HB Smith near boiler piping setup?


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Old 12-04-08, 05:00 PM
S
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HB Smith near boiler piping setup?

I'm going to play dumb for a bit...

I have a half-dozen changes or so to make to this boiler set-up based on input from others. I'm hoping for some feedback to confirm or deny.

Not sure what is pertinent info yet, but we can get into that as you deem required.

Thanks,
Steven

pics


(the exp tank has already been replaced ; ) )
 
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Old 12-04-08, 05:56 PM
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You could do alot here but want to keep it simple?

1. Circulator motors are never mounted up, roll it on its side

2. Is the domestic hot water coil still in use? Otherwise some wiring/aqua stat changes can be made along with losing the flow check. Have you considered an indirect heater for volume, flow and efficiency?

3. Whats with the riser on the return piping? just more friction created.

4. If the coil is not used, I'm sure it can be fired at its lowest input.
 
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Old 12-04-08, 11:28 PM
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Looking at the photos of the boiler (And floor) I guess a start would be to fix that leak!! LOL
 
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Old 12-05-08, 04:07 AM
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a little background..


This is a 100 yo 1400 sqft LOOSE two story building that I am turning into a home.

This oil burning gem (with coil in use) is ripping through fuel at 150 gallons per month during peak season. It's what I presume we call short cycling. Due to the longest loop in history and far too much fin tube in addition to sitting in an unheated garage space, I don't think the 007 has a chance.

I work in the industry and will be converting to gas with a Prestige Excellence (but not until next summer.) I'm looking for suggestions about improving the operation of this unit until then.

ps.. I've also discovered an 8-10' flow restriction of 3/4 to 1/2 copper pipe within the loop that will be corrected.

pps.. heat loss tells me I have 30-40' too much fin tube.

Thanks
 
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Old 12-05-08, 06:12 AM
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If you are going to a condensing unit the excess radiation is a plus. The more radiation the better with them. I would tighten up the home before replacing the boiler. If no you replace the boiler and then tighten the home you end up with a boiler that is over sized again.
 
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Old 12-07-08, 11:22 AM
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Thanks, but as I said I would like to dial in the current unit a little better.

It's been suggested to me that:

the flow check should be gone or moved to the other side of the exp tank(major flow restriction)

the cold water supply should be moved to the return side of the boiler

the 007 (which will be replaced with a Grundfos 3 speed) should be turned

the spirovent does not work correctly on top of the exp tank as pictured??

thanks for any suggestions
 
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Old 12-08-08, 07:11 PM
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nudge...

anyone have any commentary?
 
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Old 12-08-08, 07:24 PM
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All is in the right order.
Flow check should be last
Cold water supply should never be on the return side of the boiler

The circulator should be turned The motor should be between 2-4 o'clock or 8 - 10 o'clock.
The spirovent and expansion tank is in the proper location
See piping
http://www.comfort-calc.net/pictures...old_Piping.JPG
 
 

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