(Effective until July 1, 2020)
Section C403.2.9—Piping insulation.
C403.2.9 Piping insulation. All piping serving as part of a heating or cooling system shall be thermally insulated in accordance with Table C403.2.9.
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 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). |
C403.2.9.1 Protection of piping insulation. Piping insulation exposed to weather shall be protected from damage, including that due to sunlight, moisture, equipment maintenance and wind, and shall provide shielding from solar radiation that can cause degradation of the material. Adhesives tape shall not be permitted.
(Effective July 1, 2020)
Reserved.
[Statutory Authority: RCW
19.27A.020,
19.27A.025,
19.27A.160 and chapter
19.27 RCW. WSR 19-24-040, § 51-11C-40328, filed 11/26/19, effective 7/1/20. Statutory Authority: RCW
19.27A.025,
19.27A.160, and
19.27.074. WSR 16-03-072, § 51-11C-40328, filed 1/19/16, effective 7/1/16. Statutory Authority: RCW
19.27A.020,
19.27A.025 and chapters
19.27 and
34.05 RCW. WSR 13-04-056, § 51-11C-40328, filed 2/1/13, effective 7/1/13.]