Johnson Controls YORK OPTIVIEW YK Series Service Instructions Manual page 183

FORM 160.54-M1
minutes to maintain the setpoint to the desired value.
If a contact closure is not received within 30 minutes
of the last closure, the setpoint is defaulted to the Lo-
cal setpoint value. A closure is only accepted at rates
not to exceed once every 70 seconds. The setpoint is
calculated as follows:
Offset(°F) = (PW – 1)(Remote Reset Temp Range)
Where PW = Pulse Width in seconds
Setpoint (°F) = Local Setpoint - Offset
JOHNSON CONTROLS
10
SECTION 21 - REMOTE SETPOINTS
RS-232
As shown in Figure 11, a setpoint can be received in
serial form at the microboard COM4B serial port (J2)
from the E-Link Gateway. Select ISN Remote Mode.
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