gas tankless water heaters

32 The Contractor s Choice Bosch Thermotechnology Issue 2 - March Fall 2013 2012 Greentherm. gas tankless water heaters New active bypass for superior temperature stability let water lter featuri easy external access standard on all models A magazine dedicated to the professionals who install boilers, DHW tanks, tankless water heaters, solar and geothermal systems from Bosch and Buderus. Inside this issue Welcome 3 System Before & After 4 Commercial Case Study 6 In Their Own Words 10 Featured Installation 14 Product Updates 16 Solution Spotlight 20 Tech Talk 22 Meet the Team 28 Training 30 New venting options! Concentric up and out for single units and two to four unit single pipe cascades ntroducing oscro water eater mobile app for siing and technical documentation Greentherm, with an improved nergy actor to, active bypass for superior temperature control, and innovative venting, is your best value for gas condensing water heaters! 15 YEAR WARRANTY Low NOx Indoor Comfort Systems Boilers, Geothermal, Tankless, Solar

2 The Contractor s Choice Issue 2 - March 2013 31 New! SM CDi SERIES Easy to service UP TO 32.0 EER Tin plated evaporator coil Air leakage rate of cabinet is less than 2% Closed cell (fiber-free) insulation Quiet operation as low as 52 dba Improves indoor air quality Introducing Greensource Geothermal Heat Pumps Part Load UP TO 22.0 EER Full Load Bosch sales & marketing tools designed to help you grow your business. BoschWayToGrow.com online program is designed to be the most dynamic and innovative Installer program in the industry. It offers powerful business tools, lead generation and incentive rewards. It s free for Bosch Thermotechnology professional anytime, and from anywhere - www.boschwaytogrow.com BoschWayToGrow Single point of product registration for star ranking, warranties, loyalty points, promotions and more. Loyalty Points are awarded when you register any Buderus or Bosch Themotechnology product. Can be redeemed for gear and gift cards. Installer Locator on our website is populated with BoschWayToGrow participating contractors. Database of all your registered products Access to on-line training and registration for on-site training. Positive feedback from consumers is posted to the installer locater on our websites Be connected to what s going on at Bosch Thermotechnology. Includes products, training opportunities & promotions 9 The iconic brand you and your customers know and trust is proud to introduce one of the best new products on the market! Manufactured with unmatched quality and craftsmanship here in the USA and backed by a limited 10-year parts and labor warranty, the Bosch Greensource geothermal heat pump was specically designed to improe the ease of serice, sound quality, aesthetics and energy efciency To learn more isit BoschGeo.com 2013 CDi Series: SM Model Consumer Financing Offer something your Thermotechnology products (boilers, tankless, solar, geothermal, heat pump water heaters) Approval for credit scores as low as 640 Terms up to 10 years Receive immediate payment upon completion of work Easy loan process and fast approval, generally within hours Minimal paperwork for you. AFC First Energy Loans deals directly with the homeowner Low monthly payments

30 The Contractor s Choice Issue 2 - March 2013 3 Training courses Londonderry, NH Class schedule for March 2013. Course Description Welcome to Contractors Choice. Buderus G125BE Buderus GB142 Buderus GB162 Bosch Greenstar Boiler the technical requirements for installation, maintenance and trouble shooting for the G125BE series boiler. March 4, 2013 Trainer: Chuck Shaw 8:30-4:30 March 18, 2013 Trainer: Tom Bowen 8:30-4:30 boilers on the market. This hands-on course covers all technical requirements for installation, maintenance and trouble shooting for the GB142 series boilers. March 5, 2013 Trainer: Chuck Shaw 8:30-4:30 March 20, 2013 Trainer: Tom Bowen 8:30-4:30 The GB162 is the most versatile condensing boiler in the industry. This boiler can be wall or rack mounted, used in cascades up to 16 boilers and is available in two sizes 290 & 330 MBH. This one-day seminar will focus on the GB162 product, its installation, applications, and cascade systems. The GB142 class is a recommend prerequisite. March 5, 2013 Trainer: Chuck Shaw 8:30-4:30 in both a heating only and a combi version. This hands-on course covers all technical requirements for installation, maintenance, product application and trouble shooting. March 19, 2013 Trainer: Tom Bowen 8:30-4:30 Mark Avron National Sales Manager Boilers, Tankless, Solar Lyndal Moore National Sales Manager Geothermal We re pleased to bring you the second edition of Contractor s Choice. Our goal is to provide relevant, up-to-date application and technical information enabling you to do your job even better. In this edition we highlight several new products, product updates and customer installations. Environmental stewardship is a core philosophy that inspires and drives Bosch global product development. In this issue we are introduction product lines with the Green condensing boilers and combi boilers, the Greentherm gas condensing tankless water heaters with Energy Factor to 0.94 and the Greensource geothermal heat pump with up to 32.0 EER (part load) and 22.0 EER (full load). Let us know what we re doing well, and where we can improve. Your comments are welcome send your thoughts to allison.szklarz@us.bosch.com. Have a successful installation? Let us write about it! Controls clients. Learn how using our controls can improve the comfort level and March 21, 2013 Trainer: Tom Bowen 8:30-4:30 Be sure to check back often to see what training classes we are offering. For dates, locations and to register visit No investment in promoting your business pays off as much as a successful installation and a satised customer f you can provide some details and images about a recent installation project, we ll create an article or case study which may be published on our website or in a future edition of CC or an approved story you ll receive a Bosch PS-10 power tool! Contact craiglainsyusboschcom

4 The Contractor s Choice Issue 2 - March 2013 29 Bosch Make-Overs Before & After Egeland residence, Ossian, IA Submitted by Jordan Corrinne Jabczanka Covers the states of ME, NH and VT for Buderus products. Also serves and the FW Webb liaison and processing of their orders for a both Bosch and Buderus Corrinne.Jabczanka@us.bosch.com Mark Karlosky Bosch wholesale, retail, and Buderus wholesale product information, order entry, and phone inquiries. mark.karlosky@us.bosch.com Situation: The homeowners approached Vick s Heating, Plumbing & Ventilating, Inc. about heating and cooling a planned home. The homeowners wanted a heating and cooling system in the new addition to integrate with preferred radiant heat throughout the home Solution: Vick s Heating, with the assistance of Gordy Peterson at K&E Distributing, Inc., designed a 9-zone Warmboard installation controlled by Rehau thermostats motor and 10KW emergency heat was installed a Bosch TW 6 ton 2-stage water to water ground-source heat pump to replace furnace. Also installed was a 50 gallon insulated storage tank maintained by the Bosch geo working in 1st or 2nd stage depending on demand. Cortney Lyons is Cortney. In addition to reception Cortney handles and Bosch Retail products. cortney.lyons@us.bosch.com Angel Miller Buderus Bosch Residential & Commercial Support, Canada Liaison, Customer Support. angel.miller@us.bosch.com Pilar Montilla BOSCH & Buderus Support for all products Solar Thermal systems. East country Area MA, NY,PA,MI,NJ, OH, VA pilar.montilla@us.bosch.com Chad Smith Buderus/ Bosch Greenstar customer service for East Coast: CT, RI Mountain: CO, ID, MT WY, UT, AZ, NM chad.smith1@us.bosch.com

28 The Contractor s Choice Issue 2 - March 2013 5 Team Spotlight Londonderry Sales Order Processing John Coffey Customer Service Manager Located in Londonderry NH, John manages the customer service teams in both the Londonderry and Ft. Lauderdale locations. john.coffey@us.bosch.com TW Series Features (Geo 6000 WA/WW ) 2 Stage compressor Ultimate performance Low cost operation Environmentally friendly R410-A refrigerant Quiet operation Available in 2 through 6 tons ertical, cow, horiontal split congurations Geothermal ready Heather Dixon Customer support associate handling day to day Bosch retail, wholesale & EDI orders as well as any inquiries coming in via email or by phone. Kathy Donovan Warranty Workbench orders for Technical Departments and Employee purchases. During cooling season the tank contains chilled water which is supplied to the Hi-Velocity air handler. For added comfort in included in the system as well as HRV for a healthy home. The homeowners now enjoy temperature control throughout the home while reducing energy costs. kathy.donovan@us.bosch.com Eric Golden Handles all Bosch Wholesale and Retail lines along with the Buderus product line. Responsible for EDI transmissions and answering website inquiries. He also performs Data Security tasks for Customer Service and is a Emergency Response readiness team member. eric.golden@us.bosch.com Contractor: James B Grinna, President Steve Klemme, Comfort Specialist ic s eating, Plumbing entilating, nc 1 State wy ecorah, A 2101 www.vicksheating.com

6 The Contractor s Choice Issue 2 - March 2013 27 Commercial Case Study Available to Professional Contractor s Only SB Condensing Boilers Commercial Case Study Submitted by Jake Carr, Green Technology Associates Inc. Eligible Products Offer valid November 1, 2012 - April 30, 2013 When the owners of the proposed Russia Wharf project in Boston began, they knew they wanted to create a world-class high-rise with state-of-the-art sustainable technologies and advanced building techniques. Today, the re-named Atlantic Wharf project is an iconic Fort Point Channel on Boston Harbor, with adjacent Russia Residential Building with 65 residential units and a LEED Platinum Platinum is the highest rating given by the U.S. Green Building Council s LEED program, which provides independent, third-party areas of human and environmental health: sustainable site development, water Atlantic Wharf Mixed-Use Complex Condensing Boilers at 121.8 BHP each and two Buderus G615/10 Cast Iron Boilers We have conducted several tours for trade groups this past year and almost everyone comments that they can see we designed our building with sustainability in mind and identify the Buderus boilers as proof, said Dean Larson, Director of Engineering for Boston Properties. $500 Cash-Back $250 Cash-Back Bosch Tankless Therm Models Greenstar Condensing COMBI & Heat only Boilers $750 Cash-Back Bosch TA Model Geothermal Heat pumps $300 Cash-Back Buderus Conventional Boilers: G115, G125BE, G215, GC124, GA124, G124X, G234X $500 Cash-Back Buderus Condensing Boilers GB142 & GB162 $100 Cash-Back DHW storage tanks or 2107 Logamatic Control

26 The Contractor s Choice Issue 2 - March 2013 7 Is it time to update your heating system? Make The Contractor s Choice your choice. Is your home in need of an updated heating system? Have you been thinking about switching to a tankless water heater? Bosch Thermotechnology is pleased to offer, in addition to our personal use discount, a cash-back offer when you install select Bosch Thermotechnology products in your own home. This is a limited offer, so don t delay. You recommend Bosch and Buderus HVAC products, now it is time to enjoy the eligibility requirements and restrictions. The following are some of the eligibility requirements Offer limited to one installation per contractor. Offer applies to contractors who install the eligible products in the United States or Canada. The product must be installed in your primary residential address (proof of address ownership is required). The normal warranty provided with the purchased product applies. All products must be installed in accordance with the manufacturer s installation instructions and local and state code and regulations. The application form must be fully completed and signed by you, the contractor. Your local Area Sales Manager will visit your property to verify your application when the installation is completed. Payment of authorized applications will be made by Bosch Thermotechnology Corp. You are responsible to regarding product rebates. Installation may be used for photography, advertisement or PR purposes. For complete details and submission for ask your Bosch Thermotechnology area sales manager. According to Jim Magarian, P.E., Partner and Vice President at TMP Consulting Engineers, the load, leaving the conventional cast iron hot water loop at 15 degrees F and lower the heating season. Benets and Conclusion A hybrid combination heating plant allows upfront cost savings by installing supplemental lower-cost cast iron boilers. Larson, of Boston In addition to helping achieve LEED Platinum continue throughout the life of Atlantic Wharf. The name Buderus is synonymous with high management and facilities professionals recognize that, said Larson. I certainly would recommend these boilers for any commercial building hot water application. Project: Boston, MA Application: Commercial Hybrid Boiler System Equipment: Buderus Commercial Boilers condensing boilers 2 G 615 Cast Iron Thermostream boilers Building Owner: Boston Properties Architect: Childs Bertman secares nc General Contractor: John Moriarty Associates Design Engineer: TMP Consulting Engineers Mechanical Contractor: amel McAlister Manufacturer s Representative: Green Technology Associates nc Project Completion: ebruary 2011 Environmental Benet: 1 Metric tons of CO2year or 66 acres of forest sequestered annually

8 The Contractor s Choice Issue 2 - March 2013 25 The best of both. New Buderus SB Series boilers by Bosch. When do I need to use primary/secondary piping with the Greenstar Boiler? ntroducing the Buderus SB line stainless steel commercial condensing boilers. Our newest commercial boiler is being introduced under the Bosch brand, but will maintain a strong identity with the Buderus name as the product category. The Buderus SB series high mass design is perfect for large applications, it can be used with multiple fuels and is available with inputs from 563 to 5,443 MBH. Bosch is a global innovator providing sustainable business partnerships based on trust, values and quality. Primary secondary piping is used when more than one zone of heating is being installed or when you are doing a single zone of radiant through a manifold. When is not needed. If an indirect water heater is used in conjunction with a space heating zone you should also use primary secondary piping. The reason for this is, in a multi zone the primary/secondary would put the boiler pump in series with zoning pumps. This could cause velocity noise and pipe erosion. If using zone valves, the post purge would cause the pump to dead head which would drastically reduce the life of the pump. For all piping and wiring diagrams please see the applications manual

24 The Contractor s Choice Issue 2 - March 2013 9 Bosch. Your Best Choice. TechTalk Boilers H7P Code on the Buderus GB142 pressure reading, that doesn t mean there is no pressure in the system. If the gauge shows a pressure different then what the screen shows, it could be a dirty pressure sensor, or a broken connection back to the UBA module. Try to clean the pressure sensor out, you can use our Technical Service Bulletin TBG-8 to clean the pressure sensor. Check the connection to the pressure sensor to ensure there is no rust on the female harness plug, and that the male pins are intact. If you still have issues, then you can replace the pressure sensor. Make up Air Make sure you do the math when sizing and installing any heating apparatus oil or gas if you are using inside air for combustion. The national code book references 50 cubic ft. of air. The Buderus SB Series condensing boilers by Bosch incorporate stainless steel turbulators to improve condensation rates and minimize individual thermal tube loading. Dual return and hydronic design opportunities. The Buderus SB Series also offers a full 10 year eature rich, all Buderus SB series boiler come stand with a burner mounting plate, Pressure/Temperature Gauge, burner tube packing material (K-Wool), a spare burner door sealing rope and a full swing burner door. Burner Options include progressive two-stage and modulation burners. Ask your sales rep for more information. Gas Input Model MBH Buderus SB625WS Condensing Boiler Gross Output MBH Shipping Weight Part Number SB625WS-160 563 544 1350 7738003030 SB625WS-220 788 762 1380 7738003031 SB625WS-20 1014 0 1760 7738003032 SB625WS-370 1314 1280 150 7738003033 SB625WS-480 168 1642 200 7738003034 SB625WS-640 2200 210 3300 7738003035 Buderus SB745WS Condensing Boiler SB745WS-800 3003 2738 4830 7738003036 SB745WS-1050 3754 3650 5400 7738003037 SB745WS-1300 462 4563 650 7738003038 SB745WS-1550 5443 523 750 773800303 Stainless steel burner tubes ull swing burner door for ease of access H *Limited warranty. * Refer to product warranty document for full details. Copies of original warranties in their entirety are available upon request. Please contact your area representative.

10 The Contractor s Choice Issue 2 - March 2013 23 ManufacturesRep In their own words Keystone Sales and Associates by John McKeown The start of Keystone Sales & Philadelphia marketplace. At the time it was known as EIA or Energy Industrial Associates. In 1993, the company was acquired by TES Total Energy Systems as it continued to grow in the industry. In 1996, Bob DellaSala joined TES as sales manager and the company continued to grow, doubling their sales On January 1st, 2006, Bob acquired TES and renamed the company to the current Keystone Sales & Associates. Bob is currently the president and CEO of Keystone Sales & Assoc. with the warehouse located in Gilbertsville, PA Warminster, PA. Our strength is a strong, knowledgeable staff that together has over 200 years industry. The staff consists of 12 outside salesmen that represent the Bosch and Buderus product lines in lower New York State, Eastern PA, New Jersey, Delaware, Maryland, and Virginia. Our strong ties in the Industry and relationships with Contractors, Oil Dealers, Plumbers, Mechanical Contractors, Engineers, and Distributors make us a leader in the Manufacturers Rep Industry. We also have 4 inside sales people that provide sales support and service for our entire customer base. Our staff, along with Keystone to service customers in a professional, timely manner. Keystone University Keystone University is our new 2000 sq. ft. State of the Art training facility in Gilbertsville, PA that comfortably style setting. With a speaker s podium, LCD projector and large screen, allow us to provide Preventing Damage from Freezing to a tankless water heater. 1 Do not install the appliance in an unconditioned space as it is likely that damage will occur as the ambient temperature drops down to freezing and the small amounts of water that remain inside the tankless water heater will components. 2 If your selected model of tankless water heater supports twin-piping or advise that you install the appliance in that manner as you will greatly reduce the chance of a negative-air freeze occurring. In locations of the Country that are installed in such a way. 3 Negative-air freeze If a tankless water heater is taking its combustion air from inside the property, then it is critical to ensure that adequate combustion air is available to it plus any other air-moving appliance too combustion air. When the boiler runs it will take whatever air it needs from the surrounding area and it could pull air down from the outside through the tankless it could cause the tankless unit to freeze and possibly rupture. 4 Damage caused by freezing is not a defect in the product itself or its manufacturing, and as such is not something that is covered under warranty. It is therefore critical to install the product in such a way that it will not be subjected to the conditions that can lead to it freezing and becoming damaged.

22 The Contractor s Choice Issue 2 - March 2013 11 TechTalk Tankless Technical Support for help regarding an electric tankless water heater Unless the issue is regarding a water leak it is highly likely that we will be guiding the caller through electrical testing. This makes it imperative that the caller is in possession of a working digital multimeter (and knows how to use it) and is trained in the skills required to work on live electricity safely. If our Technical Agents suspect that the ability of the caller is in question, in the interests of safety they will go no Electric mini storage tanks important maintenance. As with most storage tanks our Electric mini-tank products contain an internal anode rod that is designed to protect the tank from corrosion. As time goes by the anode rod will deplete and will require replacement in order to maintain the protection of the tank. We recommend inspecting the rod at least once per year and replacing it if it is degraded. Failure of the tank will not be covered under warranty if it is found that the anode rod maintenance has not been carried out, and it time of installation. complete, professional meetings and trainings for our customers. Keystone U also features on display, the Buderus line of cast iron gas and oil boilers, GB142 and GB162 condensing gas heaters, and a GB 62 TL2-200 cascade system for light commercial / commercial installation training. We also feature a Bosch Greenstar Combi 100 condensing boiler for space heating and domestic hot water, a Bosch C 1210 ES Tankless Water Heater, and a Bosch Electric Mini-Tank Water Heater. The Bosch units, along with the GB 162 Condensing Boiler are currently being providing space heating to Buderus panel rads throughout the building, as well as providing domestic hot water in us the ability to deliver hands on training. This allows our customers to proper piping and pumping, proper venting, set up and combustion analysis, and most of all, the ease of servicing the units. The GB162 TL2 cascade system gives us the ability to demonstrate how fast and easy a 666 MBH input gas boiler system can be installed, saving the contractor valuable install time and Goals training was on February 21st, as we Salesmen in attendance. Since then, we have trained over 250 additional people on Bosch and Buderus with contractors travelling from as far as Roanoke, VA to attend. Our goal for 2013 is to train 350 to 500 contractors, distributors, and engineers on Bosch and Buderus equipment. We are also planning on holding regional training meetings for many of our local OESP, AHRI, ASPEE, and PHCC associations, which we are members of.

12 The Contractor s Choice Issue 2 - March 2013 21 Panel Rads a comfortable solution ManufacturesRep Keystone Sales (cont) resulting in lower installation costs. With radiant heat output and consistent and uniform room Durable constructed of thin sheet metal, our temperatures, panel radiators provide a panel radiators are made from heavy gauge steel and use a powder coated Prestigious Jobs Zoning Flexibility Ease of Installation At Andrews Air Force Base in Maryland, we have over 60 condensing boilers and indirect water heaters installed. The majority of the boilers are tube boilers, with GB142 and GB162 boilers installed in some of the smaller water heaters. Four years ago, the base was presented with a prestigious energy boilers were a large part of. The Brooeld Acadey in Voorhees, NJ has two GB162 / TR3-300 systems became somewhat of an emergency install over Christmas break in 2010 due What s amazing is the contractor, Hutchinson Mechanical Services from Cherry Hill, NJ had installed a new 2 million BTU heating system, and had it up and running in just over 2 ½ working days. Delaware Valley College in Doylestown has recently installed a Bosch tankless cascade system in their newly renovated cafeteria. The system was designed to provide hot water throughout the building by cascading four C 1210 ESC models, with another C 1210 ESC unit prioritizing a commercial dishwasher. We have many successful installations throughout our territory with several testimonials that show fuel savings of we can take an apartment building and size it properly and closer to the actual load, provide multiple condensing boilers that cascade and utilize outdoor reset, then tie in our indirect water heaters for domestic hot water usage. 4 years or better. Using thermostatic radiator valves (TRVs), each radiator has its own temperature control. So rather than controlling zones or large areas of the home, each room can be controlled they work off of temperature only. Which means lower installation costs and lower operating costs. Less Wall Space Our standard panel radiators have btu That s 4 times the output of comes to furniture placement. A wide variety of piping options can be used including home-runs, one-pipe, radiators generally require 3/8 to ½ PEX tubing making installation easy and affordable. Applications Due to the high btu output, ease of radiators are commonly used in both New homes Hotels Apartments Additions Churches Garages Basements Schools residential and commercial applications including: heating application or simply want to provide your customer with a better radiators. For more information and design assistance for panel radiators, contact your local sales representative or visit out website at www.buderus.us

20 The Contractor s Choice Issue 2 - March 2013 13 Solution Spotlight Panel Radiators Why panel radiators by Mark Avron If you walked into a heating distributor in the U.S. and told them that you they d probably ask you questions like what size or what brand. Ask the same question at a heating distributor in Europe and the response would more likely be what are you talking about? form of hydronic heating for both residential and commercial applications is panel radiators. Over a look: More comfort With a combination of both radiant and convective heat, panel radiators don t just heat the air in the living space, they heat everything in the living space including furniture and people. Using non-electric thermostatic radiator valves water thru the radiator unlike zone valves or zone pumps that are simply on maintains more consistent output temperatures and helps reduce the temperature swings associated with on-off controlling. More efcient Due to the higher btu output, panel radiators can be operated at much lower water temperatures. Lower water temperature equals lower fuel consumption. The ability to operate at lower temperatures than conventional panel radiators ideal for condensing boiler applications. Using a modulating circulator and non-electric thermostatic radiator valves (TRV), panel radiator systems also consume far less electricity than convention baseboard systems. Cost effective panel radiators typically use smaller diameter piping (which means smaller Moving Forward With constant change in the industry, and the increased visibility with condensing technology, more and more contractors rely on education to keep them up to speed. Keystone Sales & Associates has made a value added investment for the future through training with the Keystone University. professional customer service, and strong ties to the industry keep us moving forward. Buderus Gas Floor-Standing Boilers Meet DOE 2012 Requirements As per DOE 2012 requirements, all boilers manufactured from September 2012 must be equipped with a load-dependent controller. Using this boiler runs at a lower temperature, and on a colder day with greater heat loss, a higher water temperature is generated. The Aquasmart controller analyzes the number of calls for heat from the thermostat to automatically adjust the water temperature up or down. It comes pre-programmed from the factory to HeatManager to align comfort and energy savings. Aquasmart and HeatManager are trademarks of R.W. Beckett Corporation. Energy Star is a trademark of the U.S. EPA and DOE.

14 The Contractor s Choice Issue 2 - March 2013 19 Greenstar Featured Installation Greenstar Combi Boilers Provide Comfort and Energy Efciency Submitted by Dan McDermott Innovative Funding Provides Affordable, Energy-Efcient Housing Options The Cape Cod Community Development Partnership (CDP), located in Eastham MA affordability and availability of safe, stable year round housing for local residents through development, ownership and management of 58 affordable rental units within eight towns on the Lower Cape. In 2011 the organization applied for and won a the Real Return Initiative through the TD Bank Charitable Foundation s Housing for Everyone competition. The unconventional part of the project is the CDP s use of solar panels installed on some of the housing units as a 10-year source of revenue with electricity generated by the solar panels then sold back to the area s utility supplier, NSTAR through Solar Renewable Energy projects in 10 of its rental buildings, such as adding insulation, upgrading heating and hot water systems, and installing energy- behalf of their residents. Bosch introduces the new Buderus SB Series of commercial condensing boilers In January Bosch introduced a new line of stainless steel commercial condensing with input ranges from 563 to 5443 MBH. This new boiler line is introduced under the Bosch brand, while maintaining its strong identity with the Buderus product category. The new Buderus high- and new construction projects. The boilers are tailored to fully meet This series can be used with multiple fuels including natural gas, propane or heating oil. Boiler insulation comes preinstalled and convenient top connections allow easy access to piping for reduced installation effort. Project costs are reduced warranty of 10 years, Bosch is the perfect partner to offer a broad spectrum of commercial boiler applications. Greenstar Combi Boilers Provide Comfort and Energy Efciency combi boilers were installed in multiple housing units in the towns of Harwich, remainder by propane.

18 The Contractor s Choice Issue 2 - March 2013 15 Product Updates Buderus introduces new single-coil tank platform B offering to include four single-coil indirect tanks the S32, SU54, SU80 and SU100. The S32 features top connections, making it a great choice for use with wall connectors for conventional connection to any boiler. gallons rather than liters. For instance, the old model S120, a 32-gallon tank, is being replaced by the S32. All new single coil tanks feature a neutral white cover design for corrosion protection and optimal service life. the S and SU versions are available at a very competitive price level, maintaining the Buderus warranty. Superior Design The Buderus S and SU tanks offer an eight-year full warranty with a limited lifetime warranty for the remainder of the tank life. All of these tanks have less restrictive water quality requirements than tank life, and the larger 80 and 100-gallon models have two magnesium anode rods with a large clean-out port for ease of service. Adjustable feet provide convenient level adjustment, and pre-installed rigid 2-inch thick foam insulation lowers standby heat loss. Mechanical work was done by PMG Mechanical Systems LLC of Sandwich, MA. President and owner Paul Gens remarked that Our challenge was doing all the installations in utility closets while the apartments were still occupied. The couple of units, the installations proceeded quickly. The condensing units vent with PVC pipe, and the internal pump in the Greenstar units provided the required Benets and Conclusion Chapman, Overall, we have been very pleased with the comfort level and energy savings from heat and hot water provided by the Bosch Greenstar combination boilers. Projected annual revenue from solar electrical production is as much as data collected show that one resident s natural gas bill has dropped an average of only affected our residents, but also the local economy -- over the course of the Real Return program our contractors from various trades have accrued over 3,000 hours of employment for over 40 workers. housing maintenance. Bosch Thermotechnology is pleased to have played a small part in its successful heating upgrades. Contractor: Paul Gens, President & Owner PMG Mechanical System LLC Sandwich, MA pmgmechanicalverionnet

16 The Contractor s Choice Issue 2 - March 2013 17 Product Updates Greentherm Introducing Greensource ew Active Bypass on Greenther C 950 and C 1050 Tankless Water Heaters A new active bypass increases temperature stability in Bosch Greentherm C 950 temperature in the water loop. Unlike competitive solutions which run the life. The new bypass is installed in Greentherm C 950 and C 1050 ES tankless water heaters which are Energy Star rated. New Accessory: Concentric Up and Out Venting Option installation with the Greentherm C 950 and C 1050 tankless water heaters. The concentric kit consists of a 90 elbow and a Up-and-out venting telescopically adjustable side wall termination. telescope 13-21" 5" DIA in one set of pipes through one penetration in the outside wall of a structure. ±80 Swivel exhaust tip Deliver Cost Savings ith igh fciency Green Technology The new Greensource CDi series heat pump. CDi series stands for Complete and most reliable units on the market. The new Greensource CDi series SM model heat pump comes in cooling capacities from 2 to 6 tons and is equipped with quality and innovative green technology to cool and heat a home economically and in an environmentally friendly manner. Features and Benets for the oeowner Quiet - Advanced sound package for whisper-quiet operation as low as 52dBA Reliable backed by 10 year limited warranty on parts and labor Geothermal heat pumps are designed and built in Bosch s ISO 9001 and ISO 14001 energy products in a residential comfort control system. CDi series SM model heat Quality (IAQ) accessories and thermostats to suit customers comfort control Bosch geothermal heat pumps and to provide a higher level of comfort with the control and delivery of fresh, clean air. See www.bosch-climate.us for details