#31 UCQB AQUATERM CODE#
(Abridged “Plenums” code section from 2021 UMC) 2Ħ02.2 Combustibles within Ducts or Plenums. The documentation is available from your Aquatherm Regional Representative or by contacting Aquatherm Engineering.Īdditionally, the 2021 UMC (Uniform Mechanical Code) has updated wording that allows for the same exception, though the wording is a bit different. Materials listed and labeled for installation within a plenum and listed for the application.Īccording to this code, so long as all Aquatherm pipe and fittings installed within the plenum space are “ fully enclosed” within another material that is “ listed and labeled for installation within a plenum and listed for the application”, the requirements for installation are met.Īquatherm has tested fiberglass insulation and mineral wool insulation enclosing Aquatherm pipe and has obtained the required 25/50 flame-spread and smoke-developed index to be listed with International Code Council. Combustible materials fully enclosed within one of the following:ĥ.3. Except as required by Sections 602.2.1.1 through 602.2.1.8, materials within plenums shall be noncombustible or shall be listed and labeled as having a flame spread index of not more than 25 and a smoke-developed index of not more than 50 when tested in accordance with ASTM E84 or UL 723.ĥ. (Abridged “Plenums” code section from 2021 IMC) 2Ħ02.2.1 Materials within plenums.
Within the new 2021 IMC (International Mechanical Code), which normally governs Aquatherm’s use within a plenum space in the United States, there exists an exception that allows for any 25/50 flame spread and smoke-developed rated insulation to be used in conjunction with Aquatherm pipe.
In testing done in accordance with ASTM E84 or UL 723 the bare pipe had a flame spread of 15 and a smoke developed of 250. AQUATHERM IN PLENUMS – 2021 IMC AND UMC CODE CHANGESīy itself bare Aquatherm PP-R and PP-RP pipe products do not meet the requirements of the International Mechanical Code (IMC) nor the Uniform Mechanical Code (UMC) for use in plenums or return air ducting.
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