Specification

Energy Savings
Up to 96% AFUE operating efficiency
Reduces heating costs
Outdoor reset lowers operating set point
automatically to increase system eciency
Modulating burner input matches system
load, conserving energy and increasing
system efficiency
Low NOx emission - Reduces
environmental impact
Combustion
Turndown up to 5:1
Matches heating load automatically
Modulate combustion fan down to
20% of firing rate
Target temperature can be maintained
as heating demand increases or
decreases providing greater comfort
by eliminating temperature swings
in the heating system
High Eciency Fire Tube Heating Boiler
Look Inside the EFT-399
Stainless Steel Fire Tube
Heat Exchanger
Down fire design, promotes self
cleaning of combustion system
Durable high grade stainless steel
construction provides extended service life
Increased thermal mass provides low
pressure drop and eliminates short cycling
Compatible with glycol based systems
Built-in condensate collection system