Part 28Gas heating ductwork

Part 28—Gas heating ductwork

20 Prescribed activity

(a) decommissioning gas heating ductwork that is connected to a ducted gas heater; and

(b) installing a product specified in subclause (2); and

(c) in the case of a category 28A product, constructing and installing the product—

(i) in accordance with the requirements set out in AS 4254.1; and

(ii) using fittings that—

Sch. 2 cl. 20(1)(c) (ii)(A) amended by S.R. No. 171/2021 reg. 8(3).

(A) for a building classified as a Class 1 or 10 building under Part A6 of Volume One of the Building Code, achieve at least the R-value specified by Table 3.12.5.2 of Volume Two of the Building Code; and

Sch. 2 cl. 20(1)(c) (ii)(B) amended by S.R. No. 171/2021 reg. 8(3).

(B) for a building classified as a Class 2 to 9 building under Part A6 of Volume 1 of the Building Code, achieve the minimum total R-value specified by Specification J5.2b of Volume One of the Building Code.

(d) in the case of a category 28B product, constructing and installing the product—

(i) in accordance with the requirements set out in AS 4254.2; and

(ii) using fittings that—

Sch. 2 cl. 20(1)(d) (ii)(A) amended by S.R. No. 171/2021 reg. 8(3).

(A) for a building classified as a Class 1 or 10 building under Part A6 of Volume One of the Building Code, achieve at least the R-value specified by Table 3.12.5.2 of Volume Two of the Building Code; and

Sch. 2 cl. 20(1)(d) (ii)(B) amended by S.R. No. 171/2021 reg. 8(3).

(B) for a building classified as a Class 2 to 9 building under Part A6 of Volume 1 of the Building Code, achieve the minimum total R-value specified by Specification J5.2b of Volume One of the Building Code.

(a) a product listed on the ESC register as belonging to a product category whose category number is specified in column 1 of Table 28.1;

(b) an unlisted product that complies with the criteria specified in column 2 of an item in Table 28.1.

Table 28.1—Product categories

| 28A | Flexible ductwork that—<br> (a) is tested and certified by an approved laboratory as complying with AS 4254.1 and labelled in accordance with that Standard; and<br> (b) is insulated using bulk insulation that is certified by an accredited body or approved laboratory as complying with AS/NZS 4859.1 and achieves the specified minimum R-value for that ductwork when measured in accordance with that Standard. | | 28B | Rigid ductwork that—<br> (a) is tested and certified by an approved laboratory as complying with AS 4254.2; and<br> (b) is insulated using bulk insulation that is certified by an accredited body or approved laboratory as complying with AS/NZS 4859.1 and achieves the specified minimum R-value for that ductwork when measured in accordance with AS/NZS 4859.1; and<br> (c) is longitudinally labelled at intervals of not more than 1·5 meters, in characters that are clearly legible and at least 18 mm high stating—<br> (i) the duct manufacturer's or duct assembler's name; and<br> (ii) the diameter of the duct core; and<br> (iii) the R-value of the bulk insulation; and<br> (iv) that the ductwork complies with AS 4254.2. |