Burnham Alpine - 105,000 BTU - Hot Water Boiler - NG - 95% AFUE - Direct Vented



Burnham is devoted to pushing the limits of heating technology and efficiency. Their ingenuity is responsible for some of the most efficient boilers on the market today. The Alpine line brings advanced controls together with modulating firing and condensing technology for optimal energy use. By reusing heat contained in the exiting flue gasses and adjusting firing based on current needs, the ALP105BW-2T02 can achieve 95 percent efficiency. The Alpine's advanced technology also makes installation and operation of your boiler easier than ever. Consolidated connections, preprogrammed settings, and common sense interface prompts all contribute to the ALP105BW-2T02's ease of use. Getting the most out of your energy dollar doesn't have to be a complicated affair, and Burnham proves it with the Alpine.

Product Features

The Sage2.1 Control System is standard on—and exclusive to—Alpine hot water boilers. These controls are among the most feature rich in the marketplace. Sage2.1 controls include pump outputs, safety controls, Modbus connectivity, and efficiency improving programs.

Proprietary Internal Condensate System
Burnham has developed their own condensate removal system for Alpine boilers. A polypropylene condensate trap is combined with an internal cutoff switch to prevent efficiency-robbing corrosion on the stainless steel heat exchanger.

Manage Multiple Boilers
Sage2.1 controls feature a "plug and go" sequencer for managing up to eight Alpine boilers. The sequencer will adjust firing rates and run times to optimize system efficiency while minimizing temperature swings. Multiple boiler control requires a header sensor and may not be used with a Modbus interface.

Outdoor Reset Control
The ALP105BW-2T02 includes an outdoor temperature sensor and outdoor reset capability. With outdoor reset enabled, the Sage2.1 control will use outdoor temperature information to further refine your system's efficiency.

Installation Flexibility
Alpine boilers have options to suit a variety of applications. They are field convertible to liquid propane without any additional parts. Direct PVC venting is standard, but the ALP105BW-2T02 also supports stainless steel and concentric vent systems.

Product Includes
  • (1) Burnham ALP105BW-2T02 Alpine Hot Water Boiler
  • (1) Burnham 102189-01 Standard Termination Vent Kit
  • (1) Burnham 101808-01 Concentric Horizontal Wall Terminal
  • (1) Taco 0015 Circulator
  • (1) Miscellaneous Parts Kit
  • (1) Wall Mounting Bracket Kit
  • (1) Instruction Envelope
General Information
Product Line
Hot Water
Fuel Type 
Natural Gas
Combustion Type 
Vent Type 
Direct Vent
DHW Production 
Mount Type
Minimum Altitude
0 Feet
Maximum Altitude
2000 Feet
Includes Pump
Assembly Type
Gas Conversion Kit
95 %
Maximum Input Capacity 
105000 BTU
Minimum Input Capacity
21000 BTU
DOE Heating Capacity 
96000 BTU
Net I=B=R Capacity 
83000 BTU
Electrical Data
120 Volts
60 Hz
Flue Connection Size
3 Inches
Supply Connection
1 Inch
Return Connection
1 Inch
Product Height
32 3/16 Inches
Product Width
16 11/16 Inches
Product Depth
14 Inches
Product Weight
112 Pounds
Shipping Weight
155 Pounds
Country of Origin
United States
ETL Listed
Energy Star Listed
ASME Certified
AHRI Certified
AHRI Reference Number
Warranty Information
Parts Warranty 
1 Year
Heat Exchanger Warranty
12 Years