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Inspecting HVAC Systems Topics include heating, venting, and air conditioning inspections.

 
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  #1  
Old 5/22/07, 8:35 AM
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nbhi nbhi is offline
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Default Age/tonage help

Concept BRAND

mn/SB42SA-3A
sn/9893L17239

Thanks



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Old 5/22/07, 8:48 AM
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Default Re: Age/tonage help

3.5 ton

1989 or 1998...dont have Preston's guide nearby right now.
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Old 5/22/07, 8:50 AM
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Mark A. Timpani, CMI Mark A. Timpani, CMI is offline
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Default Re: Age/tonage help

1989




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Old 5/22/07, 8:54 AM
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Default Re: Age/tonage help

Mark and Chris
Thanks for the info. Do you guys have the preston's guild? Where can I find this info on my own?



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Old 5/22/07, 10:26 PM
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Default Re: Age/tonage help

i have preston's guide on paperback.
not sure where/if there's a free database somewhere.

key to identifying tonnage by model #:

within the model # will be a # divisible by 12 and/or 6

in this case, the 42 in the model number tells me it's 3.5 ton

3.5 x 12 = 42
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  #6  
Old 5/22/07, 10:28 PM
Ted Allen Ted Allen is offline
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Default Re: Age/tonage help

Quote:
Originally Posted by mtimpani
1989
Very nice!
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  #7  
Old 5/23/07, 9:18 AM
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Mark A. Timpani, CMI Mark A. Timpani, CMI is offline
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Default Re: Age/tonage help

Like Chris said, m = tons, and only serial numbers have age.... thanks Todd




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