Certification Program
Find AHRI Certified^® Water Chilling Packages Using Vapor Compression Cycle

---

Resources

Related Standard: ANSI/AHRI Standard 550/590
Product-Specific Operations Manual
General Operations Manual
Chillers program flyer (English)
Chillers program flyer (Chinese)
WCCL Certification Program Compliance Requirements

Facility Approval Documents:

• Form WCCL-FA1: Application for Facility Approval
  
• Form WCCL-FA2: Personnel Experience Questionnaire
  
• Form WCCL-FA3: Facility and Equipment Questionnaire
  
• Form WCCL-FA4: Calibration Summary
  

---

Program Scope
This program applies to Water-Cooled Water-Chilling Packages as follows:

Water-Cooled Water-Chilling Packages. A factory-made and prefabricated assembly
(not necessarily shipped as one package) of one (1) or more compressors, condensers and evaporators, with interconnections and accessories including controls, designed for the purpose of cooling water. It is a machine specifically designed to make use of a vapor compression refrigeration cycle to remove heat from water and reject the heat to a cooling medium, water.

Custom Unit. A unit that is not listed, neither in a catalog, specification sheet nor
generally advertised for sale, that is a single instance special order in which customer requested components or additions that change the performance such that ratings can no longer be obtained by utilizing the Participant’s Selection Rating Software. AHRI must be informed of any custom unit request prior to unit production.

Field Trial Unit. A unit that is produced and provided to a customer, often at a reduced cost, for the purpose of gathering data on potential new products. These units are intended to transition into regular production should the field trial be successful. AHRI shall be informed of any new model designations that shall be designed and released for field trial. Once approved by AHRI, this trial shall occur outside of the scope of the program. Field Trial Units shall not be certified and shall not be listed in the AHRI Directory of Certified Product Performance (Directory). The number of Field Trial Units produced shall not exceed 2% of a Participant’s annual number of WCCL shipment based on statistical reporting.

Modular Chiller. A modular chiller is a unit that is made up of multiple chillers that can function individually or as a single unit. Modular chillers shall be certified provided that the
chiller is rated and listed as a complete unit with a specific combination of modules and with a total capacity that is within the scope of the program. In this case, complete units  consisting of multiple modules must be tested as a single complete unit as part of the certification program.


Program Scope Inclusions

60 Hz WCCL Product Inclusions

• All compressor types;
• Chillers rated between 0 and 3000 tons [10,550 kW] tons at Standard Rating Conditions;
• Hermetic & open type, electric motor driven;
• Units selected for use within the range of Application Rating Conditions as per the Standard (part-load performance no less than 25% of the rated full load capacity);
• Voltages up to 15,000 volts; and
• Positive Displacement Units intended for use with glycol or other secondary coolant for freeze protection with a leaving chilled fluid temperature above 32°F (0°C) are certified when tested with water at Standard Rating Conditions.

50 Hz WCCL Product Inclusions

• Centrifugal & screw compressor chillers with continuous unloading;
• Chillers rated between 200 and 3000 tons [703-10,550 kW] at AHRI Standard Rating Conditions;
• Hermetic & open type, electric motor driven;
• Units selected for use within the range of application rating conditions as per the Standard (part-load performance no less than 25% of the rated full load capacity);
• Voltages up to 15,000 volts; and
• Positive Displacement Units intended for use with glycol or other secondary coolant for freeze protection with a leaving chilled fluid temperature above 32°F (0°C) are certified when tested with water at Standard Rating Conditions.

Program Scope Exclusions
The following are exclusions for 50 Hz and 60 Hz WCCL products:

• Condenserless chillers;
• Evaporatively-cooled chillers;
• Chillers that are not electrically driven;
• Chillers with motors not supplied with the unit by the Participant; and
• Heat recovery & heat pump ratings are not certified; however, Participants may elect to certify these chillers in the cooling mode with this option turned off.

Certified Ratings

Standard Rating Conditions

• Full load capacity, ton [kW]
• Full load Energy Efficiency, EER [COP]
• Water Pressure Drop, ft water [kPa]
• Integrated Part Load Value (IPLV), EER [COP]

Operating Map Conditions

• Full load capacity, ton [kW]
• Full load Energy Efficiency, EER [COP]
• Water Pressure Drop, ft water [kPa]

Selection of Random Operation Point

• In addition to the specific standard rating conditions noted in the latest edition of AHRI Standard 550/590, AHRI will select a random point within the full load application rating conditions, and the limits of Section 5 of AHRI Standard 550/590, for verification. This random operating point will be selected to allow AHRI to certify the operating map conditions at which the chiller can be run. This point will not be communicated to the participant until the Laboratory Representative is witnessing the test.

Related Resources
The ASHRAE 90.1 performance levels for Chillers can be found in ASHRAE 90.1-2007, Energy Standard for Buildings Except Low-Rise Residential Buildings (I-P and SI) addenda m. Please note the implementation dates, provided in the tables, when utilizing this information.

---

The rules and procedures for obtaining and maintaining certification are detailed in the Resources section above. The specific Standard listed above details the technical requirements for rating and publishing your product performance, the AHRI General Operations Manual (OM) details the program operational rules that are generic to all of AHRI’s certification programs and lastly, the Product-specific Operations Manual provides the operational rules that are specific to this program along with the required documents and fees. Please ensure that you are familiar with the latest rules and procedures for this program.