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Intelligent Control
For Any Sized System.
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HVAC Concepts (HVACC)
Controls Contractor, System Integrator, and Manufacturer
- HVACC has been in business over 19 years -- concentrating on controlling and monitoring facilities throughout the Washington, DC Metropolitan area.
- HVACC identified the change in the control industry from proprietary to interoperable systems and has made substantial investments in understanding, integrating and supporting LonWorks based systems.
- HVACC has maintained and supported all of its installed systems. Over 99% of all systems ever installed in the company's 19 year history are still running at 100% capacity.
- HVACC operates a 24-Hour Monitoring and Service Center to handle alarm functions and customer service needs.
- HVACC can select, install, integrate, and support LonWorks based products from hundreds of manufacturers including products from leading national controls companies. This enables HVACC to select the BEST product available for the application.
- HVACC is an Authorized Tridium System Integrator and is experienced in presenting LonWorks, Bacnet, Modbus, and several proprietary control networks via the web with the Tridium JACE Controllers.
- HVACC is committed to continue developing its web site and web services to provide easy access to: (1) support data (control drawings, data sheets), (2) site data (alarm information, service call tracking, multiple site reports, utility reports), and (3) software and site specific file updates.
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 Topic: HVACC / CompanyThe new items published under this topic are as follows.
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Friday, June 16, 2006 - 02:50 AM
Local control and display for Turbocor retrofit of 270 ton Carrier 23XL Screw Chiller. Tridium JACE-2 Controller running Niagara AX using hardwired I/O, Modbus for full status reporting from compressors, BacNet/IP for integrating data with building automation system. A HVAC Concepts, Inc. Field Display directly connected to the JACE-2 via its second Ethernet port is used for a local display. The chiller controller provides a full featured sequence to properly run and manage a centrifugal chiller and associated equipment.
<img src="/images/hvacc/turbocor/dtturbopanel1_12.jpg" width=160 height=128> <img src="/images/hvacc/turbocor/dtturboinside1_12.jpg" width=160 height=128>
Why a Turbocor Retrofit? Efficiency is of utmost importance in today’s world of escalating utility costs and chillers are by far the biggest energy consumers in the building. However, replacing the chiller is not always the best option, especially when the mechanical equipment is difficult to reach with a crane or is below grade. The largest chiller efficiency gains are accomplished through compressor technologies and intelligent digital control. Retrofitting an existing chiller with Turbocor compressors can often show the best life-cycle return on investment.
Note: The Turbocor compressors are amazing. With only pumping background noise going from off to full load (close to 300 tons) there is no outright cues that the compressor is running – no noise, no vibration, nothing. If you’re not looking at readings telling you the compressor is running you wouldn’t believe it. Wow.
Read full article: 'Multi-Compressor Turbocor Retrofit Controller' (2531 bytes more)  
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Tuesday, July 27, 2004 - 11:19 PM
Join our team installing and servicing state of the art Web-enabled systems using the latest open systems technology and legacy integrations from Tridium, Siebe, Honeywell, and many others.
Top pay and benefits. E-mail Kevin Perdue, President (kperdue@hvacc.net)
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Saturday, May 22, 2004 - 08:17 PM
Field Display v1.2.0 - Released in BETA! A number of important changes and corrections have been made. Field Display Product Page.
NEW FEATURES
(1) Tridium Time Schedule and Special Event Editing! (Add Screen Shots)
(2) New Idle Modes (Logoff, BackLight Only Off, None)
(3) Network setup displayed on power up after successful ethernet open.
(4) Invalid Monochrome BMP files flagged
BUG FIXES:
(1) Screen updates immediatly after an edit
(2) Fixed double update in group switching
(3) Increased DHCP timeouts
(4) Menu Text would flash on update if no background bitmap
(5) Enter on JACE PW config creates blank password instead of space password
(6) Correctly Display Degree Symbol
(7) Network init logic fixed
(8) Blank Group Displayed one random item from previous group
(9) BMP files larger than 12k would make operation of the FD unpredictable
(10) PW for config only would still cause password to be entered to edit items.
(11) FD will not function behind some proxy servers. Two problems - 1-some proxy servers return http 1.0 respones to http 1.1 requests, and 2-http get request was being made with extra bytes appended to the packet after the header (invalid).
Note: Please Upgrade to 1.2.1f - Several Issues have been reported and corrected from the 1.2.0 beta release.
(1) New Feature: Configurable number of prefix characters for edit items
(2) Bug Fix: Delete last daily schedule entry reset
(3) Bug Fix: New schedule entry reset
(4) Bug Fix: Schedule minute entry limited to 23
(5) Bug Fix: Edit MSO last enum dropped (introduced in 1.2.0)
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Saturday, May 08, 2004 - 05:51 PM
May 5th, 2004 - HVAC Concepts, Inc. was presented with Tridium's 2003 Niagara Framework Technology Innovation Award!
Excerpt from Award Letter - "There are over 400 Niagara Framework partners worldwide who sell, install, and support Niagara Framework solutions. This award acknowledges HVAC Concepts as a leader in the Niagara community, and among the most progressive organizations in the industry."
Ed Merwin (Tridium), Kevin Perdue (HVAC), Daniel Drury (HVAC)
Note: Unfortunately, this award caught us by surprise. The awards were given at breakfast on the last day of the conference. We were dressed and ready for golf.
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