REMKO CMF 320 Duo - Manual (Page 7)

Evaporation Liquefying
Condensing
Decompression
Functional diagram heating
inverter heat pump
Heating pump outdoor unit
Outdoor area
Heat pump indoor unit
Indoor area
A heat pump is a device which
makes use of a working medium
to absorb ambient heat under low
temperatures and transports this
heat to a place where it can be
of use for heating purposes. Heat
pumps work according to the same
principles as a refrigerator. The
difference is that heat, the by-
product of the refrigerator, is the
goal of the heat pump.
The main components of the
cooling circuit consist of an
evaporator, a compressor,
a condenser and an expansion
valve.
In a finned evaporator,
the refrigerant evaporates both
because of lower pressure and
because of lower heat-source
temperatures through absorption
of energy from the environment.
In the compressor, the refrigerant
is brought to a higher pressure and
temperature by the application
of electrical energy.
Next, the hot refrigerant gas
reaches the condenser, a plate
heat-exchanger. Here the hot gas
condenses, transferring heat to Heat pump modes
Heat pumps can work in various
operating modes.
Monovalent
The heat pump the only source of
heat for a building all year round.
This mode is particularly suitable
for heating plants with low supply-
water temperatures and is primarily
used in combination with brine/
water and water/water heat
pumps.
Single energy source
The heat pump has an E-heater
to handle peak loads. The heat
pump covers the majority of
the required heating power.
Occasionally, when it is extremely
cold outside, an electrical booster-
heating system switches on as
required in order to support the
heat pump.
Bivalent parallel
The heat pump provides
the entire heating energy down
to a predetermined outdoor
temperature. If the temperature
drops below this value, a second
heat source switches on to support
the heat pump.
There is a distinction to be
made here between alternative
operation
with oil- or gas heat and
regenerative operations with solar
energy or wood-fired heating.
This mode is possible for all heating
systems.
the heating system.
The liquefied refrigerant then
expands and cools in a flow
regulator, the expansion valve.
Then the refrigerant flows into the
evaporator once more and the cycle
is complete.
For control, a heat-pump manager
is included which ensures the
independent operation of all safety
devices.
The water-circulation system of the
Series CMF consists of a charging
pump, plate heat-exchangers, dirt
traps, a manometer, fill- and drain
valves, an automatic air-bleeder
and flow monitor.
The CMT series has, in addition,
a 3-way switching valve and
a buffer storage.
Wall- and floor consoles,
condensate pans, condensate-pan
heating, a 3-way switching valve,
a bypass valve and other sensors
are available as accessories.
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