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Posted by Dave on December 06, 2005 at 13:57:10:
In Reply to: Re: results of temperature experiment and Phase III posted by Heatpro on December 06, 2005 at 13:21:52:
: You would tee the heated water from the boiler to the return water from the system - at the hot water taps of the tanks, so the boiler Taco 0010 can not force water backwards through the heating circuits because of each of the heating circuit flow checks.
: You would tee the supply manifold to the system circuits to the pipe going to the boiler to heat the water - at the cold water taps of the tanks, so the system draws from the tanks and can not pull water from the boiler due to the 0010 check valve.
+++ Alright, now I'm getting it....The 2" boiler outflow pipe would be reduced to 1.5" and tee to the 1.5" system return manifold at the hot inlet to the Ergomax.
The 2" boiler inflow pipe would be reduced to 1.5" and teed to the 1.5" system supply manifold at the tank cold water connection of the Ergomax.
The ONLY checkvalve on this system would be on the 0010 pump.
: As to the condensing temperature, the manufacturer might have more say about the expected condensing temperature. The DOE AFUE testing procedure is done at those temperatures, so I doubt there would be condensation at those temperatures as that would make the boiler a condensing boiler for the ratings - not an 80& - 87% AFUE range.
+++By manufacturer, I assume you are referring to Lochinvar. They say the boiler inlet temp should not be lower than 140 for prolonged periods.
What would you set the aquastat on the Ergomax to.....150? When would the Ergomax then cause the boiler to fire...at what temp?
and would I just pipe the Dhw cold water through the Ergomax to the PhaseIII (cut cold water supply to Phase III and send cold water through Ergomax to Phase III and then out to house)?preheat the
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