Triangle Tube INS155S Instinct Solo Boiler

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Triangle tube's INS155S Instinct high-efficiency condensing solo boiler is an all stainless steel fire tube heat exchanger (ASME Certified). It can be cascaded up to six boilers and paired with Smart indirect tanks to provide an abundance of hot water. Instinct INS 155 is a high-efficiency condensing boiler that is engineered with reliability in mind and allows for a quick:60 seconds setup provided by CTRLMAX Control System-EZ Setup. This helps you to get the instinct boiler up and running fast. It has a 3-in-1 Universal vent adapter. It directly accepts PVC, Polypropylene, and Stainless Steel.

Features of Solo INS155S Instinct Boiler

  • Turndown ratio is up to 8:1
  • 3 in 1 Universal Vent Adapter
  • Efficiency Rating of 95%
  • Industry-leading performance: Endless Hot Water when combined with Smart Indirect Water Heaters
  • CTRLMAX Control System with 60 Second Set-up
  • Natural Gas or Propane

Performance Specifications of INS155S Instinct Solo Boiler:

FuelNatural / Propane

Input Modulation MBH: 19.375 - 155
AFUE Rating95% 
DOE Heating Capacity MBH: 143
Net AHRI Rating MBH: 124
Water Volume Gal.: 3
Input Capacity: 155,000 BTU/hr


Connections/ Dimension INS155S Instinct Solo Boiler

Supply / Return Connections1”
Gas Connection3/4” 
Vent & Air Connections3”
Dimensions21 5/8” x 16 ¾” x 26” 
Weight (Empty): 97 Lbs
Electrical Requirements120VAC 60Hz 15A Full Load

INS155S Instinct Solo Boiler Dimensions:

155S Instinct Solo Boiler Dimensions

Watch how Triangle Tube's High-Efficiency boiler is produced with a "No-Fault Forward"

Documents and guides: 

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Disclaimer: Must be installed by a licensed contractor or warranty is void.


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