Explanation Of Water Heating Operation; Mode Selection - hajdu HB300 Manuel De Mise En Service, D'opération Et D'entretien

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heating provided by appliances of type HB300(C) is controlled by the heat pump unit.
All of the three heating functions can be used simultaneously.
This appliance has two temperature sensors that are placed in the upper flare
located on the closing cover and in the lower flare. The sensor placed in the upper
flare measures the 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 is not displayed.
1.) Economy Mode:
In this mode, only the heat pump operates, as a result of pre-set water
temperature, and the electric heater is not enabled.
(The water outlet temperature is 38 to 60
environment is -7 to 43
2.) Hybrid Mode:
In this mode, the equipment splits its operation capabilities to electric heating
and heat pumping, based on the temperature of the water tank.
(The water outlet temperature is 38 to 60
environment is -20 to 43
3.) E-heater Mode:
In this mode, the motors of the compressor and the fan do not work, only the
electric heater operates. In this case, only water located in the upper part of the tank
is heated, which means approximately 100 l.
(The water outlet temperature is 38 to 60
environment is -20 to 43
a) Defreezing through water heating
In case of Economy Mode and Hybrid Mode, if the evaporating steam freezes in cold
environments, the appliance defreezes it automatically to ensure efficient
performance (3~10 min).
b) External environmental temperature
The operating temperature of the appliance may range from -30 to 43 C, and the
operating temperatures of the individual modes are as detailed below

Explanation of water heating operation

4.4.
1) Economy Mode: -7~43C
This mode is recommended when the external environmental temperature is
between -7~43C . If the external environmental temperature falls under the
temperature of -7C, energy efficiency becomes low, evidently, thus it is
recommended to use E-heating mode under these circumstances.
2) Hybrid Mode: -30~43C
3) E-heater Mode: -30~43C
In each case, only water located in the upper part of the tank is heated, which
means. approximately 100

Mode selection

4.5.
As different modes have been developed to serve different needs, it is recommended
to consider the following: .
 Economy Mode:-7~43C,
In case of continuous hot water need under 300 L (60 C);
 Hybrid Mode: -30~43C,
In case of continuous hot water need between 300 L (60C).
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