YORK INTERNATIONAL
123
FORM 150.62-NM7 (103)
RECEIVED DATA (CONTROL DATA)
The Middle Market receives 8 data values from the
ISN. The fi rst 4 are analog values and the last 4 are
digital values. These 8 data values are used as con trol
pa ram e ters when in RE MOTE mode. When the unit is
in LO CAL mode, these 8 values are ignored. If the unit
re ceives no valid ISN trans mis sion for 5 min utes it will
re vert back to all local control values. Table 40 lists the
5 control pa ram e ters. These values are found under
fea ture 54 on the ISN.
TRANSMITTED DATA
After receiving a valid transmission from the ISN, the unit
will transmit either op er a tion al data or history buff er data
de pend ing on the “History Buffer Re quest” on ISN PAGE
10. Data must be trans mit ted for every ISN page un der
fea ture 54. If there is no value to be sent to a par tic u lar
page, a zero will be sent. Tables 41 - 43 show the data
val ues and page listings for this unit.
ISN CONTROL
TABLE 41 – ISN TRANSMITTED DATA
ISN
TYPE DATA
PG.
P11 Analog Leaving Chilled Liquid Temp
P12 Analog Return Chilled Liquid temp
P13 Analog –
P14 Analog –
P15 Analog SYS 1 Suction Temp (EEV Only)
P16 Analog Ambient Air Temperature
P17 Analog SYS 1 Suction Superheat (EEV Only)
P18 Analog SYS 1 Run Time (seconds)
P19 Analog SYS 1 Suction Pressure
P20 Analog SYS 1 Discharge Pressure
P21 Analog SYS 1 Cooler Inlet
Refrigerant Temp (R-407c Only)
P22 Analog –
P23 Analog SYS 1 EEV Output % (EEV Only)
P24 Analog SYS 1 Anti-Recycle Timer
P25 Analog Anti-Coincidence Timer
P26 Analog SYS 2 Suction Temp. (EEV Only)
P27 Analog SYS 2 Run Time (seconds)
P28 Analog SYS 2 Suction Pressure
P29 Analog SYS 2 Discharge Pressure
P30 Analog SYS 2 Cooler Inlet
Refrigerant Temp (R-407c Only)
P31 Analog –
P32 Analog SYS 2 Suction Superheat (EEV Only)
P33 Analog SYS 2 Anti-Recycle Timer
P34 Analog SYS 2 EEV Output % (EEV Only)
P35 Analog Number of Compressors
P36 Digital SYS 1 Alarm
P37 Digital SYS 2 Alarm
P38 Digital Evaporator Heater Status
P39 Digital Evaporator Pump Status
P40 Digital SYS 1 Comp 1 Run
P41 Digital SYS 2 Comp 1 Run
P42 Digital SYS 1 Liquid Line Solenoid Valve or
EEV Pilot Solenoid
P43 Digital SYS 1 Hot Gas Bypass Valve
P44 Digital SYS 1 Comp 2 Run
P45 Digital SYS 2 Comp 2 Run
P46 Digital SYS 2 Liquid Line Solenoid Valve
or EEV Pilot Solenoid
P47 Digital Lead System (0=SYS 1, 1=SYS 2)
P48 Digital SYS 1 Comp 3 Run
3
ISN CONTROL DATA
PAGE
P03 SETPOINT
99 = AUTO
P04 LOAD LIMIT STAGE (0,1, 2)
P05 –
P06 –
P07 START/STOP COMMAND (0 = STOP, 1 = RUN)
P08 —
P09 —
P10 HISTORY BUFFER REQUEST
(0 = CURRENT DATA, 1 = LAST HISTORY DATA)
TABLE 40 – ISN RECEIVED DATA
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