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4
LEGEND
Fig. 2 — Pin Terminal Connector J1
Thermistor Inputs
T
—
Thermistor
Field Wiring
Accessory
LEGEND
Fig. 3 — Pin Terminal Connector J2
Status Switch Inputs
CR
—
Control Relay
EC
—
Enthalpy Control
LPS —
Low-Pressure Switch
Table 2 — Pin Terminal Connector J2
Status Switch Inputs
LEGEND
NOTE: Terminal numbers 5, 6, 11, 12, 16-19, and 21-23 are not used
on these units.
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
CR
—
Control Relay
EC
—
Enthalpy Control
LPS —
Low-Pressure Switch
LEGEND
Fig. 4 — Pin Terminal Connector J3
Potentiometer Inputs
IN
—
Input
Factory Wiring
P
—
Potentiometer
Field Wiring
RNT
—
Return
Accessory
SW
—
Switch
Summary of Contents for 48FK034
Page 14: ...14 Fig 20 Unit Control Box Arrangement Sizes 034 048...
Page 15: ...15 Fig 21 Unit Control Box Arrangement Sizes 054 078...
Page 16: ...16 Fig 22 Unit Control Box Arrangement Sizes 088 and 104...
Page 39: ...39 Fig 44 Modulating Power Exhaust Component Locations Sizes 034 048...
Page 40: ...40 Fig 45 Modulating Power Exhaust Component Locations Sizes 054 104 48FK 50FK JK Shown...
Page 59: ...59 Fig 57 Typical Wiring Schematic 48FK JK and 50FK FY JK JY Units 054 074 Shown...
Page 60: ...60 Fig 57 Typical Wiring Schematic 48FK JK and 50FK FY JK JY Units 054 074 Shown cont...
Page 61: ......