Section 5.09 - Modifications to Chapter 9, Appliance, Equipment, and Accessory Installation(1) Delete sub-section 9.1.1* and replace it with the following: 9.1.1* Appliances, Equipment, and Accessories to be Approved.Board Required Product Acceptance. Only products and materials that meet the product acceptance requirements of 248 CMR 3.04(1): Board Required Product-acceptance may be utilized in gas fitting work in Massachusetts unless the Board has waived the necessity for product acceptance per 248 CMR 3.04(1)(h).
(2) Delete sub-section 9.1.1.1.(3) Delete sub-section 9.1.1.3 and replace with the following: 9.1.1.3 Unlisted Appliances, Equipment, and Accessories. Acceptance of unlisted gas appliances, equipment, and accessories shall require a variance by the Board.
(4) Delete sub-section 9.1.1.4.(5) Add a new sub-section 9.1.19.1 as follows: 9.1.19.1 Vent Lines.
(a) Vent lines shall be steel, wrought iron pipe, or corrugated stainless steel tubing (CSST). Vents shall be: 1.sized as specified in this section; and2.run to the outside of the building or structure using the shortest practical route and shall not be trapped or installed in a manner that restricts air flow.(b) Vent Lines shall be supported in accordance with subsection 7.2.5.(c) Vent lines that terminate outside a building or structure shall be located no less than: 1.four feet away from any building opening or air intake; and2.ten feet away from forced air intakes.(d) Vent lines that penetrate roofs and sidewalls shall be run through metallic sleeves that are sealed from the weather and insects, and: 1.extend no less than 18 inches above a roof surface when penetrating the roof or:2.terminate through the sidewall to a safe location.(e) CSST vent lines shall not penetrate roofs or sidewalls and shall transition to steel, wrought iron pipe no less than one foot inside the building or structure.(f) Appliance pressure regulators shall not be connected to a common manifold. TABLE 9.1.19.1
Minimum Schedule 40 Pipe Size/CSST for Venting of Gas Components
Gas Components | Maximum lengths of iron pipe or corrugated stainless steel tubing (CSST) from components to outside the building |
0 - 40 feet | 0 - 100 feet | 0 - 200 Feet |
Main Gas Pressure Regulator - Steel Pipe Size - CSST Size (Low Pressure Gas only) | ¾ inch IPS 30/31 EHD | 1 inch IPS 37 EHD | 1¼ inch IPS 46/48 EHD |
High & Low Gas Pressure Switches When Manifolded - Steel Pipe Size - CSST Size (Low Pressure Gas only) | ¾ inch IPS 30/31 EHD | 1 inch IPS 37 EHD | 1½ inch IPS 60/62 EHD |
Block and Bleed Valves (when used) - Steel Pipe Size - CSST Size (Low Pressure Gas only) | Full IPS Relief | Increase IPS/CSST one Size | Increase IPS/CSST two Sizes |
(6) Delete sub-section 9.1.22 and replace with the following: 9.1.22Installation Instructions.
(a) The licensee shall conform to the equipment manufacturer's specific requirements in completing an installation unless those requirements conflict with or are less stringent then this code.(b) The licensee shall also leave the manufacturer's installation, operating, and maintenance instructions in a location at the premises where they will be readily available for reference and guidance.(c) When required by the Inspector, a copy of the manufacturer's installation, operating, and maintenance instructions shall be provided within two working days prior to calling for a final Inspection. (7) Delete sub-section 9.1.23 and replace with the following: 9.1.23Carbon Monoxide Protection. No installation or replacement of a vented gas appliance shall be permitted unless a battery powered or electrically hard wired carbon monoxide detector is present on the same floor as the appliance or on the next adjacent floor when the appliance is located in a crawl space unless the appliance is located in a detached, uninhabitable garage. For all residential dwellings, a carbon monoxide detector must also be present on each habitable level of the dwelling. These requirements shall not be deemed to waive any additional requirements imposed by M.G.L. c. 148 § 26F½.
(8) Amend sub-section 9.2.1 by inserting the following at the end of the subsection: Sufficient clearance must also be provided to allow the total replacement of the appliance or equipment.
(9) Add a new sub-section 9.6.1.4 as follows: 9.6.1.4 General Requirements for Connectors.
(a) The maximum length of a connector shall not exceed 48 inches, however, this restriction shall not apply to connectors utilized for a gas appliance subject to the provisions of sub-section 9.6.1(4) or sub-section 9.6.1.1.(b) A connector shall not be used for gas pressure in excess of 0.5 PSIG (14" water column).(c) A connector shall not be re-used except when used for disconnecting and reconnecting the original gas equipment or appliance for servicing. (10) Add a new sub-section 9.6.3.5 as follows: 9.6.3.5 Flexible gas hoses used to connect portable and mobile industrial appliances shall not exceed a length of 20 feet.
(11) Amend sub-section 9.6.8 by inserting the following at the end of the subsection: Such piping shall also be installed in a manner not to interfere with the total replacement of the appliance or equipment.
Amended by Mass Register Issue 1275, eff. 12/5/2014.