 Thermostat Bellows Movement Question?, ...from largest to smallest - how much |
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| vesnyder |
 May 8 2006, 08:46 AM
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#1
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Senior Member  Group: Members Posts: 680 Joined: 14-April 05 From: Cleveland, OH Member No.: 3,933  |
Installing a new/old thermo and was wondering how much movement I should see from the largest to the smallest - without any spring force on the bellows? I am only seeing about a half an inch? The potential issue is when it is contracted - cold? Does not seem to get max movement out of the cooling flaps. Any experience here?
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| Joe Ricard |
May 8 2006, 09:12 AM
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#2
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
From full cold to full hot is not really that much.
You gain movement from mechanical advantage of the arm on the operating rod of the flappers. |
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| davep |
May 8 2006, 12:50 PM
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#3
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914 Historian Group: Benefactors Posts: 5,138 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada  |
That sounds about right. The collapsed bellows is as small as it gets, and the bellows frame limits the maximum size.
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