Brochure

MULTIPLE BOILER
SEQUENCING
The flexibility of the Evergreen
boiler system reduces setup
time and keeps costs down.
THREE SELECTABLE
SEQUENCING MODES
TO CHOOSE FROM

Series Sequencing
Quickest- boiler goes
to 100% before another
boiler is turned on;
output is achieved more
quickly with less total
burner hours

Parallel Sequencing
Eciency and speed-
based on Base Rate High;
Hybrid mode between
Smart and Series modes;
boilers will go to user-
programmed base rate
high before turning on
the next boiler

SmartSequencing™
Most ecient- maximizes
part-load eciency
by turning on as many
boilers as possible
PROGRAMMABLE
PREFERENCES FOR
MULTIPLE BOILER
SETUPS

Multiple Boiler
Sequencing
User selects what
point one boiler stops
modulating before
turning on another boiler

Lead Lag Rotation
User selects which boiler
turns on first and can
choose based on burner
hours, fixed rotation or
no rotation

Input/Output Options
Input and outputs can be
used for every boiler with
up to 24 capable input/
output pairs

Redundant Sensors
If one system supply or
outdoor temperature
sensor fails, there are
backups. If backups fail,
the system can still run
on a special safety mode

Auxiliary Output
Flexibility
Ability to control system
circulators, combustion
air dampers and/or
other auxiliary system
components