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Non Functioning Loop

Hank Hulbert
Hank Hulbert Member Posts: 1
in THE MAIN WALL
I live in a split level home that is heated by a 1958 Hydrotherm, gas fired, single zone, hot water baseboard system. I have 2 loops that are not producing heat at all. One is in a grade level room, the other on the second level. The rest of the system works fine. I tried bleeding the system several times. I even installed an automatic air bleed valves on each loop. It did not work. could I have trapped air somewhere in the line? How can I solve this problem? Any advice would be appreciated.
Hank Hulbert

Comments

  • Floyd
    Floyd Member Posts: 429
    Tell us more....

    I assume that your talking a zone valve system....
    do you have boiler drains on the loops so you can purge them...
    are the zone valves for sure open....
    is the circ. on the supply or the return....
    is there an air scoop in the system...
    what is the water press. in the boiler....

    Sounds like a simple air problem... but could
    be many other things also.

    Floyd
  • BRIAN_3
    BRIAN_3 Member Posts: 10
    LOOPS

    SOUNDS LIKE YOU HAVE A MONO-FLO SYSTEM [ ONE MAIN LOOP WITH BRANCHES TO EITHER CONVECTORS OR BASEBOARD ] WHAT IS YOUR SYSTEM PRESSURE ? DO YOU HAVE A COIN VENT ON EACH UNIT ? WHAT TYPE OF EXPANSION TANK DO YOU HAVE ? SOUNDS LIKE AIR IN THE SYSTEM TO ME.
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