INSTINCT SOLO 155 BOILER

The Triangle Tube Instinct Solo 155 Boiler (model INS155S / INSFS155S) is a high-efficiency condensing wall-hung boiler designed for residential and light commercial hydronic heating applications. It supports both natural gas and propane operation and features a stainless steel fire-tube heat exchanger for durability and efficient heat transfer.

Key features:

• 155,000 BTU input capacity
• 95% AFUE efficiency rating
• Stainless steel fire-tube heat exchanger
• Wall-mounted condensing boiler design
• 8:1 turndown ratio for improved efficiency and load matching
• Compatible with natural gas or LP propane
• Built-in CTRLMax control system with simplified setup
• PVC, CPVC, polypropylene, or stainless vent compatibility
• Cascade capability up to 6 boilers
• Outdoor reset control and freeze protection
• Energy Star® certified

Technical specifications:

• DOE Heating Capacity: 142,000 BTU
• Net AHRI Rating: 123,000 BTU
• Boiler connections: 1" NPT
• Gas connection: 3/4" NPT
• Vent size: 3"
• Dimensions: 16-1/2" D × 21-3/4" W × 26" H
• Weight: approximately 95 lbs
• Maximum operating pressure: 50 PSI