Installation and User Manual. Version V03.B03_EN (23/09/2015)
ecoGEO
131
ECOFOREST Geotermia
13. SPECIFIC INSTALLATION DETAILS FOR ECOGEO B HEAT PUMPS
EcoGEO heat pumps are designed to supply comprehensive heating-cooling and to produce domestic hot
water (DHW) throughout the year by means of a simple installation and guaranteeing as much energy
efficiency as possible.
EASY AND INEXPENSIVE INSTALLATION
The regulation capacity and supply temperature provided by ecoGEO heat pumps allow simplifying
significantly the heating-cooling installation. In simple installations as well as in those implying heating-
cooling systems using under-floor, fancoils or low temperature radiators, it is not necessary to have a
buffer tank. Moreover, ecoGEO heat pumps allow to produce up to two different supply temperatures just
by adding an external shunt group (modulating mixing valve + pump) controlled by the heat pump itself
and, therefore, without the need to use any additional regulation systems. These aspects allow to
simplify installation and to reduce costs significantly.
HIGHEST ENERGY EFFICIENCY
Due to their wide capacity regulation range, ecoGEO heat pumps can be adapted to the needs of
thermal energy to produce DHW, heating or cooling. The inverter technology compressor as well as the
brine and heating-cooling pumps of high efficiency and variable speed allow producing the best flow and
temperature at any time, so that the heat pump always works in the highest conditions of energy
efficiency. Moreover, ecoGEO heat pumps inverter regulation allows minimizing the equipment start/stop
cycles, which produce highest energy efficiency.
13.1. SUGGESTIONS FOR THE HEATING-COOLING CIRCUIT INSTALLATION
EcoGEO heat pumps can operate directly connected to the heating-cooling system (1 ZONE and 2 ZONE
schemes) or connected to an intermediate buffer tank (BUFFER TANK scheme). To allow the best
performance of interior comfort and optimize its energy efficiency it is suggested to connect the heat pump
directly to the heating-cooling system and control the interior temperature using indoor th-Tune type
terminals.
HEATING EMISSION SYSTEMS
Geothermal heat pumps in general and ecoGEO heat pumps in particular provide the highest energy
efficiency when they are used in heating systems using low temperature thermal emitters. This makes it
the ideal choice to install heat systems using under-floor as release system, since they require low
supply temperatures (between 30 and 35 ºC).
However, ecoGEO heat pumps allow the use of release systems which require supply temperatures up
to 55 ºC, so that they can be used in heating systems that use fancoils, convection heaters or low
temperature radiators. In this type of installations, ecoGEO heat pumps also guarantee the highest
energy efficiency. However it must be taken into account that the increase of supply temperature in the
heating system rises the energy consumption level needed to heat water and, therefore, the energy
efficiency to be obtained by the heat pump decreases. Thus, an increase in the supply temperature
between 35 ºC and 50 ºC implies a decrease in energy efficiency next to 25%. In order to mitigate this
effect, it is suggested to oversize the thermal issuers of the heating system to reduced as much as
possible the supply temperature needed and/or increase the thermal insulation of the building.
COOLING EMISSION SYSTEMS
In case of using under-floor to supply free cooling or active cooling, special care must be taken in the
design and control of the installation, since condensation problems on the floor may occur.