Reviewing the 2015 solar & hydronics code

 

In response to a growing interest in residential and commercial solar energy systems, IAPMO first developed and published the Uniform Solar Energy Code in 1976. Just like the 2009 and 2012 editions of this code, the 2015 Uniform Solar Energy and Hydronics code (USEHC) was developed using IAPMO’s American National Standards Institute (ANSI)-accredited open consensus process, and is unique in that it is both a Code and an American National Standard.

The 2015 USEHC is developed to govern the installation and inspection of solar, hydronic, and geothermal energy systems as a means of promoting the public’s health, safety and welfare. Published previously as the Uniform Solar Energy Code, the 2015 edition adds significant provisions concerning hydronic and geothermal systems (see sidebar, below).

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This comprehensive, consensus IAPMO/ANSI Code provides a single source reference for the installation, use or maintenance of radiant, hydronic, geothermal and solar systems. It can have a significant positive impact by leading to the increased utilization of these high efficiency and renewable energy systems. It also raises the bar for the industry, much of which has been unregulated for many years. Uniformity will be a significant benefit, as will the opportunity for fewer callbacks on problem installations and satisfied consumers. No other model code published today specifically addresses the design and installation of solar, geothermal, hydronic and radiant heating and cooling systems.

“This new code provides a single, comprehensive standard for hydronic heating and cooling systems. It will improve the clarity and consistency of hydronic systems design and operation to everyone in the industry,” said Mark Hudoba, director, Heating and Cooling, Uponor.

“Having minimum standards assures that consumers get a solid-performing hydronic heating or cooling system,” said Hudoba.

Who benefits from widespread acceptance and adoption of the USEHC?

  • Contractors — The provisions of the USEHC help eliminate confusion and controversy on the part of Authorities Having Jurisdiction (AHJs) by establishing consensus guidelines for the application of radiant and hydronic technologies in the built environment.
  • Manufacturers, Engineers, Architects and Contractors — Have pertinent design and installation topics, previously addressed in multiple codes or regulations, now available in a single ANSI consensus standard. (Note that some aspects of system installation may need to comply with mechanical or other codes applicable in the local jurisdiction).
  • End Users — Understanding that the sharing of knowledge that the USEHC has been developed by subject matter experts in accordance with vetted system design criteria and accepted construction techniques.

RPA Setting the Bar High

The overall goal of the Radiant Professionals Alliance (RPA) has always been one of raising the bar for professionals, while instilling confidence in the consumer and government that properly designed, installed and maintained hydronic systems will and can provide the highest degree of comfort and efficiency.

The RPA is committed to contributing professionalism to the entire hydronics/radiant industry and promoting such systems as the most viable path to energy savings and comfort for the end user. Many provisions of the 2015 USEHC concerning radiant heating and cooling applications have not appeared in model codes before; RPA’s involvement in the development of relevant language ensures that state-of-the-art design and construction principles are considered.

It has taken years of diligent effort by RPA and the collective best minds in the industry. When the decision was made to create a Hydronics Code, RPA was successful in creating a code committee representing all facets of the industry: manufacturers, suppliers/distributors, contractors, installers, and government officials/inspectors. The RPA Code Committee spent more than a year compiling relevant information, even from foreign countries, and molding it into a working document.

“We find ourselves on the brink of bringing this whole program to fruition. We are getting prepared to help our members of this industry to move forward, and put hydronics into the wheelhouse of every consumer, architect and engineer in North America, and it is critical that we have to include the installation and design entities as a part of our program. The RPA always has been, and will continue to be, about education. Not just contractors education, but education of the end users, as well as the design teams involved in putting these buildings together, and the people in the field enforcing these codes,” said Mark Eatherton, executive director, RPA, which is in the process of developing educational curriculum that will explain the many nuances of the code, and provide drawings and explanations for purposes of interpretation. These classes will be offered to RPA and IAPMO members at a discount over non-members. A formal announcement will be made once these classes come online.

Although RPA did offer voluntary guidelines in the past, there was very little information available to the industry or the consumer in a meaningful, useable format regarding design criteria and best practices. Much of the content of the RPA guidelines was in more of a “should” configuration, as opposed to mandatory code required language, using words like “shall.”

When the possibility arose that the RPA Code document could become part of an American National Standard, the document was submitted into the process, a balanced ANSI Committee was created, and the document was further refined over an additional three years, with experts from every facet of the industry contributing countless hours, worth literally millions of dollars, to the effort.

Having an accredited American National Standard brings the ultimate credibility to the USEHC.

Local Enforcement

A code is only as good is the enforcement in the field. The RPA has begun teaching and working with the code enforcement officials in itx efforts to bring their knowledge base of these mechanical systems up to speed so that they are much more comfortable performing their job in the field.

Some people believe that the code will dictate exactly how they must install their system. This is not correct. The code establishes a minimum standard, and in most cases where the contractors have been receiving training, guidance and direction from competent manufacturers, they are already installing systems that exceed the minimum standards. It is those jobs that are being performed by unqualified, untrained personnel that will be required to change their ways. Our bottom line goal is to increase the consumers’ confidence about the safety, reliability, efficiency and comfort associated with the proper design and installation of these wonderful systems and make the installing contractors job of meeting the AHJ’s requirements quicker, smoother and easier.

The availability of this code means that in jurisdictions where it is adopted, a single source for many provisions affecting the installation of these systems will be available to contractors and AHJs.

“I expect two primary impacts on AHJ’s. First, many AHJ’s will look to familiarize themselves with the code in an effort to improve their ability to inspect and approve systems. Code information and training opportunities for AHJs can be found on the IAPMO website: http://www.iapmo.org. An electronic version of the code can be viewed at http://epubs.iapmo.org/USEHC/.  Second, the code will make it easier for AHJs to enforce the code due to the consistency of proper system design and installation,” says Hudoba.

It will provide residential and commercial consumers the assurances and protections of a viable, quality installation in an understandable format. Inspectors and AHJs receive the guidance and protections of a model code developed in a consensus process from the industry. “The clarity and consistency that the code provides will reduce the number of improperly designed and ill-performing systems that are installed, thereby enhancing the overall professionalism of the hydronics trade,” said Hudoba.

Designers and contractors should know that subject matter experts specializing in each of the technologies addressed in the USEHC invested significant personal time in the development of the code in an effort to include accurate and complete provisions.

The code will provide experienced installation contractors with verification that what was taught to them by competent manufacturers and the RPA are good recommendations to follow, and that their work will exceed the codes minimum requirements.

“As a former working mechanical contractor, I can speak from personal experience that the only way we typically find out that the code has changed is when we violate the code and find ourselves on the wrong side of the enforcement official. That is a very expensive, non-productive method of learning, but one that you won’t soon forget. We are trying to educate our members in advance so that when their jurisdiction adopts these codes that they will not be caught flat footed,” said Eatherton.

The Federal Fingers

There have been rumblings from within the industry about government overreach and about contractors who are worried about the government’s involvement in building a hydronic code. Yet, it isn’t the government developing the code, it is the industry that is responsible for helping to develop the codes. “It is the government that will be enforcing the code, and any code is only as good as the AHJ who is enforcing the code. We have already started training the AHJ’s, and this will only make the good contractors job easier. The inspectors will now have the ability to know what is right, and what is wrong, and the right ways of performing these jobs,” said Eatherton.

A contractor who has received good and regular training from a recognized, competent manufacturer is most probably not going to have to make any major changes in their operations. They are already in compliance with the provisions of the code. It is the unlicensed people who are out there doing all of the wrong things that end up giving our industry a black eye that will be the focus of this code, not the well trained, experienced contractors.

As a code/standard development organization, IAPMO is constantly looking for more involvement from our industry members, regardless of where they fall in the food chain. Everyone from the consumer all the way up to the manufacturer, and every entity in between has open access to the process, and we invite their participation in the development of these open consensus codes and standards.

Manufacturing members must be included as a part and parcel of this whole process. Many of the manufacturers have helped in populating the many different technical committees involved in the development of the applicable codes. “We will be leaning heavily upon our manufacturer members in all aspects of the deployment of this code and the associated education and certification standards that were developed in conjunction with the code. We intend to certify our manufacturers facilities, as well as their instructive personnel to bring the whole program together. We’ve already begun negotiations with numerous manufacturer members, and they are in full support of our efforts,” said Eatherto

Additional Standards

To increase customer awareness and confidence, ASSE International is developing a Hydronic System Installer and Hydronic System Designer National Standard and certification program. It is our intent that the Authority Having Jurisdiction will recognize this certification and require it as minimum criteria to allow contractors and designers to perform work in their jurisdiction. This program is expected to be released in 2016.

The RPA is developing an Instructive Training Manual, and a Best Practices Manual. These two items will be used going forward to ensure that we have provided the contractors and designers with the tools necessary to ensure proper and appropriate applications of these mechanical systems. It will take the designers and installers through the steps necessary to ensure that the delivery method correlates with the energy source. Using staple up tubing with a ground source heat pump has its limitations, and we must make certain that everyone with skin in the game understands the limitations and appropriate application of these and all hydronic heating and cooling systems.

The RPA has been heavily involved in the development of the ASSE/IAPMO/ANSI Series 19000: Hydronic Systems Professional Qualifications Standard. This Standard is a program to certify expert hydronic heating and cooling systems designers and or installers, as well as solar thermal installers. This is a very stringent program, requiring proof of active field service as well as approved course materials before the applicant will be allowed to sit for the test. Our hope is that the AHJ’s around the country will recognize this program for the value that it brings to the industry, and we hope that it will become a minimum requirement for people who are applying for licenses to do hydronic and solar thermal work in their jurisdiction. This will have some mandatory educational provision that the RPA already has available to the public thorough our educational partner, HeatSpring. These courses can be previewed at https://www.heatspring.com/partners/radiant-professionals-alliance.

SIDEBAR
Solar & Hydronics Code Provisions

Key provisions of the 2015 USEHC and changes from the 2012 edition include:

  • New hydronics chapter provides:

– radiant heating and cooling

– snow melt systems

– minimum requirements for the capacity of heat sources

– heating appliances and equipment

– piping, joints and connections

– system controls

– space heating

– steam systems

– auxiliary systems

– installation, testing and inspection of hydronic systems

  • New condensates waste and control provisions for condensate-producing equipment and appliances
  • New alternative engineering design provisions
  • New provisions for accessibility, attic and underfloor installation, and roof installation of appliances and equipment used in solar energy, hydronic, and geothermal energy systems
  • New solar thermal provisions, such as materials, solar collectors, freeze and overheat protection, drainback and thermosiphon systems, and pressure testing
  • New geothermal energy systems chapter provides minimum requirements for groundwater systems, ground-heat exchanger design, heat exchangers, heat pumps, distribution design, and the installation of geothermal energy systems
  • New duct systems chapter provides minimum requirements for ducts used for conveying air for heating and cooling of spaces
  • New electrical provisions for the installation of solar photovoltaic systems based on NFPA 70-2014

 

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Must Own: Lessons Learned Servicing Boilers by Ray Wohlfarth

Ray Wohlfarth, international author of Lessons Learned in a Boiler Room and Lessons Learned: Connecting New Boilers to Old Pipes, has a new book on the service of hydronic and low pressure steam boilers, entitled, Lessons Learned Servicing Boilers. The book is filled with almost 300 pages of tips, rules of thumbs, formulas, and jobsite … Continue reading Must Own: Lessons Learned Servicing Boilers by Ray Wohlfarth

Product Review: Viessmann Vitocrossal (CU3) boiler

Jim Godbout Plumbing & Heating, Inc. is a very diversified company offering comfort and efficiency using geothermal systems, solar thermal sstems by and plumbing, piping and HVAC systems. Godbout provides service for the entire coastline of Maine from York to Freeport. Including: Biddeford, Saco, Kennebunk, Kennebunkport, Portland, South Portland and everywhere in between. The Hub … Continue reading Product Review: Viessmann Vitocrossal (CU3) boiler

WaterFurnace introduces HydroLogic, a simple solution for radiant heating

WaterFurnace International, Inc. introduces HydroLogic, a turnkey solution for radiant heating that integrates seamlessly into a WaterFurnace geothermal system. It is a cost-effective product that takes the complexity and time out of radiant system installations. The main component of HydroLogic is a pre-piped, pre-wired modular mechanical panel designed to simplify installation. The panel supports cooling, … Continue reading WaterFurnace introduces HydroLogic, a simple solution for radiant heating

Boiler primer: Bosch Thermotechnology Corp.

Bosch Thermotechnology is a leading source of high quality cooling and heating systems, including tankless, point-of-use and electric water heaters, floor-standing and wall-hung boilers, Bosch and FHP geothermal heat pump systems as well as controls and accessories for every product line. Bosch Thermotechnology is committed to reinventing energy efficiency by offering smart products that work … Continue reading Boiler primer: Bosch Thermotechnology Corp.

‘Caleffi Excellence’ grand prize winner announced

The year-long contest — Caleffi Excellence — which is a platform where designers and installers of hydronic or plumbing systems can showcase their work and receive national recognition, has culminated in the announcement of the grand prize winner. Bill Olschewski of Tip Top Plumbing (Manitoba, Canada) and a guest of his choice has won a … Continue reading ‘Caleffi Excellence’ grand prize winner announced

tekmar snow & ice melting app & online design tool

tekmar unveiled its new app and online tool to assist users in designing their own snow & ice melting solutions. Contractors, engineers, and distributors can use the app and online tool to enter their design parameters and instantly receive the specific information they need to specify the correct control solution, prepare a quote, and successfully … Continue reading tekmar snow & ice melting app & online design tool

Coffee with Caleffi: Boiler Component Selection

December Webinar Completes Component Selection Series In the webinar, Bob “Hot Rod” Rohr, training and education manager, completes a two-part boiler component selection series on Thursday, Dec. 17 at 12 noon CST concentrating on key components used in renewable energy hydronic systems. Please visit www.caleffi.com for registration details. The complimentary educational series, Coffee with Caleffi™, … Continue reading Coffee with Caleffi: Boiler Component Selection

Advances in boiler construction and design

Contractors, architects, engineers and others who specify commercial and industrial boilers continually seek systems that are more cost-effective, energy efficient and environmentally-friendly. The boiler industry has responded by making significant advances in both construction and design, with new systems offering greater efficiencies, cutting-edge technologies, advanced controls and the ability to integrate with renewable energy. Condensing … Continue reading Advances in boiler construction and design

Lochinvar names first 2015-2016 VIP Contractors Program winners

Lochinvar has announced the first winners in its 2015-2016 VIP Contractor Program, which offers more prizes than ever before. From October through April, a total of four VIP Contractors are rewarded each month for their installations of Lochinvar’s residential boilers. Three of the monthly winners are selected among participants in the VIP Installation Showcase, an … Continue reading Lochinvar names first 2015-2016 VIP Contractors Program winners

Solar thermal/condensing boiler project addresses multiple loads, earns energy offset

  In Eagle County, Colorado, local authorities not only promote energy sustainability, but insist on it. Any residential project that incorporates more than 200 square feet of snow melt, for example, must mitigate the load with an offset the draws upon a renewable energy source. So the county required owner to mitigate snowmelt energy draw … Continue reading Solar thermal/condensing boiler project addresses multiple loads, earns energy offset

SlimFit™ High-Efficiency Condensing Boilers

With a number of innovations, Weil-McLain® now offers an enhanced line of its popular SlimFit™ high-efficiency condensing gas boilers. New features include improved boiler-to-boiler communication, Modbus® and BACnet® for linking with BAS (building automation systems), express set up wizard, 10 preset typical heating systems, and updated controls interface for simpler navigation, at-a-glance boiler status, diagnostics … Continue reading SlimFit™ High-Efficiency Condensing Boilers

Watts Radiant’s R-flex Pre-insulated PEX Piping System

Watts Radiant’s R-flex is a pre-insulated, flexible, energy-saving PEX piping system with a durable, waterproof outer cover. It provides cost-effective distribution for heating, cooling, and snow melting applications in schools, universities, resorts, housing developments, and other residential facilities. R-flex consists of a long-lasting PEX carrier pipe or pipes surrounded by thick insulation layers, all contained … Continue reading Watts Radiant’s R-flex Pre-insulated PEX Piping System

Boiler, tankless install solves homeowner’s hot water concerns

  Sunshine Plumbing Heating Air was recently recognized as one of the fastest growing private companies in Denver since 2012 with a 534% growth rate. Susan Frew, president and William Frew, vice president, are a husband and wife powerhouse ownership team whose company just won the 2015 ‘Fastest Growing Company’ award for the Denver Business … Continue reading Boiler, tankless install solves homeowner’s hot water concerns

Caleffi DISCALDIRTMAG magnetic separation

Caleffi expands its solutions to problems caused by ferrous oxide debris within hydronic systems. Ferrous oxide debris, which is abrasive and often microscopic, is created from the oxidation of iron or steel materials. It can deposit onto heat exchanger surfaces and accumulate in other components including circulators, causing reduced thermal efficiency and premature equipment wear. … Continue reading Caleffi DISCALDIRTMAG magnetic separation

Viega provides design and product transition assistance for PEX applications

•  New Make the Switch program helps customers keep PEX installation projects on schedule. Wichita — Viega offers technical experts to assist with system design and product selection for switching to Radel® R-based PEX products. Known as a leader in press technology and training for the commercial, residential and industrial plumbing, heating and cooling industries, … Continue reading Viega provides design and product transition assistance for PEX applications