Rapidzone Operation: Network Data Sharing

1. Discharge air temp information is broadcast to zone controllers via E-Bus Discharge Air Temp DAT DAT DAT TL TL TL Rapidzone Operation: Network Data Sharing RTU Z1 Z2 Z3 • Terminal load information is sent to RTU controller via E-Bus Terminal Load

2. DAT in DAT Suitable? MOD Open Y N Occupied mode? Damper Min Pos Y N Damper Closes Zone Controller Operation: DAT Control

3. Setpoint Knob Operation • Setpoint knob determines centre of deadband between heating and cooling Example: • deadband is set for 6° • knob set for 73° • heat setpoint becomes 70 ° • cool setpoint becomes 76 ° • deadband exists between 70 ° - 76 ° Heating Setpoint Cooling Setpoint Deadband 73 70 76

4. Terminal Load: zone deviation from setpoint Terminal Load is broadcast from each zone to RTU via E-Bus < 20 % zone is satisfied > 20 % zone requires heating or cooling Zones can be configured as ‘priority’, terminal load multiplied by 1.5 163% Cool On +20 % Deadband 0 % Zone Satisfied -20 % Heat On -163% Rapidzone Operation: Terminal Loads

5. RTU will run in cooling mode until Zone 3 is satisfied (TL drops below 20%) Zones 1 and 2 remain closed or in minimum position Z1 Z2 Z3 TL + 18 TL + 18 TL + 25 Terminal Load RTU

6. Z1 Z2 Z3 TL - 25 TL + 18 TL + 25 Terminal Load RTU • RTU will alternate between heating and cooling until: • zone 1 heating satisfied • zone 3 cooling satisfied • Zone 2 remain closed or in minimum position • Length of Heat / Cool runtime entered by Rapidzone software

7. Z3 TL + 25 Terminal Load RTU • Zone 2 configured as priority zone, terminal load multiplied by 1.5 • RTU will alternate between heating and cooling until: • zone 2 heating satisfied • zone 3 cooling satisfied • Zone 1 remain closed or in minimum position • Length of Heat / Cool runtime entered by Rapidzone software Priority Z1 Z2 TL + 18 TL - 18 x 1.5 TL - 27