background image

Disconnected S5

Failure  of   the  middle  thermal  sensor   of   the  water  heater   (t5).   It  may  be  either
interrupted/disconnected or switched off.

S5 

in short-circuit

Failure of the middle thermal sensor of the water heater (t5). It is in short-circuit.

Frozen boiler

When   switching   on   the   power   the   water   in   the   water   heater   has   negative
temperature   and   may   be   frozen.  You   need   to   check   the   integrity   of   the   water
container and only then switch on the power again.

Solar unprotected

The solar installation is switched off from the menu „

Heating Installation

” and if it is

installed it may be damaged either by overheating or by freezing.

Off all heaters!

All heating sources are switched off from the menu „

Heating Installation

”. If the

solar installation is installed it may be damaged either by overheating or by freezing.
The same is true for switching off the water heater freezing protection mode.

Solar overheating

Solar collector overheating shall be registered when the t3 temperature exceeds the
temperature in the field 

„Solar overheating“

 from the menu 

„Solar protection“

Error reading image

The test for reading the images displayed on the screen is not passed. 

Anti-Legionella

Activated  mode  for  destroying  the Legionella bacteria by heating  the  water with
electric heater to 70 degrees.

Power supply off *

Latest time and date to when the thermostat is working before you interrupted power
supply.

Power supply on*

Time and date when the power supply is restored.

* These messages will be registered only if the system clock has been set.

4.3 Delete alarms (triggered by errors)

When one of any registered issues (errors) causing activation of the alarm is fine, the message that
was about it, disappears from the information field.

If all error messages disappear stops and alarm. Exceptions are issues as 

„Solar overheating“

and 

„Boiler overheating“

, to erase error messages and signals for alarm should be deleted from

the diagnostics thermostat display. To do this you must first press the key Enter twice from the main
display to enter the display  

„Diagnostics“

. Then again press  and hold  the Enter key for over 3

seconds to erase all messages concerning issues.

If any of the heating sources is not activated from the  

„Heating Installation“

  menu it shall be

displayed dimmed and the corresponding field for the temperature measured shall not be displayed.
If the electric heater is not activated, it will not be visible.

If the clock is not set, it will be displayed with hyphens: --:--. The thermostat has a battery that
supports the timing of short-term power failure. The maximum time for time support is 48 hours,
then the clock shall turn off and shall need your re-verification.

If in the middle part of the display there is not the image of Fig. 4 we recommend to reset the
thermostat by turning off power to the boiler, and then turn it on again!

17

Содержание NHC-H52M-1S

Страница 1: ...ation and operation instruction attached to your water heater unit All of the general instruction requirements concerning the water heater installation and connection to the water supply and electrici...

Страница 2: ...e listed in Table 2 Table 1 Models and features of the electronic units NHC H52M 1S NHC H52M 2 Thermostat control of the utility storage water electric heater heaters Control of the utility storage wa...

Страница 3: ...eater Each interval can be set in any day of the week to switch on and to what temperature water can be heated Control of the solar collector circulation pump power depending on the temperature differ...

Страница 4: ...tional protective conductor that never should be interrupted and or connected on the layout from the electric panel to the tank Otherwise the appliance shall not be correctly earthed and it shall redu...

Страница 5: ...unit will not work and it is very possible to damage it and increase the risk of electric shock It is necessary to secure the power cord to the power circuit of the water heater and the power cord fr...

Страница 6: ...wires in water heaters designed for wall mounting with one heat exchanger Fig 1 and with two heat exchangers Fig 2 The power cord phase conductor connects to the thermal cut out terminal labeled A1 or...

Страница 7: ...Fig 2 Single phase connection of water heaters with two heat exchangers NHC H52M 2 3 DISPLAYS SETTINGS MENUS 3 1 Main display graphics and indications Fig 3 7...

Страница 8: ...do not make any changes for a longer period between 20 seconds and 5 minutes depending on the settings menu you will automatically exit the selected menu without saving any changes made The only excep...

Страница 9: ...protection against overheating of the solar collector by automatically switching to Holiday mode to discharge the stored energy 3 5 2 On All authorized heat sources shall be switched on see menu Heati...

Страница 10: ...line but in column Off on the same line When this pump works the circulating pump on the image of the boiler on the display will rotate To protect the water tank from overheating the circulation pump...

Страница 11: ...h off There is one more operation mode for the boiler pump set from the menu Heating Installation row Boiler Pump Mode CH Priority When this mode is activated in the menu Pumps control shall be used t...

Страница 12: ...erature and it will switch on if the temperature of the lower thermo sensor t1 drops by 5 degrees less than the temperature set in Temp The timer allows exclusion of certain days of the week during wh...

Страница 13: ...temperature that can be used for any household needs but at the same time if there is a strong sun it can take as well its heat 3 10 Pumps control Temperature settings for switching on and off the pum...

Страница 14: ...accumulated heat in the water tank when you activate Holiday mode the temperature will be reduced to the value set in this field Use boiler pump NHC H52M 2 When this field is checked the discharge of...

Страница 15: ...rature settings ATTENTION When for long periods you do not use hot water and the sun is strong enough do not disconnect the water heater from the apartment electricity panel This can damage the standi...

Страница 16: ...y collected in the water heater during the day Holiday mode Solar anti frost Switched on mode for protecting the solar collector against freezing Freezing protection of the boiler Switched on mode for...

Страница 17: ...d date to when the thermostat is working before you interrupted power supply Power supply on Time and date when the power supply is restored These messages will be registered only if the system clock...

Страница 18: ...creen is the date concerning the information displayed while at the bottom is provided a summary for the day 4 5 Information By pressing the button Enter after the state Statistics by the hours shall...

Страница 19: ...thermostat shall continuously monitor the temperature as the water in the water tank and the solar collector If necessary the protection mode shall be switched on for Anti freezing protection of the...

Страница 20: ...late a new heat in order to discharge the solar collector The pump will operate until the temperature in the tank falls below the temperature set in Solar protection line Tank min temp This mode is in...

Отзывы: