Alpine Sage2.1 Control Overview

Burnham Sage2.1 Boiler Control System (SBC2.1) – Overview (con’t)

U.S. Boiler Company – August, 2010 Page 3 of 8

• Freeze Protection: If possible freezing water temperatures are detected, the

Sage2.1 will operate all pumps connected to the boiler. If water temperatures continue

to drop, the boiler will operate and heat the system slightly in order to prevent freezing

and damage to the system.

• Pump Exercise: If a circulator that is connected to the Sage2.1 control does not

operate for seven (7) days, it is activated to run for twenty (20) seconds. This feature

reduces the possibility for pumps to seize and fail due to long periods of inactivity,

improving the overall reliability of the heating system.

• Control Flexibility: The Sage2.1 control can respond to

multiple heating demands, and features adjustable pump

outputs, allowing for greater installation and piping flexibility.

With the touch of a button, pump outputs can be selected for

the boiler, the system, and the domestic hot water pumps. For

example, touch screen selections allow the user to set the

control for either an indirect water heater installed in a boiler

loop or in a system loop. This feature allows full pump control

for an indirect water heater piped off the system loop,

eliminating the costs of additional field-supplied relays, controls,

or wiring. And in some cases, additional savings can be

achieved by reducing the pump size for the indirect water heater.

• Adaptable Firing Rate Output: The Sage2.1 can be set to respond differently to

various heat demands. This feature allows the boiler’s output to be adjusted for varying

heat loads connected to the system. For example, the boiler can be set to fire at full rate

for a DHW demand; while for a space heating demand, the Sage2.1 will limit the maximum

firing rate in systems where the domestic hot water demand requires more Btu’s than space

heating. This feature reduces boiler cycling, wear and tear on parts, and enhances heating

efficiency and comfort.

• “Plug & Go” Multiple Boiler Control Sequencer: When multiple boilers are

installed, the Sequencer that is built into the Sage2.1 may be used to coordinate and

optimize the operation of up to eight (8) Sage2.1 equipped boilers. Boilers are connected

to a boiler-to-boiler

communication network

by simply "plugging-in"

standard RJ45 cables –

which can be purchased

at most electronics

stores, electric supply

distributors, & office

supply stores, or by

hard wiring between the

control panels of

multiple boilers.

Burnham Sage2.1

Control Module

Typical RJ45 Splitte