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reygalindo
Associate

Join Date: Sep 2006
Location: San Diego
Posts: 28

Johnson Controls for HAVC

05/18/2008 1:08 PM

Hi there,

Does any one have some information about how Johnson controls are implemented on a HVAC system where there is Air Supply and Air Return to the unit. Also when a unit has an economizer. What are the differences on your logic to be loaded on the controller for either unit? If you have any samples with schematics, it would be great to see them and perhaps the link to some kind of trial software to play with. I know I am probably asking for a Christmas present to early. Well I just recently have learned about HVAC systems and I figured out that is quite beneficial to understand how they work.
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crm
Power-User
Engineering Fields - Piping Design Engineering - New Member Technical Fields - Architecture - New Member

Join Date: Apr 2006
Location: Bangalore India
Posts: 288
Good Answers: 3
#1

Re: Johnson Controls for HAVC

05/19/2008 2:35 AM

They may be a good manufacturers of components to control HVAC system but they are very bad contractors in erection of complete system in other words they are far behind in application engineering at least in India this is my first hand experience with M/s Johnson controls in five star hotel project

crm

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shogun7
Commentator

Join Date: Dec 2005
Posts: 92
Good Answers: 5
#2

Re: Johnson Controls for HAVC

05/22/2008 12:02 AM

What type of controls? DDC, Pneumatic, Electric, or Hybrid.
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crm
Power-User
Engineering Fields - Piping Design Engineering - New Member Technical Fields - Architecture - New Member

Join Date: Apr 2006
Location: Bangalore India
Posts: 288
Good Answers: 3
#3
In reply to #2

Re: Johnson Controls for HAVC

05/23/2008 11:05 PM

when their sales and marketing team meets the customer they claim they are the best in all the fields you have mentioned once they pick up the order have the LC collected the team who assured you of their best services disappear in to thin air and you are left to argue and fight with their field staff who are dumbs

crm

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