

Heat Only Wall
The Gallant Heat Only Wall has the capability to modulate with a turndown ratio of up to 5.5:1. This modulation means the boiler will alter its firing rate to meet the current demand, causing less cyclic behavior and resulting in lower operating costs. The improved CTRMax Control System makes configuration quick and easy with setup in 60 seconds or less for standard installations. For unique installations, the 4 circulator outputs are fully configurable for endless customization.

Warranty Info
INDUSTRY LEADING WARRANTY PROGRAM
Standard – 2-year parts and 10-year primary heat exchanger warranty.
Plus – 5-year parts, 2-year labor allowance, and 10-year primary heat exchanger warranty with registration.
Elite – 6-year parts, 3-years labor and 12-year heat exchanger warranty offered with registration, combustion analysis and hydronic system treatment. See warranty for details.
Standard – 2-year parts and 10-year primary heat exchanger warranty.
Plus – 5-year parts, 2-year labor allowance, and 10-year primary heat exchanger warranty with registration.
Elite – 6-year parts, 3-years labor and 12-year heat exchanger warranty offered with registration, combustion analysis and hydronic system treatment. See warranty for details.
Features and Benefits
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Industry Leading Warranty Program with Coverage up to 6 yr. Parts, 3 yr. Labor & 12 yr. Heat Exchanger
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Integrated Cascade Controlling for up to Six Boilers
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Multi-Boiler Cascade Piping System Available
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4” Vent up to 100’
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Quick-Dose System Inhibitor/Protector Included
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Two Reset Curves / Set Points
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Stainless Steel Fire Tube Heat Exchanger
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Easy Troubleshooting in Plain Text, No Codes
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High Water Content
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ASME Stamped
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Low NOx – 2012 SCAQMD Certified
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Developed for the USA
Product/Marketing Literature
Installation/User Manuals
Technical Supplements
Engineering Bulletins
Submittals
Engineering Submittal Gallant Solo 250
Engineering Submittal Gallant Solo 299
Engineering Submittal Gallant Solo 399
Engineering Submittal Gallant Cascade System CPS500 Primary Secondary
Engineering Submittal Gallant Cascade System CPS800 Primary Secondary
Engineering Submittal Gallant Cascade System CPS1000 Primary Secondary
Engineering Submittal Gallant Cascade System CPS1200 Primary Secondary
Engineering Submittal Gallant Cascade System CPS1600 Primary Secondary
Engineering Submittal Gallant Cascade System CPS2000 Primary Secondary
Repair Manuals
Product Comparison
Gallant Model | Heat Only 250 | Heat Only 299 | Heat Only 399 |
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Input Modulation (MBH) | 43.6 to 240 | 72.5 to 299 | 72.5 to 399 |
AFUE | 95% | 95% | 95.1%** |
DOE Heating Capacity (MBH) | 222 | 278 | 379 |
Net Boiler AHRI Rating (MBH) | 193 | 242 | 330 |
Fuel | NG & LP | NG & LP | NG & LP |
Turndown Ratio | 5.5:1 | 4.1:1 | 5.5:1 |
Vent/Air Diameter | 3″ | 4″ | 4″ |
Supply/Return Connections | 1-1/4” | 1-1/2″ | 1-1/2″ |
Gas Connections | 3/4” | 1″ | 1″ |
Water Volume Gal. | 4.5 | 7.4 | 7.4 |
Weight (Lbs) | 140 | 210 | 216 |
Cabinet Depth (inch) | 17-5/16” | 23-5/8″ | 23-5/8” |
Cabinet Width (inch) | 19-3/4” | 24-7/8” | 24-7/8” |
Cabinet Height (inch) | 36-9/16” | 39-3/8” | 39-3/8” |