Up to 94.6% Thermal Efficiency | Lochinvar KBN500, KBN399 instruction

H I G H E F F I C I E N C Y C O M M E R C I A L C O N D E N S I N G B O I L E R S

OPERATINGOPERATING CONTROLCONTROL FEATURING

A BUILT-IN CASCADING SEQUENCER

5 MODELS: 399,000 – 800,000 BTU/HR

FIRING RATE MODULATION TO 5:1

LESS THAN 20 ppm NOx

DIRECT-VENT FLEXIBILITY TO 100 FEET

Up to 94.6%

l o c h i n v a r . c o m

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