Carrier 33CS420-01 Installation Instructions Manual page 18

Adding a 2nd Stage of Cooling (MISC1) and a 3rd Stage of Heating (MISC3)
W2
MISC1
RS2
MISC3
RS+5
RSGND
W3
HUM
DEHUM
MISC3 MISC2 MISC1
3rd Stage Heat
2nd Stage Cooling
W1/O/B
Y1
G
MISC2
R
C
ELEC
GAS
W3
HP
HUM GAS
DEHUM
Y2 B
(MISC1
MISC3 MISC2 MISC1 ONLY) O
W1
W2
Y1
MISC1
G
RS2
MISC2
MISC3
RS+5
R INSTALL HUMIDITY
MODULE WITH SENSING RSGND
ELEMENT OUTWARD
C
Y2
(MISC1
ONLY)
Page 5.6
Carrier
5