Commercial water heater output

Discussion in 'Water Heater Forum, Tanks' started by ferd, Sep 15, 2011.

  1. ferd

    ferd New Member

    Messages:
    15
    Location:
    Ohio
    If I have a 400,000 btu boiler heating water into a 370 gallon tank and I change the tank out to a 120 gallon tank, how much capacity do I loose? Assuming 95% eff boiler.
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,183
    Location:
    New England
    What's your usage rate and temperature? Incoming water temp?
  3. ferd

    ferd New Member

    Messages:
    15
    Location:
    Ohio
    output 130 deg incoming can be down to 40 boiler should put out 500 gph Just wondering what differance the tank will make.
  4. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    Round numbers, the boiler heats produces 400 gallons per hour. FIRST hour delivery is the recovery rate ( 400 gallons per hour ) PLUS 70% ot tank. SO your first hour availablilty drops from 660 gallons to 485 gallons. After the first hour, it is all recovery, 400 gallons per hour.
Similar Threads: Commercial water
Forum Title Date
Water Heater Forum, Tanks paint thinner smell while flushing water heater??? Monday at 7:45 PM
Water Heater Forum, Tanks Water heater circuit breaker turned self off, can't be turned on Monday at 1:49 PM
Water Heater Forum, Tanks Tape on Water Heater Connector That Has Gasket? Vertex Blue Caps on Connector Question Oct 22, 2014
Water Heater Forum, Tanks Power Vent for water heater, venting material Oct 21, 2014
Water Heater Forum, Tanks Smell from hot water pipe but only until hot water comes out. Oct 21, 2014

Share This Page