Burnham Apex Brochure

95% THERMAL

EFFICIENCY

500, 625, 725,

800 MBH

MULTIPLE

VENTING OPTIONS

UP TO 200

EQUIVALENT FEET

NEGATIVE

PRESSURE

CABINET

5:1 MODULATION

Apex™ Series

STAINLESS STEEL, CONDENSING,
GAS-FIRED COMMERCIAL BOILER

EQUIPPED WITH ABC 2.1
CONTROL SYSTEM

- MULTIPLE BOILER LEAD/LAG
UP TO 8 BOILERS

- LCD TOUCHSCREEN DISPLAY

- INTUITIVE TEXT-BASED MENUS

- OUTDOOR RESET

RELIEF VALVE
UP TO 100PSI

SUB 20PPM NOx

STACKABLE

Low
NOx

2

PAG E

Apex Boiler FEATURES

High Performance Commercial Hydronic
and Radiant Heating

Introducing the Apex from Burnham Commercial, a condensing
boiler with thermal eciency 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 and system eciency
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-certied
stainless steel heat
exchanger. Each heat
exchanger is factory
hydro-tested to ensure
quality and reliability.

• FLEXIBILITY OF VENTING OPTIONS

The ability to vent by using PVC material provides
multiple venting options and enables a greater level
of choice concerning the layout of a boiler room. Apex
boilers can be vented horizontally with a sidewall
penetration, or vertically. In addition to PVC, the Apex
can be vented with concentric polypropylene (500 model
only), AL29-4C stainless steel piping or with single wall
rigid and/or exible polypropylene vent piping.

The Apex Boiler Control System

The Apex Boiler Control System (ABC System) has many features
which maximize the eciency and comfort of a heating system,
while providing unmatched ease of use (for a full description of
these features, please see pages 4–5).

• LCD 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

ring rate output

• Built in provision for o-season pump exercising

• Plug and play connections

• Multiple and adjustable pump outputs

• Night setback and unoccupied modes

• 4–20mA and modbus inputs

• EMS Gateway to BacNet, LonWorks®, Modbus (optional)

3

PAG E

Apex Boiler FEATURES

Single Point Power

Boiler pump and DHW
pump are powered
directly from the Apex

Sealed Combustion
with Negative
Cabinet Pressure

Lower portion of the
boiler cabinet operates
under a negative pressure,
creating an additional
layer of safety

Simple
Connections

All gas, water and
electrical connections
are made from the left
side of the boiler

Condensate
Protection

Unique polyproplyene
condensate trap
(patented) stands up to
acidic condensate and
features an integral oat
switch which protects
the heat exchanger from
condensate back-up

Sealed
Top Panel

The sealed top panel
protects boiler controls
from spills or leaks; the
components are also
isolated from the lower
jacket to protect them
from cold or moist
combustion air

Smart Controls

ABC 2.1 control
system oers multiple
boiler lead/lag for up
to eight (8) boilers,
LCD touchscreen
display, intuitive
text-based menus
and outdoor reset

Ecient
Combustion

Air and fuel are
pre-mixed in the
blower assembly
for clean, balanced
combustion, longer
component life
and protection of
mechanical fan
components

Design
Simplicity

Separate spark rod
and ame sensor are
used for longevity
and reliability

Durable,
Ecient
Stainless Steel
Heat Exchanger

Maximizes
heat transfer