3
Design and function
3.1 Unit description
The ML 263 DC-523 DC room air conditioners
have a REMKO ML...AT outdoor unit as well as an
ML...IT indoor unit.
In cooling mode, the outdoor unit serves to output
the heat extracted by the indoor unit from the room
being cooled. In heating mode, the heat taken up
by the outdoor unit can be discharged by the
indoor unit into the room to be heated. In both
operating modes, the output produced by the com-
pressor precisely matches requirements, and
thereby regulates the nominal temperature with
minimal temperature deviations. This "inverter
technology" results in energy savings over conven-
tional split systems and also reduces noise emis-
sions to a particularly low level. The outdoor unit
can be installed in an outdoor area or, providing
that certain requirements are met, an indoor area.
The indoor unit is designed to be mounted high up
on the wall, in indoor areas. It is operated by an
infrared remote control.
The outdoor unit consists of a cooling cycle with
compressor, fin condenser, condenser fan,
reversing valve and throttle element. The outdoor
unit is controlled by the controller in the indoor unit.
The indoor unit consists of a fin evaporator, evapo-
rator fan, controller and condensate tray.
Floor brackets, wall brackets, refrigerant piping and
condensate pumps are available as accessories.
2
1
4
3
Fig. 9: Cooling cycle diagram for indoor unit
1: Evaporator
2: Evaporator fan
3: Suction pipe connection
4: Liquid line connection
2
1
4
3
5
7
8
9
6
Fig. 10: Cooling cycle diagram for outdoor unit
1: Condenser
2: Condenser fan
3: Reversing valve
4: Compressor
5: Filter dryer
6: Capillary tube throttle element
7: Pressure gauge connection
8: Suction pipe connection valve
9: Liquid line connection valve
1
7
8
9
B
A
4
3
5
6
2
3
5
Fig. 11: System layout
A: Outdoor area
B: Indoor area
1: Indoor unit
2: Outdoor unit
3: Condensate drainage line
4: Condenser fan
5: Power supply
6: Shut-off valve
7: Suction pipe
8: Liquid line
9: Control line
Refrigerant piping is used to connect the indoor
unit to the outdoor unit.
REMKO ML...DC
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