Carrier 59SC2C Series Installation, Start-Up, Operating And Service And Maintenance Instructions page 39

Fig. 36 - - Field- -supplied Isolation Relay for Humidifiers with Internal Power Supply
FIVE WIRE
THREE-WIRE
HEATING-ONLY
BLOWER DOOR SWITCH
BLK BLK
WHT WHT
GND GND
AUXILIARY
115-V FIELD-
J-BOX
SUPPLIED
DISCONNECT
FURNACE
To Humidifier Leads
To Humidifier Leads
NOTE 2
W C R G
W
C
R
O
N
T
R G
O
COM
L
NOTE 1
Y
24-V
TERMINAL
BLOCK
NOTES: 1. Connect Y-terminal in furnace as shown for proper blower operation.
2. Some thermostats require a "C" terminal connection as shown.
3. If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
Fig. 37 - - Typical Single- -Stage Wiring Diagram
To HUM Terminal On
Furnace Control Board
24 V
Coil
To Com/24V Screw Terminal
on Thermostat Strip
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
THERMOSTAT
Y
FIELD-SUPPLIED
TERMINALS
DISCONNECT
CONDENSING
UNIT
TWO
WIRE
39
A11157
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
GND
A11387