Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Commercial ultra

Steve_210
Steve_210 Member Posts: 645
I was at a function on Tuesday night where a Weil McLain rep was speaking.
Asked what was that in a MAWP on the commercial ultra his response was 100 psi.
It is an aluminum heat exchanger.
Has anybody seen this on the literature anywhere.
I know Johnny asked this question a while back but I did not see if it was resolved.

Comments

  • RobG
    RobG Member Posts: 1,850
    I could not find it in the main literature but if you look at the replacement parts list the relief valves go from 30 to 100PSI. You would think they would want to make it a little easier to find. It's a selling and design feature.

    3 Pressure relief valve ASME 30 PSI, 1¼” NPT female
    ASME 50 PSI, 1¼” NPT female
    ASME 80 PSI, 1¼” NPT female (includes new P/T gauge)
    ASME 100 PSI, 1¼” NPT female (includes new P/T gauge)
    383-600-093
    383-600-101
    383-600-299
    383-600-298
  • icesailor
    icesailor Member Posts: 7,265
    RobG said:

    I could not find it in the main literature but if you look at the replacement parts list the relief valves go from 30 to 100PSI. You would think they would want to make it a little easier to find. It's a selling and design feature.

    3 Pressure relief valve ASME 30 PSI, 1¼” NPT female
    ASME 50 PSI, 1¼” NPT female
    ASME 80 PSI, 1¼” NPT female (includes new P/T gauge)
    ASME 100 PSI, 1¼” NPT female (includes new P/T gauge)
    383-600-093
    383-600-101
    383-600-299
    383-600-298

    Rob, is this the boiler you are looking for? You have to look farther into the Weil-McLain site. Its under commercial condensing gas boilers.

    http://www.weil-mclain.com/en/assets/pdf/550100086_0814Web-manual.pdf

  • Paul Rohrs_14
    Paul Rohrs_14 Member Posts: 80
    Better check the literature on their website. 30# is listed currently as the MAWP. It's in their specification.
  • icesailor
    icesailor Member Posts: 7,265
    According to the W-M Website under Commercial Ultra's, you can gang them up, and they come up to 100# if needed. Read the above PDF from their website.