Trane RTHD

74 RTHD-SVX01D-EN
Installation Electrical
LonTalk Communication Interface - Optional
CH530 provides an optional LonTalk Communication Interface (LCI-C)
between the chiller and a Building Automation System (BAS). An LCI-C LLID
shall be used to provide "gateway" functionality between the LonTalk protocol
and the Chiller.
Ice Making Contact - Optional
CH530 accepts a contact closure input to initiate Ice Building. When in the
ice building mode, the compressor will be fully loaded (not given a low set-
point) and will continue to operate until the ice contacts open or the return
water temperature reaches the Ice Termination Setpoint. If terminated on
return setpoint, CH530 will not allow the chiller to restart until the ice making
contact is opened.
Ice Machine Control - Optional
CH530 provides an output contact closure that can be used as a signal to the
system that ice building is in operation. This relay will be closed when ice
building is in progress and open when ice building has been terminated by
either CH530 or the remote interlock. It is used to signal the system changes
required to convert to and from ice making.
External Chilled Water Setpoint - Optional
Ch530 will accept either a 2-10 VDC or a 4-20 mA input (J9-4, J9-5) signal, to
adjust the chilled water setpoint from a remote location.
External Current Limit Setpoint - Optional
CH530 will accept either a 2-10VDC or a 4-20mA input (J7-11, J7-12) signal to
adjust the current limit setpoint from a remote location.
Percent Condenser Pressure Output - Optional
CH530 provides a 2-10 VDC analog output to indicate percent High Pressure
Cutout (HPC) condenser pressure.
Percent HPC = (Condenser Pressure/High Pressure Cutout Setpoint)*100
Compressor Percent RLA Output - Optional
CH530 provides a 2-10 Vdc analog output to indicate % RLA of compressor
starter average phase current. 2 to 10 Vdc corresponds to 0 to 120% RLA.