Okla. Admin. Code § 748:20-6-19

Current through Vol. 42, No. 3, October 15, 2024

Section 748:20-6-19 - IRC[®] 2018 Chapter 14 Heating and Cooling Equipment and Appliances

Chapter 14 of the 2018 IRC® is adopted with the following modifications:

(1) Section M1401.3 Equipment and appliance sizing. This section has been modified to add a requirement for all new residential one- and two-family dwellings and townhouses to provide documentation showing compliance with this section to the authority having jurisdiction at the time a mechanical permit is required. This section has been modified to read: M1401.3 Equipment and appliance sizing. Heating and cooling equipment and appliances shall be sized in accordance with ACCA Manual S or other approved sizing methodologies based on building loads calculated in accordance with ACCA Manual J or other approved heating and cooling calculation methodologies. Documentation demonstrating compliance with this section is to be provided to the authority having jurisdiction at the time a mechanical permit is required on new one- and two-family dwellings and townhouses. Exception: Heating and cooling equipment and appliance sizing shall not be limited to the capacities determined in accordance with Manual S where either of the following conditions applies:

(A) Item 1: The specified equipment or appliance utilizes multistage technology or variable refrigerant flow technology and the loads calculated in accordance with the approved heating and cooling calculation methodology are within the range of the manufacturer's published capacities for that equipment or appliance.

(B) Item 2: The specified equipment or appliance manufacturer's published capacities cannot satisfy both the total and sensible heat gains calculated in accordance with the approved heating and cooling calculation methodology and the next larger standards size unit is specified.

(2) Section M1402.1 General. This section has been modified to add another referenced standard "UL/CSA 60335-2-40" as an option for conformity for electrical furnaces This section has been modified to read: M1402.1 General. Oil-fired central furnaces shall conform to ANSI/UL 727. Electric furnaces shall conform to UL 1995 or UL/CSA 60335-2-40.

(3) Section 1403.1 Heat pumps. This section has been modified to update a referenced standard by removing the ANCE sponsorship of the standard. This section has been modified to read: M1403.1 Heat pumps. Electric heat pumps shall be listed and labeled in accordance with UL 1995 or UL/CSA 60335-2-40.

(4) Section M1411.8 Locking access port caps. This section has been modified to specify the section will apply to new and retrofit outdoor condensers only. This section has been modified to read: M1411.8 Locking access port caps. Refrigerant circuit access ports located outdoors shall be fitted with locking-type tamper-resistant caps or shall be otherwise secured to prevent unauthorized access. Shall apply to new and retrofit outdoor condensers only.

(5) Section M1412.1 Approval of equipment. This section has been modified to update a referenced standard by removing the ANCE sponsorship of the standard. This section has been modified to read: M1412.1 Approval of equipment. Absorption systems shall be installed in accordance with the manufacturer's instructions. Absorption equipment shall comply with UL 1995 or UL/CSA 60335-2-40.

(6) Section M1413.1 General. This section has been modified to update a referenced standard by removing the ANCE sponsorship of the standard. This section has been modified to read: M14013.1 General. Evaporative cooling equipment and appliances shall comply with UL 1995 or UL/CSA 60335-2-40 and shall be installed:

(A) Item 1: In accordance with the manufacturer's instructions.

(B) Item 2: On level platforms in accordance with Section M1305.1.3.1.

(C) Item 3: So that openings in exterior walls are flashed in accordance with Section R703.4.

(D) Item 4: So as to protect the potable water supply in accordance with Section P2902.

(E) Item 5: So that the air intake opening locations are in accordance with Section R303.5.1.

Okla. Admin. Code § 748:20-6-19

Adopted by Oklahoma Register, Volume 39, Issue 24, September 1, 2022, eff. 9/14/2022