EC AP MKT
Page 10
Confidential and Proprietary
Main Application
Opened
Closed
100%
0%
50%
Output1: Heating
Output2: Cooling mode
Temperature increase
Heating setpoint
Cooling setpoint
Zero energy band
Setpoint centered in zero energy band
3. Four pipe AHU
• Hot water heating coil + Water cooling
coil or sprayer sequence control
– Setpoint is located in the mid of Zero
Energy Band
– Cooling is 2 position output
– Heating is modulating control and
proportional to measured temperature
• Emergency Interlock
– Under normal status, DI is closed. If
emergency happens, DI open. The
controller will reset all output, then cut
off the power.
– The controller only can be restarted by
manual operation
T
AI
DI
DO
AO
