Carrier 33CS Installation, Start-Up, And Operating Instructions Manual page 8

110 VAC
TRANSFORMER
NOTE: Additional relays may be used. Relay coils must be connected in parallel.
A
SITE
B
POWER
C
1101
TIMECLOCK
ISOLATION
RELAY
COIL
→
Fig. 8 — Typical Dry Contact Switch Wiring
L
1
TRANSFORMER
ON L AND L
→
Fig. 9 — Example of Unit Phasing
8
L
L
3
2
24 VAC
UNIT WITH
2
3
CK1
THERMOSTAT
CK2
CK1
THERMOSTAT
CK2
CK1
THERMOSTAT
CK2
L L
L
3
1
2
24 VAC
UNIT WITH
TRANSFORMER
ON L AND L
1 2