Bryant 580G Installation, Start-Up And Service Instructions Manual page 35

Table 14 — I/O Channel Designations Base Module
TERMINAL
NO.
T1-2
T3-4
T5-6
T7-8
T9-10
T11-12
T13-14
T15-16
T17-25
T18-25
T19-25
T20-25
T21-25
T22-25
T23-25
T24-25
T26-27
T28-29
T30-29
T31-32
T33-32
T34-35
T36-35
T37-38
T39-38
K1
K2
K3
LEGEND
AO — Analog Output
CV — Constant Volume
DI — Direct Input
DO — Direct Output
HV — High Voltage
K — Kilo Ohms
OAT — Outdoor Air Thermistor
OFC — Outdoor (Condenser) Fan Contactor
SAT — Supply Air Thermistor
T — Terminal
NOTE: For 4 to 20 mA signals, all even numbered terminals are negative (−) polarity and all odd
numbered terminals are positive (+) polarity.
ASSIGNMENT
—
—
OAT — 5K
SAT — 5K Thermistor
—
—
—
—
Y1 — DI (24 vac)
Y2 — DI (24 vac)
W1 — DI (24 vac)
W2 — DI (24 vac)
G — DI (24 vac)
Compressor 1 Safety — DI (24 vac)
Compressor 2 Safety — DI (24 vac)
Outside Air Enthalpy — DI (24 vac)
Economizer Pos. — AO (4-20 mA)
Heat 1 Relay — DO (24 vac)
Heat 2 Relay — DO (24 vac)
CV Power Exhaust 1/Modulating Pwr Exht — DO (115 vac)
CV Power Exhaust 2 — DO (115 vac)
Condenser Fan — DO (115 vac)
OFC2 — DO (115 vac)
—
—
Indoor Fan Relay — DO (HV)
Compr. 1 — DO (HV)
Compr. 2 — DO (HV)
—35—
Thermistor