Document ID: chunk:federal_register_of_legislation:F2019L00490:clause:2_10
Version: federal_register_of_legislation:F2019L00490
Segment Type: clause
Provision Reference: sch 2 cl 10
Character Range: 93842–96556

10  Specific requirements for multi-split outdoor units

Note: For multi‑split outdoor units, the relevant product classes are 18 to 21, "Air to air multi-split outdoor units (whether or not supplied or offered for supply as part of a multi-split system)".

 Each of these product classes covers only the multi‑split outdoor unit itself; the unit may be supplied or offered for supply in relation to any appropriate system of outdoor and indoor units (including a system with a single indoor unit).
 (1) This section applies in relation to all tests undertaken for the purposes of Part 3 and Part 5 of this Determination.
 (2) The test results for a multi-split outdoor unit are based on a multi‑split system. The outdoor unit model is to be tested using a representative combination of indoor units. The representative combination of indoor units must:
 (a) consist of units that are readily available for possible check-testing purposes; and
 (b) for a VRF type unit—not be less than the manufacturer's specified minimum number of indoor units; and
 (c) for a fixed head product—consist of a dedicated indoor unit for each refrigeration port on the outdoor unit; and
 (d) be one for which the ratio of:
 (i) the sum of the manufacturer's nominated rated capacities for the indoor units; and
 (ii) the manufacturer's nominated rated capacity for the outdoor unit;
  is equal to 1, or is as close as possible to 1 within the range of the manufacturer's specified connectable indoor units; and
 (e) be the same for all heating and cooling tests; and
 (f) be configured with a remote control for each indoor unit (unless the controls are integral to the indoor unit).
 (3) The documentation of the test must also specify:
 (a) the make and model number of each indoor unit; and
 (b) the rated capacity for each indoor unit when used in the representative combination; and
 (c) the configuration and test setup. Complete setup instructions, including but not limited to piping lengths and layouts, capacity fixing methods, refrigerant charge and system specifications must be included. This may take the form of a printout from the manufacturer's sales selection software.
Note: A representative indoor unit that is used for the purposes of this section might be the indoor unit of a single‑split system which has an energy rating label pursuant to section 28 of this Determination. In such a case, the rated capacity for the purposes of subparagraph (2)(d)(i) and paragraph (3)(b) of this section might differ from the rated capacity as indicated on the single‑split system's energy rating label. This is because the rated capacity of an indoor unit can vary depending on the outdoor unit with which it is combined.