

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    Higher than the limit set in the menu el eco settings, line heater off. • if the electrical heater is off, because the temperature in the middle section of the water heater is above the set temperature in heater on, pressing and holding the button ▲ for more than 2 seconds turns the heater on. It tu...

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    Design i view. If the water heater is off, the electrical heater and the boiler's circulation pump don't turn on. The solar installation keeps working normally to avoid overheating of the solar collector. Safe modes also function normally: preventing the freezing of the tank and the solar collector ...

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    * end of the first interval (timer) that allows the heater's work * start of the second interval (timer) that allows the heater's work * end of the second interval (timer) that allows the heater's work * start of the third interval (timer) that allows the heater's work * end of the third interval (t...

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    Solar installation's circulation pump works constantly to avoid overheating of the solar collector!!! ■ s3 frost – the collector's temperature sensor has registered temperature lower than the set critical minimum temperature and it is possible the fluid to be frozen. Only modes with electrical heati...

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    A diagram for the consumed electricity, divided by hours for the previous day. A diagram for the active hours of the solar collector's circulation pump, divided by hours for the previous day. A diagram for the active hours of the boiler's circulation pump, divided by hours for the previous day. Note...

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    Work parameters settings the controller has options for settings for most of the preset parameters. While the screen is in design ii and the water heater is on, press and hold the f button for more than 1.5 seconds to enter the settings mode. The only exception of the requirement for the water heate...

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    5 work mode of the boiler's circulation pump. 6 set the differential temperatures between the boiler (the second heat source) and the water heater for turning the pump on and off for dhw priority mode. If the temperature difference between the boiler and the water heater is more than pump on, the pu...

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    • when you are not using hot water for a long time and the sun is strong in this period, do not turn the water heater off from the electrical power panel. This might damage the collector. The water heater automatically switches to holiday mode during the night to transfer the heat and therefore, it ...

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    Error messages when the water heater is on, if there are any registered errors, a blinking error sign appears in the bottom section of the screen, above the field measured and set parameters. You can see the information about the error from the field measured and set parameters. To do so, press the ...

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    Heater gets below 3°c. • automatic holiday mode for taking off the accumulated heat energy from the water heater. If the temperature of the water in the water heater is more than 85°c during the time interval set in holiday mode menu, the temperature regulator activates this mode. Its purpose is to ...

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    Pressing the f button one more time enters the initial settings menu: to change the initial settings, use the following instructions: • the field which is going to be changed is blinking • process to the next field of the same parameter by pressing ↵ button and it will start blinking • increase the ...