Carrier 58MVP Troubleshooting Manual page 34

THERMOSTAT
R
K
1
W
K
2
Y
G
C
K
FIELD-SUPPLIED
1
K
24-VAC SPST RELAYS
2
Fig. 2—Isolation of W/W1 and Y/Y2
Thermostat Circuits
UNIT SIZE (BTUH)
40,000
60,000
80,000
100,000
Appendix B
Isolation Circuits
FURNACE
CONTROL
BOARD
R
K
K 1
2
OUTDOOR
UNIT
W /
W1
Y /
Y
Y2
G
Com
C
Appendix C
Pressure Check Diagram
HIGH-PRESSURE SWITCH
Make Point
1.81 in. wc max
1.81 in. wc max
K –FIELD-SUPPLIED
1
24-VAC SPST RELAY
R
W
Y
G
C
THERMOSTAT
A95097
Fig. 3—Isolation of Outdoor Unit with a Separate
0-4 IN.
SLOPE GAGE
Break Point
1.63 in. wc ± 0.05
0.75 in. wc max
1.63 in. wc ± 0.05
0.95 in. wc max
34
FIELD-SUPPLIED
24-VAC (40VA)
TRANSFORMER
R
W
/
W1
Y
/
Y2
K
1
G
K
1
Com
FURNACE OUTDOOR
UNIT
CONTROL
BOARD
24-v Supply
A95050
LOW-PRESSURE SWITCH
Make Point Break Point
0.60 in. wc ± 0.05
0.80 in. wc ± 0.05
120VAC
C
Y
A95098