Fig. 12—unit wiring diagram, Component test – Carrier 58TMA User Manual
Page 8
Fig.
12—Unit
Wiring
Diagram
A94232
FUSED DISCONNECT
SWITCH (WHEN REQ'D)
NOTE #1
JB
WHT
BLK
GRN
GRN
FU2
COMPONENT TEST
To initiate the component test sequence with no thermostat inputs and with all inducer Post-Purge and
Blower-Off Delay periods completed, short the 'TWIN/TEST' terminal to the 'COM' terminal for about two
seconds. The control will turn ON the inducer motor Low-Speed, inducer motor High-Speed, HSI,
blower motor Low-Gas-Heat Speed, blower motor High-Gas-Heat Speed, and blower motor High-Cool
Speed for 7-15 seconds each. Neither the gas valve nor the humidifier will be turned ON.
ALS1
ALS2
BHI/LOR
BHT/CLR
BLWM
BLWR
CAP
CPU
DSS
EAC-1
EAC-2
FRS1
FRS2
FSE
FU1
FU2
GV
HPS
HPSR
HSI
HSIR
HUM
IDM
IDR
IHI/LOR
ILK
JB
LED
LGPS
LPS
LS
MGVR
LEGEND
AUXILIARY LIMIT SWITCH, OVERTEMP.–MANUAL RESET, SPST-(N.C.)
AUXILIARY LIMIT SWITCH, OVERTEMP.–AUTO. RESET, SPST-(N.C.)
BLOWER MOTOR SPEED CHANGE RELAY, SPDT
BLOWER MOTOR SPEED CHANGE RELAY, SPDT
BLOWER MOTOR, 4-SPEED, PERMANENT-SPLIT-CAPACITOR
BLOWER MOTOR RELAY, SPST-(N.O.)
CAPACITOR
MICROPROCESSOR AND CIRCUITRY
DRAFT SAFEGUARD SWITCH
ELECTRONIC AIR CLEANER CONNECTION (115 VAC 1 AMP MAX.)
ELECTRONIC AIR CLEANER CONNECTION (COMMON)
FLAME ROLLOUT SWITCH OVERTEMP.–MANUAL RESET, SPST-(N.C.)
FLAME ROLLOUT SWITCH OVERTEMP.–MANUAL RESET, SPST-(N.C.)
FLAME-PROVING SENSOR ELECTRODE
FUSE, 3 AMP, AUTOMOTIVE BLADE TYPE, FACTORY INSTALLED
FUSE, FIELD INSTALLED
GAS VALVE-REDUNDANT LOW-HEAT OPERATORS, 2-STAGE
HIGH-HEAT PRESSURE SWITCH, SPST-(N.O.)
HIGH-HEAT PRESSURE SWITCH RELAY, SPST-(N.C.)
HOT-SURFACE IGNITOR (115 VAC)
HOT-SURFACE IGNITOR RELAY, SPST-(N.O.)
24VAC HUMIDIFIER CONNECTION (
.
5 AMP MAX.)
INDUCED DRAFT MOTOR, 2-SPEED, SHADED–POLE
INDUCER MOTOR RELAY, SPST-(N.O.)
INDUCER MOTOR SPEED CHANGE RELAY, SPDT
BLOWER DOOR INTERLOCK SWITCH, SPST-(N.O.)
JUNCTION BOX
LIGHT-EMITTING DIODE FOR STATUS CODES
LOW GAS-PRESSURE SWITCH, SPST-(N.O.)
LOW-HEAT PRESSURE SWITCH, SPST-(N.O.)
LIMIT SWITCH, OVERTEMPERATURE-AUTO RESET, SPST-(N.O.)
MAIN GAS VALVE RELAY, DPST-(N.O.)
–
1 = VALVE –
2 = HUMIDIFIER
PL1
PL2
PL3
PL4
PL6
PL7
SW1
SW2
SW3 & 4
TJ
TRAN
TWIN/TEST
12-CIRCUIT CONNECTOR
9-CIRCUIT CONNECTOR
3-CIRCUIT IDM CONNECTOR
1-CIRCUIT FPS CONNECTOR
2-CIRCUIT HSI CONNECTOR
2-CIRCUIT LINE/NEUTRAL CONNECTOR
HIGH-HEAT-ONLY SWITCH, SPST-(MANUAL)
*
LOW-HEAT-ONLY SWITCH, SPST-(MANUAL)
*
BLOWER-OFF DELAY SETTING SWITCHES,
SPST-(MANUAL)
*
TWINNING JUMPER, SPDT FOR MASTER OR
SLAVE STATUS-(MANUAL CHANGE-OVER)
TRANSFORMER-115VAC/24VAC
1-CIRCUIT TWINNING BUSS CONNECTOR,
ALSO STATUS CODE RECALL
JUNCTION
TERMINAL
CONTROL TERMINAL
FACTORY POWER WIRING (115VAC)
FACTORY CONTROL WIRING (24VAC)
FIELD POWER WIRING (115VAC)
FIELD CONTROL WIRING (24VAC)
CONDUCTOR ON CONTROL
FIELD WIRING SCREW TERMINAL
FIELD GROUND
EQUIPMENT GROUND
FIELD SPLICE
PLUG RECEPTICLE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
USE ONLY COPPER WIRE BETWEEN THE DISCONNECT SWITCH AND
THE UNIT.
IF ANY OF THE ORIGINAL WIRE, AS SUPPLIED, MUST BE REPLACED, USE
THE SAME OR EQUIVALENT TYPE WIRE.
INDUCER (IDM) AND BLOWER (BLWM) MOTORS CONTAIN INTERNAL AUTO-
RESET THERMAL OVERLOAD SWITCHES.
BLOWER MOTOR SPEED SELECTIONS ARE FOR AVERAGE CONDITIONS.
SEE INSTALLATION INSTRUCTIONS FOR DETAILS ON OPTIMUM SPEED
SELECTION.
REPLACE ONLY WITH A 3-AMP FUSE.
AUXILIARY LIMIT SWITCHES (ALS1 & 2) USED ON DOWNFLOW MODELS
ONLY.
THIS WIRE MUST BE CONNECTED TO FURNACE SHEET METAL FOR
CONTROL TO PROVE FLAME.
FACTORY CONNECTED WHEN LGPS NOT USED.
SYMBOLS ARE AN ELECTRICAL REPRESENTATION ONLY.
BLOWER-ON DELAY: GAS HEATING 45 SECONDS, COOLING/HEAT PUMP 2
SECONDS.
COOLING/HEAT PUMP BLOWER-OFF DELAY IS 90 SECONDS.
IGNITION-LOCKOUT WILL OCCUR AFTER FOUR CONSECUTIVE UNSUC-
CESSFUL TRIALS-FOR-IGNITION. CONTROL WILL AUTOMATICALLY RESET
AFTER THREE HOURS.
CONTROL MUST BE GROUNDED AT PIN 10 OF 12-PIN CONNECTOR.
NA - NOT APPLICABLE
NOTES:
320854-401 REV. D
LS
FRS2
NOTE #8
LPS
CONNECTION DIAGRAM
RED
RED
RED
FRS1
(WHEN USED)
HEAT
SET-UP
SWITCH
NORM
HI HT
LO HT
SWITCH
1
2
ON
OFF
ON
OFF
ON
OFF
ON
OFF
SWITCH
3
4
BLOWER-OFF
DELAY
(SEC.)
90 SEC
135 SEC
180 SEC
225 SEC
2-STAGE
FURNACE
CONTROL
BLOWER-OFF DELAY
1
4
23
BLOWER-OFF DELAY
LOW-HEAT ONLY
HIGH-HEAT ONLY
ON
OFF
W2
Com
24V
W/
W1
Y/
Y2
R
G
HUM
TWIN
TEST
LED
1
2
3
TJ
M
S
RED
RED
ORN
YEL
RED
ORN
ORN
YEL
NOTE
#8
DSS
LGPS
ALS1
(WHEN USED)
NOTE
#6
ALS2
ORN
BRN
BLU
WHT
GRN
10
11
12
P1
1
2
3
7
8
9
BLK
GRY
SEC2
PR1
PR2
L1
L2
COMMON
HI-COOL
HI-GAS
HEAT
SEC1
LO-GAS
HEAT
EAC-2
EAC-1
PARK
FU1
PL2
YEL
(WHEN USED)
1
PL
4
WHT
FSE
1
2
BLK
PL6
HSI
WHT
IDM
GRN
RED
WHT
BLK
1
2
3
PL3
RED
BLK
WHT
BRN
GRY
BRN
HPS
HI
P
M
C
GRN
GRN
BLU
L1
L2
1
2
WHT
BLK
ILK
WHT
BLK
PL7
BLK
WHT
CAP
BRN
BRN
NOTE #4
COM
HI
MED HI
MED LO
LO
RED
BLU
WHT
BLK
YEL
BLU
RED
BLWM
RED
BLU
WHT
BLK
TRAN
SCHEMATIC DIAGRAM
(NATURAL GAS & PROPANE)
TO 115VAC FIELD DISCONNECT SWITCH
EQUIPMENT GROUND
ILK
L1
PL7
BLWR
HSIR
EAC-1
EAC-2
BHT
/CLR
BHI/LOR
LO-GAS-
HEAT
PARK
HI-COOL
COMMON
HI-GAS-
HEAT
LO
MED LO
MED HI
HI
COM
BLWM
L2
BRN
BRN
CAP
NOTE #4
IDR
IHI
/LOR
PR1
115VAC
24VAC
TRAN
PR2
SEC1
SEC2
FU1
NOTE #5
HPSR
HSI
PL6
PL3
1
2
2
1
3
3
9
4
7
8
1
5
6
2
LO
HI
COM
IDM
N
/A
N
/A
12
2
3
9
6
5
4
1
10
7
8
11
N
/A
FRS1
(WHEN USED)
FRS2
LS
MGVR-2
HUM
R
TWIN
TEST
SLAVE
MASTER
W/W1
SW1
W2
Y/Y2
G
C
OM
SW4
SW3
SW2
CPU
TWINNING
JUMPER
TJ
MGVR-1
PL1
N/A
N/A
PL4
FSE
M
P
C
NOTE#7
HI
GV
HPS
NOTE #8
LGPS
(WHEN USED)
NOTE #8
LPS
DSS
ALS1
ALS2
GV
FACTORY
SETTING
PL2
GRY
NOTE #1
*
*
*
8