November
2013
ELECTRICAL INSTALLALLATION (CONT.)
2) CONTROL CENTER JUNCTION BOX
A) Install the “A” leg of the wring harness from the switch junction box.
B) Install the “C” leg to the fan limit control.
• “C” leg has (3) wires: Black, White and Red.
C) Install the “D” Black to relay Red.
D) Connect the wires as shown:
• Wire nut the White wires from legs “A”, “D” and control transformer.
• Wire nut leg “A” Red to transformer Black.
• Wire nut leg “C” Red to relay Black.
• Wire nut leg “D” Black to relay Red.
• Wire nut together all of the green wires.
3) CIRCULATION BLOWER (LEG “B”)
A) If the furnace is installed in SERIES with the existing furnace:
• Connect (B) wires to circulation blower on existing furnace.
• Connect leg “C” white wire to either the blower Red or Black wire depending on the desired blower speed.
• Connect the “A” White wire to the blower White wire.
B) If the furnace is installed in PARALLEL with the existing furnace:
• Connect (C) White wire to the blower Red Black wire depending on the desired blower speed.
• Connected blower White to White wires from legs
“A” , “D” and the control transformer.
Page 20
BLK
WHT
BLK
GREEN
RED
WHT
RED
BLK
WHT
BLK
GREEN
GREEN
WHT
BLK
TRANFORMER
RELAY
COIL
COIL
CONTROL CENTER
RED
2
RED
BLK
RED
WHT
BLK
WHT
WHT
BLK
WHT
WHT
BLK
A
Power
In
C
Limit
D
Fan
5
4
3
2
1
6
Select one of:
BLK
YEL
ORG
TO:
PURPLE
B
Circulation
Blower