Johnson Controls YORK YMC2 - Commercial Acid Cleaning; Testing for Evaporator and Condenser Tube Leaks

Table 111: RS-232 pin assignments (DB9 PC signal set) for most laptops
Pin Description
Pin 5 Signal ground
Pin 6 Data set ready
Pin 7 Request to send
Pin 8 Clear to send
Pin 9 Ring indicator
Figure 78: Communications block diagram
A serial cable to go from the OptiView Control Panel to the serial port is available from the parts
center (P/N 375-90490-231).
Figure 79: OptiView panel to PC serial cable
Callout Description Callout Description
A Black wire D Green wire
B Red wire E Drain wire
C White wire
167
YMC
2
Mod B with OptiView Control Center