Water Heating Methods - LEGALLAIS HB300 Manuel De Mise En Service, D'opération Et D'entretien

(COP). COP is the ration of incoming energy into the appliance (in this case, it is the
heat transferred to the water to be heated) to the electric power used (by the
compressor and the supporting equipment of the appliance). COP may change
depending from the type of the heat pump and the related operational
circumstances. A value of 3 for COP means, for example that the heat pump
transfers 3 kWh to the material to be heated after 1 kWh electric power used, from
which 2 kWh is extracted from the free source. The rated COP values of HB300 heat
pump water heater are listed in table 2.10.1 containing technical data.
The temperatures of typical heat pump cycles, in connection with features of
the cooling fluid and the free source ensure heating of sanitary water located in the
aluminium pipe heat exchanger placed outside of
HB300 heat pump water heater up to a temperature of max. 60°C, besides normal
usage conditions. As HB300 heat pump water heater has been equipped with a
supplementary pipe radiator that provides further options: quicker obtaining of
operation with full capacity through combination of heat pump mode and pipe
radiator mode up to a temperature of max. 60°C that may be used after running of
antibacterial protective cycles. In order to ensure rational energy use during the
operation of the hot water tank, visual indicators call the attention of the user on the
fact that the appliance is not operated in the most efficient way if the pipe radiator is
active.
4.3.

Water heating methods

The appliance (in case of HB300C type) integrates heating elements that contain a
heat pump, an electric pipe radiator and a heat exchange pipe coil. Heating elements
do not operate all the three in the same time. Hot water tanks of HB300C type can be
operated from several different energy sources: indirectly from solar energy, or gas-
based, coal-based or other based energy carriers, furthermore, auxiliary electric
heating provided by appliances of HB300 type is controlled by the heat pump unit.
This appliance possesses two temperature-sensors that are placed in the
upper flare located in the closing cover and in the lower flare. The sensor placed in
the upper flare measures upper temperature and this number is displayed by the
Water temp indicator, while the sensor placed in the lower flare monitors the lower
temperature, which serves as input data for switch on/ off, but this is not displayed at
all.
Economy Mode:
1.)
In this mode, it is the heat pump that is working, not the electric heater as a
result of pre-set water temperature.
(The water outlet temperature is between 38~60°C, the operation environment temperature is between -
7~43°C)
Hybrid Mode:
2.)
In this mode, the equipment is sharing its operation capabilities between
electric heating and heat pump, based on the temperature of the water tank.
(The water outlet temperature is between 38~60°C, the operation environment temperature is between -
30~43°C)
E-heater Mode:
3.)
In this mode, the motors of the compressor and the fan are not working, only the electric heater is
working. This time, only water located in the upper part of the tank is heated, which means.
approximately 100 l.
(The water outlet temperature is between 38~60°C, the operation environment temperature is between
-30~43°C)
a) Defreezing through water heating