We have a SDHW client that wants to replace his old water heater with a new tankless water heater. We do a SDHW system about once a year, and only for clients that are getting a PV system from us to begin with. So this is not a big business line for us and we are behind the curve in terms of understanding the latest technologies.
As I remember from an excellent workshop that I took about four years ago: when used in conjunction with a SDWH system, the tankless heater should (1) Modulate heat input based on INPUT water temperature (2) Be able to modulate down to ZERO BTU/hr The only unit I knew of back then was the Bosch 125BS (I believe). Today I can't find any bigger units that fit the above requirements. Short of using two Bosch 125BS units in parallel, does anyone have a solution? - Peter Peter T. Parrish, Ph.D., President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 CA Lic. 854779, NABCEP Cert. 031806-26 peter.parr...@calsolareng.com Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
