S1G Series – Gas-Only Low-NOₓ Burner

S1G Series burners are clean-burning, gas-only combustion systems designed for commercial and light industrial boilers. With input capacities from 2.1 to 12.6 MMBtu/h, they provide full modulation and turndown up to 10:1. Built for firetube, watertube, and retrofit systems, the S1G Series features a low-NOₓ design (<30 ppm), quiet operation, and compact mounting for easy access. These burners operate with low excess air and are compatible with multiple boiler types, offering efficient and stable combustion in space-constrained environments. UL and cUL listed.

Specifications:

Fuel: Natural gas only

Input capacity: 2.1 to 12.6 MMBtu/h

Turndown: Up to 10:1

Emissions: <30 ppm NOₓ

Control: Fully modulating

Applications: Firetube/watertube/hybrid boilers

Mounting: Compact, front-access

Fan: High-efficiency integrated blower

Certifications: UL/cUL listed

Operation: Quiet, low excess air combustion