Trane RLC-SVU02F-E4, Руководство пользователя

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Principles of Operation of
the Module UCM-CLD
13 RLC-SVU02F-E4
2-10 V (dc)/4-20 mA input for External
Chilled-Water Setpoint (CWS) or
Current limit Setpoint (CLS)
When either external CWS or
external CLS is used on the optional
module A9, DIP switch SW1
positions 1 and/or 2 must be set to
accommodate the type of of signal
source the customer has chosen,
either 2-10 V (dc) or 4-20 mA.
Position SW1-1 sets 2-10 V (dc)/4-
20 mA for external CLS. The “OFF“
setting configures the external input
for 2-10 V (dc)/4-20 mA for external
CLS. The “OFF“ setting configures
the external input for 2-10V (dc), the
“ON“ setting configures the
external input for 4-20 mA.
Leaving Condenser-Water
Temperature control option -
Model RTWB
If the machine is delivered with the
LCWT control option (digit 49
position 3), the DIP switch on the
module A9 must be set at position
“ON.“ This option controls the
condenser (CDS) leaving-water
temperature (LCWT) based on a Hot
Water Temperature setpoint (HWSP).
Mechanical control settings
The settings for the High Pressure switch are shown below:
Pressure Switch Approval Close Open
B51 PED 19-20 bar 22-23 bar
High Pressure Czech republic
Poland
B23 PED 1.5 bar 0.5 bar
Low Pressure Czech republic
Poland
-4°C<LWTE<+15°C
B23 PED 1.2 bar 0.2 bar
Low Pressure Czech republic
Poland
-12°C<LWTE<-4°C
Figure 3 - Water Temperature Sensor Installation - Model RTWB
Compression
Fitting
Clamping Nut
Fitting Body
1/2" NPT x 1-1/2" Large Coupling
Limitations
In the heating mode, the chiller is
not able to provide chilled water for
a process. The leaving chilled-water
temperature is not controlled. The
UCM will only take care of safeties
(water flow and freezing).
The option will provide contact to
start/stop the evaporator and the
condenser pumps. Any other devices
such as valves (2 ways/3 ways), heat
exchangers, variable-volume pumps,
or other equipment will have to be
controlled by another system.
Condenser Water Temperature
Sensors - RTAD Total and Partial
Heat Recovery
UCM-CLD will not display leaving
and entering water temperature
above 70.1°C, whereas on Total Heat
Recovery units, the temperature on
the additional controller could be
higher. These conditions would
appear in cooling mode only. This is
not harmful to the operation of the
chiller.