243 West State Road 176 | Island Lake, IL 60042 800-355-7061

News

In celebration of our 20th-year in business, we are offering our MILJOCO thermometers and gauges at the prices from when Mechanical Equipment first started! Yes, we are significantly rolling back the prices on these essential products.

For the month of June, you can buy these MILJOCO ISO 9001 certified items at roll-back prices:

 

  • Standard MILJOCO 9” Thermometer with 3.5” stem, model SX935 for $25.00or $29.00 with a standard neck brass well, model W35B.
  • Standard MILJOCO 9” Thermometer, with 6” stem, model SX960 for $30.00or $40.00 with a standard neck brass well, model W60B.
  • Standard MILJOCO stainless steel, 4.5” Contractor pressure gauge, model P4598L, for $14.00 or $21.00 with needle valve and snubber.These are also UL certified per NSF/ANSI Standard 61 and 372 to be safe in potable and drinking water.

You can combine orders for even bigger savings, and even order extra to hold as inventory to increase your savings.

There’s no limit on quantities at these prices, we’ll even discount further on orders of 200 units or more. (Any combination of thermometers and gauges that equal 200 units or more – not including wells or accessories).

 

Customization Available

Some of our customers pre-order every year and have us include their company logo and phone number on the face of the pressure gauges. There’s an additional cost added to these prices for that, but why finish a project and leave the service calls up for grabs? With your name and contact info on the face of the gauge, odds are that they’ll call you when they need service. Call us for details on customization options.

Remember, this offer is only good through June 30, 2019, so review your current project list and take advantage of this great offer!

PSST: If you’re wondering if these prices are an honest-to-goodness real deal, check this link out, we’re even cheaper than Walmart!

 Give us a call at 800-355-7061 with any questions on this Anniversary offer.

Patterson-Kelley will begin shipping their new MACH® condensing boiler with 10:1 Mechanical Turndown starting March 29th, 2019.

MACH® Models C750, C900, C1050

Providing high turndown without sacrificing efficiency or reliability.

Patterson-Kelley continues to push the limits of technology by increasing turndown, with emphasis on system efficiency, reliability, and serviceability. By using a mechanical method to achieve higher turndown, they have eliminated the need to add excess air. Adding excess air can reduce the dewpoint of the flue gas and adversely affect efficiency.

MACH® with 10:1 Mechanical Turndown Capability Benefits:

  • Flexibility to match input to building load
  • Better control over temperature differential between return water and exhaust temperature
  • Perfect for new installation and retrofit projects
  • Simple boiler maintenance
  • Available for natural gas application

The MACH® condensing boiler is now available with 10:1 mechanical turndown capabilities for natural gas models C750, C900, and C1050; perfect for a variety of applications.

If you are interested in including this boiler in your next project bid or reaching out to your existing customers to upgrade their equipment, give us a call for specs, pricing, and delivery dates.

You can also download a MACH® with 10:1 Mechanical Turndown Bundle today to grab literature, spec sheets, submittals, and more and start planning your next upgrade or new installation project today.

This is some interesting information provided by Taco, concerning the VRF industry’s efficiency negotiations at the DOE:

The VRF industry has started another round of efficiency negotiations at the Department of Energy (DOE). Fireworks erupted during the October 15-16 meeting when PG&E presented two reports (links below) from the California Investor Owned Utilities (CA IOUs) claiming that the VRF manufacturers have been publishing unrepresentative equipment ratings that hurt their ability to cost-effectively serve their customers!

They then went on to present two analyses they conducted which evaluated system ratings and published performance data versus field data they collected and laboratory measurements they undertook through the Applied Technology Services (ATS) lab in San Ramon. They also performed sensitivity analysis on the IEER metric. The key take-a-way was that in both test the measured cooling IEER of the systems was approximately 50% that of the published IEER of the equipment. Stated another way, the published IEER’s are approximately 2X the measured IEER’s. This data corroborates what we have been seeing in the field, had documented at the ASHRAE headquarters building in Atlanta, Georgia, and have been touting at VRFrejected.org.

The testing and rating standards noted at the DOE working group meetings are governed by AHRI, Standard 1230. This standard is also currently under review and open for public comment. On November 19, the Hydronic Industry Alliance-Commercial (HIA-C) submitted comments in regards to the performance rating of VRF equipment [LINK]. Key areas of concern addressed the shortcomings of the standard as it is based on a residential unitary DX standard, which is not suitable for commercial application, highlighted by the testing being based on a maximum of 25 feet of piping, something rarely found in the field. The submitted comments also addressed the importance of accurate comparisons of operating efficiency in the heating mode, recommending that refrigerant piping length correction factors for Heating Capacity, COP, and HSPF must be developed along with adequately addressing what speed the compressor is to be tested at in heating mode.

PG&E VRF DOE Test Report 1

PG&E VRF DOE Test Report 2

Give us a call if you have any questions on this.

One of our most trusted brands, Patterson-Kelley, provided us with this great explanation breaking down turndown in commercial boilers.

Boilers are rated on thermal efficiency, which is simply the chemical energy added to the boiler, divided by the energy added to the boiler water. As more energy is transferred from the hot gas into the boiler water, the thermal efficiency increases and the temperature of the hot gas decreases. Turndown ratio plays a key role in this energy transfer. Many engineers and owners have been intentionally mislead regarding turn-down ratio’s and this article will dispense with the misleading information and down right nonsense about turn-down ratios and efficiencies!

Almost all boilers are tuned to add excess air, which ensures ideal combustion of the fuel for proper air-fuel mixing. The excess air can also prevent the burner from overheating by “pushing” the combustion flames off the burner.

When energy from the hot gasses is transferred to the boiler water, the gas temperature dips below the dew point, which causes vapor to become liquid. The energy released from the conversion is picked up by the boiler water and results in a significant boost in efficiency.  Every pound of condensate from flue gases condensing adds approximately 1000 btu’s to the boiler water. However, dry flue losses and loss of vapor can result in energy loss.

Energy loss can be readily calculated if the amount of CO2 and O2 in the flue gas and the stack temperature is known.

 With the evolution of boiler technology, manufacturers have found a way to offer units with multiple firing rates, and units that can modulate seamlessly between fixed low fire rates and fixed high fire rates. The fixed fire rates are defined as the boiler turndown capacities, and modulation is accomplished by reducing the air and gas flow into the boiler.

The benefit of this modulation is threefold; it reduces cycle losses, it reduces the wear on the components, and it can potentially lead to higher thermal efficiencies.

Impact of Turndown

This begs the fundamental question – wouldn’t a boiler with extreme turndowns be much more efficient than one with 5:1 turndown?  The answer to that is ‘NO’! And the proof of that is a simple engineering calculation that anyone can verify for themselves (shown below).

To achieve high turndowns the boilers are tuned to deliver greater amounts of excess air at low firing rates to keep the burner from overheating. The additional excess air will significantly reduce the dew point of the water in the flue gas and alter the losses in the dry gas.  To illustrate this effect, the example used in Figure A is updated to reflect a 20:1 turn down where the O2 is set to 11% (corresponding to a CO2 of 5.6% and 97% excess air).  The results are highlighted in Figure B below.

Note that the dew point has been lowered from 130.6° F to 117° F  and the boiler is no longer in the condensing range.  This represents a 3.7% DECREASE in overall efficiency and this is just the beginning of the bad news! 

When excess air well above 50% is used in the boiler, it impacts the stability of the combustion flame which can lead to excessive flame failures, nuisance trips and cycle losses.

The P-K Analysis

Realistic boiler modulation rates have helped improve the overall boiler system efficiency from reduced cycle losses and increased thermal effi­ciencies. Extreme turndown produces the opposite effect. Boil­er plant designs must factor in actual (not extrap­olated) boiler efficiencies through the firing range of the equipment and matching the expected plant loads with the right boiler size selections.

Interested in learning more? Reach out to us at sales@buymeinc.com

Going to be at the 2019 AHR Expo?

Dave Connors, Patterson-Kelley’s Trainer and National Accounts Manager will be giving an exclusive presentation at the 2019 AHR Expo. Be part of his “The Dirty Little Secret Associated with High Turndown” presentation to get a new perspective on the controversial topic.

Join Dave Connors on Wednesday, January 16th between 1:45 PM and 2:05 PM at Theater A – Room C101 of the Georgia World Congress Center. 

One of our most popular product lines, Taco, is a member of the Hydronic Industry Alliance – Commercial which is a non-profit alliance of hydronic equipment manufacturers and partners operating in North America. The alliance operates under the principle that water is the most efficient and greenest energy transfer medium on the planet, and they serve as a resource within the HVAC and Service Water Heating industry. Their mission is to educate, integrate, and communicate the advantages of Hydronic System Solutions.

As part of that mission, they have launched a new campaign targeting rejecting VRF systems. In an ongoing effort to expose building owners, architects and design teams to the multitude of issues that can arise by choosing to install VRF systems, the Hydronic Industry Alliance has created a website, supported by an advertising campaign in popular industry publications and websites, which highlights the major concerns and presents first-hand experiences of those brave enough to come forward to speak about their poor VRF experiences.

The VRF industry is spending millions of dollars advertising the falsely-claimed superior energy efficiency of their systems. They are changing the business model of how systems get designed and are trying to change codes and safety protocols to allow for even greater amounts of refrigerants to be piped throughout a building.

The Hydronic Industry Alliance wants the design community to think twice before blindly choosing a VRF system over the many other viable HVAC options, like hydronics, that will almost always better meet the design, budget, safety, comfort and performance goals of the building. The hydronics industry deserves a seat at the design table, before an HVAC system type is chosen, to tell why water always wins – for everyone.

In the coming months, we will see additional information, support materials and case studies coming out of the Hydronic Industry Alliance in regards to VRF systems, the benefits of hydronics, and new design tools to make it even easier to choose the right HVAC systems. As we get this information, we will pass it along to you. In the meantime, make sure to visit www.VRFrejected.org to learn the truth about safety, energy costs, efficiency, and the proprietary nature of VRF systems.

While we support our customers with any of their needs, we encourage you to look at alternatives to traditional VFR systems when designing and building your next hydronic system. If you have any questions on this, please give us a call to discuss at 800-355-7061.

Don’t wait for it to get cold! Mechanical Equipment is offering a limited time 20% discount on our Patterson-Kelley Boiler Annual Maintenance Kits (part #BP-0000-0345). This special offer will be applied to maintenance kits orders starting July 10, 2018 through September 30, 2018.

As we approach the fall maintenance season, the importance of annual maintenance will help ensure optimal performance of your Patterson-Kelley Boilers and frankly, all of your equipment. Annual maintenance work provides your company with additional service revenue, gives you an opportunity to get in front of your customers again, and keeps them happy with superior service.

Orders of 15 or less maintenance kits will usually ship within 5-7 days. For orders, greater than 15, please call us to get the estimated ship date.

To order or learn more about our Patterson-Kelley Annual Maintenance Kits, just contact our office at 800-355-7061.

Nexus Valve just released this video which demonstrates the installation process for the NexPress crimp piping connection system engineered for hydronic HVAC systems. It’s a little over a minute long but we think you’ll find the information valuable.

Let us know if you have any additional questions on installation or on the NexPress crimp piping connection system in general. We’re happy to answer any questions. You can reach us at 800-355-7061.

Nexus Valve has announced the addition of the HLA UltraFlex™ hose NexLok union adapter. This hose adapter can handle 250 psi of water pressure and temperatures of 32 – 200 degrees.

Made of solid brass, these adapters provide superior connectivity between Nexus UltraFlex female swivel hose ends and NPT pipe fittings or copper tubing. The UltraFlex hose end, where the hose adapters can be threaded in, has swivel fitting with NPSH (straight pipe) threads and gasket.

All threaded ends (including NPT) have faces that are machined true and flat for maximum sealing performance against gaskets.

Available in 1/2″, 3/4″, and 1″ sizes.

Call us for more information or learn more here. 

The Department of Energy (DOE) has made some changes that affect commercial and industrial pump systems. To stay up to date and compliant, you might be interested in registering for this free webinar. Taco, one of our most popular manufacturers, is hosting “DOE Commercial Pump Regulations and Labeling” on Oct. 25th at 1 p.m. CST.

Did you know that 25% of currently available pumps will not be saleable as of January 27, 2020 due to new energy efficiency levels being implemented by the DOE. This webinar will cover the scope of pumps affected by the new Commercial & Industrial Pump rules, the new rating system, test methods and performance requirements. It will also explore the industry’s efforts to implement a new Energy Rating labeling program, which is similar in look-and-feel to the Energy Star appliance labels and can easily be used by utility incentive programs to incentivize the purchase of high-efficiency pumps.

Learning Objectives:

  • Understand the scope of products covered under the DOE rulemaking
  • Pump Energy Index (PEI) is the new DOE metric – what it means and how it’s applied
  • Learn the compliance timelines
  • See what the new pump label looks like and how it will help affect purchases of higher efficiency equipment

Register Here

Nexus Valve has launched a new product, the Flamco Pressure Step Deaerator (PSD) and we’ve got it for you.

A new and innovative tool, the unit utilizes vacuum technology to deaerate entrained air in hot or chilled water hydronics systems.

The compact design allows the PSD to be installed in almost any mechanical situation. The PSD is an efficient low-power consumption unit requiring only 110v and 3 amps to run, and is easy to program through simple LED readout controls.

Key Features

  • Password protection for parameter entry
  • Pressure settings in 1 PSI increments
  • Service reminder option (12 months)
  • Pump exercising option (2 second pulse if inactive for 60 days)
  • Event logging for pump start, pump run hours counter, electrical
  • Interruption and common alarm
  • Auxilary contacts for common fault
  • Pump fault, pressure transducer
  • Vacuum deaerating, turbo and normal interval modes
  • Pump inlet strainer and pump check valve
  • Glycol mixture up to 50%
  • Vacuum cylinder
  • Adjustable diff erential
  • MODBUS and RS485 connectivity
  • Will deaerate system volumes up to 39,625 gallons
  • Two year warranty

If you are interested in learning more about this product, download the brochure or give us a call at 800-355-7061. We’re happy to answer any of your questions or help design a system for your client.