Carrier WeatherMaker 38YDB Installation Instructions Manual page 14

THERMIDISTAT
CONTROL SINGLE-STAGE
MODEL RH FURNACE
RVS COOLING O/ W2
COOL/HEAT
Y1/W2
STAGE 1
W/W1
HEAT STAGE 3
COOL/HEAT
Y/Y2
STAGE 2
FAN
G
24 VAC HOT R
24 VAC COMM C
DHUM
N/A
HUMIDIFY HUM
B
N/A
S1
OUTDOOR
SENSOR
S2
CONNECTION
See notes 7, 11, 14, 15, 16, 17, 18 and 25
TWO-SPEED
HEAT PUMP
O
Y1
W1
W
Y2
Y
G
R
R
C C
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
L
OTHER BRAND
TWO-SPEED
THERMOSTAT
24 VAC HOT
R
24 VAC COM
C
HEAT STAGE 3 W2
COOL/HEAT
Y2
STAGE 2
FAN
G
EMERGENCY
E
HEAT
O
RVS COOLING
COOL/HEAT
Y1
STAGE 1
H
R1
Fig. 13—Typical 24-V Circuit Connections (Cont'd)
PROGRAMMABLE
DUAL FUEL
THERMOSTAT
MODEL DF
24 VAC HOT
FAN
HEAT STAGE 3
(FURNACE)
COOL/HEAT
STAGE 2
(COMPRESSOR HI)
RVS COOLING
COOL/HEAT
STAGE 1
(COMPRESSOR LO)
24 VAC COM
N/A
RVS SENSING
OUTDOOR
SENSOR
CONNECTIONS
A00366
SINGLE-STAGE TWO-SPEED
FURNACE HEAT PUMP
R
C
W
G
Y
See notes 11, 14, and 24
N
14
SINGLE-STAGE
FURNACE
R
R
G
G
W/W1
W
Y/Y2 Y
O/W2
Y1/W2
C
C
B
L
OUTDOOR
S1
SENSOR
S2
See notes 7, 11, 14, 15, and 26
M
R
C
W1
Y2
O
Y1
A00332
TWO-SPEED
HEAT PUMP
R
W1
Y2
O
Y1
C
A00367