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
transfer the heat energy from the water heater to the solar collector by turning the circulation
pump on. Due to the energy losses on the fluid's way while circulating and the energy losses
in the solar collector, when there is no sun light, the water in the water heater cools down.
Therefore, on the next day, the water heater can take heat energy again by taking it off from
the solar collector. The pump works until the temperature in the water heater gets below
30°C or until the temperature in the collector is 5 degrees lower than the one in the water
heater. This mode is indicated by a blinking
COOL
sign on the screen.
If there is a chance for the temperature to get too low or for the solar collector to overheat, it is
recommended not to turn the water heater off from the mains power supply!
Water 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 water heater it is
required to enter some information about the heater's power and whether there is an anode protector
(if the water heater is made of stainless steal it has no anode protector). By default the set
parameters are for a water heater with 3kW heating element and anode protector. If your water
heater is the same, no additional personalization is needed.
To enter the Initial settings mode press and hold F and
↵
buttons at the same time for more
than 4 seconds when the water heater is off (Design I). This operation is easier if you press the
button
↵
first and then F. After the button combination is recognized a screen with the controller's
software version appears:
The following pressing the F button enters a menu for manual control of the solar collector's
and boiler's circulation pumps. By pressing the buttons
▲
or
▼
check or uncheck the check box,
which turns the pump on or off:
NHC-H42-2 Reference Manual ver 1.6
стр. 17 / 18
Temperature regulator's
version
Software version
If the box is checked,
the solar installation's
pump works
If the box is checked,
the boiler installation's
pump works
