Re: [RE-wrenches] SWH - mixing valves

e guessing." Again, best wishes, Bill Loesch Solar 1 - Saint Louis Solar - Original Message - From: "Kelly Keilwitz, Whidbey Sun & Wind" To: "RE-wrenches" Sent: Thursday, May 20, 2010 11:12 AM Subject: Re: [RE-wrenches] SWH - mixing valves > Hi Bill,

Re: [RE-wrenches] SWH - mixing valves

ropane hot water heater/storage tank. -Original Message- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches- boun...@lists.re-wrenches.org] On Behalf Of Randy Brooks Sent: Wednesday, May 19, 2010 2:01 PM To: RE-wrenches Subject: Re: [RE-wrenches] SWH - mixing valves

Re: [RE-wrenches] SWH - mixing valves

r interest in getting a solution to this pesky problem. Bill Loesch Solar 1 - Saint Louis Solar - Original Message - From: "Kelly Keilwitz, Whidbey Sun & Wind" To: "RE Wrenches listserve" Sent: Wednesday, May 19, 2010 1:14 AM Subject: [RE-wrenches] SWH - mixi

Re: [RE-wrenches] SWH - mixing valves

Randy, These valves are the Honeywell Sparcomix AM series, which are certified for "anti-scald" (ASSE 1016 & 1017) The specs show that, for a hot supply range of 120˚ to 180˚, at a position #2, the mix temp should vary only from 116˚ to 122˚. The valve is definitely not working to spec, and

Re: [RE-wrenches] SWH - mixing valves

Doug, I HAVE had tank (SS) temps in excess of 180˚, but rarely. These valves are the Honeywell Sparcomix AM series. I don't see any temperature limitations listed in the specifications. -Kelly Kelly Keilwitz, P.E. Whidbey Sun & Wind Renewable Energy Systems ke...@whidbeysunwind.com 360-678-7

Re: [RE-wrenches] SWH - mixing valves

Loesch Solar 1 - Saint Louis Solar - Original Message - From: "Kelly Keilwitz, Whidbey Sun & Wind" To: "RE Wrenches listserve" Sent: Wednesday, May 19, 2010 1:14 AM Subject: [RE-wrenches] SWH - mixing valves Thermal wrenches, I'm having an ongoing is

Re: [RE-wrenches] SWH - mixing valves

;RE Wrenches listserve" Sent: Wednesday, May 19, 2010 1:14 AM Subject: [RE-wrenches] SWH - mixing valves > Thermal wrenches, > I'm having an ongoing issue with mixing valves in my own system not > keeping a steady mix domestic HW temperature as the tank temperature > varies

Re: [RE-wrenches] SWH - mixing valves

Kelly, Although I'm no plumber, I think there is a difference between "mixing valves" and "anti-scald valves". I believe mixing valves don't change with water temperature, so it's hard to get consistent water temperature at the faucet with varying solar hot water temperature. I believe anti-s

Re: [RE-wrenches] SWH - mixing valves

Kelly, I have also seen mixing valves get leaky over time. Many mixing valves are designed for controlled input from a boiler at steady 140 degree temps. It is not uncommon for SHW tanks to reach 180+ degrees in certain conditions. If exposed to these higher temps the valves can begin

Re: [RE-wrenches] SWH - mixing valves

lty o-rings, etc. for control items in the water path. Hope this helps, Bill Loesch Solar 1 - Saint Louis Solar - Original Message - From: "Kelly Keilwitz, Whidbey Sun & Wind" To: "RE Wrenches listserve" Sent: Wednesday, May 19, 2010 1:14 AM Subject: [RE-

[RE-wrenches] SWH - mixing valves

Thermal wrenches, I'm having an ongoing issue with mixing valves in my own system not keeping a steady mix domestic HW temperature as the tank temperature varies with solar heating. If I set it for (say) 122˚F mix when the tank is 135˚, it seems to hold that differential at all tank temps -