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Recent content by joken

  1. joken

    Steam Humidifiers - Health Care

    I recall reading about a high pressure mist water system that does not use steam.
  2. joken

    VVT vs VAV

    We have had very good success with Trane Tracker/Vari-trac VVT systems with roof top units. Properley balanced, I have consistant zone temperature variations of less than one degree total on an eight zone system. The system allows remote or local programing of setpoint limits, airflow etc. Very...
  3. joken

    Heat Pump

    Contact Trane
  4. joken

    UV-C lamps for Indoor Air Quality improvemnet in HVAC system

    Mechya, I am a HVAC person in a hospital an have had the following experience. Two new air handlers in a non clinical area. These units have a over 30 UV tubes and a ballast for each. Tubes need to be replaced annually at $87 ea. Twenty ballasts are toast after three years. The Sterile-Aire...
  5. joken

    Cast Iron Boiler Section Sealing Methods

    I have installed many Burnham water and low press steam boilers with nipples and never had a leak. Although I know nothing about the gasketed boilers I would choose to have one.. Ken
  6. joken

    Boiler feed pump

    I need new boiler feed pumps and am trying to choose between mechanical seals and stuffing box. Have recieved mixed opinions from vendors. Steam @ 100psi. Thanks Ken
  7. joken

    Ozone smell with Electronic filter

    Look at the circuit board and see if it has a j-5 terminal. If it does remove the jumper and reinstall on one pin only (open ckt). This will reduce ozone 20-25% and unit eff 7-10% Ken
  8. joken

    Noisy Vacuum Pump

    I have oil cooled liquid ring pumps that incorporate a suction relief to prevent this problem. The pumps have a 10 min delay off and this sometime creates vacuum below setpoint which would result in noise. A very small amount of air enters this valve and it works well. If only I could keep the...
  9. joken

    External Static Pressure vs. Total Static Pressure

    I ain't an engineer so this will be very basic and to the point. 400cfm/ton at.05 static for residential.Short runs of flex for sound attunuation only.There are many residential tin benders out there that do not have a clue.Bottom line ,you get what you pay for. Ken The HVCA tech
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