144
Table 107 — Economizer Control Board (EXB) Inputs and Outputs
Fig. 32 — Staged Gas Heat Control Board (SCB)
Table 108 — Staged Gas Control Board (SCB) Inputs and Outputs
POINT NAME POINT DESCRIPTION TYPE OF I/O I/O POINT NAME
CONNECTOR
PIN NO.
INPUTS
PPS
Not Used
Plenum Pressure Switch
—
Switch Input
—
DI1
DI2
J4, 1-2
J4, 3-4
SACFM Supply Air CFM 4-20 Transducer (4-20 mA) AN1 J5, 1-3
RACFM Return Air CFM 4-20 Transducer (4-20 mA) AN2 J5, 4-6
OUTPUTS
Not Used
CMPA1CAPHUMID
RLY
Not Used
Not Used
Not Used
—
Compressor A1 Solenoid (0-100%)
Humidifier Relay
—
—
—
4 to 20 mA
Digital
Relay
Relay
Relay
Relay
AO1
PP/MP
RLY1
RLY 2
RLY 3
RLY 6
J9, 1-2
J7, 1-3
J8, 1-3
J8, 4-6
J8, 7-9
J8, 16-18
POINT NAME POINT DESCRIPTION TYPE OF I/O I/O POINT NAME
CONNECTOR
PIN NO.
INPUTS
LIMSWTMP Limit Switch Temp Thermistor/Transducer (0-5 V) AN1 J5, 1-3
LAT1SGAS Supply Air Temp #1 Thermistor/Transducer (0-5 V) AN2 J5, 4-6
LAT2SGAS Supply Air Temp #2 Thermistor/Transducer (0-5 V) AN3 J5, 7-9
LAT3SGAS Supply Air Temp #3 Thermistor/Transducer (0-5 V) AN4 J5, 10-12
Not Used — Thermistor/Transducer (0-5 V) AN5 J5, 13-15
Not Used — Thermistor/Transducer (0-5 V) AN8 J6, 1-3
Not Used — Thermistor/Transducer (0-5 V) AN7 J6, 4-6
Not Used — Thermistor/Transducer (0-5 V) AN6 J6, 7-9
Not Used — Thermistor AN9 J7, 1-2
Not Used — Thermistor AN10 J7, 3-4
OUTPUTS
HTMG.CAP Modulating Heat Capacity 4 to 20 mA AO1 J8, 1-2
Not Used — 4 to 20 mA AO2 J8, 3-4
HS3 Relay 3 W1 Gas Valve 2 Relay RLY1 J9, 1-3
HS4 Relay 4 W2 Gas Valve 2 Relay RLY 2 J9, 4-6
HS5 Relay 5 W1 Gas Valve 3 Relay RLY 3 J9, 7-9
HS6 Relay 6 W2 Gas Valve 3 Relay RLY 4 J9, 10-12
Not Used — Relay RLY 5 J9, 13-15
ADDRESS DIP
SWITCHES ALL ON
RED LED-
STATUS
GREEN LED-
LEN (LOCAL EQUIPMENT NETWORK)
J2
J1
PWR
J4
LEN
LEN
J3
4-POSITION
DIP SWITCH
PWR
1
13
10
7
XDCR/THERM
4
1
J6
J5
7
4
1
3
1
3
1
J8
0-20mA OUT
J7
THERMXDCR/THERM
1
4
13
10
7
RELAYS
J9
CEBD430427 HK50AA032 CEPL130427
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