HVAC DDC Open
Systems
Frank Shadpour, P.E.
SC Engineers, Inc.
Frank Shadpour, P.E.
President of
SC Engineers, Inc.
www.scengineers.net
Frank@scengineers.net
ASHRAE Fellow
ASHRAE TC 1.4
Past President - ASHRAE
Instructor - UCSD
USC Graduate
Author of “Fundamentals of HVAC DDC”
Our Distinguished Guests
Sara Page
Rady Children’s Hospital
James Page
Amylin Pharmaceuticals
Mike Tarantino
Poway School District
Jason Lawrence
Advanced Media Works
HVACDDC.com
Agenda
The Book Overview
DDC Open Systems
Global Commissioning
Online Training
Panel Discussion
The Book Overview
The Book Overview
DDC Open Systems
Global Commissioning
Online Training
Panel Discussion
The Book Overview
A. The basics… 1,2,3
B. DDC Networking… 4,5,6
C. Hybrid Systems… 7,8
D. Control Components…9,10,11
E. Practical Scenarios… 12,13,14,15
F. Specifying DDC 16,17
DDC Open Systems
Chapter 4, 5 and 6.
The Book Overview
DDC Open Systems
Global Commissioning
Online Training
Panel Discussion
The Big Questions
1. Can I use an Open DDC system for my new facility?
2. Can I use an Open DDC system for my new addition?
3. Can I upgrade my existing DDC system to Open?
4. Can I utilize open DCC system for commissioning?
The Big Questions
1. Can I use an Open DDC system for my new facility?
2. Can I use an Open DDC system for my new addition?
3. Can I upgrade my existing DDC system to Open?
4. Can I utilize Open DCC system for commissioning?
Evolution of BAS
HVAC DDC
Evolution
System
Protocol
1980’s
GPC’s
None
1990’s
ASC’s
Proprietary
2000’s
Networking
Open &
Proprietary
2010’s
Web Services
Open
Web Services are selfcontained, modular
applications that can be run
over the Internet and can be
integrated into other
applications.
DDC - Open vs. Closed
Type
Open
Closed
Proprietary
LonWorks
Well-known
Manufactures
NonProprietary
BACnet
?
A BACnet Solution Model
Native BACnet
SOAP: Simple object
Access protocol. A
protocol that provides a
standardized XML
envelop for carrying
application specific
XML payloads.
Native BACnet
BACnet
o
BACnet Web-Services supersedes BACnet/IP
o
BACnet/IP: Or BACnet 2001. Conveys messages between
BACnet LAN via IP using a technique called Tunneling. It
supersedes BACnet 95.
o
PICS: Protocol Implementation Conformance Statement. The
capabilities of any particular device that should accompany
that device.
o
BIBBs: BACnet Interoperability Building Blocks. Each BIBB
states what BACnet feature must be implemented for client or
server to achieve communication. B-ASC and B-AAC are
standard BIBB replacements.
BACnet – Resources
o
ASHRAE SPC 135, http://www.bacnet.org/
o
BTL BACnet Testing Laboratory, http://www.bacnetassociation.org/
o
ASHRAE Guideline 13-2000,Specifying Direct Digital Control Systems
o
oBIX Open Building Information Exchange
http://www.obix.org/
o
OASIS: Organization for the Advancement of Structured Information
Standards
http://www.oasis-open.org/home/index.php
What is oBIX
BACnet/IP: Or BACnet 2005. Conveys
messages between BACnet LAN via IP using
a technique called Tunneling. It supercedes
BACnet 95.
PICS: Protocol Implementation Conformance
Statement. The capabilities of any particular
device that should accompany that device.
"Open Building
BIBBs: BACnet Interoperability Building
Blocks. Each BIBB states what BACnet
feature must be implemented for client or
server to achieve communication. B-ASC and
B-AAC are standard BIBB replacements.
Information Change"
OASIS: Organization for the Advancement of Structured Information Standards
A LonWorks Solution Model
LonTalk
A Router is
intelligent hardware
that filters the
passing of message
between two
network segments.
LonTalk
LonTalk
LonWorks
…
LonWorks…
LonWorks: is a family of hardware
products developed by the Echelon
Corporation
LonTalk: is the communication
protocol for LonWorks networks.
Similar to Ethernet LonTalk is CSMA.
However, does not have CD.
LonMark: is a brand name and an
association formed in 1994 to
promote and support those
manufacturers that produce LonWorks
products
What is PLC?
PLCs are miniature industrial
computers that contain hardware
and software that is used to
perform control functions. A PLC
consists of two basic sections:
the central processing unit (CPU)
and the input/output interface
system.)
The first PLC can be traced back
to 1968 when Bedford
Associates, a company in
Bedford, MA, developed a device
called a Modular Digital Controller
for General Motors (GM).
.
PLC, DDC or PAC ?
PLC
Programmable Logic Controller
1.
2.
3.
4.
5.
6.
Real Time Operating System
Predefined Fixed Software
Rugged Mechanical Package
Limited Applications
Simple control process
No Motion Control
RS Logic 500
PLC National Instrument
DDC/ PC
Direct Digital Controller
1.
2.
3.
4.
5.
6.
General Purpose
Easy Expansion
Commercial Use
Larger Memory Expansion
Windows Application
Not as Reliable
PLC Fandom
PAC
Programmable Automation Controller
1.
2.
3.
4.
5.
6.
RS Christmas Light
Real Time Operating System
Industrial Use
Rugged Mechanical Package
Reliable
Easy to expand
Large Central Plants
PLC Ladder Logic
HVAC DDC
Global Commissioning
The Book Overview
DDC Open Systems
Global Commissioning
Online Training
Panel Discussion
Using DDC as a Commissioning Tool
Green Building Management
Preventive Maintenance
Trouble Shooting
What is beyond?
Commissioning Phases & Steps
Phase
Step
Phase 1
Phase 2
Phase 3
Phase 4
Phase 5
Pre-design
design
Const.
Accept.
Post –
Accept.
Step 1
Plan
X
X
Step 2
Schedule
X
X
Step 3
Basis of Design Verification
Step 4
Procedures
Step 5
Shop Drawings Verification
X
X
Step 6
Installation Verification
X
X
Step 7
DDC Cx Verification
X
X
Step 8
Start up Verification
X
X
X
Step 9
Functional Performance Test
X
X
Step 10
Training Verification
X
X
X
X
X
X
X
X
X
X
X
X
X
Open Solution for energy Efficiency
Certification Level
Certified
26-32
Silver
33-38
Gold
39-51
Platinum
52 & Up
GREEN is Money… Money is GREEN!
Building Automation System strategies can
be applied to approximately 40% of the
criteria of the U.S. Green Building Council’s
Leadership in Energy & Environmental
Design (LEEDTM).
Energy Efficiency
Through Commissioning
Creates a Better World
Online Training
The Book Overview
DDC Open Systems
Global Commissioning
Online Training
Panel Discussion
LonWorks Lessons Learned
…
Learned…
Do’s
Don’ts
Define Interoperability Goals
General Definition of LonWorks
Lon over IP backbone
Vender specific Architecture
Coordinate with IS admin
Assume stand alone system
Flexible Field bus architecture
Specify only one method
Ownership of tools and licenses
Access only by one vender
Responsibility for integration
Specify in two places
Generic open specification
Vender’s hooks
Clear Sequence of Operation
Generic sequences
LonMark Certified Devices
LonMark Compatible Devices
Lon Object list
Generic interfaces
BACnet - Lessons Learned
…
Learned…
Do’s
Don’ts
Define Interoperability Goals
General Definition of BACnet
BACnet / IP backbone
Vendor specific architecture
Coordinate with IS admin
Assume stand alone system
Flexible field bus architecture
Specify only one method
Ownership of tools and licenses
Access only by one vendor
Responsibility for integration
Specify in two places
Generic open specification
Vendor’s hooks
Clear Sequence of Operation
Generic sequences
BLT certified devices
BACnet compatible devices
BACnet object list
Generic interfaces
Specialized Certificate
Design and Control of HVAC Systems
HVAC System Design . . . . . . . . . . . . .. . .April 2007
HVAC DDC Basics – Online. . . . . . . . . . . .June. 2007
HVAC Design Calculations . . . . . . . . . . . . .Sep. 2007
HVAC DDC Systems Design . . . . . . . . . . .. March 2008
HVAC DDC Networking . . . . . . . . . . . . .. . . June. 2008
http://onlinex.ucsd.edu/
Panel Discussion
The Book Overview
DDC Open Systems
Global Commissioning
Online Training
Panel Discussion
HVAC DDC Open
Systems
Frank Shadpour, P.E.
SC Engineers, Inc.