Brochure
Table Of Contents
- TABLE OF CONTENTS
- T775 APPLICATION TIPS
- COMPATIBLE COMPONENTS
- FEATURES
- T775 OPERATIONS
- T775 APPLICATIONS
- Water Source Heat Pump Loop Water Controller - T775B
- Chiller - T775B
- Chiller, Rotary Compressor - T775B
- Cooling Tower Control - T775B2040
- Time-based Control of Fan, Pump, etc. - T775 (all models)
- Damper or Valve Modulation - T775M or T775R
- Hot Water Reset - T775R
- Chilled Water Reset - T775R
- Multi-Stage Boiler Control (No Reset) - T775P
- Multi-Stage Boiler Control (Reset) - T775P
- Multi-Stage Boiler Control (Reset) (continued)
- Multi-Stage Chiller Control (No Reset) - T775P
- 4 Stage with Pump Output and Reset - T775P using a T775S Expansion Module
- 4 Stage with Pump Output and Reset (continued)
- 3 Stage Reciprocating Chiller - T775L
- 4 Stage Heat and 6 Stage Cool - T775L
- 4 Stage Heat and 6 Stage Cool (continued)
- Pressure with a Variable Frequency Drive (VFD) - T775U
- Carbon Dioxide (CO2) Sensing - T775U
- T775 APPLICATION REPLACEMENT EXAMPLES
- T775M2030 Replacement for W973A Logic Panel
- T775M2030 Replacement for W973A Logic Panel (continued)
- T775M2030 Replacement for W973A Logic Panel (continued)
- T775R Replacement for W964F Aquatrol Panel with Floating Actuator
- T775R Replacement for W964F Aquatrol Panel with Floating Actuator (continued)
- T775R Replacement for W964F Aquatrol Panel with Floating Actuator (continued)
- T775L Replacement for S984 Step Controller
- T775L Replacement for S984 Step Controller (continued)
- T775L Replacement for W7100C Discharge Air Controller
- T775L Replacement for W7100C Discharge Air Controller (continued)
- T775L Replacement for W7100C Discharge Air Controller (continued)
- T775 CROSS REFERENCE
- NOTES
T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
63-7147—3 38
T775L Replacement for W7100C Discharge
Air Controller (continued)
NOTE: Fig. 41 is for wiring purposes only. A thorough review
of the existing W7100C application is required in
order to determine the capability of the T775
controller replacement.
Fig. 41. T775L Wiring Connections for Replacing a W7100C Discharge Air Controller.
NOTE: The T775L Replacement for W7100C Discharge Air Controller continues on the next page.
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