Description; Operation Principal Of The Solar / Heat Pump Combined System; Control By Temperature Gap; Energy Source Management - Technibel LIBERTY300 SOLAR Installation And Operating Instructions Manual

2 DESCRIPTION

2.1 - Description
2.1.1 - Operation principal of the solar /
heat pump combined system
LIBERTY300 Solar
• is composed of a hot water tank, a solar
heat exchanger, components of the refrigerating circuit, the
air circuit and of the water circuit, as well as all the control,
settings and monitoring panels designed for automatic
functioning.
• the solar heat exchanger is located in the bottom part of
the tank. This heat exchanger must be connected to one or
more solar collector (not included). A pump (not included) is
necessary to make the uid circulate in the solar circuit.
• Solar components must be installed according to speci cations
and instructions of the manufacturer.
LIBERTY300 Solar
• is equipped with an air to water heat
pump, used as back up. When solar energy is no more available,
the heat pump starts and heats the water to the temperature
setting with up to 3 times less energy than electric heater.
• An additional electric heater (1500W) located in the middle
of the tank will be used in case of air temperature out of the
operating range of the heat pump, and when solar is not
running.

2.1.2 - Control by temperature gap

LIBERTY300 Solar
has di erent temperature sensors in the
tank and in the solar collector. When the temperature di erence
between the collector and the tank increases, the pump starts
and heat recovery from the sun energy begins.
When the temperature gap between collector and water is too
low, the pump stops, avoiding energy losses.

2.1.3 - Energy source management

LIBERTY300 Solar
• has a single controller for managing the
di erent energy sources: solar and heat pump. The heat pump
starts when the temperature setting is not reached and when
solar energy is not available.
• A drop in the aspiration temperature provokes a diminishing
in the performance of the heat pump and a prolonging of the
heating time for domestic hot water (see Fig.28 & 29 in the
appendix). A sensor measures the temperature of the aspired air
directly in the upstream from the evaporator of the heat pump.
When this temperature descends below the limit of -7°C, the
water is no longer heated by the heat pump but by the electrical
backup.
• The exible isolated air sheathing (ND160, max total lenght
10m with exible duct or ND160 max total lenght 20m with
rigid ducts) can be connected to the connection anges on
LIBERTY300 Solar.
To insure an e cient functioning of the
heat pump, it is of general convenience to avoid all mixture
between input and output air. One of the possible solutions is
to use an elbow joint at the opening of the output.

3.1 - Dimensions

3.2 - Placement

To be considered when choosing the nal placement:
- INSTALLATION GUIDE 10.13.19.GB.03 -

3 INSTALLATION

3.2.1 - Air take

D.W.H.P
• must not be installed outdoor
D.W.H.P
• must be installed in a room outdoor from
frost. Also, the temperature of the air taken in must
range between -7°C and 35°C. When the temperature
is below -7°C or above 35°C, the water is no longer
heated by the heat pump, but by the electrical backup.
• inlate air must be clear of any pollution, and dust.
• The air taken in must not originate from a heated room.
• The device must not be placed in a room which risks
explosion due to gases, vapours or dust and must not
intake air from rooms with the same risks.
• For a higher sound comfort avoid installation near
bedrooms.
3