Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site amdcad.UUCP Path: utzoo!utcs!lsuc!pesnta!amdcad!mike From: mike@amdcad.UUCP (Mike Parker) Newsgroups: net.consumers Subject: Re: Info on hot water heater gizmo? Message-ID: <661@amdcad.UUCP> Date: Wed, 13-Feb-85 15:34:23 EST Article-I.D.: amdcad.661 Posted: Wed Feb 13 15:34:23 1985 Date-Received: Wed, 13-Feb-85 22:43:33 EST References: <775@ut-sally.UUCP> <611@amdcad.UUCP> <259@oliveb.UUCP> Distribution: net Organization: AMDCAD, Sunnyvale, CA Lines: 25 > > There is a solution for showers though. It is an shower control that > automaticaly adjusts the temperature. Some codes require this type of > shower valve on all new installations. The idea is to prevent the > person in the shower getting scalded when someone else flushes the toilet. > The valve has a bimetal control built into it that will regulate the mix > of hot and cold water to keep the same temperature. Should work for a > tank-less heater. > > Jerry Aguirre @ Olivetti ATC > {hplabs|fortune|idi|ihnp4|tolerant|allegra|tymix}!oliveb!jerry Be careful buying these. There such controls available that have a bimetal control to take into account variationa in the water temp. However, the vast majority of constant temperature shower controls rely on the fact that "flushing the toilet" lowers the pressure in the cold water pipes more than in the hot. They rely on little spring loaded gizmos to adjust. This will not solve the positive feedback problem of tankless water heaters. I do not know if there is a sure fire way to tell if you are getting bimetal or springs in one of these units, anybody on the net try to buy one lately? Mike @ AMDCAD