Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

steam preheat coils

creger.robert
creger.robert Member Posts: 63
in THE MAIN WALL

tube in tube style coil-only half of coil gets hot-header side

15 psi steam pressure

replaced trap and vacuum breaker

any thoughts ideas?

Comments

  • pecmsg
    pecmsg Member Posts: 5,848

    A little light on information

    got pictures.

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 17,454

    @creger.robert

    Coil could have frozen internally. When that happens you get no heat or partial heat, Steam inlet hot, and trap hot coil underperforms or not at all.

    When this happens steam bypasses internally and parts of coil do not heat.

    To verify cut hole in duct and check temp across coil

    Also check exposed ends of tubes opposite inlet. Some may be hot cold ones have frozen internally.

    You will see no leak with this issue

Categories