Transport And Packaging; System Description - REMKO KWL 130 Operation Manual

Transport and
packaging
The equipment is shipped in sturdy
transport packaging. Immediately
check the equipment on delivery
and make note of any damage or
missing parts on the delivery note
and inform the forwarding agent
and your contractual partner.
Claims under guarantee made at
a later date will not be accepted.

System description

In cooling mode, the unit (an air
to water chiller) takes heat out
of the operating medium to be
cooled, water or a mixture of
water and glycol, within a closed
medium circuit in the evaporator
(plate heat exchanger) and gives
it off to the closed cooling circuit.
As a consequence of the heat
exchange, the medium cools and
the refrigerant in the cooling circuit
vaporises under low pressure.
The gaseous refrigerant
enters an electric compressor
(scroll construction) which
increases the pressure and the
Construction
KWL 130 - KWL 220
Cooling mode
13
12
17
10
11
9
8
temperature of the refrigerant.
The gaseous refrigerant is
led into a finned condenser,
which, as a consequence of the
heat exchange, condenses the
refrigerant under high pressure to
a liquid. The air emerging at the
condenser heats the environment.
The liquid refrigerant is led by
means of a variable injector valve
back to the evaporator where the
circuit begins again.
In heating mode, an air-cooled
chiller with heat pump functions
(HP-function) can take up heat
from the ambient air in the finned
condenser and give it off to the
operating medium. A reversing
valve switches the cooling circuit
function.
A return temperature dependent,
adaptive control, which ensures
the unit's operation and all of the
safety functions, is used to control
the cooling or heating. A potential-
free contact provides for remote
enabling.
The unit is designed for outdoor
installation. Under certain circum-
stances, it can also be used indoors.
The unit cooling circuit comprises
14
3
4
6
15
5
16
9 8
7
2
1
an evaporator, compressor, thermal
injection valve, condenser, con-
denser fan, fan control system and
high and low pressure controllers
Units with heat pump function also
have a reversing valve and a col-
lecting flask.
The medium circuit comprises
a circulation pump, expansion
vessel, safety valve and differential
pressure switch. A storage tank is
not mandatory.
Winter pressure controls, cabled
remote control, crank case heat-
ing, vibration dampers, heaters
for anti-freeze protection, external
medium storage tanks, glycol con-
centrate and a technical handover
are available as accessories.
Legend:
1 Circulation pump
2 Manual bleeder
3 Plate evaporator
4 Differential pressure switch
5 Diaphragm expansion vessel
6 Safety valve
7 Compressor
8 Pressure monitor
9 Schrader valve
10 Fin condenser
11 Condenser fan
12 Filter dryer
13 Schrader valve
14 Thermal expansion valve cooling
15 Sensor medium intake
16 Sensor medium outlet
17 Fan control sensor
5