CONTENTS MARCH 2011
COVER STORY
Dunbar Mechanical Stephen E. Dunbar, president and CEO of Dunbar Mechanical, discusses the contractor’s past since its founding in 1936, its eventful history and its future, which includes opportunities in alternative energy services and work in the field of sustainable energy.
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THE CORE OF ANY PROFESSIONAL BOILER INSTALLATION
The Hydrocore is a fully fabricated forged brass manifold designed specifi cally for hydraulic separation, pump isolation, and purging in near boiler piping or secondary circuit loop applications.
Guaranteed to save you time, space, and leak paths - Hydro-Core is the Only Way to Install a Boiler.
BOILER
NEAR-BOILER PIPING Floor Style Mod/Con Boiler w/
Hydro-Core Manifold (Flange Right)
MECHANICAL CONTRACTING
22 Morris Beschloss Mechanical contractors the backbone of industry.
24 Changing the guard at MCAA
Phc news interviews the outgoing and incoming presidents of the MCAA.
28 Contractor profile Q&A with Dunbar Mechanical CEO.
32 PVF Market Report
Prices hold steady or begin to rise in Q1 as commodity costs increase.
HYDRONICS 40 Dan Holohan
Peering into the maw of truly impressive boilers, then getting rid of them.
44 Retiring to geothermal
Geothermal system saves New Hampshire retirement community $$$.
SECONDARY CIRCUIT LOOP APPLICATION
Two Hydro-Core Manifolds (Flange Left) utilized in a Secondary Circuit Loop application
PLUMBING 50 Richard Ditoma FEATURES
• Precisely crafted closely spaced tees for hydraulic separation
• Webstone Isolator® w/ Rotating
Flange & Drain (Left or Right Sided Flange Orientations)
• Webstone Ball Drain™ • Union Connection w/
1⁄4" NPT Gauge Port (Plugged)
• Custom fabricated boiler- specifi c supply and return lines available
BENEFITS • Fewer Leak Paths • Eliminates 18 Connections • Saves Space and Labor
PATENTS PENDING
• Easily purge and descale the boiler
BUSINESS RESOURCES + TOOLS
56 Ellen Rohr
AHR Expo provides human connection and energy to upbeat event.
58 BIM on your horizon GUARANTEED FOR LIFE
F OR LEARN MORE:
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www.webstonevalves.com Tel: (800) 225-9529
Building Information Management is a powerful tool that unites architects and engineers.
Education solves main problem for contractors: knowing true cost of doing business.
52 Attractive washrooms
Old industrial-style washrooms don’t make it in an age of emphasizing customer satisfaction.
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