Single Stage Non-Variable Speed Furnace (Y Connection Only); Non-Variable Speed Furnace (Y1 & Y2 Connection); Typical Variable Speed Furnace/Air Handler Wiring; N1Ah, F2Rp/F2Fp, F2Rc/F2Fc Air Handler And 2-Speed Fan Kit Wiring - York R-410A Installation Manual

66901 / 035-20393-001 Rev. C (1204)
VARIABLE
SPEED
THERMOSTAT
AIR HANDLER
C
Y1
Y2 Y2
O
W
X/L X/L
R
HUM
W2
E
G
HUMIDISTAT CONTACTS OPEN ON HUMIDITY RISE.
1
HUMIDISTAT
JUMPER ON CFM SELECTION BOARD MUST BE
Y1, Y2, AND HUM LOCATED ON CFM SELECTION BOARD.
2
FIGURE 7: Typical Variable Speed Air Handler Thermostat Wiring
VARIABLE
SPEED
THERMOSTAT FURNACE
C
Y1 Y1
Y2
O
W
X/L X/L
R
HUM
Y2/Y
W2
E
W1/W
G
HUMIDISTAT CONTACTS OPEN ON HUMIDITY RISE.
1
HUMIDISTAT INSTALLED?
HUM LOCATED ON CFM SELECTION BOARD.
2
FIGURE 8: Typical Variable Speed Furnace Thermostat Wiring
6
2 -STAGE
2
AIR CONDITIONER
BLK
C
YEL
Y1
BLU/YEL
O
RED
R
1
Y
W1
G
REMOVED
2 2-STAGE
AIR CONDITIONER
BLK
C
YEL
BLU/YEL
O
RED
R
1
G
YES
JUMPER MUST BE IN POSITION.
THERMOSTAT
C
Y1
Y2
O
W
X/L
R
E
G
HUMIDISTAT CONTACTS OPEN ON HUMIDITY RISE.
1
.
HUMIDISTAT
JUMPER ON CFM SELECTION BOARD MUST BE
FIGURE 9: Typical Previous Generation Variable Speed Furnace
Thermostat Wiring
VARIABLE
SPEED
2-STAGE
FURNACE
AIR CONDITONER
BLK
C
YEL
Y1
BLU/YEL
Y2
O
X/L
RED
R
1
HUM
Y
W2
W1
G

Unitary Products Group

REMOVED
.