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Weil-McLain Ultra Oil-3 - 123k BTU - 87% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model:
386901006
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Features
- 3-Pass Heat Exchanger
- The UO-3 uses a 3-pass cast iron heat exchanger. This design is more efficient and provides better flame control than non-3-pass designs, reducing your heating costs.
- Venting Flexibility
- UO-3 boilers can be placed into an existing chimney vent or direct vented. By using the direct vent exhaust gasses are simply piped out your home, no power-assisted fan needed.
- Simple to Service
- Another benefit of the 3-pass design is the horizontal configuration. With the swing-away door open, the UO-3 combustion area and flue are exposed for easy cleaning or maintenance.
- Captured Seals
- Silicone-coated fiber ropes are used for sealing the boiler sections. These seals expand and contract with the boiler, keeping the unit watertight and preventing contaminants from entering your system.
- Burner Options
- Beckett NX, Beckett AFG, Carlin, Riello
Over the last 130 years, Weil-McLain has built a reputation of designing some of the most reliable boilers in the marketplace. Weil-McLain's Ultra Oil hot water boiler is highly efficient, simple to install, and remarkably durable. Using condensing technology, the Ultra Oil will reuse heat that escapes from conventional boilers, providing greater efficiency. When equipped with the optional Weil-McLain Advanced Features Module (AFM), the Ultra Oil is a very user-friendly boiler. A clear display screen relays information about operations, temperatures, and system status. With AFM and an 87% AFUE, the Ultra Oil makes comfort and efficiency more accessible than ever before.
Product Note
This boiler does not include an oil burner. Please see the Accessories tab for compatible burners if you require one.
California residents see
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
For more information go to: www.p65Warnings.ca.gov
Specifications
386901006
Overview
Product Category
Boiler
UPC
0672619204003
General Information
Product Line
UO
Product Category
Boiler
Medium
Medium
Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
Hot Water
Fuel Type
Fuel Type
To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Oil
Combustion Type
Combustion Type
Condensing appliances use leftover thermal energy from combustion gases to heat water in a secondary heat exchanger, resulting in higher efficiency and lower exhaust temperature.
Conventional
Vent Type
Vent Type
Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
Chimney Vent
DHW Production
DHW Production
DHW (Domestic Hot Water) is potable water for uses other than space heat. Some boilers are able to provide DHW "out of the box", while others can do so with the purchase of optional accessories.
Available
Modulating/Staging
Modulating/Staging
Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control. Learn More
Staging
Mount Type
Floor
Maximum Altitude
5500 Feet
Assembly Type
Packaged
Includes Pump
Yes
Burner Model
Sold Separately
Performance
AFUE
AFUE
AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace. Learn More
87 %
Input Rate
1 GPH
DOE Heating Capacity
DOE Heating Capacity
Also referred to as Gross Output, this is the output of a boiler after accounting for combustion efficiency. We recommend sizing hot water boilers based on the DOE Heating Capacity.
123000 BTU
Net I=B=R Capacity
Net I=B=R Capacity
I=B=R, also referred to as Net Output or AHRI Capacity, is the rated heat output of a boiler after accounting for combustion efficiency, piping loss, and an extra pickup factor. We recommend sizing steam boilers based on the I=B=R rating.
107000 BTU
Electrical Data
Phase
1
Frequency
60 Hz
Dimensions
Flue Connection Size
6 Inches
Supply Connection
1 1/2 Inches
Return Connection
1 1/2 Inches
Product Height
40 Inches
Product Width
22 1/16 Inches
Product Depth
25 Inches
Product Weight
636 Pounds
Shipping Weight
636 Pounds
Certifications
Country of Origin
United States
Energy Star Listed
Yes
CSA Listed
Yes
AHRI Certified
Yes
AHRI Reference Number
7434749
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Heat Exchanger Warranty
20 Years
Reviews
(1)
Weil-McLain 386901006 Reviews & Ratings
Put One In My House Before I Put Them In Others! Love It!
By Dave B
Prospect, Connecticut
Review Posted 11/07/2020
I'm an hvac/r tech and whenever possible this is the boiler I push for. I installed this boiler I'm my house first reasons were the following: I firmly believe in a high mass boiler. You get what you pay for and yes your paying for weight, lots of it @ 600+ lbs. I'm not a fan of low mass boilers. Let's face it when it gets cooler then cold out your cycle times will become more frequent depending on heat losses in a home or building. R factor in insulation / windows etc etc these will affect your cycles of operation.
Even though a cast iron boiler of low mass won't lose it's heat in the casting like a steel boiler it won't hold it like high mass. Once my boiler reaches temp it's a storage cell. I have witnessed an entire cycle of it heating my second floor and it never fires! Being a tech yes my set-up is beyond the typical home owner as even though my controls are nothing over the top I invested in pipe insulation that was over the top. The intention was to keep my "delta t" losses low so that the water coming back was not losing were it shouldn't (ceilings and in walls over the garage etc"). The three pass casting is very efficient and cleaning it is so easy with the fully opening door into the boiler internals. I use a regular Beckett burner not the low nox which I don't suggest using. The burner can be set to be so efficient you will be blown away how clean it burns as you will find fine ash in the interior when you go to service it! Just amazing!
Even though a cast iron boiler of low mass won't lose it's heat in the casting like a steel boiler it won't hold it like high mass. Once my boiler reaches temp it's a storage cell. I have witnessed an entire cycle of it heating my second floor and it never fires! Being a tech yes my set-up is beyond the typical home owner as even though my controls are nothing over the top I invested in pipe insulation that was over the top. The intention was to keep my "delta t" losses low so that the water coming back was not losing were it shouldn't (ceilings and in walls over the garage etc"). The three pass casting is very efficient and cleaning it is so easy with the fully opening door into the boiler internals. I use a regular Beckett burner not the low nox which I don't suggest using. The burner can be set to be so efficient you will be blown away how clean it burns as you will find fine ash in the interior when you go to service it! Just amazing!
Dave B Recommends This
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Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Durable, Features, Quiet, Price
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Weil-McLain Ultra Oil-3 - 123k BTU - 87% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
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