[CCMC 14382-R] CCMC Canadian code compliance evaluation

From: National Research Council Canada

In most jurisdictions this document is sufficient evidence for approval by Canadian authorities.

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Code compliance opinion

It is the opinion of the Canadian Construction Materials Centre that “CL4,” when used as an alternative solution for thermal/fire protection where a fire rating is required for pipes, ventilation ducts, and cooking exhaust ductwork in accordance with the conditions and limitations stated in this evaluation, complies with the following Canadian code(s).

National Building Code of Canada 2015

Code provision Solution type
3.1.7.1. Determination of RatingsAlternative
3.6.3.5. Grease Duct EnclosuresAlternative
3.6.5.4. Coverings, Linings, Adhesives and InsulationAcceptable
3.6.5.5. Insulation and CoveringsAcceptable
6.5.1.1. Insulation and CoveringsAcceptable
9.33.6.4. Coverings, Linings, Adhesives and InsulationAcceptable
9.33.8.2. Insulation and CoveringsAcceptable

Ontario Building Code 2017

Ruling No. 21-04-367 (14382-R) authorizing the use of this product in Ontario, subject to the terms and conditions contained in the Ruling, was made by the Minister of Municipal Affairs and Housing on 2021-04-12 pursuant to s.29 of the Building Code Act, 1992 (see Ruling for terms and conditions). This Ruling is subject to periodic revisions and updates.


The above opinion is based on the evaluation by the CCMC of technical evidence provided by the evaluation holder, and is bound by the stated conditions and limitations. For the benefit of the user, a summary of the technical information which forms the basis of this evaluation has been included.

  Product information

Product description

CL4 is a duct/pipe wrap insulation made from calcium, magnesium, and silica encapsulated by a fibre-reinforced foil. The product is 38 mm (1 ½ in.) thick and has a density of 96 kg/m3 (6 lbs/ft3). It is available in rolls of various widths and lengths. It is installed around pipes and ducts, overlapped, taped and or pinned as necessary to provide continuity. All overlapping, sealing materials shall be fully compatible with the product and as recommended by the manufacturer’s written instructions.

A roll of the CL4 fire duct wrap insulation
Figure 1. CL4 fire duct wrap insulation

 

An example of CL4 installed on a pipe
Figure 2. CL4 installation

Manufacturing plants

This evaluation is valid only for products produced at the following plants:

  • London, Ontario, Canada

  Conditions and limitations

The CCMC’s compliance opinion is bound by this product being used in accordance with the conditions and limitations set out below.

  • The product’s fire ratings and corresponding installation instructions are based solely on Quality Auditing Institute Ltd.’s (QAI) Building Listing Program under listings F405-1-1, F405-1-2, F405-1-3, and F405-1-4.
  • CL4 material shall be applied directly to the ductwork and piping in strict accordance with the listed systems referenced above and in the manufacturer’s instructions.
  • The maximum service temperature is 120°C.
  • CL4 is limited for use with grease ducts with the following characteristics:
    • Maximum duct size: 0.5806 m2 (900 in.2) with a maximum 0.92 m (36 in.) dimension
    • Minimum duct wall thickness: 1.6 mm (16 gauge)
    • Ducting is limited to rectangular, square or circular cross-sections.
    • Ducting is to conform to Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) requirements.
  • CL4 is limited for use with ventilation ducts of the following:
    • Maximum duct size: 1.3316 m2 (2 064 in.2) with a maximum 2.18 m (86 in.) dimension
    • Minimum duct wall thickness: 0.64 mm (22 gauge)
    • Ducting is limited to rectangular, square or circular cross-sections.
    • Ducting is to conform to Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) requirements.
  • CL4 is limited to a maximum 200 mm outside diameter (8 in.) made from Schedule 40 steel, cast iron or copper for piping applications.
  • The phrase “CCMC 14382-R” must be clearly identified on the product’s label and/or packaging.

  Technical information

This evaluation is based on demonstrated conformance with the following criteria:

Evaluation requirements
Criteria number Criteria name
CCMC-TG-230719-15CCMC Technical Guide for Fire Resistance of HVAC Piping Insulation

The proponent submitted documentation from CCMC recognized laboratories, which showed that the material and/or accessories of the components used in the product met the specified standards as referenced below.

Material requirements

Requirements for physical properties of the product

Property Requirement Result
Length -1%, +3% 0%
Width 0, +3% 1%
Thickness 90% of published value 99%
Hot surface performance at maximum service temperature of 120°CTable footnote (1) No flaming, glowing, smouldering or smoking Pass
Exposed surface temperature at maximum service temperatureTable footnote (2) Exposed surface <70°C 47°C
Linear shrinkage – length < 4% 0.4%
Linear shrinkage – width < 4% 0.7%
Corrosiveness No greater than sterile cotton Pass
Surface burning characteristics – Flame-spread value < 25 10
Surface burning characteristics – Smoke-developed classification < 50 10
Thermal conductivity – original Report value 0.035 W/m·°K
Thermal conductivity – after aging Report value 0.035 W/m·°K
Dimensional change < 0.5% 0.1%
Water vapour permeance < 1.15 ng/(Pa·s·m2) 0.46 ng/(Pa·s·m2)
Emittance < 0.1 0.034

 

Requirements for physical properties of aged product
Property Requirement Result
Humidity resistance (long term testing) No evidence of delamination, corrosion or metallization Pass
Water vapour permeance < 1.15 ng/(Pa·s·m2) 6.29 ng/(Pa·s·m2)Table footnote (1)
Emittance (after aging) < 0.1 0.05

Performance requirements

The results of testing the product are summarized in the table below. The performance of the product has been tested in accordance with the CCMC Technical Guide for qualification for use as fire duct wrap insulation. The product’s fire ratings are based solely on QAI listings F405-1-1, F405-1-2, F405-1-3, and F405-1-4.

Results of testing the performance requirements of the product
Property Requirement Result
Pipes and ductworkTable footnote (1) Report fire-resistance rating 1 hour at 38 mm thickness (butt joint)
Report fire-resistance rating 2 hours at 38 mm thickness (76 mm joint overlap)
Grease ductsTable footnote (2) Report fire-resistance rating 2 hours at 76 mm thickness

 

CL4 Grease Duct Insulation System

“Grease Duct Insulation System” is rated for 229 mm (9 in.) clearance from duct to combustibles using one layer of CL4 rated for 0 mm clearance from the outside of the insulation to combustibles using one layer of “CL4” on the inside layer and one layer of CL4 on the exterior layer for a total thickness of 76 mm (3 in.) overall.

All of the relevant requirements within NFPA 96, “Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations,” must be satisfied to demonstrate compliance for this evaluation.

Installation specifics for the CL4 Grease Duct Insulation System
Figure 3.

Installation of CL4 Grease Duct Insulation System

  1. Install CL4 with metal mesh on the exterior side of the installation.
  2. 23 cm (9 inches) minimum clearance from duct to combustibles when 1-layer of CL4 is installed.
  3. 0 mm cleanrance allowed to combustible materials such as wood when 2-layers (76 mm thickness) of CL4 is installed.
  4. 23 cm (9 inches) minimum clearance from duct to combustibles such as wood when 1 layer of CL4 is installed. 0 mm clearance to combustibles is obtained upon installation of 2nd layer of CL4.
  5. Inside duct.

Notes

  • Single 38 mm (1 ½ in.) thick layer installation of CL4 wrap allows for minimum 23 cm (9 in.) clearance from ductwork to combustibles with 76 mm (3 in.) overlaps at all single layer installation joints.
  • Two 38 mm (1 ½ in.) layers of insulation are required for 0 mm clearance from the first layer using CL4 with tightly butted seams and the outer layer with CL4 installed with tightly butted seams staggered a minimum of 152 mm (6 in.) from the first layer seams. The exterior layer of CL4 wrap must exceed the size of the interior layer only if CL4 is installed on the interior layer. Butted seams on the first layer of the wrap must always be covered with the second layer, which is required to overlap by a minimum of 76 mm (3 in.).
  • CL4 is to be installed continuously along the ductwork in the same manner as a gypsum shaft. Intermittent installation is prohibited.
  • Wire mesh installed under one side of CL4 foil must always be to the exterior of the outside layer of insulation away from the ductwork.
  • Exterior wire mesh is required to meet protection, integrity and movement criteria of NFPA 96 for both normal temperatures and hot fire exposures.
  • CL4 requires metal mesh to be installed on the exterior side of the installation.
  • Install firestops and access panels as outlined in the QAI listing F405-1-4. The reduced clearance access panel requires only two layers of CL4 insulation as per the manufacturer’s instructions.

Administrative information

Disclaimer

This evaluation is issued by the Canadian Construction Materials Centre (CCMC), a part of the Construction Research Centre at the National Research Council of Canada (NRC). The evaluation must be read in the context of the entire CCMC Registry of Product Assessments and the legislated applicable building code in effect.

The CCMC was established in 1988 on behalf of the applicable regulator (i.e., the provinces and territories) to ensure—through assessment—conformity of alternative and acceptable solutions to regional building codes as determined by the local authority having jurisdiction (AHJ) as part of the issuance of a building permit.

It is the responsibility of the local AHJs, design professionals, and specifiers to confirm that the evaluation is current and has not been withdrawn or superseded by a later issue. Please refer to the website or contact:

Canadian Construction Materials Centre
Construction Research Centre
National Research Council of Canada
1200 Montreal Road
Ottawa, Ontario, K1A 0R6
Telephone: 613-993-6189
Fax: 613-952-0268

The NRC has evaluated the material, product, system or service described herein only for those characteristics stated herein. The information and opinions in this evaluation are directed to those who have the appropriate degree of experience to use and apply its contents (i.e., AHJs, design professionals and specifiers). This evaluation is only valid when the product is installed in strict compliance with the stated conditions and limitations of evaluation and the applicable local building code. In circumstances where no applicable local building permit is issued and that no confirmation of compliance ‘for use in the intended field application’ is undertaken, this evaluation is null and void in all respects. This evaluation is provided without representation, warranty, or guarantee of any kind, expressed, or implied, and the NRC provides no endorsement for any evaluated material, product, system or service described herein. The NRC accepts no responsibility whatsoever arising in any way from any and all use and reliance on the information contained in this evaluation with respect to its compliance to the referenced code(s) and standard(s). The NRC is not undertaking to render professional or other services on behalf of any person or entity nor to perform any duty owed by any person or entity to another person or entity.

Language

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In the case of any discrepancy between the English and French version of this document, the English version shall prevail.

Copyright

© 2021 Her Majesty the Queen in Right of Canada, as represented by the National Research Council of Canada.

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the CCMC.

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