(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 2 of 2

Thread: is the 1/2" pex to restrictive for my situation?

  1. #1
    DIY Member enosez's Avatar
    Join Date
    Jan 2007
    Long Island NY

    Default is the 1/2" pex to restrictive for my situation?

    Here's the quick set up.
    Have a boiler in a garage that is about 130' away from the main boiler in the house. (tenants rent house).
    The house boiler is oil and tenants routinely run out of oil. Boiler is old.
    I ran a zone of 1/2" pex out to the boiler to basically keep it warm and in dire situations to keep house/pipes from freezing.
    Problem is, the flow switch does not activate the boiler even though the circulator is pumping.
    My thought is the long run plus the possible restrictiveness of the boiler is keeping flow to a minimum.
    I tried it using the circulator on the boiler (two circulators and yes flow is correct) also and still cant get the flow switch to open?

    I can see movement of water in the pex I guess not enough to open the flow switch.

    Before I spend money on a roll of 3/4" pex, does anyone think it will help?

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    New England


    Not sure how much heat you'd get on 130' of 1/2" pex after pumping it that far - you'd lose a lot of heat just in the transfer. But, most pumps have an end switch in them that you could probably hook up to activate the boiler.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

Similar Threads

  1. Does anyone have a creative solution to this situation?
    By Saiphes in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 8
    Last Post: 04-01-2012, 09:50 PM
  2. What would you do in this situation ?
    By kstuart in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 31
    Last Post: 08-10-2010, 08:16 PM
  3. Confusing Situation
    By sibi1972 in forum HVAC Heating & Cooling
    Replies: 6
    Last Post: 10-09-2008, 09:33 PM
  4. Flange height situation.
    By iminaquagmire in forum Toilet Forum discussions
    Replies: 4
    Last Post: 05-14-2008, 10:43 AM
  5. We have a weird situation w/ a tub...
    By semushlich in forum Shower & bathtub Forum & Blog
    Replies: 3
    Last Post: 08-10-2006, 02:48 PM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts