3 Design and function
3.1 Domestic hot water heat pump,
general
Arguments in favour of the domestic hot water
heat pump from REMKO
n Hot water heat pump with advanced tech-
nology guarantees optimum and extremely
quiet operation.
n The powerful radial fan enables air guidance in
pipe lengths of up to 6 m supply air/6 m
exhaust air with Ø 150 mm.
n The side angled air connections enable the
heat pump to be installed even if the ceiling
height is low (< 2 m).
n The thermostatic expansion valve and the
safety devices ensure optimum circuit function-
ality
.
n The heart of the hot water heat pump: The
strong and durable condenser with oil cooler
and waste heat utilisation through suction gas
cooling.
n Large-area finned evaporator.
n The air connections enable a simple supply/
exhaust air installation at the assembly site.
n Environmentally friendly and non-flammable
safety refrigerant R134A.
n Enamelled quality hot water tank. Quality
assurance guarantees a long service life, sacri-
ficial false anode for increased safety.
n Tube coil condenser ensures efficient heat
transfer and optimum safety.
n Internal smooth tube heat exchanger for the
connection of solar collectors or boilers.
n Electric heater, factory installed.
n Negligible maintenance costs.
Function of the hot water heat pump
The hot water heat pump utilises ambient air for
hot water preparation. The air is drawn in from
above with the aid of a fan, supplied to the evapo-
rator and subsequently blown out again at the top.
The evaporator is so-called, because it evaporates
the refrigerant in the heat pump circuit. During
evaporation, heat is taken from the ambient air
drawn in, because this is warmer than the refrig-
erant in the evaporator
. This means that heat can
be obtained from the air and transferred to the
refrigerant even at relatively low temperatures. The
refrigerant is compressed by the condenser, and
brought to a higher temperature level. This heat is
transferred to the drinking water via the tube coil
condenser. The cooled refrigerant, which is once
again liquid in state, is expanded in the expansion
valve, transported to the evaporator and is there-
fore able to absorb heat once again.
NOTICE!
The storage tank must be completely filled and
bled for initial commissioning.
NOTICE!
The heat-up phase may take some time,
depending on the filling water temperature and
air intake temperature.
The refrigerant circuit
The hot water heat pump operates according to
the Carnot process. The refrigerant circuit is filled
with refrigerant R134a in the factory
, is highly effi-
cient and guarantees optimum safety and effi-
ciency in operation.
3.2 Product description
The Remko RBW 301 PV is a domestic hot water
heat pump with integrated enamelled hot water
storage tank. The storage tank has a volumetric
capacity of 300 l. The RBW 301 PV is easy to
install due to the practical pipe connections and
plug-in electric wiring, e.g. in the basement, plant
room or utility room.
The Remko RBW 301 PV-S is a domestic hot
water heat pump with an additionally integrated
heat exchanger with 1.5m
2
, for the connection of a
solar plant or another heat generator.
During pure heat pump operation, the max.
drinking water temperature is 60 °C. This means
that a high level of drinking water hygiene can be
guaranteed. With an increased demand for hot
water or high temperatures, it is possible to actuate
the 1.5 kW electric heating element.
REMKO GmbH & Co. KG herewith confirms
that the supplied product corresponds to the
UBA (German Environment Agency)
positive list
.
13
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