5
Basic Information
General
General
Application
The AQUATOP T heat pump is de-
signed exclusively for heating and the
production of potable hot water.
With the reversible heat pump in the
AQUATOP T..R family, it can also be
used for active cooling. The heat
pump can be utilized in newly in-
stalled or existing heating systems by
complying with the usage limits as
defined by the AQUATOP planning
document.
Set-up
The heat pumps can be set up on a
smooth, level, and plane surface
without the need of a base or pedes-
tal.
The installation room must be dry and
frost-free. Rooms with high humidity,
such as laundry rooms, etc. are not
very suitable for installing the heat
pump. The minimum clearances must
be adhered to with all heat pumps to
allow access for operation and
maintenance.
How the heating mode of the brine-
water/ water-water heat pump
works:
The heat pump converts the heat
contained in the soil or rock (ground-
water) with a low temperature into
heat with a higher temperature.
This is achieved by routing the brine
liquid through a heat exchanger in the
soil (groundwater) and a pump to the
evaporator. The liquid working medi-
um in the evaporator boils and evapo-
rates at a low temperature and low
pressure. The evaporation heat re-
quired is drawn from the brine liquid
and returned to the heat exchanger.
The evaporated working medium is
suctioned by the compressor and
compressed to a higher pressure.
The compressed, gaseous working
medium is fed to the condenser
where it is condensed at a high pres-
sure and high temperature.
The condensation heat is transferred
to the heating water and the tempera-
ture of that water increases.
The energy transferred to the heating
water corresponds with the energy
previously extracted from the soil
(groundwater) plus the small amount
of electrical energy required for
compressing the working medium.
Cooling mode:
Free cooling or passive cooling
A comfortable indoor climate in sum-
mer is gaining more and more in im-
portance, especially in new buildings.
This climate can be enhanced by
means of free cooling, in which ex-
cess indoor heat is conveyed directly
to the geothermal probe or the
groundwater by means the heat ex-
changer. The cooling circuit of the
heat pump is not used for this mode
of cooling. The cooling capacity is
achieved solely through the exchange
of heat between the source of heat
and the distribution system thanks to
the installation of extra heat exchang-
er. The source pump and the cooling
circuit pump (= heating
circuit pump) operate in this mode.
Therefore, we are now able to offer
our customers an optional free cool-
ing installation set in combination with
the AQUATOP T05C.. - T14C.. heat
pump.
Active cooling with the
AQUATOP T..R..
A defined cooling capacity on the
other hand is achieved through active
cooling with the reversible heat pump
AQUATOP T..R.. in combination
distribution system suitable for hot
and cold (e.g. fan coil). As opposed to
free cooling, the compressor of the
heat pump is on during active cooling
(reverse of the cooling circuit). In the
cooling mode, the process is re-
versed.
This time the heat output side
(condenser) becomes the heat input
side (evaporator). The heat pump
works like a refrigerator during this
phase. Cooling and heating cannot
function simultaneously. In order to
keep the heat pump from shutting on
and off frequently and switching to hot
water production, the use of a cooling
buffer accumulator is highly recom-
mended. Depending on the design,
the heating buffer accumulator can be
used as the cooling buffer accumula-
tor.
Cascade:
Thanks to the new heat pump con-
trols LOGON B WP61, several heat
generators in a system can be con-
nected and be operated as a cas-
cade. Cascades with up to 4 heat
pumps, equipped with the LOGON B
WP61 controls, are no problem.
When a system is in the cascade
mode, the heat generators switch on
and off depending on the current
energy requirement: if the required
amount of energy is not being pro-
duced with the heat pump that is
currently switched on, after a certain
period of time another heat pump/
heat generator will switch on.
Energy-Saving Use of the Heat
Pump System
Your decision to obtain a heat pump
heating system is an important
contribution to saving the environ-
ment by having lower emissions and
reduce your primary energy use.
Please observe the following points to
ensure your new heating system
functions efficiently:
The heat pump heating system must
be carefully dimensioned and in-
stalled.
Avoid unnecessarily high flow temper-
atures. The lower the flow tempera-
ture on the heating side the more
efficient the heat pump is working.
Make sure the controller is set cor-
rectly and properly.
When airing out, open several win-
dows wide at once for a short period
instead of leaving windows cracked.
This will reduce the energy consump-
tion.
