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YORK INTERNATIONAL
97
FORM 150.62-NM1
* The 30 dc unregulated supply is not an input. This voltage originates on the microboard and is used to supply the contacts for the binary
inputs.
TABLE 46 – MICROBOARD OUTPUTS
TB3-2 SYSTEM 1 COMPRESSOR 1
TB3-3 SYS 1 LIQUID LINE SOLENOID VALVE
TB3-4 SYSTEM 1 COMPRESSOR 2
TB3-5 SYSTEM 1 COMPRESSOR 3
TB3-6 SYSTEM 1 HOT GAS BYPASS VALVE
TB3-8 SYSTEM 2 COMPRESSOR 1
TB3-9 SYS 2 LIQUID LINE SOLENOID VALVE
TB3-10 SYSTEM 2 COMPRESSOR 2
TB4-1 SYSTEM 2 COMPRESSOR 3
TB4-2 SYS 1 CONDENSER FAN STAGE 1
TB4-4 SYS 1 CONDENSER FAN STAGE 2
TB4-5 SYS 1 CONDENSER FAN STAGE 3
TB4-6 SYS 2 CONDENSER FAN STAGE 1
TB4-8 SYS 2 CONDENSER FAN STAGE 2
TB4-9 SYS 2 CONDENSER FAN STAGE 3
TB4-10 EVAPORATOR HEATER
TB5-1 SYSTEM 1 ALARM
TB5-2 SYSTEM 2 ALARM
TB5-3 EVAPORATOR PUMP STARTER
TABLE 44 – MICROBOARD BINARY INPUTS
*J9-1 30VDC UNREGULATED SUPPLY
J9-2 UNIT ON/OFF SWITCH
J9-3 PWM TEMP RESET
OR LOAD LIMIT STAGE 2 ON 3 & 6 COMP UNITS
J9-4 LOAD LIMIT STAGE 1
J9-5 FLOW SWITCH AND REMOTE START / STOP
(SYS 1 ZONE THERMOSTAT - YCUL ONLY)
J9-6 SYSTEM 2 ZONE THERMOSTAT - YCUL ONLY
J9-7 SINGLE SYSTEM SELECT
(JUMPER = SINGLE SYS, NO JUMPER=TWO
SYS)
J9-8 CR1 (SYS 1 MOTOR PROTECTOR / HIGH
PRESS CUTOUT)
J9-9 CR2 (SYS 2 MOTOR PROTECTOR / HIGH
PRESS CUTOUT)
TABLE 45 – MICROBOARD ANALOG INPUTS
J4-10 Sys 1 Suction Press Transducer or
Sys 1 Low Press Switch
J4-11 SPARE
J4-12 Sys 1 Discharge Pressure Transducer (optional)
J5-12 Sys 1 Suction Temp Sensor - YCUL Option
J5-13 Sys 2 Suction Temp Sensor - YCUL Option
J5-14 SPARE
J5-15 SPARE
J6-7 Ambient Air Temperature Sensor
J6-8 Leaving Chilled Liquid Temperature Sensor
J6-9
Return Chilled Liquid Temperature Sensor
or
Discharge Air Temp Sensor - YCUL Only
J7-10
Sys 2 Suct Press Transducer
or
Sys 2 Low Press Switch
J7-11 SPARE
J7-12 Sys 2 Discharge Pressure Transducer (optional)
J8-5 Sys 1 Ground Fault Circuit
J8-6 Sys 2 Ground Fault Circuit
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