Naturela NHC-H42-2, User Manual

Page 1: ...ller has a contrast LCD display four control buttons and a LED indication for the electrical heater NHC H42 has a built in electronic temperature regulator to control a mono phase or three phase elect...

Page 2: ...t day Prevents the freezing of the water heater or of the solar collector Information about the condition of the anode protector Information if higher than 30mA leakage from the electrical heater to t...

Page 3: ...an electrical heater and two differential temperature regulators adapted for a solar collector installation and a heating installation with a boiler or a fireplace The difference in the differential t...

Page 4: ...on the main screen The display has four main screen designs They show different screen view for the main work conditions of NHC H42 Water Heater Off Water Heater On Settings and Graphics 1 Design I Wa...

Page 5: ...the temperature measured by the temperature sensor in the bottom section is displayed in this field Since the hot water goes up to the top section of the water heater and then to the pipes it is poss...

Page 6: ...llation When the pumps are on and the differential temperatures t1 and t2 go below the limits set from the menu Dif Temp 1 2 line Pump Off the relevant circulation pump turns off To help the outer hea...

Page 7: ...upper one appears on the display For the boiler s installation DHW priority mode boiler s circulation pump turns on if t2 or the temperature of the boiler t4 has to be higher than the temperature in t...

Page 8: ...electrical heater is activated from the menu System Setting its turning on and off depends on the temperature in the bottom section of the water heater measured by Sensor 1 When changing the differen...

Page 9: ...eater s control By pressing the View Enter button all the possible data appears successively in the following order Set temperature for heating with the electrical heater Temperature measured in the b...

Page 10: ...heater It is broken or disconnected S1 E2 A breakdown in the temperature sensor in the bottom section of the water heater It is on short circuit S1 Frost On turning on the power the temperature of th...

Page 11: ...oleness before turning it on again S5 E1 A breakdown in the water heater s middle temperature sensor It is broken or disconnected S5 E2 A breakdown in the water heater s middle temperature sensor It i...

Page 12: ...r Changing the set temperature Further pressing any of the same buttons changes the set temperature in the relevant direction The View Enter button saves the new settings and the screen goes back to i...

Page 13: ...the changes made on the current parameter Setting menus appear in the following order 1 Setting the temperature for turning on and off the electrical heater if it has been activated It turns on when t...

Page 14: ...terval when the pump can turn on to transfer the heat energy to the solar collector on Holiday mode This interval must be during the night for this mode to make sense 9 Turns on off the anti frost saf...

Page 15: ...stem Settings If you still have no boiler or solar installations you can deactivate them Moreover if you don t want the water heater to use electricity for the electrical heater you can disable it too...

Page 16: ...reen view is in Design I press and hold for more than 2 seconds the F button to enter Settings mode menu Clear Errors By pressing the button select line Yes and press F again to save your choice and g...

Page 17: ...ter heater s initial settings The temperature regulators NHC H42 are designed for different types of water heaters The necessary personalization is not made in the factory and after you instal your wa...

Page 18: ...s to the next field of the same parameter by pressing button and it will start blinking increase the value of the blinking field by pressing the button and decrease it by pressing the button pressing...