Carrier 42C Installation And Start-Up Instructions Manual page 6

FAN (24VAC)
FAN ON (LOW SPEED)
NOT USED
MED SPEED
HIGH SPEED
Baseboard Outputs (J5)
CHANNEL J5 Pins (+,–)
Valve DX1 1, 2*
Valve DX2 3, 2*
HEAT_ST1 5, 4†
HEAT_ST2 5, 6†
*Terminals 1 and 3 provide switched 24 VAC output power to the load.
†J5-5 must be jumpered to 24 VAC + (J1-1).
1
VALVE/DX1 (OPEN)
GROUND
VALVE/DX2 (CLOSE)
Fig. 6 — Fan Coil Controller Baseboard Outputs
Daughter Board Outputs (J6, J7)
CHANNEL TERMINATIONS(+,–)
FAN AC J6-1, J1-1
FAN ON J6-2, J1-2
LOW J6-3, J1-2
MED J6-4, J1-2
J6-5, J1-2
HI
OAD J7-1, J7-2
NOTE: J6-1 must be jumpered to 24 VAC +. (J1-1).
2
1
Fig. 5 — Fan Coil Controller Daughter Board Outputs
DESCRIPTION CONTROL DEVICE
Open 24 VAC, 1A
Close 24 VAC, 1A
Heat Open, 1st Stage 24 VAC, 1A
Heat Close, 2nd Stage 24 VAC, 1A
J5
5 6
2 3 4
DESCRIPTION CONTROL DEVICE
Fan Input Power
Fan Start/Stop
(Low Speed)
Not Used
Med Speed
High Speed
Outdoor Air Damper
J6
4 5
3
HEAT CLOSE/
STAGE 2
COMMON (24VAC)
HEAT OPEN/
STAGE 1
6
24V, 5A
24V, 5A
24V, 5A
24V, 5A
24V, 5A
24 VAC 1A
J7
1 2
24VAC
OAD
Cool Warm
Fig. 7 — Space Temperature Sensor
(P/N 33ZCT56SPT Shown)