Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
If our community has helped you, please consider making a contribution to support this website. Thanks!
Please help sizing Mills oil boiler?

JohnNY
Member Posts: 3,327
in Oil Heating
Hi,I'm trying to find the square foot/steam output of an old Mills "20" boiler, with a Carlin 102CRD burner and a 12 gpm tankless coil. Any help would be greatly appreciated.
Contact John "JohnNY" Cataneo, NYC Master Plumber, Lic 1784
Consulting & Troubleshooting
Heating in NYC or NJ.
Classes
Consulting & Troubleshooting
Heating in NYC or NJ.
Classes
0
Comments
-
According to the Hydronic Rating Handbook
the 20 Smith-Mills series boilers have the following capacities:
4-section: 415 EDR
5-section: 575
6-section: 740
7-section: 905All Steamed Up, Inc.
Towson, MD, USA
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Consulting0
This discussion has been closed.
Categories
- All Categories
- 87.1K THE MAIN WALL
- 3.2K A-C, Heat Pumps & Refrigeration
- 59 Biomass
- 427 Carbon Monoxide Awareness
- 117 Chimneys & Flues
- 2.1K Domestic Hot Water
- 5.7K Gas Heating
- 111 Geothermal
- 163 Indoor-Air Quality
- 3.7K Oil Heating
- 72 Pipe Deterioration
- 1K Plumbing
- 6.4K Radiant Heating
- 393 Solar
- 15.5K Strictly Steam
- 3.4K Thermostats and Controls
- 55 Water Quality
- 51 Industry Classes
- 49 Job Opportunities
- 18 Recall Announcements