Carrier WeatherMaker 38YDB Installation Instructions Manual page 15

PROGRAMMABLE TWO-STAGE
THERMOSTAT FURNACE WITH PSC
MODEL 2S BLOWER MOTOR
COOL/HEAT
Y1/W2
STAGE 1
FAN
G
W/W1
HEAT STAGE 3
COOL/HEAT
Y/Y2
STAGE 2
RVS COOLING O/W2
24 VAC HOT
R
24 VAC COMM C
N/A B
S1
OUTDOOR
SENSOR
CONNECTION
S2
H
R1
THERMIDISTAT
CONTROL
MODEL RH BLOWER MOTOR
O/W2
RVS COOLING
COOL/HEAT
Y1/W2
STAGE 1
HEAT STAGE 3 W/ W1
COOL/HEAT
Y/ Y2
STAGE 2
FAN G
24 VAC HOT R
24 VAC COMM C
DHUM
N/A
HUM
HUMIDIFY
N/A B
S1
OUTDOOR
SENSOR
S2
CONNECTION
See notes 7, 11, 12, 14, 15, 16,
TWO-SPEED
HEAT PUMP
Y1 *
Y1
G
W/W1 W1
Y2
O
R
R
W2
C
C
Y/Y2
See notes 6, 7, 9, 11, 12,
14, 21, and 24
P
TWO-STAGE
FURNACE
WITH PSC TWO-SPEED
HEAT PUMP
O
*
Y1
Y1
W1
W/W1
Y2
Y/Y2
G
R
R
W2
C
C
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
17, 18, 21, and 25
R
Fig. 13—Typical 24-V Circuit Connections (Cont'd)
NON-PROGRAMMABLE
THERMOSTAT
MODEL 2S
24 VAC HOT
24 VAC COMM
HEAT STAGE 3
COOL/HEAT
STAGE 2
FAN
RVS COOLING
COOL/HEAT
STAGE 1
N/A
OUTDOOR
SENSOR
CONNECTION
H
R1
A00368
OTHER BRAND
TWO-SPEED
THERMOSTAT
24 VAC HOT
24 VAC COM
HEAT STAGE 3
COOL/HEAT
STAGE 2
FAN
EMERGENCY
HEAT
RVS COOLING
COOL/HEAT
STAGE 1
H
R1
A00370
15
TWO-STAGE
FURNACE WITH PSC
BLOWER MOTOR
R R
C
C
W/W1 W/W1
Y/Y2
G G
W2
Y/Y2
O/W2
*
Y1
Y1
B
S1
S2
See notes 6, 7, 10, 11, 12,
14, 21, and 24
Q
TWO-STAGE
FURNACE WITH PSC
BLOWER MOTOR
R R
C C
W/W1
W2
Y2
G G
Y/Y2
E
O
W2
*
Y1
Y1
See notes 6, 11, 12, 14, 21, and 24
S
TWO-SPEED
HEAT PUMP
R
C
W1
Y2
O
Y1
A00369
TWO-SPEED
HEAT PUMP
R
C
W1
Y2
O
Y1
A00371