S   LUTIONS

Welcome to   S    LUTIONS, a monthly newsletter provided by Jacco & Associates. Jacco’s focus on system knowledge provides you with the engineering support and product solutions for your applications.

 61 Milford Dr.  Hudson, OH  44236  Phone:(330) 463-0100  Fax:(330) 463-0101

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Questions or comments? E-mail us at opportunity@jacco.com

Question:    To promote cabinet longevity, Aaon has incorporated which of the following construction standards?

                   A.) Foam Panels     B.) Thermal Break     C.) Stainless Steel  Hinges     D.) All Of The Above

Prize:        Samsung 22” LCD HDTV!

Respond by December 14^th with the correct answer to be entered in the raffle for this month’s prize!

Question:  What is the #/Hr of condensate required on a 1,000 cfm system to go from 70/30%RH to 70/45% RH?    

Answer:    B.) 10.  Congratulations to Ed Shank for winning a Blu Ray Player!

HVAC equipment which is installed on the exterior or rooftop of a building can be exposed to extreme ambient conditions. Depending on the location of the    installed equipment, it can experience everything from hot and humid periods to cold and dry periods.  AAON has recognized there is a need to provide an    attractive, corrosion resistant paint finish that will last through the complete    lifetime of the equipment.

 

Typically the industry acceptability for HVAC equipment paint has been to surpass a 500-1000 hour salt spray corrosion resistance test.

 

The ASTM B 117-95 testing procedure is the HVAC industry standard method of testing the acceptability and longevity of a paint finish. For the test, panels are placed in a 5% salt spray and fog atmosphere for measured periods of time. The test is usually terminated, and the hours recorded, when the surface of the sample has been penetrated by the corrosive effects of the salt environment.

 

After extensive testing and research, AAON made the change in 1996 to a new paint finishing system, with polyurethane paint and a catalytic dryer, which surpasses a 2,500 hour salt spray corrosion resistance test. This finish is applied to the G90 galvanized steel exterior of AAON equipment. As an option, the paint finish can be applied to interior of equipment to provide corrosion protection to the complete unit.

 

Test Results:

· No Visible Deterioration Until 2,500 Hours Of Exposure

· Panels Retained Color & Gloss Throughout Entire 2,696 Hours of The Test

Cabinet Of 8 Year Old RTU With 1,000 Hour Salt Spray Test Paint

Which Would You Prefer?