scope:

The scope of pumps included in the ER Program are limited to clean water circulator pump types CP1 (wet rotor), CP2 (dry rotor two-piece), and CP3 (dry rotor three-piece) as defined in Section 41.5.1.5.1 of this document. Clean water circulator pump means a circulator pump that is designed for use in pumping water with a maximum non-absorbent free solid content of 0.016 pounds per cubic foot (0.25 kilograms per cubic meter), and with a maximum dissolved solid content of 3.1 pounds per cubic foot (50 kilograms per cubic meter), provided that the total gas content of the water does not exceed the saturation volume, and disregarding any additives necessary to prevent the water from freezing at a minimum of 14 °F (-10 °C).

Purpose

The purpose of the Hydraulic Institute Circulator Pump Energy Rating Program Guideline (hereinafter referred to as the "Program Guideline") is to define the requirements to participate in and list circulator pumps in the Hydraulic Institute Energy Rating Program (hereinafter referred to as the "ER Program"). The Program Guideline establishes the method for testing circulator pumps to determine an Energy Rating value, and requirements for listing circulator pumps in the ER Program.