Carrier 50FK User Manual
Page 4
Table 2 — Pin Terminal Connector J2
Status Switch Inputs
CONNECTOR J2
TERMINAL NO.
STATUS SWITCH
UNIT SIZE
034-104
1,2
Oil Pressure,
Circuit 2
Jumpered
3,4
Oil Pressure,
Circuit 1
Jumpered
7,8
Loss Of Charge,
Circuit 2
LPS2
9,10
Loss of Charge,
Circuit 1
LPS1
13,14
Economizer
Changeover
EC
15,20
Compressor Fault
Signal
CR2
15,24
Compressor Fault
Signal
CR1
LEGEND
CR
— Control Relay
EC
— Enthalpy Control
LPS — Low-Pressure Switch
NOTE: Terminal numbers 5, 6, 11, 12, 16-19, and 21-23 are not used
on these units.
LEGEND
T
—
Thermistor
Field Wiring
Accessory
Fig. 2 — Pin Terminal Connector J1
Thermistor Inputs
LEGEND
CR
— Control Relay
EC
— Enthalpy Control
LPS — Low-Pressure Switch
Fig. 3 — Pin Terminal Connector J2
Status Switch Inputs
LEGEND
IN
— Input
Factory Wiring
P
— Potentiometer
Field Wiring
RNT — Return
Accessory
SW
— Switch
Fig. 4 — Pin Terminal Connector J3
Potentiometer Inputs
4