Bryant 352MAV Installation, Start-Up, And Operating Instructions Manual page 22

CONNECTION DIAGRAM
FRS
M
BLU
GV
RED
GRN/YEL
BRN
C HI
HPS
NOTE #3
BRN
YEL
GRN/YEL
SELECT CHART
SW LO-HT BLOWER
WHT
GRY
OFF-DELAY
ONLY
*
1 2 3
90
NORM
ON
SEC.
OFF HEAT
1
LO 2 3 *
120
ON
HEAT
SEC.
OFF
ONLY
2 3
ON
150
OFF
SEC.
2 3 PL1
1
ON
180
OFF
SEC.
FACTORY SETTINGS
*
ACRDJ
1 2 3
ON
PLT
OFF
W2 Y1 DHUM G C om W/W1 Y/Y2 R STATUS CODE
24V
LED
LEGEND
ACR AIR CONDITIONING RELAY, SPST (N.O.)
ACRDJ AIR CONDITIONING RELAY DISABLE JUMPER
BHI/LOR BLOWER MOTOR SPEED CHANGE RELAY, SPDT
BHT/CLR BLOWER MOTOR SPEED CHANGE RELAY, SPDT
BLWR BLOWER MOTOR RELAY, SPST-(N.O.)
BLWM BLOWER MOTOR, PERMANENT-SPLIT-CAPACITOR
CAP 1, 2 CAPACITOR
CPU MICROPROCESSOR AND CIRCUITRY
DHUM DHUM CONNECTION
EAC-1 ELECTRONIC AIR CLEANER CONNECTION (115 VAC 1.0 AMP MAX.)
EAC-2 ELECTRONIC AIR CLEANER CONNECTION (COMMON)
FRS FLAME ROLLOUT SW. -MANUAL RESET, SPST-(N.C.)
FSE FLAME-PROVING ELECTRODE
FU1 FUSE, 3 AMP, AUTOMOTIVE BLADE TYPE, FACTORY INSTALLED
FU2 FUSE OR CIRCUIT BREAKER CURRENT INTERRUPT DEVICE
(FIELD SUPPLIED AND INSTALLED)
GND EQUIPMENT GROUND
GV GAS VALVE-REDUNDANT
GVR 1, 2 GAS VALVE RELAY, DPST-(N.O.)
HPS HIGH-HEAT PRESSURE SWITCH, SPST (N.O.)
HPSR HIGH-HEAT PRESSURE SWITCH RELAY, SPST (N.C.)
HSI HOT SURFACE IGNITER (115VAC)
HSIR HOT SURFACE IGNITER RELAY, SPST (N.O.)
HUM 24VAC HUMIDIFIER CONNECTION (0.5 AMP. MAX.)
IDM INDUCED DRAFT MOTOR, 2-SPEED, SHADED POLE
IDR INDUCED DRAFT MOTOR RELAY, SPST-(N.O.)
IHI/LOR INDUCER MOTOR SPEED CHANGE RELAY, SPDT
ILK BLOWER ACCESS PANEL INTERLOCK SWITCH, SPST-(N.O.)
JB JUNCTION BOX
LED LIGHT-EMITTING DIODE FOR STATUS CODES - AMBER
LGPS LOW GAS PRESSURE SWITCH, SPST-(N.O.)
LPS LOW-HEAT PRESSURE SWITCH, SPST (N.O.)
LS LIMIT SWITCH, AUTO-RESET, SPST (N.C.)
OL AUTO-RESET INTERNAL MOTOR OVERLOAD TEMPERATURE SWITCH (N.C.)
PCB PRINTED CIRCUIT BOARD CONTROL
RED
LS
CAP-2
BRN
RED
OL
NOTE #11
ORN
(WHEN USED)
LGPS
LPS
1 2 3 4
FSE
PL3
WHT
IHI/LOR
RED
IDM
BLK
HSIR
BLK
IDR
PL2
WHT
BLK
BLK
L1
GRN/YEL
BLK
HI
YEL
MED HI
MED ORN
MED LO BLU
LO RED
WHT
WHT
RED
PL1 12-CIRCUIT PCB CONNECTOR
PL2 3-CIRCUIT PCB HSI & IDM CONNECTOR
PL3 6-CIRCUIT ICM MOTOR CONNECTOR (NOT SHOWN)
PL4 4-CIRCUIT IDM CONNECTOR
PL5 2-CIRCUIT HSI CONNECTOR
PLT 3-CIRCUIT FACTORY TEST CONNECTOR
TRAN TRANSFORMER, 115VAC/24VAC
TEST/TWIN COMPONENT TEST & TWINNING TERMINAL
JUNCTION
TERMINAL
CONTROL PCB TERMINAL
FACTORY POWER WIRING (115VAC)
FACTORY CONTROL WIRING (24VAC)
FIELD CONTROL WIRING (115VAC)
FIELD CONTROL WIRING (24VAC)
CONDUCTOR ON CONTROL PCB
FIELD WIRING SCREW TERMINAL
FIELD EARTH GROUND
EQUIPMENT GROUND
FIELD SPLICE
PLUG RECEPTACLE
326797-101 REV. A
Fig. 31—Wiring Diagram
TO 115VAC FIELD-DISCONNECT SWITCH
FUSE OR CIRCUIT
BREAKER & DISCONNECT
SWITCH (WHEN REQ'D) ILK
EQUIPMENT
BRN
GROUND
IDM
NEUTRAL
L1 NOTE #2
FU2
IDR
HSI
GND
WHT BLK
JB
GRN /YEL
ILK BHT/CLR
1
PL5
2
BLWR
WHT
L1
BRN
OL
START
TRAN
BLWM
CAP-1
BRN
HUM
R
BLU
W/W1
TEST/TWIN
DHUM
W2
Y/Y2
G
Y1
C
OM 24V
PCB
NOTE #5
NOTES:
1. If any of the original equipment wire is replaced use wire rated for 105°C.
2. Use only copper wire between the disconnect switch and the furnace junction box (JB).
3. This wire must be connected to furnace sheet metal for control to prove flame.
4. Symbols are electrical representation only.
5. Solid lines inside PCB are printed circuit board conductors and are not included in the legend.
6. Replace only with a 3 amp fuse.
7. Blower motor (BLWM) and inducer motor (IDM) contain internal auto-reset thermal overload switches (OL).
8. Neutral connections are interchangeable within the NEUTRAL connector block.
9. Blower motor speed selections are for average conditions, see installation instructions for optimum selection.
10. MED not available on some models.
11. Factory connected when LGPS is not used.
12. Ignition lockout will occur after four consecutive unsuccessful trials-for-ignition. Control will auto-reset after
three hours.
13. Blower-on delay: gas high-heat 60 seconds, gas low-heat 45 seconds, cooling or heat pump 2 seconds.
14. Blower off-delay: gas heating selections are 90, 120, 150, 180 seconds, cooling or heat pump 90 seconds or
5 seconds when dehumidify call is active.
SCHEMATIC DIAGRAM
NOTE #2 (NATURAL GAS & PROPANE)
L2
2
IDM
L2
OL
COM
IHI/LOR
3
2 HI
1
3 4 LO
HSIR
PL5 PL4
1 1
HSI
2
PL2
BHI/LOR
LO HEAT
LO
CAP-1
MED LO
SPARE-1
NOTE #10
HI HEAT MED
BLWM
SPARE-2 MED HI
COOLING
HI
START
NOTE #9
OL
COM
EAC-1 EAC-2
PR1
115VAC
TRAN
PL1-6 SEC 1
FU1
24VAC SEC 2
NOTE #6
FRS
LS
GVR-2
PL1-8
ACR
PL1-12
LPS
HPSR
PL1-2
NOTE #11
PL1-4
LGPS
(WHEN USED)
CPU HPS
PL1-3
PL1-10 M
HI
GVR-1
GV
NOTE #3
C PL1-5
PL1-1
PL1-9
PL1-11
PL1-7
A02176
L2
L2
L2
FSE