Specifications

InRow Air Cooled RD Installation28
User interface connections

A-Link ports: Pin 1 = High; pin 2 = Low;
Pins 3,6 = Perf Power; Pins 4, 5 = Ground

NO (normally open contact)

Reset button

COM (common contact)

Network port

NC (normally closed contact)

Shield/ground

RS-232 console port

A- = True

OHE (outdoor heat exchanger) alarm input -
(not used)

B+ = True

OHE alarm input + (not used)

Shutdown -

OHE COM (optional*)

Shutdown +

OHE NO port (optional*)

24 VDC (bias)

Leak detector port (AP9325)

12 VDC (bias)

Remote temperature sensor

Return (bias)
* To avoid unnecessary condenser operation when the ambient temperature exceeds 43° C (110° F), connect
these leads.
na2688a
Shutdown input
contacts and alarm
output contacts
Control
Modbus
OHE