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Laars Endurance boiler and Watts LF70A mixing valve
I'm still having a heck of a time getting DHW from my Laars Endurance EB110 combi boiler ... both DHW pressure and max temp are the pits ... I've replaced all parts in the DHW system ( heat exchanger , flow switch , mixing valve , etc ) and no luck ... I am getting only 1gpm and only 110 degrees at best in my bathroom from hot faucet ... cold with same 1/2 inch piping is 4 gpm , street pressure is fine ... there is a 4 gpm flow restrictor in the cold water line in to boiler DHW ...
so one question I can't get answered from Watts is , if I remove the thermostat from the LA70a mixing valve , will that then seal the cold water inlet to the valve so that just the hot from the heat exchanger will flow thru the mix valve ? or do I have to take the mix valve out of the line to see what happens to the HW temp at faucet ?
I've been screwing with this beast for a year and guess I may have to chuck it unless someone has magic cure
the service guy at Laars has been helpful but has no solutions ...he must have the worst job there is !!