Dunkirk D248A1200A20
Dunkirk D248A1200A20
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Dunkirk D248-1200 - 698K BTU - 77.5% Thermal Efficiency - Steam Gas Boiler - Chimney Vent

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D248A1200A20

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Dunkirk D248-1200 - 698K BTU - 77.5% Thermal Efficiency - Steam Gas Boiler - Chimney Vent
Dunkirk D248-1200 - 698K BTU - 77.5% Thermal Efficiency - Steam Gas Boiler - Chimney Vent
Model: D248A1200A20
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Recommended Accessories

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Expert Recommended Accessories Selected by Ken, our Expert
Required Accessories 9
These accessories are required to properly setup/install this product.
Optional Accessories 10

Features

    Dunkirk is one of the most established names in heating. Their reputation has been built over the years by ingenious design and perpetual innovation. The D248-1200S is a modular steam boiler for large applications. The modular design makes it easy to find a D248 that suits your application without worrying about over —or under —sizing. Cast-iron is used for the construction of the heat exchanger sections to create a boiler that is as durable as it is powerful. Installing a large boiler may seem daunting, but Dunkirk has already handled a lot of the heavy lifting. The modular bases of the D248 are assembled before shipment with the gas valves, manifolds, burners, and pilots preinstalled. When it comes to supplying reliable heating for the largest applications, the D248 shines. With a simplified installation process and incredible longevity, this is an exceptional hydronic heating choice.

    Product Features

    Efficiency-Boosting Insulation
    Heat retention is a cornerstone of efficiency. Dunkirk employs an insulated boiler jacket with the D248 to reduce wasted heat and make your energy dollar go further.

    Easy Access
    The D248 is designed for quick inspection and maintenance. The boiler's front panels are easily removed to allow access to the boiler controls. The draft hood of the D248 features a cleanout panel, providing a simple way to clean the flueways.

    Simplified Wiring
    Wiring for the D248 is streamlined through a "plug 'n play" harness and junction box. This harness is color-coded so that connecting the boiler base controls is not just quick, but error proof.

Specifications

D248A1200A20
specs product image PID-47663
General Information
Product Line
D248
Medium Learn More
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.
Steam
Heat Exchanger Material
Cast Iron
Fuel Type Learn More
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 Learn More
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 Learn More
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 Learn More
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 Learn More
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
Single Stage
Mount Type
Floor
Minimum Altitude
0 Feet
Maximum Altitude
2000 Feet
Assembly Type
Knockdown
Gas Conversion Kit
Not Convertible
Performance
Maximum Input Capacity Learn More
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.
1200000 BTU
DOE Heating Capacity Learn More
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.
930000 BTU
Net I=B=R Capacity Learn More
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.
698000 BTU
Efficiency Type
Thermal Efficiency
Efficiency
77.5 %
Ultra Low NOx Emissions Learn More
Ultra Low NOx Emissions
NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Ultra Low NOx appliances emit less than 10-14 ng/J (nanogram per Joule) of NOx. Learn More
No
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Dimensions
Flue Connection Size
16 Inches
Supply Connection
4 Inches
Return Connection
4 Inches
Product Height
38 Inches
Product Width
57 Inches
Product Depth
38 1/4 Inches
Shipping Weight
2821 Pounds
Certifications
CSA Listed
Yes
ASME Certified
Yes
AHRI Certified
Yes
AHRI Reference Number
2120644
Warranty Information
Parts Warranty Learn More
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
10 Years

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Dunkirk D248A1200A20 Reviews & Ratings

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Dunkirk D248-1200 - 698K BTU - 77.5% Thermal Efficiency - Steam Gas Boiler - Chimney Vent
Dunkirk D248A1200A20
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