Module Power and Miscellaneous I/O
RTHC-SVD01B-EN 75
J20-1, 2 Programmable Relay Output #3 Customer programmable annunciation Relay
J22-3, (Hot)
J22-1(NO) &
1K11 or 1K400-33,34
(NO)
Master Oil Line Solenoid Valve NO output controls NC Solenoid Valve in
Service Override (Stop mode only) to allow for
Oil Charging procedure. Otherwise in normal
modes, solenoid is controlled by Relay 1K11 to
open when compressor runs, and close when
compressor stops.
J24-2(Hot),1(N) High Pressure Cutout Switch NC contact is hardwired into compressor starter
circuit, NO contact is wired to this input for HPC
sense
Trip at 180±5 PSIG
J26-1, 2 Chilled Water Flow Switch input open: 115 VAC - means no flow
closed: <5 VAC - means flow
(Software imposes a 6 second delay before
responding to an open or closed contact.)
J28-1, 2 Condenser Water Flow Switch
input
open: 115 VAC - means no flow
closed: <5 VAC - means flow
(Software imposes a 6 second delay before
responding to an open or closed contact.)
Table 13-3: Chiller Module Nominal Terminal Input and Output (1U1)
Terminal
Designation
Description of Circuit
Normal Terminal Voltages for Various
Conditions
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