the water temperature in the boiler exceeds 50 degrees.
•
Automatically activated Holiday mode
(
NHC-H52M-1S / NHC-H52M-2
). Serves to
discharge the accumulated heat in the water tank. This option is activated by marking
from the menu
„Solar protection“
, line
„Auto Holiday mode“
. If after 21 o'clock the
water temperature in the middle of the water heater (measured by t5) is over 77 degrees
in the absence of hot water consumption, the temperature gets above 60 degrees, will
prepare switching on to this mode. Consequently, in the interval between 00:00 and 5:00
the system shall switch on the solar and the boiler pumps if this is allowed. The purpose is
to begin the transfer of heat from the water heater to the solar and due to existing energy
losses through the pipes and into the solar collector when there is no sun, to cool off the
water in the water heater. Thus again the next day will have the opportunity to accumulate
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 indicated with caption
„Heat release“
in the field
„Additional
features“
on the screen. For faster discharge of heat from the heater possible use in
parallel and the boiler pump, which is activated by marking menu
„Solar protection“
, line
„Use boiler pump“
.
IMPORTANT!
When there is danger from temperature fall or overheating of the collector, it is
recommended to keep the water heater connected to the mains!
5.2. Holiday mode
Only the solar installation and the protective regimes shall remain active. Besides the normal
operation of the solar during the day it will include a compulsory regime for discharging heat from
the heater at night. This mode will be particularly useful if you know that you will be away from home
for long and there will be no demand for hot water. In this situation the tank can not accumulate
infinite heat and will need periodically to discharge in order to cool the solar during the day.
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