ASHRAE-90.1-2022- - Page 077

Extracted Content

FL.IP = full-load kW /ton value from Table 6.8.1-3 or 6.8.1-16

FL.IP adj = maximum full-load kW /ton rating, adjusted for nonstandard conditions

IPLV. IP = IPLV. IP value from Table 6.8.1-3 or 6.8.1-16

PLV . IP adj = maximum NPLV. IP rating, adjusted for nonstandard conditions

A = 0.00000014592 × (LIFT) [4] - 0.0000346496 × (LIFT) [3 ] + 0.00314196 × (LIFT) [2] - 0.147199 × (LIFT) + 3.93073

B = 0.0015 × LvgEvap + 0.934

LIFT = LvgCond – LvgEvap

LvgCond = full-load condenser leaving liquid temperature, °F

LvgEvap = full-load evaporator leaving liquid temperature, °F

The FL . IP adj and PLV . IP adj values are only applicable for centrifugal chilling packages meeting all of the following full-load design ranges:

• 36.00°F  LvgEvap  70.00°F and

• 60.00°F  LvgCond  135.00°F and

• 20.00°F  LIFT  80.00°F

Manufacturers shall calculate the FL.IP adj and PLV.IP adj before determining whether to label the chiller per Section 6.4.1.5. Compliance with Standard 90.1-2007, 2010, 2013, 2016, 2019, 2022, or combinations thereof, shall be labeled on chilling packages within the scope of the standard.

Centrifugal chilling packages designed to operate outside of these ranges are not covered by this standard.

6.4.1.2.2 Chilling Packages Employing Freeze-Protection Liquids. Electrically operated chilling packages that employ freeze-protection liquids in any heat exchanger with an application cooling duty evaporator liquid leaving temperature or heating operation source liquid temperature above 32.00°F shall show efficiency compliance in accordance with the applicable requirements in Sections 6.4.1.2.2.1 through 6.4.1.2.2.4. Absorption chilling packages with freeze-protection liquids are exempt from the efficiency requirements listed in Table 6.8.1-3 and shall only show compliance when applied with water.

6.4.1.2.2.1 All electrically operated cooling-only air-cooled and electrically operated positive displacement liquid-cooled chilling packages shall show compliance with the cooling efficiency requirements listed in Table 6.8.1-3when applied within the operating limits of AHRI 550/590 at AHRI 550/590 standard rating conditions when tested or rated with water used as a heat transfer liquid.

6.4.1.2.2.2 All liquid-cooled electrically operated cooling-only centrifugal chilling packages shall show compliance with the cooling efficiency requirements listed in Table 6.8.1-3 when applied within the operating limits defined in AHRI 550/590 at the application rating conditions for a cooling efficiency, adjusted using Kadj as defined in Section 6.4.1.2.1, when tested or rated with water used as a heat transfer liquid.

6.4.1.2.2.3 All electrically operated air source and electrically operated positive displacement liquidsource heat pump and heat recovery chilling packages shall show compliance with the cooling efficiency requirements listed in Table 6.8.1-16 when applied within the operating limits of AHRI 550/590 at AHRI 550/ 590 standard rating conditions when tested or rated with water used as a heat transfer liquid. They also shall show compliance with the heating efficiency requirements listed in Table 6.8.1-16 at one of the AHRI 550/590 standard heating rating conditions when tested or rated with water used as a heat transfer liquid. Heating-only chilling packages shall meet the efficiency requirements at one of the AHRI 550/590 heating liquid temperature rating conditions and are not required to meet the cooling efficiency requirements of Table 6.8.1-16.

6.4.1.2.2.4 All liquid-source centrifugal heat pump and heat recovery chilling packages shall show compliance with the cooling efficiency requirements listed in Table 6.8.1-16 when applied within the operating limits defined in AHRI 550/590 at the application rating conditions for cooling efficiency, adjusted using Kadj as defined in Section 6.4.1.2.1, when tested or rated with water. They also shall show compliance with the heating efficiency requirements in Table 6.8.1-16 at one of the AHRI 550/590 standard rating conditions when tested or rated with water used as a heat-transfer liquid. Heating-only chilling packages shall meet the heating efficiency requirements at one of the AHRI 550/590 heating liquid temperature rating conditions and are not required to meet the cooling efficiency requirements of Table 6.8.1-16.

6.4.1.3 Equipment not Listed. Equipment not listed in the tables referenced in Sections 6.4.1.1 and 6.4.1.2 may be used.

ANSI/ASHRAE/IES Standard 90.1-2022 (I-P) 75