DDC System

The value of modular design

The existing system is a constant volume system with primary heating and cooling being done at 1 of 12 AHU's.
Each room has a radiant heating panel and a reheat coil. The roomstat provides temperature sensing, setpoint is set manually by the system operator.
1 USAC20 with a DO8 expander is used to control 4 rooms via one DDC controller.
Room 1
IP1-RM1TEMP
DO1-RM1RAD
DO2-RM1RHO
DO3-RM1RHC
Room 2
IP2-RM2TEMP
DO4-RM2RAD
DO5-RM2RHO
DO6-RM2RHC
Room 3
IP3-RM3TEMP
DO7-RM3RAD
DO8-RM3RHO
DO9-RM3RHC
Room 4
IP4-RM4TEMP
DO10-RM4RAD
DO11-RM4RHO
DO12-RM4RHC