3.11.8 WIRING CONNECTION DIAGRAMS
C G
Y2 W1
WIRE COLOR CODE
BK BR BL G O
PR R W Y
BLACK BROWN BLUE GREEN ORANGE
PURPLE RED WHITE YELLOW
BL PR Y BK BR
COMPONENT CODE
BC HC LBR LC
BLOWER CONTACTOR HEATER CONTACTOR LIMIT BYPASS RELAY LIMIT CONTROL
BLUE LEAD ONLY
USE WITH HEAT PUMP*
2-STAGE
AIR CONDITIONING
THERMOSTAT
2-STAGE
HEAT PUMP THERMOSTAT
LOW VOLTAGE
LC3*
LC4*
LC2
LC1
LBR*
*
W2
G
O
X
LBR
HEAT PUMP
LOW VOLTAGE LEADS
O
BR
Y
Y/BL
R
BL
*LBR, LC3 AND LC4 NOT REQUIRED ON 208/240 V
KITS RATED 20KW & 30KW HEATER KIT
OR ANY HEATER KIT INSTALLED ON 15 TON OT 20 TON AIR HANDLERS
HC1
BC
HC2
AIR-HANDLER (LOW VOLTAGE)
CONDENSING UNIT (LOW VOLTAGE)
Y1
Y2
R
B
Y2
Y1
R
Y2
Y1
R
CC
:
:
<
<
*
&
+&
+&
%&
/&
%5
%.
</
38
/&
(Low Voltage)
+($7(5.,7 237,21$/
$,5+$1'/(5
/2:92/7$*(
C G
Y2 W1
THERMOSTAT
LOW
VOLTAGE
** IMPORTANT NOTE ABOUT OPTIONAL HEATER KIT:
(SEE ATTACHED TEXT)
ST-A1289-01-00
NOTE: INDOOR BLOWER MOT
OR OPERA
TES
AT
FULL
SPEED FOR 2ND
ST
AGE COOLING
AND FOR BOTH ST
AGES OF ELECTRIC HEA
T.
W2
W1
G
C
