Installation, supports, testing & identification

Grounded in the retrieved California Mechanical Code — click a citation to read the verbatim passage:

• CMC § 1108.2 High relevance — show source text

  1108.2 Electrical . . . . . . . . . . . . . . . . . . . . 237

  1108.3 Emergency Shutoff . . . . . . . . . . . . 237

  2025 CALIFORNIA MECHANICAL CODE

  1108.4 Installation, Maintenance, and Testing . . . . . . . . . . . . . . . . . . . . . 237

  1108.5 Emergency Pressure Control System . . . . . . . . . . . . . . . . . . . . . 237

  1109.0 Refrigeration Piping, Containers, and Valves . . . . . . . . . . . . . . . . . . 237

  1109.1 Materials . . . . . . . . . . . . . . . . . . . . 237

  Table 1109.1 Materials for Refrigerant Piping, Tubing, and Fittings . . . . . . . . . . . 239

  1109.2 Joints . . . . . . . . . . . . . . . . . . . . . . 239

  1109.3 Penetration of Piping . . . . . . . . . . 239

  1109.4 Location of Refrigeration Piping . . 239

  1109.5 Underground Piping . . . . . . . . . . . 239

  1109.6 Support . . . . . . . . . . . . . . . . . . . . . 239

  1109.7 Pipe Enclosure . . . . . . . . . . . . . . . 239

  1109.8 Visual Inspection . . . . . . . . . . . . . 240

  1109.9 Condensation . . . . . . . . . . . . . . . . 240

  1109.10 Identification . . . . . . . . . . . . . . . . . 240

  1110.0 Valves. . . . . . . . . . . . . . . . . . . . . . 240

  1110.1 More than 6.6 Pounds of

  Refrigerant . . . . . . . . . . . . . . . . . . 240

  1110.2 More than 110 Pounds of

  Refrigerant . . . . . . . . . . . . . . . . . . 240

  1110.3 Support . . . . . . . . . . . . . . . . . . . . . 240

  1110.4 Access . . . . . . . . . . . . . . . . . . . . . 240

  1110.5 Identification . . . . . . . . . . . . . . . . . 240

  1111.0 Pressure-Limiting Devices . . . . . . 240

  1111.1 Where Required . . . . . . . . . . . . . . 240

  1111.2 Setting . . . . . . . . . . . . . . . . . . . . . 240

  1111.3 Location . . . . . . . . . . . . . . . . . . . . 240

  1111.4 Emergency Stop . . . . . . . . . . . . . . 240

  1112.0 Pressure-Relief Devices . . . . . . . . 241

• CMC § 1204.1 High relevance — show source text

  1204.1 General. . . . . . . . . . . . . . . . . . . . . 258

  1204.2 Color and Information . . . . . . . . . . 258

  1204.3 Potable Water. . . . . . . . . . . . . . . . 258

  1204.4 Nonpotable Water. . . . . . . . . . . . . 258

  2025 CALIFORNIA MECHANICAL CODE

  xl

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  TABLE OF CONTENTS

  Table 1204.3 Minimum Length of Color Field and Size of Letters. . . . . . . . 258

  1204.5 Location of Piping Identification . . . 258

  1204.6 Flow Directions . . . . . . . . . . . . . . . 258

  1204.7 Heat Transfer Fluid. . . . . . . . . . . . 258

  1204.8 Identification of Chemical

  Additives . . . . . . . . . . . . . . . . . . . . 258

  1205.0 Installation, Testing, and Inspection . . . . . . . . . . . . . . . . . . . 258

  1205.1 Operating Instructions . . . . . . . . . 258

  1205.2 Pressure Testing . . . . . . . . . . . . . 258

  1205.3 Flushing . . . . . . . . . . . . . . . . . . . . 259

  1206.0 Pressure and Safety Devices . . . . 259

  1206.1 General. . . . . . . . . . . . . . . . . . . . . 259

  1206.2 Discharge Piping . . . . . . . . . . . . . 259

  1207.0 Heating Appliances and Equipment . . . . . . . . . . . . . . . . . . 259

  1207.1 General. . . . . . . . . . . . . . . . . . . . . 259

  1207.2 Boilers. . . . . . . . . . . . . . . . . . . . . . 259

  1207.3 Dual Purpose Water Heaters . . . . 259

  1207.4 Solar Heat Collector Systems. . . . 259

  1207.5 Heat Pumps . . . . . . . . . . . . . . . . . 259

  1208.0 Circulators and Pumps . . . . . . . . . 259

  1208.1 General. . . . . . . . . . . . . . . . . . . . . 259

  1208.2 Mounting. . . . . . . . . . . . . . . . . . . . 260

  1208.3 Sizing . . . . . . . . . . . . . . . . . . . . . . 260

  1209.0 Expansion Tanks . . . . . . . . . . . . . 260

  1209.1 General. . . . . . . . . . . . . . . . . . . . . 260

  1209.2 Installation . . . . . . . . . . . . . . . . . . 260

  1209.3 Closed-Type Tanks . . . . . . . . . . . 260

• CMC § 25.4 High relevance — show source text

  For SI units: 1 inch = 25.4 mm

  TABLE 1203.2

  WATER HEATERS

  1204.4 Nonpotable Water. Nonpotable water systems shall have a yellow background with black uppercase lettering, with the words: “CAUTION: NONPOTABLE WATER, DO NOT DRINK.” Each nonpotable system shall be identified to designate the liquid being conveyed, and the direction of normal flow shall be clearly shown. The minimum size of the letters and length of the color field shall comply with Table 1204.3.

  TABLE 1204.3

  MINIMUM LENGTH OF COLOR FIELD AND SIZE OF LETTERS

  For SI units: 1 inch = 25.4 mm

  1204.5 Location of Piping Identification. The background color and required information shall be indicated every 20 feet (6096 mm) but not less than once per room, and shall be visible from the floor level.

  1204.6 Flow Directions. Flow directions shall be indicated

  on the system.

  1204.7 Heat Transfer Fluid. Hydronic piping shall be identified with an orange background with black uppercase lettering, with the words “CAUTION: HEAT TRANSFER FLUID, DO NOT DRINK.” Each hydronic system shall be identified to designate the fluid being conveyed. The minimum size of the letters and length of the color field shall comply with Table 1204.3.

  Each outlet on the hydronic piping system shall be posted with black uppercase lettering as follows:

  “CAUTION: HEAT TRANSFER FLUID, DO NOT DRINK.”

  1204.8 Identification of Chemical Additives. In systems where chemical additives are used, documentation including the following information shall be readily accessible and maintained onsite:

  (1) Concentrations

  (2) Maintenance requirements

  (3) Maintenance log

  (4) Material Safety Data Sheet (SDS)

  For SI units: 1000 British thermal units per hour = 0.293 kW

  1205.0 Installation, Testing, and Inspection.

  1205.1 Operating Instructions. Operating and maintenance information shall be provided to the building owner. 1205.2 Pressure Testing. System piping and components shall be tested with a pressure of not less than one and one-half times the operating pressure but not less than 100 psi (689 kPa). Piping shall be tested with water or air except that plastic pipe

  258 2025 CALIFORNIA MECHANICAL CODE

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  HYDRONICS

  shall not be tested with air. Test pressures shall be held for a period of not less than 30 minutes with no perceptible drop in pressure. These tests shall be made in the presence of the Authority Having Jurisdiction.

  Exceptions: (1) For PEX, PP-R, PP-RCT, PEX-AL-PEX, PE-RT, and PEAL-PE piping systems, testing with air shall be permitted where authorized by the manufacturer’s instructions for the PEX, PP-R, PP-RCT, PEX-AL-PEX, PE-RT, and PE-ALPE pipe and fittings products, and air testing is not prohibited by applicable codes, laws, or regulations outside this code.

• CMC § 1201.5 High relevance — show source text

  1201.5 Return-Water Low-Temperature

  Protection . . . . . . . . . . . . . . . . . . . 257

  1201.6 Heat Transfer Fluid Quality. . . . . . 257

  1201.7 Heat Emitters . . . . . . . . . . . . . . . . 257

  1201.8 Mechanical Devices . . . . . . . . . . . 257

  1201.9 Flexible Connectors . . . . . . . . . . . 257

  1201.10 Freeze Protection . . . . . . . . . . . . . 257

  Table 1201.10 Percent Glycol Mixtures . . . . . . . . 257

  1202.0 Protection of Potable Water

  Supply. . . . . . . . . . . . . . . . . . . . . . 257

  1202.1 Prohibited Sources . . . . . . . . . . . . 257

  1202.2 Chemical Injection . . . . . . . . . . . . 257

  1202.3 Compatibility . . . . . . . . . . . . . . . . . 258

  1203.0 Capacity of Heat Source. . . . . . . . 258

  1203.1 Heat Source . . . . . . . . . . . . . . . . . 258

  1203.2 Dual Purpose Water Heaters . . . . 258

  Table 1203.2 Water Heaters . . . . . . . . . . . . . . . 258

  1203.3 Tankless Water Heaters . . . . . . . 258

  1204.0 Identification of Potable and

  Nonpotable Water Systems . . . . . 258

  1204.1 General. . . . . . . . . . . . . . . . . . . . . 258

  1204.2 Color and Information . . . . . . . . . . 258

  1204.3 Potable Water. . . . . . . . . . . . . . . . 258

  1204.4 Nonpotable Water. . . . . . . . . . . . . 258

  2025 CALIFORNIA MECHANICAL CODE

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  TABLE OF CONTENTS

  Table 1204.3 Minimum Length of Color Field and Size of Letters. . . . . . . . 258

  1204.5 Location of Piping Identification . . . 258

  1204.6 Flow Directions . . . . . . . . . . . . . . . 258

  1204.7 Heat Transfer Fluid. . . . . . . . . . . . 258

  1204.8 Identification of Chemical

  Additives . . . . . . . . . . . . . . . . . . . . 258

  1205.0 Installation, Testing, and Inspection . . . . . . . . . . . . . . . . . . . 258

  1205.1 Operating Instructions . . . . . . . . . 258

  1205.2 Pressure Testing . . . . . . . . . . . . . 258

  1205.3 Flushing . . . . . . . . . . . . . . . . . . . . 259

  1206.0 Pressure and Safety Devices . . . . 259

• CMC § 1310.8.3 High relevance — show source text

  Change in direction . . . . . . . . . . . . . . . . . . . . . 1310.8.3

  Concealed location . . . . . . . . . . . . . . . . . . . . . . . 1310.3

  Detection of leaks . . . . . . . . . . . . . . . . . . . . . . . . 1313.4

  Electrical bonding and grounding. . . . . . . . . . . . . 1311.0

  Inspection and testing . . . . . . . . . . . . . . 1303.0, 1313.0

  Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1310.0

  Interconnections . . . . . . . . . . . . . . . . . . . . . . . . . 1308.2

  Joints and fittings . . . . . . . . . . . . . . 1308.4.4–1308.4.8,

  1313.2.1, 1313.2.2

  Materials. . . . . . . . . . . . . . . . . . . . . . . . 1308.4, D 109.0

  Obstruction of flow. . . . . . . . . . . . . . . . . . . . . . . 1310.12

  Pressure regulators . . . . . . . . . . . . . . . . . . . . . . 1308.14

  Purging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1313.6 Sizing . . . . . . . . . . . . . 1308.3, 1314.0, 1315.0, D 108.0, Table 1315.2(1)–Table 1315.2(36) Supports. . . . . . . . . . . . . . . . 1310.3.5, Table 1310.3.5.1

  Underground

  installations . . . . . . . . 1308.4.2.4, 1308.4.3.4, 1310.0,

  D 101.2, D 109.3, D 110.3

  Venting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1308.6.4

  FUEL GAS TUBING

  Cathodic protection . . . . . . . . . . . . . . . . . . . . . . D 105.0 Change in direction . . . . . . . . . . . . . . . . . . . . . 1310.8.3

  Concealed location . . . . . . . . . . . . . . . . . . . . . . . 1310.4

  Detection of leaks . . . . . . . . . . . . . . . . . . . . . . . . 1313.4

  Electrical bonding and grounding. . . . . . . . . . . . . 1311.0 Inspection and testing . . . . . . . . . . . . . . 1303.0, 1313.0

• CMC § 1308.4.2.4 High relevance — show source text

  Underground

  installations . . . . . . . . 1308.4.2.4, 1308.4.3.4, 1310.0,

  D 101.2, D 109.3, D 110.3

  Venting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1308.6.4

  FUEL GAS TUBING

  Cathodic protection . . . . . . . . . . . . . . . . . . . . . . D 105.0 Change in direction . . . . . . . . . . . . . . . . . . . . . 1310.8.3

  Concealed location . . . . . . . . . . . . . . . . . . . . . . . 1310.4

  Detection of leaks . . . . . . . . . . . . . . . . . . . . . . . . 1313.4

  Electrical bonding and grounding. . . . . . . . . . . . . 1311.0 Inspection and testing . . . . . . . . . . . . . . 1303.0, 1313.0

  Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1310.0

  Interconnections . . . . . . . . . . . . . . . . . . . . . . . . . 1308.2

  Joints and fittings . . . . . . . . . . . . . . 1308.4.4–1308.4.8,

  1313.2.1, 1313.2.2

  Materials. . . . . . . . . . . . . . . . . . . . . . . . 1308.4, D 109.0

  Obstruction of flow. . . . . . . . . . . . . . . . . . . . . . . 1310.12

  Purging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1313.6 Sizing . . . . . . . . . . . . . 1308.3, 1314.1, 1315.0, D 108.0,

  Table 1315.2(1)–Table 1315.2(36)

  Supports. . . . . . . . . . . . . . . . 1310.3.5, Table 1310.3.5.1

  Underground installations . . . . . . . . . . . . . . 1308.4.2.4,

  1308.4.3.4, 1310.1,

  D 101.2, D 109.3, D 110.3

  Venting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1308.6.4

  FURNACES

  Approximate gas input . . . . . . . . . . . . . . Table 1308.3.1

  Automatic control required . . . . . . . . . . . . . . . . . . 608.6

• CMC § 312.0 Medium relevance — show source text

  312.0 Plumbing Connections. 312.1 General. Water supply, sanitary drainage, and backflow protection shall be in accordance with the California Plumbing Code .

  313.0 Hangers, Supports, and Anchors. 313.1 General. Piping, tubing, appliances, and appurtenances shall be supported in accordance with this code, the manufacturer’s installation instructions, and in accordance with the Authority Having Jurisdiction. Seismic restraints shall be in accordance with the building code. 313.2 Material. Hangers, supports, and anchors shall be of sufficient strength to support the weight of the pipe or tubing and its contents. Piping or tubing shall be isolated from incompatible materials.

  313.3 Suspended Piping. Suspended piping or tubing shall be supported at intervals not to exceed those shown in Table 313.3.

  313.4 Alignment. Piping or tubing shall be supported in such a manner as to maintain its alignment and prevent sagging.

  313.5 Underground Installation. Piping or tubing in the ground shall be laid on a firm bed for its entire length; where other support is otherwise provided, it shall be approved in accordance with Section 302.0.

  313.6 Hanger Rod Sizes. Hanger rod sizes shall be not smaller than those shown in Table 313.6.

  TABLE 313.6

  HANGER ROD SIZES

  PIPE AND TUBE SIZE (inches)	ROD SIZES (inches)
  1⁄2 - 4	3⁄8
  5 - 8	1⁄2
  10 - 12	5⁄8

  For SI units: 1 inch = 25.4 mm

  313.7 Gas Piping. Gas piping shall be supported by metal straps or hooks at intervals not to exceed those shown in Table 1310.3.5.1.

  314.0 Balancing.

  314.1 General. Heating, ventilating, and air-conditioning systems (including hydronic systems) shall be balanced in accordance with one of the following methods:

  TABLE 313.6

  HANGER ROD SIZES

  (1) AABC National Standards for Total System Balance

  (2) ACCA Manual B

  (3) ASHRAE 111

  (4) NEBB Procedural Standards for Testing Adjusting Balancing of Environmental Systems

  (5) SMACNA HVAC Systems Testing, Adjusting, and Balancing

  315.0 Louvers in Hurricane Prone Regions.

  315.1 General. Louvers located in areas within hurricane prone regions that are within 1 mile (2 km) of the coastal mean high water line where the basic wind speed is 110 miles per hour (mi/h) (49.2 m/s) or more; or portions of hurricane-prone regions where the basic wind speed is 120 mi/h (53.6 m/s) or more; or Hawaii, shall be tested in accordance with Section 315.1.1 and Section 315.1.2.

  315.1.1 Testing. Louvers that protect air intake or exhaust openings shall be tested in accordance with AMCA 550 for resistance to wind-driven rain.

  315.1.2 Impact Resistance Test. Upon request by the Authority Having Jurisdiction, louvers protecting intake and exhaust ventilation ducts that are not fixed in the

• CMC § 220.0 Medium relevance — show source text

  Recycled . . . . . . . . . . . . . . . . . . . . . . . . 220.0, 1104.8.2 Refrigerant designation, definition . . . . . . . . . . . . 220.0 Requirements for . . . . . . . . . . . . . . . . . . . . . . . . . 1104.0 Safety classification, definition . . . . . . . . . . . . . . . 220.0

  Storage of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1105.12

  Types used . . . . . . . . . . . . 1102.3, 1104.8, Table 1102.3

  Zeotropic, definition. . . . . . . . . . . . . . . . . . . . . . . . 228.0

  REFRIGERATION EQUIPMENT

  Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1105.3

  Coils . . . . . . . . . . . . . . . . . 310.6, 903.2.6, 904.8, 905.7

  Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1108.0

  Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1115.0

  Illumination and

  service receptacles . . . . . . . . . . . . . . . . . . . . . 1105.4

  Location of . . . . . . . . . . . . . . . . . . . . . . . 1104.2, 1105.0

  Refrigeration recovery . . . . . . . . . . . . . . . . . . . . . 1101.2 Supports and anchorage. . . . . . . . . . . . . . . . . . . 1105.2

  Testing of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1116.0 Valves. . . . . . . . . (see Valves, for refrigeration systems)

  REFRIGERATION

  MACHINERY ROOMS

  A2L. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1106.11

  B2L. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1106.11

  Definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220.0

  General . . . . . . . . . . . . . . . . . . . . . . . . . . 1106.0, 1106.2

  REFRIGERATION SPACES

• CMC § 1215.0 Medium relevance — show source text

  HYDRONIC SPACE HEATING . . . . . . . . . . . . . . . . . 1215.0

  HYDRONICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . Chapter 12

  Auxiliary systems . . . . . . . . . . . . . . . . . . . . . . . . 1220.0

  Appliances and equipment . . . . . . . . . . . . . . . . . 1207.0

  Boilers . . . . . . . . . . . . . . . . . . 1207.2, 1207.2.1, 1207.2.2

  Circulators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1208.0

  Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1221.7

  Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210.0

  Embedded piping and joints . . . . . . . . . . . . . . . . 1221.2

  Expansion tanks . . . . . . . . . . . . . . . . . . . . . . . . . 1209.0

  Hangers and supports. . . . . . . . . . . . . . . . . . . . . 1210.3

  Heat emitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1201.7

  Heat pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1207.5

  Heat sources . . . . . . . . . . . . . . . . . . . . . . . . . . . 1203.1

  Heat transfer fluid . . . . . . . . . . . . . . . . . . 1201.3, 1204.7

  Identification of piping . . . . . . . . . . . . . . . . . . . . . 1204.0

  Installation . . . . . . . . . . . . . . . . . . . . . . . 1205.0, 1221.0

  Insulation. . . . . . . . . 1201.2, 1217.8.2, 1217.10, 1220.4.7

  Joints and connections . . . . . . . . . . . . . . . . . . . . 1211.0

  Materials . . . . . . . . . . . . . . . . . . . . 1210.0, Table 1210.1

  Protection of potable water supply . . . . . . . . . . . 1202.0

  Radiant heating and cooling . . . . . . . . . . . . . . . . 1217.0

  Snow melt systems . . . . . . . . . . . . . . . . 1220.4, 1220.0,

  1217.8.2, Table 1220.4.2

• CMC § 801.0 Medium relevance — show source text

  2025 CALIFORNIA MECHANICAL CODE 503

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  APPENDIX E

  CERTIFICATE OF ACCEPTANCE MECH-5A	Col2
  Air Economizer Controls Acceptance (Page 3 of 3)	Air Economizer Controls Acceptance (Page 3 of 3)
  Project Name/Address:	Project Name/Address:
  System Name or Identification/Tag:	System Location or Area Served:

  C.	PASS/FAIL Evaluation (check one):
  	PASS: AllConstruction Inspection responses are complete andTesting Results responses are “Pass.”
  	FAIL: AnyConstruction Inspection responses are incomplete_OR_ there is one or more “Fail” responses inTesting Results section. Provide explanation below. Use and attach additional pages if necessary.

  504 2025 CALIFORNIA MECHANICAL CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  APPENDIX E

  CERTIFICATE OF ACCEPTANCE MECH-6A	Col2
  Demand Control Ventilation Systems Acceptance (Page 1 of 3)	Demand Control Ventilation Systems Acceptance (Page 1 of 3)
  Project Name/Address:	Project Name/Address:
  System Name or Identification/Tag:	System Location or Area Served:

  Enforcement Agency:	Permit Number:
  Note: Submit one Certificate of Acceptance for each system that must demonstrate compliance.	Enforcement Agency Use: Checked by/Date

  FIELD TECHNICIAN’S DECLARATION STATEMENT

  • I certify under penalty of perjury the information provided on this form is true and correct.

  • I am the person who performed the acceptance requirements verification reported on this Certificate of Acceptance (Field Technician).

  • I certify that the construction/installation identified on this form complies with the acceptance requirements indicated in the plans and specifications approved by the enforcement agency, and conforms to the applicable acceptance requirements and procedures specified in Section E 801.0 through Section E 806.0. • I have confirmed that the Installation Certificate(s) for the construction/installation identified on this form has been completed and is posted or made available with the building permit(s) issued for the building.	Col2	Col3
  Company Name:	Company Name:	Company Name:
  Field Technician’s Name:	Field Technician’s Name:	Field Technician’s Signature:
  	Date Signed:	Position with Company (Title):

• CMC § 0.293 Medium relevance — show source text

  For SI units: 1 metric ton = 1000 kg, 1000 British thermal units per hour = 0.293 kW

  2025 CALIFORNIA MECHANICAL CODE 527

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  APPENDIX E

  CERTIFICATE OF ACCEPTANCE MECH-14A	Col2
  Distributed Energy Storage DX AC Systems Acceptance (Page 3 of 3)	Distributed Energy Storage DX AC Systems Acceptance (Page 3 of 3)
  Project Name/Address:	Project Name/Address:
  System Name or Identification/Tag:	System Location or Area Served:

  	PASS: All Construction Inspection responses are complete and all Testing Results responses are “Pass.”
  	FAIL: AnyConstruction Inspection responses are incomplete_OR_ there is one or more “Fail” responses in Testing Results section. Provide explanation below. Use and attach additional pages if necessary.

  528 2025 CALIFORNIA MECHANICAL CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  APPENDIX E

  CERTIFICATE OF ACCEPTANCE MECH-15A	Col2
  Thermal Energy Storage (TES) System Acceptance (Page 1 of 3)	Thermal Energy Storage (TES) System Acceptance (Page 1 of 3)
  Project Name/Address:	Project Name/Address:
  System Name or Identification/Tag:	System Location or Area Served:

  Enforcement Agency:	Permit Number:
  Note: Submit one Certificate of Acceptance for each system that must demonstrate compliance.	Enforcement Agency Use: Checked by/Date

  FIELD TECHNICIAN’S DECLARATION STATEMENT

  • I certify under penalty of perjury the information provided on this form is true and correct.

  • I am the person who performed the acceptance requirements verification reported on this Certificate of Acceptance (Field Technician).

  • I certify that the construction/installation identified on this form complies with the acceptance requirements indicated in the plans and specifications approved by the enforcement agency, and conforms to the applicable acceptance requirements and procedures specified in Section E 801.0 through Section E 806.0. • I have confirmed that the Installation Certificate(s) for the construction/installation identified on this form has been completed and is posted or made available with the building permit(s) issued for the building.	Col2	Col3
  Company Name:	Company Name:	Company Name:
  Field Technician’s Name:	Field Technician’s Name:	Field Technician’s Signature:
  	Date Signed:	Position with Company (Title):

• CMC § 606.5 Medium relevance — show source text

  (3) Where analysis demonstrates shutoff would create a greater hazard.

  The HVAC system shall not be restarted again until all the dampers are reset and fully opened. 606.5 Corridor Dampers. Corridor dampers shall comply with the requirements of combination fire/smoke dampers in Section 606.4.

  606.6 Periodic Testing and Inspection. Testing and inspection of dampers shall be in accordance with the following:

  (1) Smoke dampers shall be tested in accordance with NFPA 105.

  (2) Fire dampers shall be tested in accordance with NFPA 80.

  (3) Combination fire/smoke dampers shall be tested in accordance with NFPA 80 and NFPA 105.

  606.7 Multiple Arrangements. Where size requires the use of multiple dampers, each damper shall be listed for use in multiple arrangements and installed in accordance with the manufacturer’s installation instructions.

  606.8 Access and Identification. Fire and smoke

  dampers shall be provided with an approved means of access large enough to allow inspection and maintenance of the damper and its operating parts. The access shall not affect the integrity of the fire-resistance-rated assembly. The access openings shall not reduce the fire-resistance rating of the assembly.

  Access shall not require the use of tools. Access doors in ducts shall be tight fitting and approved for the required duct construction. Access points shall be permanently identified on the exterior by a label with letters not less than [1] ⁄ 2 of an inch (12.7 mm) in height reading as one of the following:

  (1) Smoke Damper

  (2) Fire Damper

  (3) Fire/Smoke Damper

  606.9 Freedom from Interference. Dampers shall be installed in a manner to ensure positive closing or opening as required by function. Interior liners or insulation shall be held back from portions of a damper, its sleeve, or adjoining duct that would interfere with the damper’s proper operation. Exterior materials shall be installed so as to not interfere with the

  operation or maintenance of external operating devices needed for the function of the damper.

  606.10 Temperature Classification of Operating Ele- ments. Fusible links, thermal sensors, and pneumatic or electric operators shall have a temperature rating or classification as in accordance with the building code.

  607.0 Ventilating Ceilings.

  607.1 General. Perforated ceilings shall be permitted to be used for air supply within the limitations of this section. Exit corridors, where required to be of fire-resistive construction by the California Building Code, shall not have ventilating ceilings.

  607.1.1 [OSHPD 1, 1R, 2, 3, 4 & 5] Ventilating ceil- ings are not permitted in health facilities.

  607.2 Requirements. Ventilating ceilings shall comply with the following:

  (1) Suspended ventilating ceiling material shall have a Class 1 flame spread classification on both sides, determined in accordance with the building code. Suspended ventilating ceiling supports shall be of noncombustible materials.

  (2) Luminaires recessed into ventilating ceilings shall be of a type approved for that purpose.

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  142 2025 CALIFORNIA MECHANICAL CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.