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 pump turns on and works until the difference is less than
Pump Off.
7
Set the temperature for turning on and off the boiler's
circulation pump in
CH Priority
mode. The pump turns on
when the temperature sensor in the boiler (
t4
) measures higher
or equal to
Pump On
temperature. The pump turns off when
this temperature goes below the one in line
Pump Off
.
8
Setting the time interval 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 safe mode for the solar collector. The
solar installation's circulation pump turns on if the temperature
is lower than 4°C!
10
Time setting
11
Setting the date in format dd-mm-yyyy
12
Setting the display's contrast. If the display is too light, or if it is
streaked, you can try to improve its appearance by changing the
contrast.
Caution:
•
Using the electrical power panel for turning on and off the water heater, doesn't change the
set temperature and the water heater's last work mode before the turning off. If the water
heater was on, after turning it off and then on again, it will be on the same mode with the
same set temperature.
NHC-H42-2 Reference Manual ver 1.6
стр. 14 / 18
