• Codes
  • Features

    Features Overview

    Go to features
    Reference

    Reference.

    A reliable and up-to-date source of codes.
    Research

    Research.

    Rapidly and efficiently calculate project parameters.
    Collaboration

    Collaboration.

    Get everyone on the same page and streamline code research.
    Workflows
    Architects General Contractor Building Official & Plans Examiner Inspectors Owner Subcontractors Code Consultants
  • Pricing
  • Login
  • Sign Up
Sign Up
Login
  • Code Library
  • Features
  • Pricing
  • About
  • Careers
  • Help
  • Contact
  • Terms
  • Privacy
Sign Up
Upgrade to Premium
Code calculators: Code Calculators automatically generates a detailed list of requirements.
REFERENCE
Amendment Styling
Industry-leading search
Suggested code sections
Code diagrams
RESEARCH
Code calculators
Filter by topic
Code compare
Code sheet exports
COLLABORATION
Team projects
Bookmarks
Comments
START 2 WEEK FREE TRIAL
Have an account? Sign in
// CODE SNIPPET

C403.11.3 Piping Insulation (Mandatory)

2020 Energy Conservation Code of NYS > 4 [CE] Commercial Energy Efficiency > C403 Building Mechanical Systems > C403.11 Construction of HVAC System Elements (Mandatory) > C403.11.3 Piping Insulation (Mandatory)
JUMP TO FULL CODE CHAPTER

Piping serving as part of a heating or cooling system shall be thermally insulated in accordance with Table C403.11.3.

Exceptions:

  1. Factory-installed piping within HVAC equipment tested and rated in accordance with a test procedure referenced by this code.
  2. Factory-installed piping within room fan-coils and unit ventilators tested and rated according to AHRI 440 (except that the sampling and variation provisions of Section 6.5 shall not apply) and AHRI 840, respectively.
  3. Piping that conveys fluids that have a design operating temperature range between 60°F (15°C) and 105°F (41°C).
  4. Piping that conveys fluids that have not been heated or cooled through the use of fossil fuels or electric power.
  5. Strainers, control valves, and balancing valves associated with piping 1 inch (25 mm) or less in diameter.
  6. Direct buried piping that conveys fluids at or below 60°F (15°C).

TABLE C403.11.3

MINIMUM PIPE INSULATION THICKNESS (in inches)a, c

FLUID OPERATING
TEMPERATURE RANGE
AND USAGE (°F)
INSULATION CONDUCTIVITY NOMINAL PIPE OR TUBE SIZE (inches)
Conductivity
Btu • in./(h • ft2 • °F)b
Mean Rating Temperature, °F < 1 1 to < 11/2 11/2 to < 4 4 to < 8 ≥ 8
> 350 0.32 - 0.34 250 4.5 5.0 5.0 5.0 5.0
251 — 350 0.29 — 0.32 200 3.0 4.0 4.5 4.5 4.5
201 — 250 0.27 — 0.30 150 2.5 2.5 2.5 3.0 3.0
141 — 200 0.25 — 0.29 125 1.5 1.5 2.0 2.0 2.0
105 — 140 0.21 — 0.28 100 1.0 1.0 1.5 1.5 1.5
40 — 60 0.21 — 0.27 75 0.5 0.5 1.0 1.0 1.0
< 40 0.20 — 0.26 50 0.5 1.0 1.0 1.0 1.5

For SI: 1 inch = 25.4 mm, °C = [(°F) - 32]/1.8.

  1. For piping smaller than 11/2 inches and located in partitions within conditioned spaces, reduction of these thicknesses by 1 inch shall be permitted (before thickness adjustment required in footnote b) but not to a thickness less than 1 inch.
  2. For insulation outside the stated conductivity range, the minimum thickness (T) shall be determined as follows:

    where:

    T = minimum insulation thickness,

    r = actual outside radius of pipe,

    t = insulation thickness listed in the table for applicable fluid temperature and pipe size,

    K = conductivity of alternate material at mean rating temperature indicated for the applicable fluid temperature (Btu • in/h • ft2 • °F) and

    k = the upper value of the conductivity range listed in the table for the applicable fluid temperature.

  3. For direct-buried heating and hot water system piping, reduction of these thicknesses by 11/2 inches (38 mm) shall be permitted (before thickness adjustment required in footnote b but not to thicknesses less than 1 inch.

C403.11.3.1 Protection of Piping Insulation (Mandatory)

Piping insulation exposed to the weather shall be protected from damage, including that caused by sunlight, moisture, equipment maintenance and wind, and shall provide shielding from solar radiation that can cause degradation of the material. Adhesive tape shall not be permitted.

Related Code Sections


C403.11.3 [CE] Commercial Energy Efficiency, Piping Insulation (Mandatory)
Piping serving as part of a heating or cooling system shall be thermally insulated in accordance with Table C403.11.3. Exceptions: Factory ...
2020 Energy Conservation Code of NYS > 4 [CE] Commercial Energy Efficiency > C403 Building Mechanical Systems > C403.11 Construction of HVAC System Elements (Mandatory) > C403.11.3 Piping Insulation (Mandatory)
R403.4 [RE] Residential Energy Efficiency, Mechanical System Piping Insulation (Mandatory)
Mechanical system piping capable of carrying fluids above 105°F (41°C) or below 55°F (13°C) shall be insulated to a minimum of R-3 ...
New York State Energy Conservation Construction Code (NYSECCC) > 4 [RE] Residential Energy Efficiency > R403 Systems > R403.4 Mechanical System Piping Insulation (Mandatory)
R403.4 [RE] Residential Energy Efficiency, Mechanical System Piping Insulation (Mandatory)
Mechanical system piping capable of carrying fluids greater than 105°F (41°C) or less than 55°F (13°C) shall be insulated to an R-value of not less ...
2020 Energy Conservation Code of NYS > 4 [RE] Residential Energy Efficiency > R403 Systems > R403.4 Mechanical System Piping Insulation (Mandatory)
N1103.4 [RE] Energy Efficiency, (R403.4) Mechanical System Piping Insulation (Mandatory)
Mechanical system piping capable of carrying fluids above 105°F (41°C) or below 55°F (13°C) shall be insulated to a minimum of R-3 ...
Residential Code 2015 of New York State > 11 [RE] Energy Efficiency > N1103 (R403) Systems > N1103.4 (R403.4) Mechanical System Piping Insulation (Mandatory)
N1103.4 [RE] Energy Efficiency, (R403.4) Mechanical System Piping Insulation (Mandatory)
Mechanical system piping capable of carrying fluids greater than 105°F (41°C) or less than 55°F (13°C) shall be insulated to an R -value of not less ...
2020 Residential Code of New York State > 11 [RE] Energy Efficiency > N1103 (R403) Systems > N1103.4 (R403.4) Mechanical System Piping Insulation (Mandatory)
Help Contact Us Privacy Terms
Code Compare
Code Compare
Highlight differences between any two building codes.
Code Calculators
Code Calculators
Code calculators automatically generate a detailed list of requirements.
Code diagrams
Code diagrams
Unpack the code through illustrations and descriptions.
Search
Search
Don't miss relevant code. Quickly locate sections across your jurisdiction.
Code sheet exports
Code sheet exports
Generate a code sheet that integrates with your drawing set.
Shared projects
Shared projects
Projects provide a dedicated space to collaborate on code research.
UpCodes Premium
Leverage the most sophisticated code compliance platform.
TRY FREE FOR TWO WEEKS VISIT PRICING
UpCodes Premium
Leverage the full code compliance platform.
START 2 WEEK FREE TRIAL LEARN MORE