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Weil-McLain EGH ratings lowered
I just wanted to call everyone's attention to the fact that the EGH series atmospheric boiler by Weil-McLain has had all of the ratings lowered. For example, the EGH-85 used to fire at 349,000 BTU and now if fires at 315,000 BTU. There has also been the addition of baffle plates that slide in between the sections. It appears that the combination of adding the baffle plates and lowering the firing rate by roughly 10% results in a higher efficiency. It no doubt will result in a longer life for these boilers too.
Of note is the fact that the old numbers are still on the "Specifications tab" on the first link for the EGH boiler. However, the new correct numbers are in both the Sales Brochure and the Installation Manual.
I called WM technical service to point out that they have conflicting information on their website. It is supposed to be corrected soon.
Dave in Quad Cities, America
Weil-McLain 680 with Riello 2-stage burner, December 2012. Firing rate=375MBH Low, 690MBH Hi.
System = Early Dunham 2-pipe Vacuo-Vapor (inlet and outlet both at bottom of radiators) Traps are Dunham #2 rebuilt w. Barnes-Jones Cage Units, Dunham-Bush 1E, Mepco 1E, and Armstrong TS-2. All valves haveTunstall orifices sized at 8 oz.
Current connected load EDR= 1,259 sq ft, Original system EDR = 2,100 sq ft Vaporstat, 13 oz cutout, 4 oz cutin - Temp. control Tekmar 279.http://grandviewdavenport.com