Beckett 7505 Adjust for On-Demand?

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Old 01-21-13, 10:11 AM
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Beckett 7505 Adjust for On-Demand?

Hello all,

I have a Beckett 7505 oil burner that works great but I would like to adjust it to heat my boiler "on demand" (i.e. only when my thermostat drops below the set temperature). I want to avoid burning oil to periodically heat my boiler since I use a wood stove to heat my home most of the time.

I feel it is a waste of resources & $$$s for my burner to kick on to heat water that I probably will not be using. Any suggestions?

Thanks,
David

Also, I do not use the tankless hot water feature, I have a second hot water heater for that.
 
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Old 01-21-13, 10:19 AM
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Hi David,

7505 isn't the model number of the burner itself, only of the 'primary control' that sits above the motor on a 4" junction box... that's where you got that number from, yes?

Your burner is probably an AFG...

The primary control is not what tells the burner to fire... the AQUASTAT is what's doing that... probably a 4x6 gray Honeywell box mounted on the boiler... tell us what model aquastat you have.

I THINK what you are saying is that your boiler HAS a tankless that is not in use, and that the boiler is STILL firing up periodically to 'keep warm', ...

If so, you would want to disable that even if you were NOT burning wood... yes, it's a waste.

So, tell us what aquastat you have... and while yer at it, make and model of the boiler as well, and perhaps we can suggest something...
 
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Old 01-21-13, 10:30 AM
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Honeywell Triple Aquastat Relay L8151A

Utica Boiler SFH4150WT
 
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Old 01-21-13, 12:55 PM
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David, there is an easy and fully reversible mod that can be done to convert the 8151 aquastat to the cold start that you desire.

I'll pass along some info this evening.
 
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