Specifications

4
High Performance
Commercial Hydronic and
Radiant Heating
Introducing the Apex from Burnham Commercial, a condensing
boiler with thermal efficiency ratings of 95%. The Apex utilizes
a stainless steel heat exchanger, designed to extract maximum
heat from the combustion process, along with the Apex Boiler
Control System which is designed to enhance boiler & system
efficiency and provide easy installation and servicing. These
intelligent features are wrapped in a sleek, modern appliance-
like jacket, which makes the Apex both attractive and smart.
Stainless Steel Heat Exchanger
The heart of the Apex boiler is
the ASME-certified
stainless steel heat
exchanger. Each
heat exchanger
is factory hydro-
tested to insure quality
and reliability.
The Apex Boiler Control System
The Apex Boiler Control System (ABC System) has many features
which maximize the efficiency and comfort of a heating system,
while providing unmatched ease of use (for a full description of
these features, please see pages 4-5)
• Full color backlit touchscreen display
• Intuitive menus which provide data in simple text, not in
cryptic codes
• Capable of linking up to eight boilers and three pumps
simultaneously
• Control data logging
• Outdoor reset and warm weather shutdown
• Domestic hot water priority
• Full modulation with 5-to-1 turndown and adaptable firing
rate output
• Built in provision for off-season pump exercising
• Plug & play connections
• Multiple & adjustable pump outputs
• Night setback & unoccupied modes
• 4-20mA and modbus inputs
Apex Boiler Features