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Weil-McLain Ultra 399 CT - 365K BTU - 91.7% Thermal Efficiency - Hot Water Gas Boiler - Direct Vent

Weil-McLain Ultra 399 CT - 365K BTU - 91.7% Thermal Efficiency - Hot Water Gas Boiler - Direct Vent
Model: 383500726
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  • Product Description
  • 3
    Reviews
  • 1
    Product Q&A
  • Recommended Accessories
  • How-To Articles
  • Manuals
Product Description
+
Features
Features

    Over the last 130 years, Weil-McLain has built a reputation of designing some of the most reliable boilers in the marketplace. Their dedication to producing long-lasting heating solutions is seen in every boiler they make. Weil-McLain's Ultra hot water boiler is highly efficient, simple to install, and remarkably durable. The Ultra is a brilliant addition to any hydronic heating system, and the low profile means that it is easy to fit into even the smallest of spaces. Using condensing technology, the Ultra will reuse heat that escapes from conventional boilers, providing greater efficiency. Equipped with Weil-McLain's proprietary U-Control system, the Ultra is a very user-friendly boiler. Clear display screens relay information about operations, temperatures, and even the maintenance schedule and your contractor's contact information. With U-Control and a 92.5% EFF, the Ultra 399 CT makes comfort and efficiency more accessible than ever before.

    Product Features

    Cast-Aluminum Heat Exchanger
    The Weil-McLain Ultra utilizes a cast-aluminum heat exchanger. The heat transfer properties of cast aluminum are superior to those of stainless steel; it heats faster and transfers that heat very efficiently. A condensate trap and drain system protects the Ultra from corrosion related to condensation.

    Outdoor Reset Control
    An outdoor reset sensor is included with every Ultra boiler. This sensor, when paired with the U-Control system, allows your boiler temperature to be adjusted relative to the temperature outside, eliminating excess energy use and guaranteeing comfort.

    Clean, Efficient Burner
    The Ultra 399 CT has a stainless steel, modulating burner with a woven steel fiber mesh. Modulating burners scale heat production to your boiler's demand, further improving energy efficiency. A venturi mixing body ensures the ideal mixture of fuel and air for your burner. Pre-mixing results in cleaner burning, making the Ultra a low NOx boiler.

    U-Control
    Weil-McLain's U-Control makes it simple to set up even the most complex applications. Preset system configurations may be used right out of the box or customized to your liking. The U-Control supports zoning with up to three setpoints and multiple Ultra boilers may be staged together through it.

    Easy Installation
    The U-Control is not the only design element that makes the Ultra easy to install. Weil-McLain included piping at the top and base of the unit to provide flexibility in how you install the Ultra. All electrical components come pre-wired, color-coded, and connected to the U-Control. Even venting is simplified; a flue pipe adaptor at the top of the unit eliminates the need for sealant.

    Product Includes
    • (1) Weil-McLain Ultra 399 CT Hot Water Boiler
    • (1) Taco 0013 Circulator
    • (1) Outdoor Temperature Sensor
    • (1) Natural Gas to Liquid Propane Conversion Kit
Specifications
General Information
Product Line
Ultra
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 To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Natural Gas
Combustion Type
Condensing
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.
Direct Vent
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.
No
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
Modulating
Mount Type
Floor
Minimum Altitude
0 Feet
Maximum Altitude
5500 Feet
Includes Pump
Yes
Assembly Type
Packaged
Gas Conversion Kit
Included
UPC
672619198852
Performance
Maximum Input Capacity The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used.
399000 BTU
Minimum Input Capacity
80000 BTU
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.
365000 BTU
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.
317000 BTU
Efficiency
91.7 %
Efficiency Type
Thermal Efficiency
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Dimensions
Flue Connection Size
4 Inches
Supply Connection
1.25 Inches
Return Connection
1.25 Inches
Product Height
47.75 Inches
Product Width
22.8125 Inches
Product Depth
22.125 Inches
Product Weight
229 Pounds
Shipping Height
27 Inches
Shipping Width
30 Inches
Shipping Depth
61 Inches
Shipping Weight
297 Pounds
Warranty Information
Parts Warranty A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Heat Exchanger Warranty
15 Years
Certifications
Energy Star Listed
Yes
CSA Listed
Yes
ASME Certified
Yes
AHRI Certified
Yes
AHRI Reference Number
2122112
Features
Features

    Over the last 130 years, Weil-McLain has built a reputation of designing some of the most reliable boilers in the marketplace. Their dedication to producing long-lasting heating solutions is seen in every boiler they make. Weil-McLain's Ultra hot water boiler is highly efficient, simple to install, and remarkably durable. The Ultra is a brilliant addition to any hydronic heating system, and the low profile means that it is easy to fit into even the smallest of spaces. Using condensing technology, the Ultra will reuse heat that escapes from conventional boilers, providing greater efficiency. Equipped with Weil-McLain's proprietary U-Control system, the Ultra is a very user-friendly boiler. Clear display screens relay information about operations, temperatures, and even the maintenance schedule and your contractor's contact information. With U-Control and a 92.5% EFF, the Ultra 399 CT makes comfort and efficiency more accessible than ever before.

    Product Features

    Cast-Aluminum Heat Exchanger
    The Weil-McLain Ultra utilizes a cast-aluminum heat exchanger. The heat transfer properties of cast aluminum are superior to those of stainless steel; it heats faster and transfers that heat very efficiently. A condensate trap and drain system protects the Ultra from corrosion related to condensation.

    Outdoor Reset Control
    An outdoor reset sensor is included with every Ultra boiler. This sensor, when paired with the U-Control system, allows your boiler temperature to be adjusted relative to the temperature outside, eliminating excess energy use and guaranteeing comfort.

    Clean, Efficient Burner
    The Ultra 399 CT has a stainless steel, modulating burner with a woven steel fiber mesh. Modulating burners scale heat production to your boiler's demand, further improving energy efficiency. A venturi mixing body ensures the ideal mixture of fuel and air for your burner. Pre-mixing results in cleaner burning, making the Ultra a low NOx boiler.

    U-Control
    Weil-McLain's U-Control makes it simple to set up even the most complex applications. Preset system configurations may be used right out of the box or customized to your liking. The U-Control supports zoning with up to three setpoints and multiple Ultra boilers may be staged together through it.

    Easy Installation
    The U-Control is not the only design element that makes the Ultra easy to install. Weil-McLain included piping at the top and base of the unit to provide flexibility in how you install the Ultra. All electrical components come pre-wired, color-coded, and connected to the U-Control. Even venting is simplified; a flue pipe adaptor at the top of the unit eliminates the need for sealant.

    Product Includes
    • (1) Weil-McLain Ultra 399 CT Hot Water Boiler
    • (1) Taco 0013 Circulator
    • (1) Outdoor Temperature Sensor
    • (1) Natural Gas to Liquid Propane Conversion Kit
Specifications
General Information
Product Line
Ultra
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 To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Natural Gas
Combustion Type
Condensing
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.
Direct Vent
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.
No
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
Modulating
Mount Type
Floor
Minimum Altitude
0 Feet
Maximum Altitude
5500 Feet
Includes Pump
Yes
Assembly Type
Packaged
Gas Conversion Kit
Included
UPC
672619198852
Performance
Maximum Input Capacity The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used.
399000 BTU
Minimum Input Capacity
80000 BTU
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.
365000 BTU
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.
317000 BTU
Efficiency
91.7 %
Efficiency Type
Thermal Efficiency
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Dimensions
Flue Connection Size
4 Inches
Supply Connection
1.25 Inches
Return Connection
1.25 Inches
Product Height
47.75 Inches
Product Width
22.8125 Inches
Product Depth
22.125 Inches
Product Weight
229 Pounds
Shipping Height
27 Inches
Shipping Width
30 Inches
Shipping Depth
61 Inches
Shipping Weight
297 Pounds
Warranty Information
Parts Warranty A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Heat Exchanger Warranty
15 Years
Certifications
Energy Star Listed
Yes
CSA Listed
Yes
ASME Certified
Yes
AHRI Certified
Yes
AHRI Reference Number
2122112
Product Specs
+
Specifications
General Information
Product Line
Ultra
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 To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Natural Gas
Combustion Type
Condensing
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.
Direct Vent
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.
No
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
Modulating
Mount Type
Floor
Minimum Altitude
0 Feet
Maximum Altitude
5500 Feet
Includes Pump
Yes
Assembly Type
Packaged
Gas Conversion Kit
Included
UPC
672619198852
Performance
Maximum Input Capacity The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used.
399000 BTU
Minimum Input Capacity
80000 BTU
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.
365000 BTU
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.
317000 BTU
Efficiency
91.7 %
Efficiency Type
Thermal Efficiency
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Dimensions
Flue Connection Size
4 Inches
Supply Connection
1.25 Inches
Return Connection
1.25 Inches
Product Height
47.75 Inches
Product Width
22.8125 Inches
Product Depth
22.125 Inches
Product Weight
229 Pounds
Shipping Height
27 Inches
Shipping Width
30 Inches
Shipping Depth
61 Inches
Shipping Weight
297 Pounds
Warranty Information
Parts Warranty A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Heat Exchanger Warranty
15 Years
Certifications
Energy Star Listed
Yes
CSA Listed
Yes
ASME Certified
Yes
AHRI Certified
Yes
AHRI Reference Number
2122112
Reviews
(3)
+
Weil-McLain 383500726 Reviews & Ratings
Product Q&A
(1)
+
Can this Weil-McLain Ultra be wall mounted?
Conrad 
from Colorado 
May 20, 2016
Read Response +
Answer
Yes the Weil-McLain Ultra can be wall mounted with the Ultra Wall Mounting Kit.

DO NOT use the shipping bracket to wall mount the boiler. The wall must be plumb and capable of carrying the weight of the boiler.
Hide Response -
Recommended Accessories
+
How-To Articles
+
Manuals
+
 
 
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Weil-McLain Ultra 399 CT - 365K BTU - 91.7% Thermal Efficiency - Hot Water Gas Boiler - Direct Vent
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