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 energy.
Turning the water heater on
When the water heater is off and the controller's screen is in Design I view, by pressing the F button
(On/Off/Set) the water heater turns on, the screen's brightness gets increased and the screen view
goes to Design II.
If the requirements for heating up the water heater are implemented, all of the allowed heat sources
will be activated (see Configuration of the allowed for use heat sources). The requirements for
heating up are as follows:
•
For the
solar collector's
installation: the solar collector's circulation pump turns on if
∆
t1
or
the temperature of the collector (t3) is higher than the temperature in the middle of the water
heater (t5) with as many degrees as it is set in the menu
Dif Temp 1,
line
Pump On
.
The
pump works until
∆
t1
gets less or equal to the degrees set in the menu
Dif Temp 1,
line
Pump
Off.
While this installation is working, an animated spinning of the solar installation's
circulation pump (the 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 the top section of the water heater
t2
with as many degrees as it is set in the menu
Dif Temp 2,
line
Pump On
.
The pump works
until
∆
t2
gets less or equal to the degrees set in the menu
Dif Temp 2,
line
Pump Off.
While this installation works, an animated spinning of the boiler installation's circulation
pump (the bottom one) appears on the screen;
•
CH priority
mode –
boiler's circulation pump turns on if its temperature (
t4)
gets higher
than the temperature set in the menu
CH Setup,
line
Pump On.
The pump turns off when
t4
gets lower than the temperature set in the menu
CH Setup,
line
Pump Off.
While this
installation is working, an animated spinning of the boiler's installation circulation pump
(the bottom one) appears on the display.
•
For the
electrical heater
:
•
the electrical heater turns on when the temperature
t5
in the middle of the water
heater gets below the limit set in the menu
EL Eco Settings,
line
Heater On
and turns
off when the temperature
t1
in the bottom section of the water heater gets equal or
NHC-H42-2 Reference Manual ver 1.6
стр. 7 / 18
Information about
the solar installation
Information about
the boiler installation
Information about the
heater's work mode and
the following turning On/Off
Moving bubbles indicate
the working heater
