Lochinvar KNIGHT KBN081 Brochure & Specs Download Page 4

Factory Supplied and Shipped with Every Model

Sidewall 

Vent 

Termination

*

Exclusive feature, available only from Lochinvar

5 Flexible Options for Direct-Venting up to 100 Feet! 

Placement of units within a building will never be a problem with KNIGHT. 
It permits up to 100 feet of air intake and 100 feet of exhaust vent with
3" PVC, CPVC, polypropylene or stainless steel pipe. Three Wall-Mounted 
KNIGHT

 

models (WBN 51 -106) also permit intake and vent runs up to 40 

feet using 2" pipe. 

Direct-Vent Vertical

Vertical with Sidewall Air

Direct-Vent Vertical*

Direct-Vent Sidewall*

Direct-Vent Sidewall

NEW! 

Compatibility with Copper Fin II 

Non-Condensing Boiler

Allows you to create a front end loading system. 

NEW! 

Multiple Sized Boiler Cascade 

Control 

KNIGHTS of one or more sizes can be combined 
into a single cascade to maximize turndown and 
meet minimum demands. 

* Internal Cascading Sequencer 

with Multiple Programmable 

System Efficiency Optimizers

Fine-tune installations using Lead-Lag or 

Efficiency Optimization Cascade features. 

* Controls up to Three 

Setpoint Temperatures 

Allows three different temperature inputs to 
be controlled. Boiler can be run at the lowest 
temperature demand for optimal efficiency. 

* Outdoor Reset for Each Temp Loop 

The boiler setpoint temperature responds to changes 
in outdoor air temperature. Outdoor temperature 

monitor guides the reset schedule to meet the load.

Night Setback

Program a heating loop temperature setback for 

any time of the day, each day of the week.

Domestic Hot Water 

Prioritization w/Pump Control

On DHW call, SMART SYSTEM overrides the 
outdoor reset and starts the DHW pump to the 
indirect water heater alternating to meet both 

heating and hot water demands.

* DHW Night Setback 

Resets DHW setpoint to save water-heating 

energy during times of low or no usage.

* DHW Max Firing Rate

Allows you to limit the maximum percentage of 
firing rate when in DHW mode.

* Separately Adjustable

SH/DHW Mode Switching Times

Allows controls to be tailored to meet system 
demand. Design system setup for flexibility.

Indirect Water Heater 

Zone Pump Control

All boilers in cascade can be used to meet DHW 
demand as well as satisfy building load. 

System & Boiler Pump Controls

Provides power to system and boiler pumps on 
a call for heat. Programmable post purge allows 
pumps to operate after a call has been satisfied. 
Option for Continuous System Pump Operation.

* Pump Relay  with 

Freeze Protection

Parameters adjustable by installer for flexibility in 
low-temperature applications.

* Installer Access to 

BMS and Ramp Delay Settings

Set up or change these parameters through the control 

itself on the front of the boiler; no PC software required.

Low-Water Flow Indicator 

Uses temperature differential to protect 
against low flow in heat exchanger by reducing 
modulation or forcing boiler shutdown.

Password Security

Allows only qualified personnel to access 
parameters

* Product Service Indicator

Program reminders for cycle count, operation 
hours or last service. Installer's name and 
number may be displayed.

Optional Modbus Capability

Allows boiler communication through Modbus 
protocol. Simplifies BMS/boiler interface for 
status monitoring.

0-10V Building Management 

System (BMS) Control Input

BMS-driven input for modulation rate or 
temperature control.

0-10V Cascade Setpoint 

and Modulation Control

BMS-driven input for modulation rate or 
temperature control of cascade. 

0-10V Heat Demand Input

Enables thermostat or a 0-10V signal to initiate 
a call for heat. Gives the BMS options on how to 
enable boiler or cascade.

0-10V Boiler Rate Output

Signal output of modulation rate allows BMS to 
monitor boiler firing rate.

0-10V Pump Signal Input

Input from variable speed system pump allows 
faster reaction to changes of flow in system, 
reducing possibility of temperature over-shoot 
and cycling.

0-10V Signal to Control Variable 

Speed Boiler Pump

Allows control to maintain a higher 

T at low 

firing rates and reduces boiler flow when it 
responds to lower flow rates in the system loop.

Dial in System Performance

*An optional concentric vent kit is sold separately to allow a single penetration for both combustion air and vent pipes.

Building 

Management 

Inputs & Outputs

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