Hello everyone,
I am currently in the process of installing the freshwater system in my build, and i have an idea that i'm going to implement and wanted some helpful criticism from you guys. My plan is to run only one supply line to all the fixtures connected to the outlet of the hot water heater (Girard rv tankless). The Girard has temperature control from a remote display, so the desired temperature would be obtained by setting the temperature with the remote display, no mixing required. This would eliminate the severe intermittent temperature fluctuations i've been reading about, by having full flow (or close to it) through the water heater. I would also have a recirculation line connected to the end of the furthest fixture (kitchen sink) with a solenoid valve to the freshwater tank, so hot water would be instantly available at every fixture with a push of a button, thus saving water. If cold water is desired, one would simply have to turn off the water heater at the remote display. I have everything set up right now so that if this plan goes horribly wrong, only a few changes will have to be made to turn the recirc line into a cold water supply line.
The specs of the freshwater system are:
100 gallon freshwater tank under the bed
1/2 PEX
Flojet 2.9 gpm, 50 psi
Accumulator on the discharge of the pump
Girard 2GWHAM tankless water heater
Does anyone see any flaws with my plan? Or have any ideas?