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

The outdoor certified Knight operates with efficiencies up to 99% with a modulation rate turndown of 5:1. SMART SYSTEMTM operating controls offer features like cascade, outdoor reset, domestic hot water priority, and external setpoint control through the building management system utilizing 0-10 volts DC.

Lochinvar also offers custom package systems incorporating the Knight which can ease installation costs along with reducing the footprint over field fabricated equipment. They are pre-piped, skid mounted, and factory tested before leaving Lochinvar. Information on custom packaged solutions can be found at www.Lochinvar.com.

For more information on the newest member of the Knight family reference the Knight Boiler literature or visit our website www.Lochinvar.com.

Outdoor

O U T D O O R C O N D E N S I N G G A S B O I L E R S

All of the features and benefits that have made the Knight Boiler a favorite among building owners and contractors are now available in a model equipped for outdoor use.

You can now have the reliability, efficiency, and control that you require with a product designed and certified for outdoor installations.

Up to 99% Efficiency

©-8/14–Printed in U.S.A.OKB-01

Outdoor Knight Heating Boiler

A

ADJUSTABLE1/4" - 1-1/4"

A

ADJUSTABLE1/4" - 1-1/4"

F

H

J C

11-1/4"

7-3/4"15-3/4"

BACK LEFT SIDE FRONT

E

6-3/4"

15-1/2"

G

I

INLETOUTLET

FLUE

CONDENSATEDRAIN

DRAIN3/4" NPT

GAS

FLUE

INLETOUTLET

ELECTRICALCONNECTIONS

GAS

FLUE

FLUE

DRAIN3/4" NPT

CONDENSATEDRAIN

J

G F

E D

C

9-1/4"

18-3/4"

I

13-3/4"

15-3/4"8"

2"

21-3/4"

K

D

K

BACK LEFT SIDE FRONT

H (701-801)

GAS

CONNECTIONS

2"

ELECTRICAL

H(601)

H (400 - 501)

Input Input Model Min. Max. Number MBH MBH OKN151 30 150OKN211 42 210OKN286 57 285OKN400 80 399OKN501 100 500OKN601 120 600OKN701 140 700OKN801 160 800

A C D E F G H I J K Gas Water Vent Shipping Conn. Conn. Size Wt. (lbs.)31-1/4” 16-3/4” 12” 11-1/2” 10” 1-3/4” 12” 23” 9” 49-1/2” 1/2” 1” 3” 15731-1/4” 20-1/4” 16-1/2” 15-3/4” 14-1/2” 5-1/4” 16-1/2” 23” 9-1/4” 49-3/4” 1/2” 1” 3” 17242-1/2” 17-3/4” 13-1/4” 13-1/2” 6-1/4” 2-1/2” 14” 35-3/4” 9-1/4” 52” 3/4” 1-1/4” 4” 22442-1/2” 25-1/4” 21” 20-3/4” 14-1/4” 3-1/2” 7” 34” 9-3/4” 52” 1” 1-1/2” 4” 28042-1/2” 31-1/2” 21-1/4” 25” 14-1/4” 3-3/4” 3-1/2” 35-1/4” 9-3/4” 52-3/4” 1” 1-1/2” 4” 31042-1/2” 35” 21” 25” 14-1/4” 3-1/2” 4-1/2” 32-3/4” 9-1/2” 52” 1” 2” 4” 34042-1/2” 41-1/4” 23-1/4” 29-1/4” 17-1/4” 3-1/2” 3” 32-3/4” 12” 49-1/2” 1” 2” 6” 37042-1/2” 43-1/4” 23-1/4” 33-1/2” 17-1/4” 3-1/2” 3-1/4” 33” 12-1/4” 50-1/2” 1” 2” 6” 405

Notes: Outdoor installation only. All information subject to change. Change "N" to "L" for LP gas models.

Dimensions and Specifications

Outdoor Knight® Boiler Dimensions and Specifications

A

ADJUSTABLE1/4" - 1-1/4"

A

ADJUSTABLE1/4" - 1-1/4"

F

H

J C

11-1/4"

7-3/4"15-3/4"

BACK LEFT SIDE FRONT

E

6-3/4"

15-1/2"

G

I

INLETOUTLET

FLUE

CONDENSATEDRAIN

DRAIN3/4" NPT

GAS

FLUE

INLETOUTLET

ELECTRICALCONNECTIONS

GAS

FLUE

FLUE

DRAIN3/4" NPT

CONDENSATEDRAIN

J

G F

E D

C

9-1/4"

18-3/4"

I

13-3/4"

15-3/4"8"

2"

21-3/4"

K

D

K

BACK LEFT SIDE FRONT

H (701-801)

GAS

CONNECTIONS

2"

ELECTRICAL

H(601)

H (400 - 501)

A

ADJUSTABLE1/4" - 1-1/4"

A

ADJUSTABLE1/4" - 1-1/4"

F

H

J C

11-1/4"

7-3/4"15-3/4"

BACK LEFT SIDE FRONT

E

6-3/4"

15-1/2"

G

I

INLETOUTLET

FLUE

CONDENSATEDRAIN

DRAIN3/4" NPT

GAS

FLUE

INLETOUTLET

ELECTRICALCONNECTIONS

GAS

FLUE

FLUE

DRAIN3/4" NPT

CONDENSATEDRAIN

J

G F

E D

C

9-1/4"

18-3/4"

I

13-3/4"

15-3/4"8"

2"

21-3/4"

K

D

K

BACK LEFT SIDE FRONT

H (701-801)

GAS

CONNECTIONS

2"

ELECTRICAL

H(601)

H (400 - 501)

A

ADJUSTABLE1/4" - 1-1/4"

A

ADJUSTABLE1/4" - 1-1/4"

F

H

J C

11-1/4"

7-3/4"15-3/4"

BACK LEFT SIDE FRONT

E

6-3/4"

15-1/2"

G

I

INLETOUTLET

FLUE

CONDENSATEDRAIN

DRAIN3/4" NPT

GAS

FLUE

INLETOUTLET

ELECTRICALCONNECTIONS

GAS

FLUE

FLUE

DRAIN3/4" NPT

CONDENSATEDRAIN

J

G F

E D

C

9-1/4"

18-3/4"

I

13-3/4"

15-3/4"8"

2"

21-3/4"

K

D

K

BACK LEFT SIDE FRONT

H (701-801)

GAS

CONNECTIONS

2"

ELECTRICAL

H(601)

H (400 - 501)

A

ADJUSTABLE1/4" - 1-1/4"

A

ADJUSTABLE1/4" - 1-1/4"

F

H

J C

11-1/4"

7-3/4"15-3/4"

BACK LEFT SIDE FRONT

E

6-3/4"

15-1/2"

G

I

INLETOUTLET

FLUE

CONDENSATEDRAIN

DRAIN3/4" NPT

GAS

FLUE

INLETOUTLET

ELECTRICALCONNECTIONS

GAS

FLUE

FLUE

DRAIN3/4" NPT

CONDENSATEDRAIN

J

G F

E D

C

9-1/4"

18-3/4"

I

13-3/4"

15-3/4"8"

2"

21-3/4"

K

D

K

BACK LEFT SIDE FRONT

H (701-801)

GAS

CONNECTIONS

2"

ELECTRICAL

H(601)

H (400 - 501)

A

ADJUSTABLE1/4" - 1-1/4"

A

ADJUSTABLE1/4" - 1-1/4"

F

H

J C

11-1/4"

7-3/4"15-3/4"

BACK LEFT SIDE FRONT

E

6-3/4"

15-1/2"

G

I

INLETOUTLET

FLUE

CONDENSATEDRAIN

DRAIN3/4" NPT

GAS

FLUE

INLETOUTLET

ELECTRICALCONNECTIONS

GAS

FLUE

FLUE

DRAIN3/4" NPT

CONDENSATEDRAIN

J

G F

E D

C

9-1/4"

18-3/4"

I

13-3/4"

15-3/4"8"

2"

21-3/4"

K

D

K

BACK LEFT SIDE FRONT

H (701-801)

GAS

CONNECTIONS

2"

ELECTRICAL

H(601)

H (400 - 501)

Models: OKN 151-286

Models: OKN 400-801

Outdoor Standard Features > Energy Star™ Qualified (151-286)> Up to 99% Efficiency> SMART SYSTEMTM Operating Control> Modulating Burner with 5:1 Turndown > Direct-Spark Ignition > Low-NOx Operation > Field Convertible from Natural to LP Gas> ASME Stainless Steel Heat Exchanger > 30 psi ASME Relief Valve (151-286) > 50 psi ASME Relief Valve (400-801)> Outdoor Rated Vent System > UV Resistant Polypropylene (151-601) > Stainless Steel (701-801)

(models 151-286)

> Condensate Trap> Other Features > Automatic Reset High Limit > Adjustable High Limit w/Manual Reset > Adjustable Leveling Legs > Zero Clearances to Combustible Materials > 12-Year Limited Warranty (151-286) > 10-Year Limited Warranty (400-801)

Optional Equipment > Modbus Communication > Condensate Neutralization Kit > Multi Temperature Loop Control (Indoor install only) > Flow Switch > Low-Water Cutoff w/Manual Reset & Test > Alarm Bell > Boiler Circulation Pump and Pump Cover > SMART SYSTEM PC Software > BMS Gateway to LON or BacNet > High & Low Gas Pressure Switches (501-801)

Firing Codes > M9 Standard Construction > M7 California Code > M13 CSD-1 / FM / GE Gap (501-801)

Lochinvar, LLC 300 Maddox Simpson ParkwayLebanon, Tennessee 37090P: 615.889.8900 / F: 615.547.1000

www.Lochinvar.com