S   LUTIONS
Text Box: Focused on The Engineered Environment Text Box: January 2011 Text Box: www.jacco.com

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.
Text Box: January Feature:

 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
Text Box: January Question & Answer:

Question:    An Aaon RN40 rooftop unit utilizes (4) 9 ton compressors on tandem circuits.  If both circuits are provided with variable capacity compressors, what is the minimum temperature rise (assume 16,000 cfm)?

                   a.) 0.6°F     b.) 1.25°F    c.) 2.5°F      d.) 3.25°F

 

Prize:         Maxfli Revolution Cart Bag!

 

Respond by February 15th with the correct answer to be entered in the raffle for this month’s prize!
Text Box: Last Month’s Question & Answer Winner!

Question:  What is the number of options (not combinations) available on an Aaon RN rooftop?

 

Answer:    d.) 450+  Congratulations to Nate Kobb for winning a digital camera!

Dedicated Outdoor Air Systems

Distinct Temperature Control In Heating Mode During Moderate Temperatures

 

With the rise in use of Dedicated Outdoor Air Systems (DOAS) some concerns have arisen in regards to tight temperature  control in the heating mode during moderate OA temperatures.  Aaon has the perfect solution!  Aaon can provide an air source heat pump with modulating compressors (10-100% modulation) on all of their RQ/RN style rooftop and CB/CC condensing units that range from 2-70 tons.  This will provide a turndown of 5-10% in the heating mode and maintain a Coefficient of     Performance in the 3.0 range at 40°F.  An electric heater will increase the unit MOCP and provide a COP of 1.0.  Why provide additional components such as electric heaters when you can utilize the existing compressors to create the turndown you need at a more economical cost to the owner and reduced operating costs? 

 

Aaon’s Mass Customization principles can give you the answers you need.  With over 450 options available on their RQ/RN rooftop units its difficult to find an obstacle Aaon cannot overcome.