Honeywell T775 Series 2000 - Page 39

T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
39 63-7147—05
T775L Replacement for S984 Step
Controller (continued)
NOTE: Fig. 47 is for wiring purposes only. A thorough review
of the existing S984 application is required in order to
determine the capability of the T775 controller
replacement.
Fig. 47. T775L wiring connections for replacing a S984 Step Controller.
In this replacement application, the T775L provides the following, as described in Table 4:
M28018
T775 BUS TERMINALS PROVIDE WIRING CONNECTIONS TO/FROM T775L AND T775S.
SETUP THE CONTROL (T6031 OR T765) SO THAT IT CLOSES ON A TEMPERATURE FALL.
POWER WITH 24 VAC OR 120/240 VAC AT THE APPROPRIATE TERMINAL BLOCK.
24 VAC POWER TERMINAL BLOCK.
1
2
T775L T775S
C
NO
NC
C
NO
NC
C
NC
NO
C
NC
NO
T
T
+
–
L1
(HOT)
L2
24 VAC
COM
NO
COM
NO
COM
NO
COM
NO
HEAT
2
HEAT
1
C
NO
NC
C
NO
NC
C
NC
NO
C
NC
NO
+
–
3
120 VAC
COOL 3
COM
NO
1
SENSOR A (C7100D1001)
1
C
+
C
+
RELAY
3
RELAY
7
RELAY
6
RELAY
5
RELAY
2
RELAY
1
RELAY
4
RELAY
8
120
COM
240 120
COM
240
T
T
COOL 4
COM
NO
SENSOR B (SPACE OR OUTDOOR TEMPERATURE)
–
+
DIGITAL INPUT
(HEAT/COOL CHANGEOVER)
T6031 OR T675A
2
3
COOL 1
COOL 2
4
4
3
4