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TABLE 41 – 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 PROCTECTOR / HIGH
PRESS CUTOUT)
TABLE 42 – 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
Return Chilled Liquid Temperature Sensor
J6-9
or
Discharge Air Temp Sensor - YCUL Only
Sys 2 Suct Press Transducer
J7-10
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
*
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.
YORK INTERNATIONAL
TABLE 43 – 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
FORM 150.62-NM2
3
91
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