Strange Problem With Heating Zones...


  #1  
Old 02-02-05, 05:27 AM
GOAWAY113
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Strange Problem With Heating Zones...

Hello,

I have an oil burner, baseboard heat (water), and three zones...basement, 1st floor, 2nd floor.

ALL faucets in my house pump out warm to scalding hot water, working perfect! 2nd floor heat is wonderful...always kicks on or off right away when the thermostat is adjusted. Basement is fine...rarely used, but never a problem. In the evening and at night, the first floor heat works well...comes on within a few minutes after adjusting the thermostat.

However, our mystery occurs in the mornings on the 1st floor. The heat just does not come on...we have the programmable thermostat set at 85 degrees to put the heat on at 5:15am. By 6:30, the temperature on the first floor is usually around 64-65...by 7:45, it's usually up to 66-67. Are we missing something here??? Could it be a faulty thermostat (it's brand new, same make & model as the 2nd floor thermostat)??

Has anyone seen this before? Any suggestions?

Thank you all in advance,
Michael
 
  #2  
Old 02-02-05, 07:44 PM
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It sounds like the area is short on radiation. If it reaches the setpoint sooner on warmer days, and later on very cold days, that could be the problem. There isn't much else I can think of without actually seeing the situation while it is happening. Like burner runtime and return water temperature.

Ken
 
  #3  
Old 02-03-05, 05:06 AM
GOAWAY113
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Originally Posted by KField
It sounds like the area is short on radiation.
Ken


Any way to fix this?
 
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Old 02-03-05, 05:15 AM
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The best way would be to do a heatloss on the whole zone and see if, and by how much, the radiation is undersized. You could then add what you need. It may take a long time in energy savings from the setback idea to pay for the work on the system. It would probably do Ok if you didn't set the thermostat back and let the zone fall behind. Have you tried that, letting it at one setting and watch to see if it holds its own?

Ken
 
 

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