ANSI/AHRI 470:2006 pdf download.Performance Rating of Desuperheater/WaterHeaters.
5.6 Tokrances. To comply with this standard, published Nct Heating Capacity shall be based on data obtained in accordance
with (he provisions of this standard, and shall be such that any preduction unit selected at random and tested in accordance with
this standard shall have a Net Heating Capacity not less than 95% of the Published Rating. a water pressure drop not more than
110% of the published water pressure drop and a refrigerant pressure drop not more than 110% of the published refrigerant
pressure drop.
Section 6. Minimum Data Requirements for Published Ratings
6.1 Minimum Data Requirements forPublishedRalings. Asa minimum. Published Ratings shall include all Standard Ratings.
All claims to ratings within the scope of this standard shall include the statement “Rated in accordance with AFIRI Standard 470.”
All claims to ratings outside the scope of this standard shall include the statement “Outside the scope of AHRI Standard 470.”
Wherever Application Ratings are published or printed, they shall include a statement of the conditions at which the ratings apply.
6.2 Published Raingx. Published Ratings shall state all the pertinent operating conditions and shall include the following:
a, Refrigerant designationN per ANSIIASHRAE Standard 34 with Addenda
b. Entering refrigerant empcrature. “F I°CI
c. Entering refrigerant pressure, psig lkPa gagel
d. Net Heating Capacity. Btu/h [WI
e. Water flow rate. gpm [Usi
f. Water pressure drop, psi or ft 1IO IkPaI
g. Refrigerant side pressure drop. psi IkPaI
h. Refrigerant mass flow rate. lb/h [kg/si
i. Fouling Factor (water-side). ft2- h “F/Btu 1m2 “C/WI
Plus at least one of the ftllowing:
j. Entering water temperature. “F [°CJ
k. Leaving water temperature. “F [“Ci
6.3 Published Ratings shall be accompanied by the following information:
a. Design pressures for water-side and refrigerant-side. psig [kPa gage I
b. Minimum water flow rate. gpm [Us]. at minimum entering water temperature. “F [°CJ
c. Maimurn recommended flow rate, gpm I lJsi
d. If only clean tube ratings arc published, a statement shall be included to contact the manufacturer if fouled tube ratings are required.
7.1 Marking and Nameplate Data. As a minimum, each DcsuperheaterfWater Heater shall have the following information shown in a conspicuous place:
a. Name of manufacturer
h. Manufacturers model number
c. Design working pressurc for the water side
d. Design working pressure for the refrigerant side
Section 8. Conformance Conditions
8.1 Confiirmance. While conformance with this standard is voluntary, conformance shall not be claimed or implied for products or equipment within the standard’s Purpose’ (Section 1) and Scope(Section 2) unless such product claims meet all of the requirements of the standard and all the requirements of’ the testing and rating requirements are measured and reported in complete compliance with the standard. Any product that has not met all the requiremenis of the standard shall not reference, state, or acknowledge the standard in any written, oral, or electronic communication.
