Carrier 33CS - Circuit Board Layout

7
110 VAC
TIMECLOCK
TRANSFORMER
ISOLATION
RELAY
COIL
THERMOSTAT
THERMOSTAT
THERMOSTAT
CK1
GND
CK1
GND
CK1
GND
L
L
2
3
L
1
L
1
L
3
L
2
A
B
C
SITE
POWER
24 VAC
UNIT WITH
TRANSFORMER
ON L AND L
3
2
24 VAC
UNIT WITH
TRANSFORMER
ON L AND L
2
1
NOTE: Additional relays may be used. Relay coils must be connected in parallel.
Fig. 5 — Typical Dry Contact Switch Wiring
Fig. 6 — Example of Unit Phasing