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Thread: Polymer vs Iron Headers

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    Question Polymer vs Iron Headers

    We have a 2 year old Raypak CR407L NAT CI IID ASME Low Nox heater that has been nothing but trouble. I've used Raypak heaters for years without much fuss and generally get 5-7 years of use. I am contemplating switching to a heater with polymer headers and wondered if anyone had any comments on this material holding up in commercial environment.

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    banditig's Avatar
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    Re: Polymer vs Iron Headers

    My Raypak came with plastic headers. Oops just noticed you have commercial heater. Sorry disregard
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    Re: Polymer vs Iron Headers

    What are the issues you are having with the unit?

    I know many commercial settings with these units and they have the polymer headers.
    Paul
    http://www.gastekservices.com A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you. If you would like to provide a review of the help I provided, please use the following link to leave a review. gastek - Google Search,

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    Re: Polymer vs Iron Headers

    I don't sell or recommend polymer headers for commercial applications especially if it is going on a spa.

    I too would like to know the current problems you are having...
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    Re: Polymer vs Iron Headers

    Quote Originally Posted by ps0303 View Post
    What are the issues you are having with the unit?

    I know many commercial settings with these units and they have the polymer headers.
    The burners seem to be melting and the cast iron headers are rusting and getting into the water.

    - - - Updated - - -

    Quote Originally Posted by Pool Clown View Post
    I don't sell or recommend polymer headers for commercial applications especially if it is going on a spa.

    I too would like to know the current problems you are having...
    The burners seem to be melting and the cast iron headers are rusting and getting into the water. At first I figured it was water chemistry but the reads are pretty consistent.

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    Re: Polymer vs Iron Headers

    I would like to see the burners. Is this heater in a room? With venting? Any kind of a "meltdown" is almost always due to an overheat condition (of course). If in a room, i can't stress enough how important proper venting is. This includes "make up" air into the room as well as proper vent sizing.

    If not in a room, i would suspect insufficient fuel mix or a "lean" condition (gas line undersized).

    Heaters with blowers or fans don't always mean that a heater will be forced to vent properly.
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    and Paramount pool cleaning systems.

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    Re: Polymer vs Iron Headers

    I've seen a few things melt out the burners and one of them was a high gas pressure and that caused the holes in the burners to elongate. If the flames are huge, then you need to cut the pressure back so the flames are nice and blue. I have also seen where the heat exchanger is condensating onto the burners causing the same effect.

    Also what Pool Clown said above is an issue as well.
    Paul
    http://www.gastekservices.com A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you. If you would like to provide a review of the help I provided, please use the following link to leave a review. gastek - Google Search,

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