Belimo Energy Valve wins the 2014 AHR Expo Innovation Award in the category of Building
Automation and will be honored at the ceremony on January 22 during the world’s largest HVACR exposition and conference in New York City. AHR Expo offers 3 full days of innovation, exploration and inspiration into the world of Heating, Ventilation, Air Conditioning and Refrigeration.
At the show, see the latest products and meet over 1900 exhibitors from manufacturers and supplies from over 30 countries, attend a wide variety of educational courses from ASHRAE and other companies. The AHR Expo offers you the opportunity to do business face-to-face and enables you to see product and how they work. The 2014 AHR Expo is co-sponsored by ASHRAE and AHRI. The Heating, Refrigeration and Air-Conditioning Institute of Canada (HRAI) is an honorary sponsor.
For more information visit the Show’s website at www.ahrexpo.com.
The 2014 AHR Expo Innovation Awards encompassing a broad cross-section of the HVACR marketplace, the winning entries were selected in 10 categories and represent the most innovative new products among the thousands that will be displayed at the 2014 AHR Expo. A panel of judges made up of ASHRAE members evaluated the products submitted based on innovation, application, value to the user and market impact.
The Innovation Awards are jointly sponsored by ASHRAE; the Air-Conditioning, Heating and Refrigeration Institute (AHRI); and the International Exposition Company (IEC), producers and organizers of the AHR Expo.
The 2014 AHR Expo Innovation Award winners by category are:
Company: Belimo Aircontrols (USA), Inc.
Product: Belimo BAS Data Logging Energy Valve
Company: Emerson Climate Technologies
Product: Next Generation Copeland Scroll Variable Speed compressor product line
Company: Lafert North America
Product: High Performance Metric Motors
Company: WaterFurnace International, Inc.
Product: 7 Series 700A11 Geothermal Heat Pump
Indoor Air Quality
Product: SKD Direct Multi-Steam Injection Humidifier
Company: Rheem Manufacturing Company
Product: Rheem Prestige Series Hybrid Electric Heat Pump Water Heater
Product: MADAP-KOOL System Manager AK-SM 800 Series
Company: HVAC Solution, Inc.
Product: Revit Connection 2.0 BIM Software Add-in
Tools & Instruments
Product: Imperial iManifold
Company: Big Ass Fans
Product: Haiku Ceiling Fan
One of these 10 category winners will also be selected as the overall winner of the
The 2014 AHR Expo Product of the Year Award winners will receive a placards to display at their booth during the Show as well as etched crystal awards to be displayed at their companies’ headquarters.
In addition, 37 other products were recognized with Honorable Mentions in these same 10 categories and will also be presented with placards to display in their booths.
The Honorable Mentions winners by category are:
AspectFT 2.0 Web-enabled BAS
Distech Controls, Inc.
ProgrammableVAV Controller (IRC)
SenseAir North America
tSense True Read CO2, RH and Temp Transmitter
Tekmar Control Systems, A Watts Water Technologies Company
Flexible, Multi-Stage Boiler Control 284
Baltimore Aircoil Company
New Series 3000 Cooling Tower
Toshiba Carrier Heat Recovery Variable Refrigerant Flow System
QTUBE Flexible Composite A/C and Refrigeration Lines
DT-X Desiccant Dehumidification Technology
RadiPac Series - K3G630 Plug Fan
ZIP Radiant Heating Ceiling Panels
Infinity 18VS Variable Speed Heat Pump
LG Electronics U.S.A., Inc
Art Cool Premier High Efficiency Duct Free Heat Pump
Mitsubishi Electric Cooling & Heating Solutions
H2i R2-Series Variable Refrigerant Flow Heat Pump
TruComfort Variable Speed Split System Heat Pump
SlimFit Commercial High-Efficiency Condensing
Belimo Aircontrols (USA), Inc.
ZIP Air-Side Economizer
Best Living Systems, LLC
MCI (Multi-Cluster Ionization) for Air Filtration
Plasma Air International
Plasma Ion BAR Bipolar Air Purifier
UVXact UV-C Intensity Monitor
Caleffi Hydronic Solutions
QuickSetter Balancing Valve
NPE-180/210/2405 Condensing Gas Tankless Water Heater
Watts Water Technologies, Inc.
TRITON Radio Frequency Pipe Fusion System
Baltimore Aircoil Company
Trillium Series Adiabatic Condenser
BITZER Kuhlmaschinenbau GmbH
New Ecoline Varispeed Reciprocating Compressor
Samsung Compressor Direct
Ultra T-20 Rotary Compressor
Parker Hannifin - Sporlan Division
ZoomLine Refrigerant Line Assembly
ComfortDRAW Design Tool for BAS
Emerson Climate Technologies
HVAC Check & Charge Mobile Application
Maxwell Systems, Inc.
ProContractorMX Mobile Connect Annotation Tool for iPad
Tools & Instruments
VT04 Visual IR Thermometer
Goodway Technologies Corp.
RAM-PRO-XL Tube Cleaner
Compact Swage Tool
Air Pear Destratification Fan
VentZone Zoned IAQ with Heat Recovery Kit
Building Performance Equipment, Inc.
Energy Recovery Ventilator
Modine Manufacturing Co.
Airedale ClassMate Vertical DX & Heat Pump Vent. System
Rosenberg USA, Inc.
B-Wheel Backward Curved Fan Impeller
ABOUT AHR EXPO
As the largest and most comprehensive HVACR exposition in the world, the AHR Expo attracts tens of thousands of attendees from all facets of the industry, including contractors, engineers, dealers, distributors, wholesalers, OEMs, architects, builders, industrial plant operators, facility owners and managers, agents and reps.
Since 1930, the AHR Expo has been the HVACR professional’s best resource for new products, new ideas and new services. This unique industry forum creates a dynamic marketing environment unequaled in size and scope by any other industry event.
The AHR Expo is produced and managed by International Exposition Company, 15
Franklin Street, Westport, CT 06880; telephone: 203-221-9232; fax: 203-221-9260; e-mail: firstname.lastname@example.org; website: www.ahrexpo.com.
The University of Miami medical campus saves thousands of dollars and increased plant capacity with the Belimo Energy Valve retrofit.
The University of Miami’s Leonard M. Miller School of Medicine says it prides itself on bringing medical research from “bench to bedside,” meaning doctors are providing patients in Southern Florida with the latest cutting-edge developments in medical care. On its sprawling campus and in its state-of-the-art buildings, doctors and researchers are unlocking the secrets to not only infectious diseases, but the future of stem cells and genetics.
What many people may not know is the preventative care that is going on behind the scenes when it comes to the university’s mechanical systems. At the heart of the university is a 47,000-sq-ft chiller plant with 12,000 tons of installed capacity, providing the much-needed cooling and chilled water for the campus’s hospitals and research buildings. While the chiller plant is still fairly new, having just opened in 2011, some buildings on campus were not operating as efficiently as they could, wasting thousands of gallons of chilled water. However, the problem was not with the chiller plant, but the cooling coils in several of the campus facilities.
The solution to the problem came in the form of the latest research and development from Belimo — The Belimo Energy Valve.
The diagnosis – Low Delta-T
It‘s a common mechanical illness - Low Delta-T. It occurs when air-handling coils are oversized, demand too much water, or foul and degrade with age. Poor system balance and improperly installed and controlled air handlers can also contribute to low Delta-T.
When this happens, air-handler efficiency and heat transfer plummets. In turn, chillers and pumps work overtime in order to maintain a given temperature set point. Return water temperature to the chiller is lower than the intended design forcing more water to be pumped through the system. As more and more gallons of water move through the system, not only is efficiency in question, but utility costs can go through the roof.
This was the diagnosis for some of the buildings on the University of Miami Medical campus. Even with a new chiller plant, and a mix of new and older facilities, low Delta-T was negatively impacting the efficiency on campus — that is until Kerney and Associates of Dania Beach, FL, stepped in.
The specialty piping and energy services company has had the University of Miami Medical campus as a client for several years, so when they learned about the Belimo Energy Valve, they knew it was something they had to share with the university, especially since Kerney and Associates specializes in retrofit opportunities that will provide a maximum return on investment for clients.
“We do a lot of business with them,” said Ron Bogue, Assistant Vice President for facilities and services at the UM Medical campus. “They came to us and introduced us to the Belimo Energy Valve line.”
The Energy Valve is a pressure independent valve optimizes and documents water coil performance. The valve includes an electromagnetic flow sensor and temperature sensors that monitor supply and return water. Differential temperature is monitored to make sure that the Delta-T across the valve is performing at the desired set point. If Delta-T drops, the valve modulates the flow of water at the coil, which improves system efficiency.
To make sure that the valve and the coils are working as specified, the valve also has BACnet capabilities. Each valve has a static IP address, allowing technicians on campus to
log on to the Internet, via a PC or tablet device, and check Delta-T readings and flow efficiency at the valve in real time.
“It is a very informative diagnostic tool,” said Bogue. “I’m a facilities guy who is definitely into preventative maintenance. We are always looking for ways to improve efficiency and preventative services on campus.”
With the valves BACnet capability, he says that much of the guesswork is taken out of the diagnostic component. Any efficiency issues with the valves, the coils, or with low Delta-T can be quickly identified and fixed. Technicians can even change the flow of the valve or modify parameters remotely from their office or in the field.
“You can go online and make sure that the coil was designed to do what it was supposed to do,” said Bogue. But before Bogue was completely sold on the Energy Valve, he took it for a test run. The results were even bigger than expected.
To prove that the Energy Valve could do what it was designed to do, Scott Czubkowski, PE, Director of Engineering at Kerney Associates, installed the valve at the university’s Clinical Research Building. The building houses over 300,000 sq ft of research space, including research in pediatrics and pharmacology. It is also one of the newest buildings on campus, opening in late 2004. Even with the building less than eight years old, it was still lacking in efficiency.
On average, the building was seeing a 7-degree Delta-T and inefficient energy transfer.
“Some of the air handlers were three or four years old and were not performing optimally,” said Czubkowski.
An Energy Valve was installed on a 175-ton heat exchanger that was transferring energy at a 3-degree Delta-T. The results were verified through the valve’s analysis tool, which stores up to 13 months of system data in the actuator. Data includes absolute flow, absolute power, and temperature. All of these components can then be compared and analyzed to see improvements in the system. Czubkowski found that when the Belimo Energy Valve was installed the system reacted almost immediately.
At the initial start-up of the valve, Czubkowsi was able to see that heat exchanger’s Delta-T was at 3.5 with a gallon per minute (GPM) reading of 520. In less than an hour, the Energy Valve Delta-T Manager took over control of the coil and the Delta-T rose to 6.5 and the flow was reduced to 300, see Fiqure 1. The flow rate continued to drop as the day went on.
As heat exchanger performance increased, the entire building saw an improvement in Delta-T.
“The University started seeing a 10-degree Delta-T,“ said Czubkowski. “It went from a 7-degree to a 10-degree Delta-T within a day.“
That wasn’t all. Kerney and Associates found that within one hour, the system went from using 600 gallons of water to 100 gallons per minute. With those kinds of immediate results, Czubkowsi said that Bogue was able to validate that the technology worked.
If the Belimo Energy Valve could have that kind of result in a newer campus building, what kind of impact could it have on an older building? The university decided to purchase more of the Energy Valves and find out.
Older Building, Big Results
After the success of the Clinical Research Building, Czubkowski and his team tackled the university’s 450,000 sq ft Rosenstiel Medical Science Building. The 35-year-old building houses the internal medicine, hematology, and oncology departments.
Czubkowski illustrates in Figure 2 the potential savings a typical medical center could have.
Eleven major air-handling units at 30,000 cfm each serve the building. Some of the air-handling equipment is almost as old as the building itself, and the air-handling coils at the AHUs had degraded over time. Delta-T was hovering around 7 or 8, which according to Bogue, meant the system was “wasting thousands and thousands of dollars in energy.”
With the Belimo Energy Valve installed, the Rosenstiel Building started to see a Delta-T of 10.5 to 11.
According to preliminary calculations, Kerney and Associates believes that the University of Miami will see a three- to four-year payback on the valves it purchased for the Rosenstiel Building. Each of the 11 valves installed should create a $6,000 utility savings, bringing the total annual savings cost to an estimated of over $60,000.
And Bogue and his mechanical team can make sure that facilities such as the Rosenstiel Building continue to save on utility costs and keep adequate Delta-T readings. As part of its preventative maintenance initiative, Bogue frequently checks the valve performance in the buildings by using the BACnet capabilities.
“Each valve has an independent IP address,” he explained. “I can go in and look up the numbers.
It comes up on the screen and we can see the gallons per minute flowing through the valve.”
If Delta-T readings go under an intended set point, an alarm will go off to notify mechanical staff that there is a problem. Bogue said that the university is no longer dealing with a “blind side” when it comes to system efficiency and the amount of water that is being wasted
These results have prompted the University of Miami to continue installing the Belimo Energy Valve. Work is scheduled to install the valves at two more campus buildings. First on the list is the Batchelor Children’s Research Institute. The building will install four Energy Valves to control a 1,000-ton chiller load.
The newest building, the Biological Building, will also adopt the Belimo Energy Valve technology. Not only is it the newest building on campus, it also boasts the largest air-handling units on campus. When the air handlers are retrofitted, the university will be able to make sure their newest building is operating as intended and not wasting chiller water.
“Belimo has really stepped up the game,” said Bogue. “This is the leading edge of the future from a diagnostics standpoint.”
Download Case Study
Facilities professionals often choose not to invest in energy-efficiency upgrades because of perceived high upfront costs. But if armed with the right information, they can see that energy savings can make a retrofit project a more worthwhile investment.
Example: William Pecor, Assistant Supervisor of UCONN’s building operations had problems on hand with the pneumatic actuators that controlled the movement of fan blades to circulate air. The current pneumatic actuators were expensive to repair and replace as well as the process would be extremely time consuming and labor intensive.
The chemistry building management system at UCONN either calls for heating or cooling and when it does it needs the air quickly and at variable speed and volume. The chemistry building mechanical room consists of four large Air Handling Units (AHU,) that are approximately ten feet high by forty feet long. Each AHU has two chambers consisting of large guide vein fans that have variable angle blades, which controls the air velocity by Cubic Feet per Minute (CFM). These blades are currently controlled by a pneumatic linear actuator. The arm attaches to the actuator to pull or push to increase or decrease the angle of the blades. The arm moves approximately two inches in total in either direction and is controlled by the Building Management System (BMS). The critical part of the application is not the precision of movement, but the down time of the unit if the fan fails. If both fans were to fail at the same time, this would cause a handicap to the buildings access of fresh air and air across the coils.
In front of these fans is a large 8’ x 8’ damper section that is pneumatically controlled. When the fan is turned on the dampers open to allow more air to the coils. The entire building runs most of their HVAC devices off pneumatic actuators. The units have two chamber sides for redundancy with only one fan running per side at any given time. The fans are manufactured by Joy Fan Company, a division of Howden a world leader in fans and rotary heat exchangers.
Tower Equipment Co. with guidance from Belimo retrofit team was able to create a retrofit solution. The design included two fabricated UFSP0014 linkages utilizing a SY4-120MFT, non-spring return actuator with a crank arm. Calculations determined the SY4-120MFT with 3560 in-lbs of torque would move the arm of the fan at full speed. The SY would work off a 2-10 VDC control signal and would have a speed of 15 seconds. The MFT software would be utilized to limit the rotation to only 40 degrees for a 2” movement of the blade.
The linkage cost with the SY actuator outweighed the cost UCONN would have had to pay for replacing and repairing the pneumatic actuator unit. To purchase and/or repair the pneumatic were approximately $3000 to $4000 net with weeks of dangerous downtime. The Belimo fabricated retrofit linkages and SY actuator solution was installed in less than one week for less than $2000.00. Pecor was amazed and excited that a retrofit solution could be created that met his needs, kept within the specifications and carried a 2-year warranty. Since the install on the first two units, UCONN has moved forward with the installation of the next four fan units.
Pecor saved money, reduce down time, and kept the chemistry department running. The cost savings associated with switching to electronics also benefits UCONN in energy savings and a reduction in replacements. Speed of repair and installation was important with only one fan and no additional backup.
HVAC retrofit involves any project aiming to improve the efficiency of the system. HVAC upgrades can range from installing continuous environmental management systems, to replacing or retrofitting individual components of a system (valves, actuators, heat pump, air-side economizers, etc.). Belimo offers a retrofit technical documentation book for Valves, Actuators and air economizer HVAC. This book can be downloaded for free or request your free copy.
Periodic testing of life safety systems and dampers is required by the codes. While there is some state or local variation, the requirements are shown in Chart 1. While the focus of this article is the dampers, the entire smoke control system is required to be tested according to the schedule labeled “Smoke Control Systems & Dampers.” A clear distinction must be made among the damper applications in order to determine the schedule that conforms to codes. The second part of this article explains the differences among the dampers and applications.
Chart 1: Periodic testing requirement for dampers.
Codes and Referenced Standards
Chart 1 originates with two primary codes – the International Building Code (IBC)1 and the International Fire Code (IFC).2 It is the IFC that defines or references most testing requirements. It references NFPA 803 (fire) and NFPA 105 4 (smoke) directly for the containment damper requirements. These two standards have details on what to test or inspect, periodic requirements, and replacement information. The IFC does give the smoke control system requirements directly – 909.20.4 for dedicated systems and 909.20.5 for non-dedicated systems. NFPA 90A5 , NFPA 92A6 and NFPA 92B77 are frequently referred to with respect to testing. However, they are not referenced by the IBC or IFC and only with respect to smoke protected seating by NFPA 101, the Life Safety Code.8
Dampers Required by Chapter 7 of the International Building Code (IBC)
Chapter 7 of the IBC regulates fire resistive rated construction. Fire dampers are installed in fire walls, fire barriers, fire partitions, and horizontal assemblies. Smoke dampers are installed in smoke barriers, and smoke partitions. Combination fire and smoke dampers that are required by Chapter 7 can be installed in any of the applications that require both fire rated construction and smoke containment. They are meant to resist the passage of flames and smoke particulates.
Most fire dampers have fusible links that melt at (typically) 165°F (74°C) allowing gravity or a shaft spring to close the damper. Fire dampers are rarely actuated in the Americas (although they are regularly actuated in Europe so that they can be automatically tested). See Figure 2 for a typical curtain fire damper. There are several types and ceiling dampers are similar.
Figure 2 Curtain fire damper (photo courtesy of Greenheck Fan Corporation).
A smoke damper is connected to a duct smoke detector or to a relay from the fire alarm or smoke control panel. In event of a fire and concomitant smoke, an actuator springs closed to close the damper and prevent smoke movement from one area to another. All smoke dampers are actuated since there is no method to physically sense smoke and electrical control is required.
A combination fire and smoke damper looks very similar to a smoke damper, but has a high temperature sensor to close the damper from heat along with the local smoke detector.
Figure 3: Combination fire and smoke damper (drawing courtesy of Ruskin Company).
Combination fire and smoke dampers can be controlled several ways. Most commonly on modern dampers is use of an electrical temperature activated sensor-switch. When the contacts are closed, the actuator is powered and drives the damper open. When fire/heat is detected, the contacts open and the damper shuts. See Figures 3 and 4. In addition, a smoke detector or relay contact from the area smoke detection system panel is wired in series with the temperature switch. If smoke is detected, the contact opens and the actuator springs the damper closed. See Figure 3. The smoke detector is installed within 5 ft. of the damper or an area smoke detection system may control the damper’s closing. The wiring for the typical combination damper is shown in Figure 4.
Though not required by Chapter 7, in order to automatically test these dampers, position indication switches may be installed. They can power locally exposed monitoring lights or, typically via a network, indicate position to a testing panel. These dampers are best referred to as containment or compartmentation dampers as that is their function; this clearly distinguishes them from smoke control dampers discussed below. They are often referred to as “passive” protection although they are active in as much as they move to close holes in fire or smoke walls, barriers, and partitions.
Figure 3: Containment fire & smoke damper with smoke detector.
Figure 4: Controls and wiring for a combination fire & smoke damper.
Dampers required by Chapter 9 of the International Building Code (IBC)
IBC Chapter 9, Fire Protection Systems, regulates installation of engineered smoke control systems (as well as alarms and sprinklers). In order to remove smoke or prevent the movement of smoke into protected spaces, dampers, fans, architectural reservoirs, and smoke chimneys may be employed. These are considered active systems.
Some of the occupancies where smoke control systems are required are in atria, stairwells, underground buildings, and large spaces like malls and auditoriums. Some local codes also require additional protection in corridors and any exit passages.
The dampers employed for smoke control are generally of the same physical construction as those for containment. Some smoke dampers are aluminum whereas fire & smoke dampers are galvanized or stainless steel.
It is the control capability of the smoke control system damper that is different. The system is more sophisticated and requires coordination among alarms, sprinklers, fans, doors, and dampers. The containment damper is closed by only a local duct smoke detector) or in the case of the combination fire & smoke damper, by the detector or a single high temperature sensor. The detector can be mounted at the factory or field installed. UL555S requires that both the sensor and actuator be factory installed initially.
In particular, smoke control dampers are connected to the fire fighters’ smoke control system panel for manual override control and position indication and verification. These dampers are often referred to as “re-openable” since they can be manually opened or closed although they are normally in automatic mode. See Figure 5 for an example damper. Figure 6 shows the full wiring for override and position indication. Note that modern systems typically use a network for the long wire runs. For this example, discrete wiring is shown.
Figure 5: Smoke control system damper with sensors (photo courtesy of Pottorff).
Figure 6: Auto-Off-Manual switch and re-open able damper with sensors and actuator.
In addition to distinguishing between Chapter 7 and Chapter 9 dampers, there are two types of smoke control system dampers – dedicated and non-dedicated. A dedicated system is used for no other purpose than smoke control. For example, an atrium make-up air damper and atrium smoke exhaust fan damper are not used in day to day operation. A non-dedicated system is used for normal HVAC or ventilation and is operated on a regular basis. If it fails, a service call would be generated and it would require immediate repair. Failure of dedicated system dampers will not be evident without operation so they must be tested more frequently to ensure safety.
Other than stating that both initial and periodic inspection and testing of dampers are required, the codes do not detail how or precisely what steps are to be taken. However, the intent is clear – compliance with NFPA 80 and NFPA 105 along with damper manufacturer instructions are expected.
It is beyond the scope of this article to detail the standards; however, a brief description is provided below.
In NFPA 80, section 19.3 Operational Test, fire damper testing is detailed. The essential test is that the damper will open and close and no obstructions are present. NFPA 729 is referenced when any smoke detection is present. The operation must be under the airflow conditions that the system will encounter. Fusible links must comply with NFPA 90A and UL33.10 Documentation must be maintained and any deficiencies reported and corrective action noted. It also states that “repairs shall begin without delay” and following repair shall be operational tested again.
Both standards state the requirement for testing one year after installation and then every 4 years (hospitals 6 years).
NFPA 105 is worded very similarly to NFPA 80 and contains many of the same requirements. Chapter 6 Installation, Testing, and Maintenance of Smoke Dampers is the most important chapter with respect to testing smoke and combination dampers. An operational test is required upon installation and all indicating devices must work correctly. NFPA 92A is referenced for periodic inspection and testing. Repairs must “begin as soon as possible” and all maintenance must be documented.
One provision that bears examination is found in section 6.5.5: “The damper shall be actuated and cycled as part of the associated smoke detector testing in accordance with NFPA72, National Fire Alarm Code.” Smoke detectors must be tested yearly and when they are released, the actuator of the smoke or combination fire and smoke damper will spring closed (or for smoke dampers that must open, spring open). The sound of the actuator and the time it takes are tantamount to a test. Thus a sample inspection for blockage – very rare after construction is completed – could reduce cost of testing.
The Air Movement and Control Association (AMCA)11 have published a document with input from all the damper manufacturers titled Guide for Commissioning and Periodic Performance Testing of Fire, Smoke and Other Life Safety Related Dampers. It contains some of the material found in NFPA 80 and NFPA 105 along with other details. AMCA does not require the need for visual inspection of motorized dampers with end switches that communicate to a panel or lights.
Belimo Americas has also published a cross reference and instructions for replacement actuators on dampers.12 Included is a form to leave on site for the fire marshal or building official which complies with the documentation requirement of NFPA 80 and NFPA 105. These instructions focus on the old obsolete actuators from the 1980s to date. Often the dampers are in perfect condition and only one or more of the electrical components are defective.
The first step in establishing a periodic testing schedule for dampers is to identify whether they are employed for Chapter 7 or Chapter 9 code requirements. Once that is achieved, operational testing itself is straightforward. To what extent manual inspection is required for smoke control dampers is up to the local inspector. Since smoke control dampers have blade switches or their actuators have auxiliary switches, a test of the entire smoke control system will test the dampers and position indication is automatically shown on the fire fighters’ smoke control panel.
1International Building Code, 2012, International Code Council, Inc., Country Club Hills, IL 60478-5795.
2International Fire Code 2012, ibid.
3NFPA 80 Standard for Fire Doors and Other Opening Protectives , National Fire Protection Association, NFPA, 1 Batterymarch Park, Quincy, MA 02169-7471.
4NFPA 105 Standard for the Installation of Smoke Door Assemblies and Other Opening Protectives, ibid.
5NFPA 90A Stadard for the Instalation of Air-Conditioning and Ventilating Systems, op.cit.
6NFPA 92A Standard for Smoke-Control Systems Utilizing Barriers and Pressure Differences, op.cit.
7NFPA 92B Standard for Smoke Management Systems in Malls, Atria, and Large Spaces, op.cit.
8NFPA 101 Life Safety Code, National Fire Protection Association, op.cit.
9NFPA 72, National Fire Alarm Code, op.cit.
10UL 33, Standard for Heat Responsive Links for Fire-Protection Services, Underwriters Laboratories Inc. (UL), 333 Pfingsten Road, Northbrook, IL 60062-2096.
11 Air Movement and Control Association International, Inc. 30 West University Drive, Arlington Heights, IL 60004-1893 U.S.A.
12http://www.belimo.us/cms/sh/firesmoke/index.php BELIMO Automation AG.
The ZIP Economizer has been voted #1 in the 2013 Comfortech Product Showcase Awards in the category of Indoor Air Quality. Among all the entries in this category, the judges thought this is most innovative and useful product to HVAC contractors.
The Belimo ZIP Economizer offers airside energy savings with its patented ZIP Code High Limit Setup, compliant to ASHRAE 90.1, and California Title 24, 2 speed fan, and demand control ventilation (DCV) operation ensuring compliance with Standard 62.1. With fault detection and diagnostics (FDD), alarm history and additional RTU protection features the ZIP Economizer provides reliability backed with Belimo’s 5 year warranty.
“Having the judges recognizes the unique features and benefits of the ZIP Economizer, and receiving this award validates the valuable benefits to the contractor, service technicians, and end users of the ZIP Economizer”, states Vanessa Castro, Product Manager for Belimo.
The ZIP Economizer is unlike any other economizer on the market today – It gets energy savings back on track with its advanced logic, easy user interface, and superior troubleshooting capability. Users will now know instantly when failures occur and quickly pinpoint the problem and address it making the known issues with economizers a thing of the past.
Lean more at: www. ZIPeconomizer.com
With Pressure Independent Characterized Control Valve (PICCV), every system lives up to its full potential – saving time, money, and other precious resources.
It’s a fact. Efficient operation of a flow system cannot occur without effective flow balancing and control. System instability and even minor performance anomalies will rob owners of comfort and efficiency throughout the life of the system.
Pressure independent technology helps owners maximize the energy savings of variable flow pumping systems while addressing their unique control challenges.
PICCVs directly control the water flow required by the coil and is not affected by pressure fluctuations in the system. The valves are selected based on the GPM requirements of the coil without the need for Cv calculations. By precisely controlling the flow, pressure independent valves eliminate the need for balancing valves, thus reducing the installation and balancing cost. The biggest benefit for the owner comes in the form of energy savings by eliminating overflow thru the coil.
Pressure independent valves stabilize variable flow systems for a lifetime of efficiency and worry-free, automatic balancing.
Everyone agrees that variable flow pumping systems have the potential to save facilities significant pump energy cost. But all too often these savings quickly disappear due to complex flow issues. With pressure independent control technology only a single valve is required to maintain proper flow through each circuit. Each valve can be shipped from the factory pre-set for each circuit, so there is no additional balancing required. The system performs perfectly from start-up. And if a facility adds new circuits as a result of expansion, the flow control of existing circuits remains intact – so no rebalancing is required. Pressure independent valves can be used to regulate flow through air handlers, heating and cooling heat exchangers, fan coil units, unit ventilators and VAV re-heat coils.
How It Works
Pressure Independent Characterized Control Valves (PICCV) combine a differential pressure regulator with a 2-way characterized control valve to supply a specific flow for each set degree of ball opening – regardless of system pressure fluctuations. The valve performs the function of a balancing valve and control valve in one unit. Therefore, the flow characteristic and operation of the valve is not distorted when system variables change.
As flow passes through the valve, a uniquely designed differential pressure regulator moves according to the change in pressure above and below it. The regulator assembly adjusts to the differential pressure increasing and decreasing the orifice opening so the differential pressure across the characterized control valve stays constant. The valve maintains a constant exiting flow despite any and all changes in system activity that results in pressure variation (i.e. system expansion and or redesign).
New Offerings with Exceptional Value
Belimo released the PICCV with the LRB24-SA actuator which offers a complete package; a modulating balancing valve, flow verification orifice and pressure independent control valve in an economic package. Flow orifice (-F models) allow independent differential pressure gauge verification of flow.
The proportional control LRB24-SA actuator features a simple push button flow setter to field set required flow. When the coil design flow is less than the factory default setting adjustments are made instantly without tools. A perfect solution for custom flow needs.
- Factory set to max flow position – must be field adjusted to achieve required flow.
- Factory default flow setting is equal to the maximum GPM rating of the valve body.
- Push button flow setter illuminates when max flow is achieved providing visual feedback to operators.
- Industry standard flow orifice option regulates flow setpoint regardless of DP changes.
Also now available is the PICCV with the KRB24-3 actuator which offers a floating point control and is an economical solution for smaller spaces without compromising functionality or efficiency. If features a fine tooth gear wheel to field set required flow.
The PICCV with the KR offers simple flow customize feature and when factory furnished with a flow orifice users have an independent device to validate flow. Once the flow is set, the PICCV takes over precisely controlling flow and eliminating coil overflow providing system efficiencies and energy savings.
- Factory default flow setting is equal to the maximum GPM rating of the valve body.
- Quick field set balancing with tab locking mechanism when coil flow is less than factory default setting.
- Position indicator provides visual feedback of flow to operators.
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Belimo offers a compact motorized valve solution for HVAC applications such as unit ventilators, fan coil units, chilled ceilings or beams and room or zone solutions. The Pressure Independent Characterized Control Valve (PICCV) with a KR actuator offers an economical solution for smaller spaces without compromising functionality or efficiency.Ultra-Flat Compact Actuator
The multi-patented, rugged KR actuator offers 18 in-lbs (2 Nm) and is designed for motorizing open-close applications to ensure optimal valve design and absolutely reproducible control quality. The actuator features a simple, manually adjustable angle of rotation limiting device with a flow rate scale. Available on PICCV, this new actuator offers a compact solution where space is limited.
The PICCV has characterized control ball valve technology which provides an equal-percentage characteristic curve, better control and is self-cleaning eliminating blockage offering longer life and superior flow control than other short stroke solutions. The pressure independent valve directly controls water flow required by the coil and is not affected by pressure fluctuations in the system. By precisely controlling the flow, the pressure independent valve eliminates the need for a balancing valve, thus reducing the installation and balancing cost. The largest benefit for the owner is energy savings by eliminating overflow through the coil. KR actuators with the PICCV offer a compact simple field adjustable solution.
KR on PICCV small and rugged and perfect for a wide range of applications featuring:
- Tabs allow for quick unlocking and secure locking of flow limiting mechanism.
- Fine tooth gear wheel flow limiting mechanism enables quick commissioning and adjustment.
- Simple flow scale provides quick and accurate adjustments.
- Visual position indicator enables quick confi rmation of flow.
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It’s a fact. Efficient operation of variable flow systems cannot occur without effective flow balancing and control. Pressure fluctuations, system instability, and even minor design flaws will rob owners of efficiency throughout the life of the system.
There is a better way. Pressure independent technology helps owners maximize the energy savings of variable flow pumping systems while addressing their unique control challenges.
Pressure independent technology has tamed costly flow control issues in thousands of installations throughout the world. Pressure independent valves directly control the water flow required by the coil and are not affected by pressure fluctuations in the system. The valves are selected based on the GPM requirements of the coil and no Cv calculations are needed. By precisely controlling the flow, the pressure independent valves eliminate the need for balancing valves, thus reducing the installation and balancing cost. By far, the biggest benefit for the owner comes in the form of energy savings by eliminating overflow thru the coil. Overflow wastes energy by over pumping and is the main cause of the low ΔT syndrome in chilled water systems.
Pressure independent control stabilizes control of variable flow systems for a lifetime of efficiency and worry-free, automatic balancing. Everyone agrees that variable flow pumping systems have the potential to save facilities thousands of dollars in pumping energy. But all too often these savings quickly disappear due to complex flow issues. With pressure independent control technology only a single valve is required to maintain proper flow through each circuit. At Belimo the valve arrives from the factory pre-set for each circuit, so there is no additional balancing required. The system performs perfectly from start-up. And if a facility adds new circuits as a result of expansion, the flow control of existing circuits remains intact – so no rebalancing is required.
Pressure independent valves can be used to regulate flow through air handlers, heating and cooling coils, fan coil units, unit ventilators and VAV re-heat coils.
The Belimo Pressure Independent Characterized Control Valve (PICCV) combines a differential pressure regulator with a 2-way control valve to supply a specific flow for each degree of ball opening – regardless of system pressure fluctuations. The valve performs the function of a balancing valve and control valve in one unit. Therefore, the flow characteristic and operation of the valve is not distorted in the system.
How It Works
As flow passes through the valve, a uniquely designed pressure regulator moves according to the change in pressure above and below it. The regulator assembly adjusts to the differential pressure increasing and decreasing the orifi ce so the differential pressure across the ball stays constant. The valve maintains a constant exiting fl ow despite any and all changes in system activity, including changes in demand, system redesign, and virtually any occurrence that results in pressure variation.
Like the PICCV, the Electronic Pressure Independent Valve (ePIV) maintains consistent flow despite changes in system pressure. Available in sizes 2 ½ to 6” it is suited for larger piping systems than the PICCV can accommodate.
The ePIV directly measures flow by combining a magnetic flow meter and a 2-way control valve. The actuator has a powerful algorithm that modulates the control valve to maintain the exact flow based on the control signal set by the DDC Controller. The flow reading is reported back to the controller using a standard signal, and this value can be used by the Building Automation System to perform advanced control and energy strategies.
Learn more at www.piccv.com or www.energyvalve.com
Recently released a new white paper by Gregor P. Henze the Department of Civil, Environmental and Architectural Engineering of the University of Colorado Boulder located in Boulder, Colorado along with Walter Henry from the Massachusetts Institute of Technology located in Cambridge, MA and Marc Thuillard of Belimo Automation AG located in Hinwil, Switzerland.
Improving Campus Chilled Water Systems with Intelligent Control Valves: A Field Study. This white paper details a field study conducted on two university campuses in Massachusetts and Colorado during the cooling season of 2011. The purpose of this experimental study was to alleviate ΔΤ degradation problems on both campuses through the use of intelligent pressure-independent control valves, and to quantify the improvements achieved. The Massachusetts field results revealed that the intelligent control valves when coupled with a ΔΤ management strategy have allowed the campus to serve additional cooling load on its campus with the same distribution and central plant system.
Download Now – This white paper and learn how the Belimo Energy Valve improved the campus chilled water systems.
Comparing the Characterized Control Valve (CCV) to the Globe Valves is like comparing oranges to bananas. Not only does the CCV have a ball-type valve that gives you and equal percentage flow characteristic and unprecedented control stability.
For control stability, a valve must provide an equal percentage characteristic that produces a linear variation in thermal output according to the amount the valve is opened.
Globe valves have been the standard control valves in HVAC applications for many years because they deliver an acceptable flow characteristic. They are, however, relatively costly.
The problem with traditional ball valves in control applications has always been that, while they were very economical and reliable, they had an inherently poor flow characteristic with an extremely high flow coefficient.
The CCV solves this problem and combines a superior flow characteristic with the reliability and economy of a ball type valve. The secret is the patented characterize disc that provides an equal percentage characteristic superior to globe valves of similar size. The combination of the precision shaped aperture in the disc and the specially designed hole in the ball provides slow, precise flow control as the valve is opened. The result is improved part-load behavior, better stability control, and optimized energy use.
All of CCV come equipped with specially developed rotary actuators that provide the necessary precision for modulating, floating point, and on/off control.
Controlled by Multi-Function Technology (MFT), the actuator is electronically adapted to the precise opening and closing points so that the full 2-1 0 V control resolution is used. This is accomplished with no-effect on the high close-off pressure.
The stop point can also be set to allow a custom Cv rating to fit any application.
The marriage of CCV and MFT offers a range of valuable features that surpass those of globe valves and do so at a very affordable price.
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- Provide an equal-percentage valve characteristic.
- Permit no sudden change in inlet flow upon opening (unlike a globe valve).
- Offer excellent stability of control.
- Provide Cv values comparable to those of globe valves.
- Achieve higher close-off ratings than standard globe valves.
- Pipe as mixing or diverting on three-way valves.