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Why Economizing Makes Sense


Energy usage typically represents a significant portion of a company’s total operating costs, and in a day and age when sustainability and efficiency are at the forefront of industrial design, the demand for innovative products and methodologies that can cut energy expenditures is becoming increasingly prominent.

Economizing provides a wide range of energy-related benefits and with a number of recent technological advances in the design of economizers over the past few years, they are becoming one of the fastest growing ways to achieve reliable savings.

Airside economizers, in particular, aren’t just one of the most effective ways to reduce operating costs; they’re a requirement in many commercial HVAC systems throughout the United States. They also fulfill another important Indoor Air Quality (IAQ) requirement by providing the correct ratio of outside air to return air.

Until recently, most economizing solutions left a great deal of room for error. Many studies showed that while some economizers frequently experienced a wide range of mechanical issues, others simply didn’t have the capability of delivering the level of energy savings that they claimed to provide. Also, because of their complexity, many economizers presented installation complications; further reducing their ability to effectively cut energy costs.

This, however, is quickly changing as many economizers can now be customized to handle HVAC applications in specific geographical regions. Instead of offering an all-in-one solution, these products now take into account the natural climate of the location that they are being utilized in.

One of these products is Belimo’s ZIP Economizer and unlike other models that take a great deal of time and effort to setup, it can be programmed in less than a minute. Equipped with all relevant climate zone and energy code data already built in, the ZIP economizer requires only the entry of a zip code. After that, a building’s HVAC operations are automatically optimized and energy savings can be maximized with minimal interaction from the user. In addition, through use of various state and federal rebate programs, many utility providers will pay the cost of installing an economizer, which further increases their feasibility. Other benefits associated with Belimo’s ZIP Economizer can been viewed online.

For more information on Belimo’s ZIP Economizer or any more of their products, you can visit their website at or call them toll free at 1-800-543-9038.

How to Save Energy with Economizing


Airside economizing has become one of the quickest and most efficient routes to reliable energy savings and improved indoor air quality. In addition to reduced power costs resulting from increased HVAC system efficiency, owners and operators that utilize airside economizers often have the opportunity to further increase savings by taking advantage of a number of federal, state and local energy rebates and incentives. Belimo ZIP Economizer

In this 30 minute recorded webinar, you will learn how to get efficiency strategies back on track with easy setup, automatic code change over temperatures, and superior troubleshooting capability. You will understand how you can instantly know when failures occur and how to quickly pinpoint and address any problems.

Click on this this link to listen to the recorded webinar along with session on questions and answers.

Video on Advanced Valve Control Strategies


In this 30 minute video, you will learn the ways that the Belimo Energy Valve's features Flow Control and Power Control can produce more stable control.  Discover the hydronic advantages of Flow Control, which makes the valve pressure independent and the system dynamically balanced.  Then learn about Power Control, which allows the valve and the coil to function as a single device which is pressure and temperature independent.

Belimo's ZIP Economizer was Chosen as Money-Saving Product


BUILDINGS magazine has selected the ZIP Economizer as a 2014 Money-Saving Product winner. Belimo is part of an elite group of 97 products showcased in the magazine’s June 2014 issue.

Finalists were evaluated by the BUILDINGS editorial staff for the money-saving qualities theyZIP Economizer offer to building owners and facility managers in areas such as energy consumption, water savings, lighting, envelope improvement, and maintenance.

To view the full list of 2014 winners, visit Buildings magazine or look in the June issue of Buildings magazine.

BUILDINGS magazine serves over 74,000 commercial building owners and facilities management professionals in North America. The monthly publication helps readers make smarter decisions relevant to the management, modernization, and operation of their facilities. 

Learn more about the ZIP Economizer.

Energy Valve Proves Air Coils are Batting a Thousand


When sports fans crave game highlights or need to check the latest stats and ranking for their favorite teams, they turn to this large sports entertainment complex. This cable channel has been providing sports news and programming for more than 30 years. What started as one cable channel three decades ago is now a multimedia giant, with several sports channels televised in more than 200 countries.

In July 2013, Belimo turned to this large sports entertainment complex when it needed to check some important stats, but these numbers had nothing to do with RBI’s or yards passing. The manufacturer brought its Belimo Energy Valves to see how they would perform on a 700 acre campus.

The sprawling campus is home to several buildings with sophisticated HVAC mechanical systems. The buildings, which house the offices, radio stations, and broadcast studios, served as the perfect location to install the Belimo Energy Valve. The Energy Valve is a complete package including characterized control valve, BTU meter, and intelligent actuator with patented Delta T Manager™, on-board data storage and network integration capabilities. The Energy Valve package is easily installed and the sensor data used for the Energy Valve process logic can be also used for data acquisition purposes. The data can be used live, or stored in the actuator for later use. The data can be used to provide important and meaningful insights into the operation of a hydronic system. The Energy Valves rich data array and storage capability complements and unburdens the typical DDC system. What Belimo was able to find was a home run for their flagship valve product. 

Keeping Score 

According to this sports entertainment complex, its 18 building main campus is the company’s “mother ship,” employing close to 4,000 people. It’s the job of these employees to keep this 24/7 sports channel running. The buildings on campus are also an important factor. They need the most efficient and reliable mechanical systems in order for the show to go on. That is why Belimo chose this facility to install its Energy Valves. “We thought this facility would be a great site to show the strength of the Energy Valve in multiple ways,” said Ayotunde Williams, Manager of Product Management (water products) for Belimo.

The goal of the project was to employ the Energy Valves at a building on campus and record the valve’s numerous data points. Those readings would later be compared to a similar building with no relation to the campus suspected of having a less than efficient mechanical system. “Belimo wants to show the strength of the communication you can get with the Energy Valve,” said Williams.

“The information transfer via BACnet and the points of data can be used to understand how well the system is performing. Overall, we can end up using the data to even predict how much money a system like this would use in operation.”

So what is the Belimo Energy Valve and what is it capable of recording? The valve is a two-way pressure independent control valve capable of monitoring a variety of data points, including Delta T. Low Delta T can be a major culprit when it comes to system inefficiencies. It puts a strain on HVAC systems and could cause cooling costs to skyrocket. If air-handling are oversized, demand too much water, or foul and degrade with age, low Delta T can occur. When cooling coils are not working up to their potential, the DDC requests more chilled water but the extra water has limited or no cooling effect. This negatively impacts the chiller. In some cases, buildings must install additional chillers to keep up with the water demand. The Belimo Energy Valve can monitor Delta T and maintain a predefined Delta T setpoint which ensures only the necessary amount of chilled water through the system.

The Energy Valve includes temperature sensors to monitor supply and return water for energy 
management. The valve can also document coil performance and prove that it is working to design specifications. A static IP address can be assigned to the valve, giving building operators the ability to log onto the internet with TCP/IP communication and see exactly how 
the valve and system is performing. The IP address can also be assigned to a DDC network with BACnet MS/TP or BACnet IP communication. A technician can check system parameters and make changes to flow rates by simply connecting to the valve with a PC. Tablet devices can also be used to check valve readings while in the field.

“One of the strengths of this valve is that it enables transparency of the heat exchange process – we can see how the cooling load is behaving,” said Williams. “It not only gives you the numbers, but allows you to analyze this data and to understand what these values mean and what has affected these values.”

The Game Plan Automated Building Systems Inc. (ABS), a Belimo Platinum Distributor for many years, was responsible for the installation. The building automation company operates three locations in Glastonbury, CT; Southborough, MA; and Braintree, RI. It has been providing service to southern New England for the past 25 years, and has a roster of high-profile customers, including the headquarters of this large sports complex. ABS was tapped by Belimo to install the Energy Valves, which would be used to record numerous points of data, including water temperature, water flow, and thermal power.

Bill Dauphinee, Project Manager at ABS, coordinated and contracted the individuals responsible for the installation at building no. 4. The building chosen for the project houses broadcasting studios and office spaces. It also shares the heating and cooling capabilities of a chiller plant with two other nearby structures. This chiller plant operates three chillers and has several mechanical redundancies. 

At the top of this main building are two penthouses storing air handlers and controlsBelimoEnergyValve resized 600 equipment. Two Energy Valves were installed in each of the penthouses so that four cooling air handling units were equipped with Energy Valves. This was done in order to impact enough of the capacity and to show the difference in the overall system. It would also help to understand the different effects of the chiller water temperature and cooling.

A total of four Energy Valves replaced older valves, which are now recording flow, temperature, power, energy, and position of the valve. Flow meters were added to measure the overall flow going into the buildings. The installation team also added meters to measure the actual current usage of the three chillers and added CFM meters to measure the velocity of air flowing across the specific air handlers. All of this was done to get the complete overview of what the Energy Valve was doing. Data from the controller was then used to validate that the Energy Valve was providing good comfort and useful data.

Continue to read the entire case study - download now.

New Valve Retrofit Linkage Offers Easy Installation with No Downtime


Belimo releases a larger universal retrofit linkage solution offering quick and easy installation without interruption in service. The new Flanged Globe Valve Linkage (FGVL) will allow users toRetrofit Valve Linkage Solution for Large Globe Valves retrofit their existing 2.5” to 6” globe valves and restore their systems quickly.  The retrofit linkages utilizes the EV, RV and AVK series actuators with forces (up to 1011 lbf) which provides the close offs needed for large globe valves. The linkage boasts a rugged steel and aluminum clamp design with selectable fail-safe position switch on the actuators making installation easy. The FGVL retrofit linkage can adjusts to fit most flanged globe valves regardless of make and model increasing its flexibility with reduced inventory.

“With the success of FGVL’s little bother the UGVL (Universal Globe Valve Linkage) which fits a broad range of ½” to 2” globe valves this seemed to be the next logical step, says Joseph Carcare Product Manager of Belimo’s Retrofit Solutions. This will pave the way to let people Retrofit globe valves ranging from ½” to 6” with just two linkages choices.”

Complete offering is avialable online at For a quick reference download the product brochure.

ZIP Economizer is Certified by the California Energy Commission


The California Energy Commission's energy efficiency standards have saved Californians more than $74 billion since 1977. The savings were calculated bydetermining the energy savings associated with a more efficient building standard. Savings accumulate over time as older equipment is replaced with newer, more efficient models and older buildings replaced with new construction. 

The ZIP Economizer is now certified under the Fault Detection & Diagnostics requirements of the California Energy Commission and exceeded the requirements for air-side economizers.  Detailed test report shows the level of compliance as well the Fault Detection & Diagnostic documentation is available online or you can contact your local Belimo District Sales Manager.

The California Energy Commission Certification Number BZE1245 for the ECON-ZIP-BASE is listed on the CEC website.

Learn more about the ZIP Economizer at or

Economizing: Understand the Codes and Rebates to Maximize Savings


In recent years, airside economizing has become one of the quickest and most efficient routes to reliable energy savings and improved indoor air quality. In addition to reduced power costs resulting from increased HVAC system efficiency, owners and operators that utilize airside economizers often have the opportunity to further increase savings by taking advantage of a number of federal, state and local energy rebates and incentives.

Because most rebate programs vary from state to state (and even county to county and utility provider to utility provider in some cases), it’s important to understand not only how to identify which programs are applicable to your facility, but also how the structure of the rebate and/or incentive can be used to maximize energy savings.

For instance, some rebate programs pay a portion of the cost to install an airside economizer. In these cases, rebates can either come in the form of a fixed-price sum or a percentage of the total installation cost incurred by the owner. Additional programs offer a monetary amount based on each unit of power saved (kwh), while others provide benefits based on the weight of the equipment being installed (e.g., $200 per ton).

In addition to rebate programs, understanding the energy codes and regulations set forth by state and federal regulatory agencies has also played a key role in maximizing energy savings at commercial facilities. This, however, has become a thing of the past with development of Belimo’s ZIP Economizer. Unlike conventional airside economizers, the ZIP Economizer has all relevant climate zone and energy code data already built in, so all users have to do is simply enter their ZIP code and the controller does the rest.

To further help owners and operators get the most out of their economizing operation, BelimoBelimo Rebate Incentives has also developed a highly convenient search tool powered by the Database of State Incentives for Renewable Energy (DSIRE), which provides users with quick and easy access to thousands of different rebate programs and incentives associated with energy management tools like economizers. All you have to do is select your state, enter your ZIP code and the search tool does the rest; providing you with a list of all applicable rebates for your specific region. A link to the search tool can be found at

For more information on Belimo visit online or call toll free at 1-800-543-9038.


Belimo Releases New Energy Valve


Belimo Americas in Danbury, Connecticut, the leading producer of actuators and valves in the HVAC industry, extends its Energy Valve range and now offers ½” to 2", the complete range offering is now ½” to 6"valve sizes. The Belimo Energy Valve is a two-way pressure independent control valve that optimizes, documents and proves water coil performance. Using its Delta T Manager™ the Energy Valve solves low Delta T syndrome by monitoring the differential temperature across the coil and adjusting the flow to maintain design delta T set-point keeping the heat transfer of the coil optimized while maintaining comfort.Belimo Energy Valve

The Energy Valve also has a Power Control mode that allows you to set your power output to a specific value creating a linear control relationship and making a coil/valve characteristic irrelevant. The precision and accuracy of the Energy Valve is based on its (Ultrasonic ½”- 2” / Magnetic 2½”-6”) BTU meter. With its 13 months of stored data the Energy Valve can show live and historic data from coil characteristics to the DDC control signal. The system transparency the Energy Valve creates can also be accessed via BACnet or analog signal. These features contribute to LEED points.

The Energy Valve is designed for building owners that want to continuously control and monitor energy usage, and develop energy savings strategies through their BAS. The product range now consists of ½” to 6” valve body sizes.

Avoid Common Errors When Installing Butterfly Valves


Some of the most common and troublesome installation errors are avoided by proper pre-installation, identification, inspection and alignment of all the parts involved.

1. Inspect the valve to be certain the waterway is free from dirt and foreign matter. Be certain the adjoining pipeline is free from any foreign material that could damage the seat and disc sealing surfaces.

2. Actuator should be mounted on the valve prior to installation to facilitate proper alignment of the disc in the valve seat.

3. Check the valve identification tag for materials, and operating pressure to be sure they are correct for the application.

4. Check the flange bolts or studs for proper size, threading, and length.

WARNING! Personal injury or property damage may result if the valve is installed where service conditions could exceed the valve ratings.

Position the connecting pipe flanges in the line to insure proper alignment prior to valve installation. Spread the pipe flanges apart enough to allow the valve body to be located between the flanges without actually contacting the flange surfaces (See Figure 1).  Exercise particular care in handling the valve so as to prevent possible damage to the disc or seat faces.

1. For Lug style valves:

  • Place the valve between the flanges.
  • Install all bolts between the valve and the mating flanges. Hand tighten bolts as necessary.

2. Before completing the tightening of any bolts, the valve should be centered between the flanges and then carefully opened and closed to insure free, unobstructed disc movement (see Figure 2).

3. Using the sequence shown in Figure 3, tighten the flange bolts evenly to assure uniform compression.

4. Cycle the valve to the fully open position, then back to the fully closed position, checking the actuator travel stop settings for proper disc alignment. The valve should be operated to assure that no binding is taking place.

5. The valve is now ready for operation.

Remember: Install the valve with the disc in the “ALMOST CLOSED” position. Do not use any flange gaskets.

Butterfly Valve Installation 1Butterfly Valve Chart 1

 Butterfly Valve Chart 3

Butterfly Valve Chart 4

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