Commissioning Instructions
4
Siemens Industry, Inc.
A6V11668992
Restricted
2019-03-12
Scope and Purpose
This document provides an overview of Duct Static Pressure Reset strategies and
describes how to configure Central Functions to set up static pressure reset using DXR
automation stations.
Duct Static Pressure Reset is a common method for optimizing pressure in the ducts so
that all zones are satisfied and none are starved for air. It is addressed in a number of
BAS (building automation system) standards and guidelines - see Appendix.
There are many ways to comply with the standards as they are intentionally vague. For
example, California Title 24 explicitly states the option of using “other methods” to
optimize duct pressure. This document provides guidance on using one method in
particular – saturation signals – to manage Duct Static Pressure Reset in a simple and
efficient way. This method can be used to satisfy any/all of the BAS standards and
guidelines for Duct Static Pressure Reset.
This document describes how to
• Set up initial DXR application configuration parameters for pressure reset
• Set up a Central Function DXR in conjunction with the room controller
• Configure the use of saturation signals to control Duct Static Pressure Reset
DXR Templates and Central Functions
Templates from Hvac12 (VAV) and Hvac13 (FPB) DXR application types are used to
configure Duct Static Pressure Reset. These applications come with datapoints that can
be used in conjunction with AHU primary plant controllers to control and monitor the zone
dampers for reset. In addition, a Central Function DXR can be used to easily bridge data
between the zones and the AHU. The DXR template applications and Central Function
DXR together allow for efficient collection of room data for use in Duct Static Pressure
Reset.
Title 24 Fault Detection for VAV and FPB Templates
For compliance with Title 24, an FDD configured template must be used.
FDD templates are located on StdApps under Apogee > Desigo_ABT >
CustomApplications > FaultDetection.
Terminology
"ABT Inside" - new term that replaces ABT SSA (Setup & Service Assistant).