CERTIFICATE FOR AIR SYSTEMS
 
  AIR SYSTEMS are usually very simple in terms of components. Since there is no pressurized glycol loop there is no need for an expansion tank, pressure gauge, relief valve, drains, etc.
  Air is pulled from the building from return or cold air registers into the Northern Comfort collectors where it is heated and blown into the building through supply or warm air registers for space heating. A sensor in the collector determines if the air is hot enough to heat the building and turns on the blower. A room thermostat will turn the blower off when it is satisfied. In air systems for heating only the collectors are usually installed at 90 degrees for maximum winter gain and little summer collection. Air Systems can also be used on Greenhouses and for Agricultural Grain Drying.

 Air systems can also be used to heat water see air systems dual mode.


Roof Mount    [            
  • Can look built into Structure
  • Dormer causes no future roofing problems
  • Better spring and fall performance
  • Can be used to heat hot water
    in the summer
  • Up and away from some shading problems

 
 

  


   Click to Enlarge Wall Mount

Wall Mount  ▫ Easier to Install  ▫ Takes advantage of snow reflection ▫ Creates no future 

                               roofing problems ▫ Poor performance in April / May ▫ Can't be used in the
                               summer to heat water ▫ More subject to shading problems.  

         How Active Solar Systems Work  [

 

II. Air Systems in Dual Mode.
  Air systems in dual mode or water and space heating are installed as in space heating but have another duct loop to a water heat exchanger. These systems are set to heat water until the space heating thermostat calls for heat. The air flow from the northern comfort collectors then blow the heated air directly into the building. Once the building is satisfied the system defaults back to water heating. These systems usually have the collectors set to 60 degrees.
 
 Solar Heating Services uses Northern Comfort System air collectors by Sunsiaray, the only SRCC rated air collector and the only air collector eligible for the Federal Tax Credit when used in dual mode. '
 
 

© 2006-2007 Solar Heating Services, LLC. Sources: Sundu Solar Energy/ Great Lakes Renewable Energy Association.

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