Application

Application Notes
Dual Duct Sequence Configurations
9
Siemens Industry, Inc.
Application Note
A6V11692053
Smart Infrastructure – Building Products
2019-04-01
Color legend for graphics:
• Red = heating
• Blue = cooling
• Green = ventilation
• Yellow = total air flow
Ventilation
source
Ventilation
in deadband
Control
strategy
Use
case
Schedule
Cold duct only
Cold duct
- -
1a
Hot duct only
Hot duct
- -
1b
Both ducts
Cold duct
Mixing control
2a
Snap acting
3a
Hot duct
Mixing control
2b
Snap acting
3b
Last duct
Mixing control
2c
Snap acting
3c