Lochinvar KNIGHT XL KBN399 manual

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Table of contents for the manual

  • Page 1

    Up t o 94.6% T her mal Efficien cy lochinvar . co m HIGH EFFICIENCY C OMMERCIAL C ONDENSING BOILERS OPERA TING C ONTROL FEA TURING A BUIL T -IN CAS CADING SEQUENCER 5 MODELS: 399,000 – 800,000 BTU/HR FIRING RA TE MODULA TION T O 5:1 LES S THAN 20 ppm NOx DIRECT - VENT FLEXIBILITY T O 100 FEET O PERA TING C O NTR O L F E A[...]

  • Page 2

    The KNIGHT ® XL, engineered with Lochinvar’s exclusive SMART SYSTEM ™ control and an array of other innovative features, places it far ahead of any commercial heating boiler in its class. It promises and delivers ultimate ease of installation and maintenance. With up to 94.6% thermal efficiency, low-NOx emissions and a fully modulating burner,[...]

  • Page 3

    T he Brain T ha t Dri v es Brillian t Perf ormanc e! SMAR T SY STEM pr ovides u nequall ed contr ol and monitoring functions that are e asy to underst and and use. 2-Line, 16-Chara cter L CD Displa y Setup and diagnostic information in words, not codes P assword Securi ty Dual password levels for installer and user Building Managemen t S ystem C on[...]

  • Page 4

    In commercial buildings requiring a multiple boiler system, modulating operation of individual units should be sequenced so that the system functions as an integrated whole. SMART SYSTEM includes a built-in cascading sequencer for up to 8 KNIGHT XL units. This eliminates the initial cost and labor required with installation of a separate sequencer.[...]

  • Page 5

    Easy Handling on t he Job si t e Because of its compact design and stainless steel heat exchanger, KNIGHT XL boilers are remarkably lightweight and easy to handle on the jobsite. Direct - V en ting up t o 100 Feet KNIGHT XL offers tremendous flexibility for placement of units within the building, because it permits direct-vent air intake and exhaus[...]

  • Page 6

    > Low V oltag e T ermi nal Strip > 24 V AC Auxiliary Devi c e Relay > Auxiliary Proving Switch C ontacts > Flow Sw itc h Cont acts > Alarm on Any Failure C ontacts > Runtime C ontacts > DHW Thermostat C ontacts > Room Thermostat C ontacts > System Sen sor Contacts > DHW T ank Sensor Cont acts > Outdoor Air Sensor C [...]