KMC Controls SimplyVAV BAC-8001 User Manual

Dual duct
A dual duct installation consists of separate primary heating and cooling ducts, both with
control dampers and airflow monitoring. For this type of installation a SimplyVAV BAC-8007
controls the cooling air (primary) damper and a TSP-8001 actuator controls the heating air
(secondary) damper.
l As the space temperature rises above the cooling setpoint, the primary airflow is
modulated from the Cooling Minimum flow to the Cooling Maximum Flow.
l As the space temperature falls below the heating setpoint, the secondary airflow is
modulated from the Heating Minimum flow to the Heating Maximum Flow.
l Between the heating and cooling setpoints, both the primary airflow and secondary
airflow are modulated to maintain the Dual Duct Minimum airflow.
See the topic, Dual-duct application on page 47 for an application drawing.
Illustration 7–7 Dual duct sequence
Max. cooling airflow
Airflow increase
Max heating airflow
Dual duct
minimum
airflow
Room temp increase
HTG SPAN CLG SPAN
HTG SP CLG SP
MIN
CLG
CFM
MIN
HTG
CFM
SimplyVAV Section 7: Sequences of operation
Revision H 61

KMC Controls SimplyVAV BAC-8001 Specifications

General

Brand	KMC Controls
Model	SimplyVAV BAC-8001
Category	Controller
Language	English