Carrier 59SC2A - Page 82

59SC2A
CONNECTION DIAGRAM SCHEMATIC DIAGRAM
TO 115 VAC FIELD DISCONNECT SWITCH
HEAT OFF-DELAY PCB 12] NEUTRAL 4, EQUIPMENT GROUND
42° JUMPER SELECTOR Gy
SPARE 1 (RED)
aU OTe HS
120 HEAT | spare 2 (ORN} EE
3 GRAVEL PARE 3 (VEL
FRS2 NOTE #5 ist NoTestg SPARES {YEL)
3 = = spe Hercogp —— Bu
ma RED
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TEST/TWIN a RS &
FUI = a = i a 2
HUM a & x
NOTES po TR ary —
z | | RED a HT
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G SEQ SECT fea u (WHEN USED)
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er EAC-2 12 PL fe Oh PL1-8
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‘ FUSE OR CIRCUIT BREAKER &
i DISCONNECT SWITCH (WHEN REQD} AY 17
ri 4B NOTE #2 PCB NOTE #
: we me wn NEUTRAL L
wu} —@— UNCTION TERMINAL summmen — FACTORY POWER WIRING ({15VAC}
NOTE
#
E
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CONTROL
TERMINAL
~~
FACTORY
CONTROL
WIRING
{24VAC)
g Wee PCB CONTROL TERMINAL ~~~ FIELD CONTROL WIRING (24VAC}
al = = CONDUCTOR ON CONTROL
WHT N Ay SUPMENT GROUND. @__ FIELD WIRING SCREW TERMINAL
CELLS | CAB NOTES Dd ==(é@= PLUGRECEPTACLE
BHTICLR aoe Raa TOR SPEED CHANGE IDM INDUCED DRAFT MOTOR, PSC
A IDR INDUCED DRAFT MOTOR RELAY,
BLWR BLOWER MOTOR RELAY, SPST-(N.0.) SPST{N.O}
NOTES: ann BLOWER MOTOR, IK BLOWER ACCESS PANEL INTERLOCK
1. [any of the original equipment wire is replaced use wire rated for 105°C. BP PERMANENT SPLIT CAP ACITOR SWITCH, SPST-(N.O,)
2. Use only copper wire between the disconnect switch and the furnace junction CPU MICROPROCESSOR AND CIRCUITRY a BLOWER - OFF DELAY JUMPER
box (JB). EAC — ELECTRONICAIR CLEANER CONNECTION a NG
3. This wire must be connected to fumace sheet metal for control to prove flame. (HIS VAC 1.0 AMP MAX.) 2 BLOWER - OFF DELAY
4, Symbols are electrical representation only. EAC-2 ELECTRONICAIR CLEANER JUMPER - COOLING
5. Solid lines inside PCB are printed circult board conductors and are not included CONNECTION (COMMON) JB JUNCTION BOX
in legend. FRS 1,2 FLAME ROLLOUT SW.-MANUAL LED LIGHT-EMITTING DIODE FOR STATUS
6. Replace only with a 3 amp fuse. RESET, SPSTANC,) CODES «AMBER
7. Inducer (IDM) and blower (BLWM) motors contain internal auto-reset thermal FSE —_- FLAME-PROVING ELECTRODE LGPS LOW GAS PRESSURE SWITCH, SPSTAN.O,)
overload switches (OL). FU4 FUSE, 3 AMP, AUTOMOTIVE BLADE TYPE, LPS COLLECTOR BOX PRESSURE
8. Neutral connections are interchangeable within the NEUTRAL connector block. FACTORY INSTALLED SWITCH, SPST (N.0,}
9. Blower motor speed selections are for average conditions, see installation FU2 FUSE OR CIRCUIT BREAKER CURRENT Ls LIMIT SWITCH, AUTO-RESET, SPST (N.C.)
instructions for details on optimum speed selection. SN WorSte OL AUTO-RESET INTERNAL MOTOR
10. Factory connected when LGPS is not used. cro EAUPHSIToRO OVERLOAD TEMPERATURE SWITCH ING)
11. Ignition-lockout will occur after four consecutive unsuccessful trials-for-ignition ev GAS VALVE-REDUNDANT PCB PRINTED CIRCUIT BOARD CONTROL
control will auto-reset after three hours. GVR GAS VALVERELAY, SPSTAN) PL ‘1-CIRCUIT PCB CONNECTOR
12, Blower-on delay: gas heating 25 seconds, cooling or heat pump 2 seconds. HPS INDUCER HOUSING PRESSURE ple 2CIRCUIT CONNECTOR
13. Blower-off delay: gas heating selections are 90, 120, 150 or 180 seconds, SWITCH, SPST (N.O,) PL3 2-CIRCUIT HSI, CONNECTOR
cooling or heat pump 90 seconds or 5 seconds when J2 is out. HS| HOT SURFACE IGNITER (115 VAC) PLA $-CIRCUIT IDM, CONNECTOR
14, Heat tap may be factory wired with a different color. See Installation instructions for HSIR HOT SURFACE IGNITER RELAY SPSTN.O) © PRI TRANSFORMER CONNECTION (115 VAC)
proper airflow selection. HUM 24 VAC HUMIDIFIER CONNECTION TEST/WIN COMPONENT TEST & TWIN TERMINAL
15. ORN wire not on some models. (O5AMP. MAX) TRAN TRANSFORMER-115VAC/24VAC
A12420
Fig. 65 - Wiring Diagram