P-K SOLIS® Firetube Condensing Domestic Hot Water Heater

P-K SOLIS® Firetube Condensing Domestic Hot Water Heater

Patterson-Kelley is expanding the SOLIS^® line to include the all-new SOLIS^® W-Series for domestic hot water, alongside its highly efficient condensing boiler models!

Built to transform both the commercial boiler and domestic hot water heating market, these top-of-the-line, highly efficient condensing firetube units are built with the end user in mind. The advanced design of the SOLIS^® heat exchanger ensures superior performance and longevity, whether used for space heating or domestic hot water applications. With an industry leading 10:1 mechanical turndown, these units maximize efficiency by precisely matching demand, reducing energy waste, and optimizing performance.

Models: SLW1000, SLW1500, SLW2000, SLW2500, and SLW3000

Features:

1000 – 3000 MBTU (Natural Gas)
ASME Section IV HLW Rated
Up to 97% thermal efficiency
10:1 mechanical turndown
316 SS tube and tube sheet
304 SS heat exchanger shell
Narrow footprint fits through a standard 36” doorway!
Hinged and removable doors allow for quick access to firetubes and burner for easy maintenance
Zero-clearance capable for side-by-side installation
The simple-to-use NURO® touch-screen technology adjusts boiler controls and settings with the swipe of a finger
Ultra-low NOx emissions

Specification

Standard 10:1 Mechanical Turndown
10:1 Turndown Technology Increases Efficiency and Reduces Operating Cost
Patterson-Kelley has achieved higher turndown with a unique mechanical process that allows the gas valves to control boiler performance without increasing excess air. This results in building flexibility and efficiency.
This method delivers a 10:1 turndown rate while preserving a high dewpoint, which helps maintain high condensation levels. This higher turndown capability will provide designers the ability to match input to building loads without sacrificing efficiency and reliability.
Simplified Serviceability
The heat exchanger is designed to provide simplified and quick annual maintenance. The top of the heat exchanger opens, providing full access to the tubes and burner inside the unit. This makes any maintenance, including cleaning, a quick and cost-effective process.
NURO^® Touch-Screen Control SystemTurndown energy usage
All of our units are equipped with the most intuitive interface in the industry, the NURO® Touch-Screen Control. Designed to maximize efficiency, the NURO® Control System monitors and modulates the combustion and ignition of the boiler to maintain the desired outlet temperature

Technical specification

Unique ref.p-k-solis-firetube-condensing-domestic-hot-water-heater
Product familyWater Heaters
Product groupDirect Water Heaters
TypeObject (single object)
Date of publishing2026-01-07
Edition number1

Links

Product urlhttps://www.pattersonkelley.com/solutions/water-heaters/direct-fired/p-k-solis-w-series/
Technical descriptionhttps://www.pattersonkelley.com/uploads/2020/11/SOLIS-Brochure.pdf

Designed inUnited States
Manufactured inUnited States

Classification

BIMobject CategoryPlumbing - Water Heaters
ETIM CodeEC010868
ETIM NameGas-fired water heater
Uniclass 2015 CodePr_60_60_96
Uniclass 2015 DescriptionWater heaters
CSI MasterFormat 2014 Code22 34 30.16
CSI MasterFormat 2014 TitleResidential, Direct-Vent, Gas Domestic Water Heaters
OmniClass Number23-31 29 00
OmniClass TitleHot Water Heaters

Region availability

North America	Asia
Anguilla	South Korea
Antigua and Barbuda
Aruba
Barbados
Belize
Bermuda
British Virgin Islands
Canada
Caribbean Netherlands
Cayman Islands
Collectivity of Saint Martin
Costa Rica
Cuba
Curaçao
Dominica
Dominican Republic
El Salvador
Greenland
Grenada
Guadeloupe
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
Montserrat
Nicaragua
Panama
Puerto Rico
Saint Kitts and Nevis
Saint Lucia
Saint Pierre and Miquelon
Saint Vincent and the Grenadines
Saint-Barthélemy
Sint Maarten
The Bahamas
Trinidad and Tobago
Turks and Caicos Islands
U.S. Virgin Islands
United States