Carrier AQUASNAP 30RB060-390 Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 10

DESCRIPTION
Power (24 vac supply)
Local Equipment Network
Circuit C Suction Gas Thermistor
Circuit C EXV
NOTE: EXV2 inputs and outputs are only used on 30RB210-300.
TR1 TR2
J2
CH1 CH2
Fig. 6 — Fan Board (AUX 1) with Low Ambient Temperature Head Pressure Control
Table 6 — EXV2 Inputs and Outputs
INPUT/OUTPUT
—
—
SGTC
EXV-C
LOCATION OF
SERIAL NUMBER
ON
1 2
TR3 TR4 TR5 TR6 TR7
J3
CH3 CH4 CH5 CH6 CH7
SCROLLING MARQUEE
I/O TYPE
POINT NAME
—
—
5k Thermistor TEMPERATURE
Stepper Motor OUTPUTS
DIP SWITCH
STATUS SIO (LEN)
3 5 7
4 6 8
J4
TR8
CH8
CH9 CH10
10
CONNECTION POINT
Pin
— 11
12
— 1
2
3
 
CIR.C SGT.C
1
 
CIR.C EXV.C 2
3
4
L5
CH13
D12 JP1
CH11 CH12
Notation
EXV2-J1
24 vac
Ground
EXV2-J4
+
G
–
EXV2J3
THA
EXV2-J2A