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  1. steve agnew

    Navien 240S On demand hot principle

    Yes...but if you don't need a buffer tank or recirculating line, it is really more efficient...
  2. steve agnew

    Navien 240S On demand hot principle

    Once I got rid of the stupid safety flow limiters, the unit worked well and my 280' run of 1-1/4" pipe only dropped about 1" wc, even when the furnace is also on at 80 kBtus/hr.
  3. steve agnew

    Mitsubishi MSZ-GL18NA-U1

    Installed a Mitsubishi MSZ-GL18NA-U1 minisplit, 18,000 btus/hr (1.5 tons) for a 530 sq.ft. shop. Had to buy a Pittsburgh gauge set and vac pump from Harbor Freight, but also needed a precision vacuum gauge, Testo 552, to measure leak rate better. The install I chose placed flare connections...
  4. steve agnew

    Navien 240S On demand hot principle

    Just installed a Navien 240S, 199,900 Btu/s hr, enough for 3 simultaneous showers...or so it would seem. There is a lot more to on-demand hot water that the brochures do not mention at all, but the technology is great anyway. First of all, if you put in a big unit like the 240s, make sure that...
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