Triangle Tube INSFS110S Instinct 110k BTU (Floor)

Product Description

Triangle Tube INSFS110S is a high-efficiency condensing hot water gas boiler with a 110,000 BTU maximum input and 102,000 BTU DOE heating capacity. It uses a stainless steel fire tube heat exchanger and provides modulating operation with an 8:1 turndown ratio. The unit ships as a floor-mounted packaged assembly with an internal circulator pump, CTRLMax control system, Tsync Wi‑Fi connectivity, Caleffi hydraulic air separator, and a 3-in-1 universal vent adapter.

• 95% AFUE condensing boiler with 110,000 BTU max input and 102,000 BTU DOE heating capacity; 8:1 turndown ratio.
• All stainless steel fire tube heat exchanger, factory-supplied hydraulic air separator (Caleffi 548 Series), and packaged internal circulator pump.
• CTRLMax control system with 60-second EZ setup and Tsync Wi‑Fi connectivity; includes 3-in-1 vent adapter accepting PVC, polypropylene, and stainless steel.

Product Highlights

110,000 BTU input, 95% AFUE, stainless steel fire tube heat exchanger, 8:1 turndown, CTRLMax controls with Tsync Wi‑Fi, Caleffi separator, 3-in-1 vent adapter.

Product Information

Standard Information

• Brand: TRIANGLE TUBE
• Manufacturer Part Number: INSFS110S

Technical Specifications

• Brand: Triangle Tube
• MPN: INSFS110S
• Model / Product Line: Instinct
• Product Type: Condensing hot water gas boiler
• Input Capacity (BTU/hr): 110,000 BTU
• DOE Heating Capacity (BTU/hr): 102,000 BTU
• Net IBR / Net AHRI Capacity (BTU/hr): 89,000 BTU
• Minimum Input Capacity (BTU/hr): 13,750 BTU
• AFUE: 95%
• Turndown Ratio: 8:1
• Fuel Type: Natural Gas
• Propane Conversion Kit: Included
• Combustion Type: Condensing
• Modulating/Staging: Modulating
• Includes Pump: Yes (internal circulator pre-installed)
• Mounting Type: Floor
• Vent Type / Connection Size: Direct vent / 3 inches
• Flue Connection Size: 3 inches
• Gas Connection Size: 3/4 inch (NPT)
• Boiler Supply Connection: 1 inch
• Boiler Return Connection: 1 inch
• Water Volume: 2 gallons
• Cascade Capability: Up to six boilers
• Control System: CTRLMax control system (60-second EZ setup, graphical display)
• Connectivity: Tsync Wi‑Fi
• Heat Exchanger: All stainless steel fire tube
• Vent Adapter: 3-in-1 universal vent adapter (accepts PVC, polypropylene, stainless steel)
• Electrical Voltage: 120 Volts
• Electrical Frequency: 60 Hz
• Electrical Phase: 1
• Full Load Amperage: 15 A
• Dimensions (W x D x H): 22 x 22 x 41 inches
• Weight: 145 Pounds
• Energy Star Listed: Yes
• AHRI Certified: Yes
• ASME Certified: Yes
• AHRI Reference Number: 206764089
• Maximum Altitude: 10,000 Feet
• Minimum Altitude: 0 Feet
• Overall Medium: Hot Water