REMKO KWL 130 H - Manual (Page 24)

Configuration antifreeze protection parameters
It can be necessary to reconfigure the anti-freeze protection parameters
when using a water-glycol mixture. In the menu item Ar the parameter
Ar 03 can be changed within the limits of parameters Ar 01 and Ar 02
without password input.
Factory setting:
Lower anti-freeze protection setting Parameter Ar 01 = +3°C
Upper anti-freeze protection setting Parameter Ar 02 = +7°C
Activation anti-freeze protection fault Parameter Ar 03 = +4°C
The following program sequence must be programmed.
If a lower anti-freeze protection setting below the possible limits of pa-
rameter Ar 01 is necessary, a lower setting can be made after password
input. For this purpose, please contact REMKO. The following values
must then be input:
Configuration parameter Ar 03
5 seconds short short short short
short
short
change value 5 seconds short
Diaphragm expansion vessel (MAG)
To avoid pressure fluctuations
during standstill because of
temperature changes, diaphragm
expansion vessels filled with
nitrogen (moisture neutral) must
be integrated in the system.
The unit's standard equipment
includes one diaphragm expansion
vessel. The preliminary pressure
must be set on the system; an
increase in volume or, in the event
of the realisation of a cooling-
heating system, the installation
of another diaphragm expansion
vessel may be necessary.
Safety valve
Safety valves limit excess operat-
ing pressure due to excess warm-
ing or overfilling of the operating
medium. The valve outlet requires
unobstructed draining into a drain
line. Applicable local disposal ordi-
nances must be observed if glycol
is used.
The unit's standard equipment
includes one safety valve.
Compensators
Compensators are used to connect
lines to the unit to prevent vibra-
tion in the chiller from transmitting
to other parts of the system.
Compensators
Shut-off valve Compensator
Structural
fastening KWL
connection
Shut-off valves
As a rule, in cold water systems,
shut-off valves with full admission
should be used. For the purpose
of servicing, medium intake and
medium outlet must be equipped
with shut-off valves (if necessary
safety valves).
0% Ethylene
glycol
(Factory setting)
10 % Ethylene
glycol
(Password)
20 % Ethylene
glycol
(Password)
30 % Ethylene
glycol
(Password)
35 % Ethylene
glycol
(Password)
Value Ar 01 3°C -2°C -6°C -15°C -19°C
Value Ar 03 4°C 0°C -4°C -13°C -17°C
Air bleeding valves
The unit has manual air bleeding
valves. The unit can be vented
separately after the system
has been filled. Automatic air
bleeder must also be installed at
the highest point in the collective
lines.
Glycol suitable valves are
necessary when using medium
that contain glycol.
! CAUTION
REMKO KWL (H)
24