Ask Experts Questions for FREE Help !
Ask
    Gubins's Avatar
    Gubins Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Feb 21, 2007, 03:39 PM
    Hydronic heating pipe size
    I wish to install a hydronic kick plate heater but it only has 1/2" inlet & outlets the zone has 3/4"pipe should I put in a bypass around the heater to keep the flow the same?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Feb 22, 2007, 03:07 AM
    If you are going to keep it on the same zone as other items yes. If you are going to control the kick heat with a separate zone no. But if you put a bypass in you will get very little flow to the kick. You can just tap off the 3/4 with 3/4 x 3/4 x1/2 tees and just splice the kick in to the supply and return lines and add a zone valve to control the kick.
    Gubins's Avatar
    Gubins Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Feb 22, 2007, 07:37 AM
    Can I connect the kick with 1/2" tees and if I run a 3/8" bypass around the kick would that create enough back pressure to not need a valve?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #4

    Feb 22, 2007, 08:33 AM
    Quote Originally Posted by Gubins
    can I connect the kick with 1/2" tees and if I run a 3/8" bypass around the kick would that create enough back pressure to not need a valve?
    Not really. You need the 3/4 flow to the old system.
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
    Uber Member
    		  
    #5

    Feb 22, 2007, 09:43 AM
    Half inch pipe creates about 5 times as much back pressure as a similar length of 3/4'' pipe. However your system could have enough reserve capacity to maintain adequate flow without a bypass on the kick plate. A 3/8'' bypass might not do much good since it would create 16 times as much back pressure as a similar length of 3/4''. If you have an existing 3/4'' line in the area, use it with a ball valve. Ball valves don't throttle quite as well as a globe valve, but seldom leak around the stem. Just fiddle with it until you have enough flow through the kick plate.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Max pipe size in load bearing walls [ 2 Answers ]

I have a 2" line stubbed for a drain in an area of a 15' basement that will be framed 8' high with the rest used for storage above. Are these walls now considered load bearing? What's the maximum size pipe I can run through a load bearing 2x4 wall assuming I'm using a protective plate.

Hydronic heating system [ 2 Answers ]

I'm a licensed electrician that's been asked to hook up a 4 zone hydronic heating system which I have never worked with before. It's a mighty therm boiler model HH-PH, using RIB2041D relays 24 volt thermostat and a side wall vent. I've got all the 120 volt hook-up done and the relays hooked in...

Pvc pipe size per code [ 1 Answers ]

I have a 1982 double wide cavco that sits above ground. I had a slow drainage problem in the tub and shower. I called the plumber out, actually three of them worked on the issue, and was not resolved. The supervisor explained that after trying for four hours, they were going to call it quits. He...

Blocked central heating hot water pipe [ 2 Answers ]

Hi, Hope someone can help me out. A brief senario: the hot water comes out of the boiler and then goes through a pump. After this it get split up 2 ways (1) to the radiators which are hot, working and not the problem. (2) The problem path is through a hot water to water heat exchanger tank...

Question about pipe size [ 1 Answers ]

Hi,everyone, I am confused about the pipe size for a urinal. The specification for one brand flushometer says that: 1" IPS angle stop and 1 1/4" top spud I don't know where the top spud is. If my water supply line pipe size is 1 1/4" IPS, should i find a flushometer with 1 1/4" angle stop or 1...

View more questions Search