Below, you will find a variety of Specs & Submittals documents for Rossi Damper hardware. Whether you're a mechanical engineer, a consulting or specifying engineer, an HVAC contractor, an OEM or a project owner, these specifications will show how Rossi components meet the strictest standards and regulations for any project.
Specifications (For Consulting Engineers & Contractors)
The below forms are three standard kinds of 'specifications.' If you're an engineer who would like to specify our products, you can use these specifications below to make it easy.
- Standard 10-part Specification (CSI Format)
This is a standard CSI format 10-part Specification. This 10-part spec data conforms to the editorial style of The Construction Specifications Institute with Division 23 corresponding to “HVAC” and Section 23 22 13 corresponding to dampers.
- Standard 3-part Specification (CSI Format)
This is a standard CSI format 3-part Specification. This 10-part spec data conforms to the editorial style of The Construction Specifications Institute.
- Guide Spec
This is a specification written in simple paragraph format instead of the CSI 3-part format. Smaller projects sometimes prefer these simple specs on the drawings and don't use a 3-part spec. Other times, an engineer may have their own 3-Part spec and prefer to simply "cut & paste" our 'guide spec' language into Part 2 of their own spec. This is also for consulting engineers who are looking for a spec that simply shows our product features in paragraph form, without any of the info from part 1 and 3 of the CSI 3-part format.
- Contractor’s Option
A "Contractor's option" is a spec that engineers can use to let a contractor look at our damper hardware products as the recommended option on a given project. If you're an engineer who wants to stay with your normal product spec but would like to use our Rossi damper components, we encourage you to use this spec to get the contractor's approval to use our hardware in place of whatever was originally written.
Submittal (For Contractors)
The below document is the submittals and product data sheets for each of our products. If you're a contractor who would like to put in a submittal for Rossi HVAC Hardware on a job, you can simply use this document.
ROSSI Non Metallic Materials are UL Listed, SMACNA Approved & Plenum Rated
In designing and developing our HVAC components, we incorporate a non metallic, polymeric
material (Zytel-Nylon) to make our product lines more durable, safer and more user friendly. Rossi
non-metallic parts are all manufactured from Polyamide 66 (PA66), Flame Retardant, Glass
Reinforced, “Zytel” – the engineering polymer made by Dupont. To ensure Rossi’s compliance with
UL, SMACNA and Plenum standards, we have presented our entire product line to both the ICBO
and UL engineering staffs. They, in turn, approved the safety standards of our non-metallic
material, PA66, and referred us to the following documentation which validates the use of this
polymeric material - Polyamide 66 (PA66) - as the material outlined for use in all Non-Metallic
Components as specified in the UL 1995 Standards Code for Heating & Cooling (CSA-C22.2 No.
238 UL 1995) with the required flammability rating of 5VA.
Non Metallic Components as validated by UL 1995 and Plenum Ratings
The use of Polymeric Materials in HVAC components is set forth in the Underwriter Laboratories
(UL) 1995 Standards Code for Heating & Cooling (CSA-C22.2 No. 238 UL 1995). Specifically,
clause 18-2 of this code (p.40) explains the requirements and exceptions for “non metallic
materials.” Moreover, UL has developed a test called the “Steiner Tunnel”, which is used to
evaluate the safety of non-metallic material in plenum areas. The requirement for passing the
Steiner Tunnel test are also outlined in section 18.2.
Paragraph 18.2 - Flame Spread Rating & Smoke Developed Rating
Paragraph 18.2 states:
“Material in a compartment handling conditioned air for circulation through a duct system shall
have a flame spread rating of not more than 25, and a smoke developed rating of not more than 50,
when tested as specified in Surface Burning Characteristics of Building Materials and Assemblies,
CAN/ULC-S102, and their requirements for Standard Method of Tests For Surface Burning
Characteristics of Building Materials, UL723. This requirement does not apply to the following.
(c) Miscellaneous small parts such as . . . bushings . . . wire ties, clamps . . . having a total exposed
surface are not exceeding 161.29 cm2 (25 in.2 ).
(e) Molded or formed components (not liners) of polymeric materials in such quantities that their
total exposed surface area within the compartment does not exceed 0.93 m2 (10 ft2).”
All Non-Metallic materials used in Rossi products are exempted from the flame spread rating
and smoke developed rating by sub-sections (c) and (e) of Paragraph 18.2 because their total
exposed surface area within the compartment does not exceed 161.29 cm2 nor 0.93 m2 (10 ft2).
Paragraph 18.3 - Flammability
Paragraph 18.3 states:
“Polymeric material exempted by item (e) of clause 18.2 shall have a flame spread rating of not
more than 25, or shall comply with the requirement of the vertical burning test for classifying
material 9405V in accordance with the Standards Tests for Flammability of Plastic Materials in
Devices and Appliances, UL 94 and Test 5V (500W) of Evaluation of Properties of Polymeric
Materials, CAN/ CSA-C22.2 No. 0.17 with a flammability rating of 5VA.”
All ROSSI polymeric materials comply with Paragraph 18.3 above and have the requisite
flammability rating of 5VA as set forth in the table below.
The table above sets forth the requisite fire rating of 5VA for Polyamide 66 (PA66), Flame Retardant, Glass Reinforced, designated “Zytel” furnished as pellets – which is the polymeric material used by Rossi in all non-metallic parts.
Conclusion: Under paragraphs 18.2 and 18.3 of the UL 1995 Standards Code for Heating & Cooling (CSA-C22.2 No. 238 UL 1995), all non metallic material used by Rossi adheres to the required flammability rating of 5VA and, thus, satisfies all UL requirements, Plenum ratings and SMACNA standards.