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MODEL 2S
TWO-SPEED
THERMOSTAT
EASY SELECT
AIR CONDITIONER
TERMINAL BOARD
DH
J1
JUMPER
24 VAC HOT
R
R
R
FAN
G
G
Y1
COOL STAGE 1
Y1
Y1/W2
Y/Y2
Y/Y2
Y2
COOL STAGE 2
REMOVE
HEAT STAGE 1
W/W1
W1
J2 JUMPER
FOR HEAT
STAGING
HEAT STAGE 2
O/W2
W2
O
24 VAC COMM
C
C
C
N/A
B
OUTDOOR
S1
SENSOR
See notes 2 and 8
CONNECTION
S2
ON
SUGGESTED DIP
SWITCH SETTINGS
A
B
C
D
OFF OFF ON OFF
A98500
→ Fig. 17—Two-Speed Air Conditioner
with Variable-Speed Fan Coil
(FK, FV, 40FKA)—Model 2S Thermostat
SPLICE
MODEL AC
BOX
THERMOSTAT
RED
24 VAC HOT
R
GRN
FAN
G
WHT
HEAT STAGE 1
W/W1
YEL
COOL STAGE 1
Y/Y2
O/W2
N/A
Y1/W2
N/A
BRN
24 VAC COMM
C
N/A
B
OUTDOOR
S1
See notes 1 and 11
SENSOR
CONNECTION
S2
ON
SUGGESTED DIP
SWITCH SETTINGS
A
B
C
D
A98502
→ Fig. 19—Single-Speed Packaged Air Conditioner
with Single-Stage Gas Furnace (48SS, SX)
MODEL 2S
TWO-SPEED
THERMOSTAT
EASY SELECT
HEAT PUMP
TERMINAL BLOCK
DH
J1 JUMPER
24 VAC HOT
R
R
R
G
G
FAN
COOL/HEAT
Y1/W2
Y1
Y1
STAGE 1
RVS COOLING
O/W2
O
O
COOL/HEAT
Y/Y2
Y/Y2
Y2
STAGE 2
HEAT STAGE 3
W/W1
W1
W2
J2 JUMPER
W2
W3
24 VAC COMM
C
C
C
N/A
B
OUTDOOR
S1
See notes 3, 8, 9, and 11
SENSOR
CONNECTION
S2
ON
SUGGESTED DIP
SWITCH SETTINGS
A
B
C
D
OFF OFF OFF OFF
A98501
→ Fig. 18—Two-Speed Heat Pump
with Variable-Speed Fan Coil
(FK, FV, 40FKA)—Model 2S Thermostat
SPLICE
HEATER
MODEL AC
BOX
CONTROL BOX
THERMOSTAT
N/A
Y1/W2
GRN
FAN
G
WHT
HEAT STAGE 1
W/W1
WHT
YEL
COOL STAGE 1
Y/Y2
O/W2
N/A
RED
R
24 VAC HOT
BRN
24 VAC COMM
C
BRN
B
N/A
OUTDOOR
S1
See notes 1, 11, and 12
SENSOR
CONNECTION
S2
ON
SUGGESTED DIP
SWITCH SETTINGS
A
B
C
D
OFF OFF OFF OFF
A98503
→ Fig. 20—Single-Speed Packaged Air Conditioner
with Single-Stage Electric Heat (50SS, SX, ZP)
Page 11
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