The NEW K2 Firetube condensing boiler is an addition to the K2 high-efficiency series. Joining the K2 Watertube boiler, the K2 Firetube features a stainless steel vertical firetube heat exchanger and is available in six sizes. All models can be wall-hung and feature 5:1 modulation. The boiler’s dimpled, firetube heat exchanger provides lower pressure drop when compared to water-tube heat exchangers of similar capacity.
- 95% AFUE – high efficiency and low emissions!
- Six wall hung models; 85, 110, 155, 205, 270 MBH (combi version available for 155 MBH)
- Field proven, stainless steel fire tube heat heat exchanger
- Advanced Sage2.2 Boiler Control provides “out-of-the-box” high performance and easy setup
- FULL SIZE easy access side service panel
- UNMATCHED High Altitude Performance
- Versatile top and bottom connections for supply & return (on heating-only boilers)
- Universal vent connection for CPVC/PVC, polypropylene
- ENERGY STAR Certified – Efficiency tax credits/rebates may apply
- 5-year parts warranty
Accessories for the K2 Firetube boiler include:
Sage Zone Control – Precisely calculates heating demand from different zones and “re-sizes” the K2 boiler for optimum efficiency and whole home comfort.
Wireless Outdoor Reset Adapter – Reduced install time with fast hook up and eliminate outdoor wiring.