Van Air Systems FP-4 Installation, Operation & Maintenance Instructions Manual page 15

WIRING APPLICATIONS (EXAMPLES)
SENSOR A
L1
(HOT)
24 VAC
L2
+
C
LOAD
NC
COM
4
C
NO
NO
LOAD
NO
1 COM
COM
LOAD
NO
2
COM
LOAD
NO
3
Fig. 9. Wiring for four-stage control – 24 Vac input
and 24 Vac load.
SENSOR A
T
T
+
C
1
NO
NO NO
COM
C
C
NC NC
1 FOR 240 VAC LOAD, CONNECT TO 240 TERMINAL.
Fig. 10. Wiring for two-stage control with 120 or 240
Vac (120 Vac input and 120 Vac load shown).
T
T
NC
C
NO
NO NO
C C
NC NC
M24476A
120V
COM
L1 (HOT)
POWER SUPPLY
L2
NO
LOAD 2
COM
LOAD 1
M24477A
T775A/B/M SERIES 2000 CONTROLLER
T
T
+
C
NC NC
COM
C
C
NO
NO
NO
NO
NO
COM
C
NC
LOAD 1
LOAD 4
1 FOR 240 VAC LOAD, CONNECT TO 240 TERMINAL.
Fig. 11. Wiring for four-stage control with 120 or 240
Vac (120 Vac input and 120 Vac load shown).
1
NO NO
C C
NC NC
BARCODE
1 CLOSE RELAY TO DRIVE DEVICE OPEN. RELAY 1 SHOWN.
(RELAYS 1 AND 3 ARE USED FOR OPEN).
CLOSE RELAY TO DRIVE DEVICE CLOSED. RELAY 2 SHOWN.
2
(RELAYS 2 AND 4 ARE USED FOR CLOSE).
THE RELAYS MUST BE WIRED IN PAIRS WITH RELAYS 1 AND 2
BEING THE FIRST PAIR, AND RELAYS 3 AND 4 BEING THE SECOND PAIR.
Fig. 12. Wiring for floating output (Relay 1 and Relay 2
pair shown).
7
SENSOR A
120V
COM
1
LOAD
3
NO
LOAD
C
2
NC
M24478A
120/240 VAC LINE
2
DEVICE
NO
COM
OPEN
COM
CLOSE
COM
NO
M24479
62-0254–03