Wiring Diagram - Carrier 59SC6A Installation Instructions Manual

59SC6A: Installation, Start-up, Operating and Service and Maintenance Instructions

WIRING DIAGRAM

G
C
W
Y
R
TRAN
NOTES:
1. If any of the original equipment wire is replaced use wire rated f or 105ºC.
2. Use only copp er wire be tween the disconnect switch and the f urnace junction box (JB).
3. This wire must be connected to f urnace sheet metal f or con trol to prove flam e.
4. Symbols are elec trical representation onl y.
5. Solid lines inside PCB are printed c ircuit bo ard conduct ors and are not included in
legen d.
6. Replace only with a 3 amp fus e.
7. Inductor may be used with 3/4 hp and 1 hp ECM Blower motors. Review motor instructions
if replacing motor to see if Induct or is required.
8. Factory connected when L GPS is not use d.
9. Blower-off delay: gas heating selections
or heat pump 90, 30 seconds o r 5 seconds .
10. Ignitio n-lockout will occ ur aft er four consecutive unsuccessful trials-for-ignitio n.
Control will aut o-reset aft er three ho urs.
11. Induc er (IDM) mot or contains int ernal aut o-reset th ermal ov erload switches (OL).
12. PL 13 and PL14 not available on all motors. Blower motor (BLWM) leads may be
CTRL (PL5) or Power (PL6) Connector
13. N connections are int erchangeable within the N connect or bloc k.
14. BLWM is locked - rotor overload protected by redundant elec tronic con trol c ircuit s.
Prime Condensate Trap with Water
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow these warnings could result in personal injury or
death.
Failure to use a properly configured trap or NOT water-priming trap
before operating furnace may allow positive pressure vent gases to
enter the structure through drain tube. Vent gases contain carbon
monoxide which is tasteless and odorless.
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in intermittent unit operation
or performance satisfaction.
Condensate trap must be PRIMED or proper draining may not occur.
The condensate trap has two internal chambers which can ONLY be
primed by pouring water into the inducer drain side of condensate trap.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
CONNECTION DIAGRAM
PRINTED CIRCUIT BOARD
24VAC HUM
STATUS
CODE LED
SEE R ATING PLA T EFO R
M ODEL P RO GR AM #
SEE INST ALLA TION INSTRUCTIONS
FOR AIR FLOW SETTINGS
NEUTRAL-L2
EAC-2 EAC-1
BL PR L1
PL1
YEL
BRN
PL16
BLK 2 1
PL2
PL12
IDM
PL12
GRN/YEL
YEL
ORG
BLWM
C
BRN NOTE #12
FUSED OR CIRCUIT
BREAKER DISCONNECT
SWITCH (WHEN REQ'D)
JB
FU2
ILK
are 90, 120, 150 or 180 seconds, cooli ng
hardwired at motor. Depending on motor type, 24V Common wire may be in either
Fig. 61 – Wiring Diagram
TO 115VAC FIELD - DISCONNECT SWITCH
NOTE #2
ILK
L1
IDR
NOTE #5 PCB
CPU
PL12
RED
BL
EACR
FRS2
HUM
24VAC
R
W
Y
G
C
PCB
NOTE #5
NOTE #2
L JUNCTION TERMINAL
E
CONTROL TERMINAL
G
PCB CONTROL TERMINAL
E
FIELD EARTH GROUND
N
EQUIPMENT GROUND
D
BLWM Blower Motor (ECM)
CPU Microprocessor / Circui t ry
DISP1 7-Segment display
EAC-1
Electroni c Air Cleaner Connecti o n
(115VAC 1.0 Amp Max.)
EAC-2
Electroni c Air Cleaner Connection (Common)
FRS Flame-Rollout Switch, Man. Reset, SPST (N.C.)
FSE Flame Proving Sensor Electrode
FU1
Fuse, 3 Amp, Automotive Blade Type
Factory Install e d
FU2
Fuse or Disconnect
GV
Gas Valve -redundant
GVR Gas Valve Relay, SPST (N.O.)
HPS Inducer Housing Pressure Switch, SPST (N.O.)
HSI Hot Surface Ignit e r (115VAC)
HSIR
Hot Surface Ignit e r Relay, SPST (N.O.)
24VAC HUM
24VAC Humidifi e r Connection (0.5 Amp Max.)
HUMR
Humidifi e r Relay, SPST (N.O.)
IDM Induced Draft Mot o r, ECM
IDR Inducer Motor Relay, SPST (N.O.)
ILK Blower Door Interlock Switch, SPST (N.O.)
IND
Induct o r (Note #7)
KY1 Next / Option Push Butto n
KY2 Menu / Select Push Butto n
LED
Light Emitting Diode f o r Status Codes
1. Remove upper and middle collector box drain plugs opposite of the
condensate trap. See
2. Connect field-supplied 5/8-in. (16 mm) ID tube with attached
funnel to upper collector box drain connection.
3. Pour one quart (liter) of water into funnel/tube. Water should run
through collector box, overfill condensate trap, and flow into open
field drain.
4. Remove funnel; replace collector box drain plug.
5. Connect field-supplied 5/8-in. (16 mm) ID tube to middle collector
box drain port.
6. Pour one quart (liter) of water into funnel/tube. Water should run
through collector box, overfill condensate trap, and flow into open
field drain.
7. Remove funnel and tube from collector box and replace collector
box drain plug.
56
SCHEMATIC DIAGRAM
EQUIPMENT
N
GROUND
N
IDM
PL2
2
HSIR
1
1
HSI
2
PL3
N
PL16
PL1-9 1
PL1-7
3
PL1-11 PL13
1
1
2
2
3
4
BLWM
5
NOTE #12
PL12
C
IND
L
NOTE #7
G
N
N
PL14
EAC-1
EAC-2
PR
N
115VAC
LS1 LS2 FRS1
TRAN
SEC1
PL1-6
SEC2
FU1
24VAC
NOTE #6
(WHEN USED)
HPS
PL1-8
LPS
NOTE #8
PL1-2
(WHEN USED)
LGPS
PL1-4
PL1-3 GV
CPU PL1-5
PL1-10
GVR
NOTE #3
PL1-1 FSE
FACTORY POWER WIRING (115VAC)
FACTORY CONTROL WIRING (24VAC)
FIELD CONTROL WIRING (24VAC)
CONDUCTOR ON CONTROL
FIELD WIRING SCREW TERMINAL
PLUG RECEPTACLE
Low Gas Pressure Switch, SPST (N.O.)
LGPS
LPS Collect o r Box Pressure Switch, SPST (N.O.)
LS Limit Switch, Auto-Reset, SPST (N.C.)
PCB Printed Circuit Board
11-Circuit PCB Connect o r
PL1
2-Circuit HSI & IDM Connect o r
PL2
2-Circuit HSI Connect o r
PL3
PL5 4-Circuit Super Plug Connect o r
1-Circuit Induct o r Splice Connect o r
PL12
PL13 5 or 6 Circuit ECM Blower CTRL Connect o r
PL14 3 or 4 Circuit ECM Blower Power Connect o r
PL16 3-Circuit PWM Connect o r
TRAN Transformer, 115VAC / 24VAC
Fig. 62.
A210800