System Layout - REMKO KWK Series Operation,Technology,Spare Parts

REMKO KWK / KWK-ZW

System layout

The unit is designed
for a 2-conductor system.
The unit can easily be upgraded
to a 4-conductor system using
a heating coil available as
an accessory.
The 2-conductor system has
2 medium pipes (conductors:
supply and return flow) for
cooling using a cold medium and
2 medium pipes for heating using
a warm medium. In cooling mode
the combined cooling / heating
heat exchanger in the indoor unit
extracts the heat from the room air
by absorbing it into the operating
medium. A circulation pump
transports the heated medium to
a chiller which extracts the heat
from the medium in an evaporator
and then passes it on to the
outside air via a cooling cycle in
a condenser. The cooled operating
medium is then fed in once again
to the unit medium circuit.
With 2-conductor systems, which
are used for cooling or heating,
the heating capacity of cold water
air-conditioning systems can be
generated through a chiller with
heat pump function or, in the case
of heating systems, through
a boiler or heat pump and fed into
the circuit. In heating operation,
the indoor unit can deliver the heat
from the operating medium
to the room air.
With 4-conductor systems, which
are used for cooling or heating,
in one system, both a cooling
capacity from a chiller and
heating capacity from a separate
heating system on the indoor
units in an another system
are simultaneously present.
6
Example of system layout of 2-conductor system (heat pump system)
Indoor area 1
Chilled / heating water
Consumer
Condensate
collecting drainage
Condensate
pipe
Room temperature controller
Outdoor area
Inverter heat pump
Outdoor unit
Refrigerant
pipes
Not exhaustive
Example of system layout of 4-conductor system (cold water air conditioning system)
Indoor area 1
Chilled / heating water
Consumer
Condensate
collecting drainage
Condensate
pipe
Room temperature controller
Outdoor area
Chiller
Medium piping
cooling mode
Medium outlet
Medium inlet
Not exhaustive
Indoor area 2 Indoor area 3
Chilled / heating water Chilled / heating water
Consumer Consumer
Condensate
pipe
Room temperature controller Room temperature controller
Medium piping
Cooling or heating mode
Inverter heat
pump
Indoor unit
Indoor area 2 Indoor area 3
Chilled / heating water Chilled / heating water
Consumer Consumer
Condensate
pipe
Room temperature controller Room temperature controller
Heating room
Condensate
pipe
Buffer tank
Condensate
pipe
Medium piping
heating mode
Boiler