Brochure

M
N
O
L
B
FLUE
COIN VENT
AIR VENT
F
E
H
I
J
K
G
D
INLET
OUTLET
LOW VOLTAGE
ELECTRICAL
CONNECTIONS
HIGH VOLTAGE
ELECTRICAL
CONNECTIONS
CONDENSATE
DRAIN
A
C
2000544065
Information subject to change without notice. Change “N” to “L” for LP gas models.
The Net AHRI Water Ratings shown are based on a piping and pickup allowance of 1.15. Lochinvar should be consulted
before selecting a boiler for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc. The ratings have been determined
under the provisions governing forced draft burners.
KNIGHT Boiler Dimensions and Specifications
WHN-05 (Replaces WHN-04 5/16)
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Lochinvar, LLC
300 Maddox Simpson Parkway
Lebanon, Tennessee 37090
P: 615.889.8900 / F: 615.547.1000
Lochinvar.com
KNIGHT Boiler
Dimensions and Specifications
Top
Right
Bottom
Smart System Features
> Smart System Digital Operating Control
Multi-Color Graphic LCD Display w/Navigation Dial,
Soft Keys and Loch-N-Link USB programming
> Three Boiler Setpoint Temperature Inputs
Plus Domestic Hot Water Prioritization
> Built-in Cascading Sequencer for up to 8 Boilers,
with Cascade Redundancy
Multiple Size Boiler Cascade
Lead Lag
Efficiency Optimization
Front End Loading Capability
> Outdoor Reset Control with Outdoor Air Sensor
Programmable for Three Reset Temperature Inputs
> Programmable System Efficiency Optimizers
SH Night Setback
DHW Night Setback
Anti-Cycling
Outdoor Air Reset Curve
Ramp Delay
Modulation Factor Control
Boost Temperature & Time
> Four Pump Control
System Pump with Parameter for Continuous Operation
Boiler Pump with Variable Speed Control
Domestic Hot Water Pump
Domestic Hot Water Recirculation
> Domestic Hot Water Prioritization
DHW tank piped with priority in the boiler loop
DHW tank piped as a zone in the system with the pumps
controlled by the SMART SYSTEM
DHW Modulation Limiting
Separately Adjustable Space Heat/DHW Switching Times
> Building Management System Integration
0-10 VDC Input to Control Modulation or Setpoint
0-10 VDC Modulation Rate Output
0-10 VDC Input to Enable/Disable Call for Heat
> Access to BMS Settings through Graphic LCD Display
> High-Voltage Terminal Strip
120 VAC / 60 Hertz / 1 Phase Power Supply
Three Sets of Pump Contacts
> Low-Voltage Terminal Strip
DHW Recirculation Pump Start/Stop
24 VAC Device Relay
Proving Switch Contacts
Flow Switch Contacts
Alarm on Any Failure Contacts
Runtime Contacts
DHW Thermostat Contacts
3 Space Heat Thermostat Contacts
System Sensor Contacts
DHW Tank Sensor Contacts
Outdoor Air Sensor Contacts
Cascade Contacts
0-10 VDC BMS External Control Contact
0-10 VDC Boiler Rate Output Contacts
0-10 VDC Variable Speed System Pump Signal Input
0-10 VDC Signal to Control Variable Speed Boiler Pump
Modbus Contacts
> Time Clock
> Data Logging
Hours Running, Space Heating
Hours Running, Domestic Hot Water
Ignition Attempts
Last 10 Lockouts
> Maintenance Reminder
Custom Maintenance Reminder with
Contractor Contact Information
Installer Ability to De-activate Service Reminder
> Low-Water Flow Safety Control & Indication
> Password Security
> Customizable Freeze Protection Parameters
Standard Features
> 95% DOE AFUE Efficiency (56-286)
> Modulating Burner with up to 10:1 Turndown**
Direct Spark Ignition
Low NOx Operation
> ASME Stainless Steel Heat Exchanger
30 PSI ASME Relief Valve
> Top and bottom water connections (MNPT)**
> Vertical & Horizontal Direct Vent
PVC, CPVC, Polypropylene or SS Venting up to 100 feet
> SMART SYSTEM Control
> Condensate Trap
> Other Features
Automatic Reset High Limit
Adjustable High Limit w/Manual Reset
Boiler Circulating Pump
Zero Clearances to Combustible Materials
15-Year Limited Warranty (See Warranty for Details)
5-Year Limited Parts Warranty
Optional Equipment
CON·X·US Remote Connectivity
Modbus Communication
BACnet MSTP
Flow Switch
Low-Water Cutoff w/Manual Reset & Test
Alarm Bell
Concentric Vent Kit
Condensate Neutralization Kit
BMS Gateway to LON or BACnet IP
Multi-Temperature Loop Control
Sidewall Vent Termination
Wireless Outdoor Sensor
LP Gas Conversion Kit
> Firing Codes
M9 Standard Construction
M7 California Code
**10:1 Turndown ratio and top and bottom water connections are not included on WHN400. See dimensional chart for specific product information. WHN400 is rated in
Thermal Efficiency.
Input Heating Net AHRI
Model Max. Min. Capacity Rating
Number MBH MBH AFUE % MBH MBH
WHN056 55 11 95 51 44
WHN086 85 17 95 79 69
WHN111 110 22 95 102 89
WHN156 155 31 95 144 125
WHN200 199.9 40 95 185 161
WHN286 285 57 95 264 229
WHN400 399 80 94.4 377 328
A B C D E F G H I J K L M N O Gas Water Air Vent Shipping
Conn. Conn. Inlet Size Wt. (lbs.)
33-1/4” 18-1/2” 16” 11-3/4” 9” 3-1/2” 3-3/4” 1-1/2” 3” 6-1/8” 7-1/4” 3-3/4” 6-1/2” 4-1/2” 8-1/2” 1/2” 1” 2” 2” 139
33-1/4” 18-1/2” 16” 11-3/4” 9” 3-1/2” 3-3/4” 1-1/2” 3” 6-1/8” 7-1/4” 3-3/4” 8-1/2” 4-1/2” 8-1/2” 1/2” 1” 2” 2” 142
33-1/4” 18-1/2” 19” 14-1/2” 8-3/2” 5” 7-3/4” 1-1/8” 12-3/8” 4-1/4” 11-1/4” 3” 5-1/4” 5-1/8” 10” 1/2” 1” 3” 3” 159
33-1/4” 18-1/2” 19” 14-1/2” 8-1/2” 5” 7-3/4” 1-1/8” 12-3/8” 4-/14” 11-1/4” 3” 5-1/4” 5-1/8” 10” 1/2” 1” 3” 3” 166
33-1/4” 18-1/2” 19” 14-1/2” 11” 6-1/4” 7-3/4” 1-1/2” 12-3/8” 4-1/4” 9-1/2” 3” 5-1/4” 5-1/2” 10-3/4” 1/2” 1-1/4” 3” 3” 175
33-1/4” 18-1/2” 21-3/4” 16-1/2” 11-1/8” 6-1/4” 7-3/4” 1-1/2” 12-3/8” 16-3/8” 12-1/4” 3-1/8” 5-1/4” 4” 15-1/8” 1/2” 1-1/4” 3” 3” 184
35-1/2” 25” 21-3/4” 17-1/2” 12-1/2” 9-1/4” 9-1/2” 2-1/4” 13-1/4” 21-1/2” 9” 4-3/4” 4” 22-1/2” 3-3/4” 3/4” 1-1/2” 4” 4” 213
**Not included on WHN400