Need new boiler advice

clammy

I recently re pipe a peerless 61-4 and for a small boiler it was heavy ,i believe they have revived the casting and now have larger tapping i found it to be a good unit and there is no trade off on reliablity of a electronoc ingition only a maybe 15 to 20 buck saving on no pilot running 24=7 .As for the price it seems cheap to me one thing make sure your installer is going to follow the boilers companies near boiler piping that's waht makes the difference also check the condition of your return pipes and and make sure that your losing water issues are indead from the boiler and not leaking buried returns plus to replace your main vents and rad vents after skimming your boiler to remove oils which impead the systems overall performce and remenber to insulate your near boiler piping for better performce .Here's a attachment of a recently re piped older 61-4 peace clammy

Greg_13

New Boiler thoughts?

My old steam boiler finaly gave up the ghost. (Well, it continues to run, but is leaking water), so with the price of gas these days I figure it is time for a replacement. I’m hoping efficiency will improve. It is a Weil-McClain rated as folllows:
450SF steam; 144BTU/Hr; Steam 108 MBH. Single pipe steam system in the Boston area.

I calculated the SF radiation of my radiators and they totally 386 SF. I did some calculations with pick up factors of
1.33 -> 513 SF steam or 123K BTUH
1.5 -> 579 SF steam or 139K BTUH
I would like to leave a little extra wiggle room in case we add a radiator or two in the future as well.

My plumber suggested the following replacement options:

Weil McClain EG-45 (383 SF steam; 92K BTU/hr)
Peerless 63-04 (459 SF steam; 147 MBH)
Or
Burnham IN-6 (about $200 more) (450 SF steam; 144 MBH)

I have the following questions:
1. Are the sizes recommended appropriate? All but the Peerless seem too small to me.
2. Do you have any preferences out of these (or other) brands?
3. Does an installed prices of about $5,300 seem reasonable?
4. Any thoughts about standing vs. electronic pilot? Obviously you save gas with the electronic but I wonder if the savings is worth the trade off for reliability.

Any suggestions would be greatly appreciated.

-Greg

[Deleted User]

LIGHTS ON...`

Clammy, I did this with Irfanview software (FREEware) available at www.irfanview.com


Nice drop header BTW...

Enjoy!

ME

Greg_13

Drop Header and sizing

Thanks for the info. What is the advantage of the drop header?

Also, and more importantly, any thoughts on sizing? I want to go ahead with the project and I'm not 100% comfortable with the sizes of boilers he suggested. Am I crazy or is he undersizing?

-Greg

Bob W._3

Greg, look at note #4 below the Ratings charts for the EG boiler. The 1.333 pickup factor they quote (for steam) is built in to the ratings. I'm pretty sure all the boiler manufacturers include the pickup factor.

Note #4, as follows:

"Net I-B-R ratings are based on net installed radiation of sufficient quantity for the requirements of the building and nothing need be added for normal piping and pick-up. Water ratings are based on a piping and pick-up allowance of 1.15; steam ratings on an allowance of 1.333. An additional allowance should be made for unusual piping and pick-up loads."

don_52

way cool...

Mr.Clammy,

Nice stuff, tip o' the lid.

Regards, db