New Lochinvar Knight install

Discussion in 'Boiler Forum' started by DEA, Oct 11, 2011.

  1. DEA

    DEA New Member

    Jun 12, 2011
    hillsborough nh
    I got a lot of help from this forum as well so posting my DIY install.

    WBN081 feeding 3 zones, third zone added to replace pellet stove in 1/2 finished basement.
    Hot water via a 60,000 btu heat exchanger piped into the electric 80 gallon water heater. Taco bronze pumps water through a 16 plate SS heat exchanger from the bottom of tank to the top (enters from drain andexits at T&P valve), hot water from boiler enter other side of heater exchanger to warm water. Electric aquastat set at 120 F. Aquastat for boiler set at 150 (tank rated for 160 max) Hot water working better then i had expected, greater recovery time.
    Circuit added for the pumps and pump controller, boiler and condensate pump on their own circuit.
    Runs on LP
    Vented where old gross power vent for oil boiler was

    Some things reused from old boiler.....air vent, taco 007 (now for hot water) and expansion tank.

    One odd thing.... town inspector stated no LWCO needed as the flow/pressure and hi-temp cut out built into the boiler provide the needed protection..?

    Pics not great as i dont have a very wide lens (17mm) DSC_0160.jpg DSC_0161.jpg DSC_0162.jpg DSC_0163.jpg DSC_0164.jpg
    Last edited by a moderator: Oct 13, 2011
  2. BadgerBoilerMN

    BadgerBoilerMN Hydronic Heating Designer

    Mar 4, 2011
    hydronic heating designer/contractor
    Nice looking job. Pretty blue pipe.

    LWCO is not required by the ICC nor in most model codes unless the boiler is at the highest point of the system or the installation commercial.

    I nearly always install a LWCO on electric boilers but know other professional boiler men who use a LWCO on all their installations...old women, hehehee.
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  4. DEA

    DEA New Member

    Jun 12, 2011
    hillsborough nh
    Lol, thanks. I think the blue and red paint add at least 2% to the overall efficiency....
  5. Dana

    Dana In the trades

    Jan 14, 2009
    Depends on the emissivity of said paint, eh? ;)

    But seriously insulating of all of the heat distribution & return plumbing does indeed increase system efficiency, the low-E of bare copper notwithstanding.
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