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Posted by joe brix on October 05, 2005 at 21:50:11:
In Reply to: Re: should we upgrade to a modulating boiler? posted by Dave on October 05, 2005 at 10:14:07:
Dave:
Checkout the bottom of the Efficency+ sales brochure
http://www.lochinvar.com/pdf/EBN.pdf
the tekmar's are the blue boxes over the 2 boilers.