Print Page - Hot water isolation valves

Title: Hot water isolation valves
Post by: S/V AMITY on November 02, 2020, 05:58:23 PM

Have a Westerbeke W44B tied with the domestic H/W tank. Does anyone see a problem with installing valves to isolate the feed & return engine coolant lines to the H/W tank? Reason for doing so would be to loop-out the tank in case the tank develops a leak where the coolant leaks into the fresh water side of the tank or vice versa.

Title: Re: Hot water isolation valves
Post by: S/V Deo Volente on November 04, 2020, 09:58:59 AM

I built a manifold with valves to isolate the water heater, and the "bus" heater, as well as a valve to shut off the bypass. This way I can heat the water faster by shutting the bypass. On long runs under power I shut off the water heater to keep it from boiling over.

Title: Re: Hot water isolation valves
Post by: S/V AMITY on November 04, 2020, 10:11:10 AM

OK, thanks!

Title: Re: Hot water isolation valves
Post by: S/V AMITY on December 02, 2020, 08:40:14 AM

Has anyone here worked out a thermostatic control somewhere in the HW system to control the temp? 160 deg. right from the HW tank coming out of a tap or shower is not good. I know there are thermostatic shower control valves for house use (required by code)... might one of those be adaptable for our systems?

Title: Re: Hot water isolation valves
Post by: S/V AMITY on December 02, 2020, 01:59:19 PM

Found this: https://www.amazon.com/Atmama-Thermostatic-Mixing-Connections-Temperature/dp/B08781SRCW/ref=sr_1_25?dchild=1&keywords=water+temp+mixing+valve&qid=1606935268&sr=8-25

Should solve the problem.

Pearson 365 and 367

Pearson 365 and 367 => Pearson 365/367 Mechanic Shop => Topic started by: S/V AMITY on November 02, 2020, 05:58:23 PM