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Author Topic: Lack of heat through heat exchanger  (Read 8223 times)

dhymers

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Re: Lack of heat through heat exchanger
« Reply #15 on: November 19, 2014, 01:03:48 PM »
So my local dealer has recommended and priced me a M25-30 which is a 30 plate 20x5" exchanger for $600.00.  A little pricy but will this be suitable or should I stick to a 50 or 60 plate 12x5" for $300.00 - $400.00?
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RSI

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Re: Lack of heat through heat exchanger
« Reply #16 on: November 19, 2014, 01:09:13 PM »
It would probably work but more plates will have less head pressure drop because they are all in parallel. No reason to spend double.
If you plan on ordering one, you could post a link before ordering to make sure it is the right thing.
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dhymers

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Re: Lack of heat through heat exchanger
« Reply #17 on: November 20, 2014, 11:44:26 AM »
Here is the 2 exchangers I was quoted, the 50 plate one is 50.00 cheaper and I suspect the better one to go with but just want to check first.
A M25-30 will do 200.000 btu/hr. with 20 gpm and 180 degree boiler water. An M31-50 will do 170’000 btu/hr with 180 degree water.

Thx again!

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dhymers

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Re: Lack of heat through heat exchanger
« Reply #18 on: December 02, 2014, 06:43:13 AM »
Well I installed a 50 plate exchanger and workes so much better.  195 in and boiler sits at 190 now.  Drops to 170-180 when a zone opens and recovers quickly from there.  Thanks for the assistance in solving this issue!  The heat from the baseboards is incrediably different now!!

Thanks again!!
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