Product Overview

Lochinvar, LLC
300 Maddox Simpson Parkway
Lebanon, Tennessee 37090
P: 615.889.8900 / F: 615.547.1000
Lochinvar.com
NKC-05 (Reprint NKC-05 1/20) Patent Pending
ASB-5K-8/2020-Printed in U.S.A.
Notes: Indoor installation only. All information subject to change. 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.
SMART CONTROL
™
FEATURES
> SMART CONTROL Digital Operating Control
LCD Display with words not codes
> Outdoor Reset Control with Outdoor
Air Sensor
> Programmable System Efficiency Optimizers
DHW Response Time
DHW Pre Heat
Outdoor Air Reset Curve
> Two Pump Control
System Pump
Boiler Pump
> High-Voltage Junction Box
120 VAC / 60 Hertz / 1 Phase Power Supply
> Low Voltage Terminal Strip
Air Handler Interlock
Flow Switch Contacts
Low-Water Cutoff Connection
System Sensor Contacts
Outdoor Air Sensor Contacts
Cascade Contacts
> Time Clock for Data Logging
Last 10 Lockouts
> Low-Water Flow Safety Control & Indication
> Password Security
> Built-in Cascading Sequencer for
up to 8 units
STANDARD FEATURES
> ENERGY STAR Most Efficient Recognition
> 95% DOE AFUE Efficiency
> Modulating Burner with 10:1 Turndown
Direct-Spark Ignition
Low-NOx Operation
> ASME Stainless Steel Heat Exchanger
50 psi Working Pressure w/ASME Relief Valve
> Vertical & Horizontal Direct-Vent
PVC, CPVC, Polypropylene or SS Venting
up to 100 feet
> Condensate Trap
> Other Features
Automatic Reset High Limit
Adjustable High Limit w/Manual Reset
Built-in Circulating Pump
Wall-Mount Bracket
Zero Clearances to Combustible Materials
10-Year Warranty
(See Warranty for Details)
5-Year Parts Warranty
OPTIONAL EQUIPMENT
Low-Water Cutoff w/Manual Reset & Test
Concentric Vent Kit
Condensate Neutralization Kit
Sidewall Vent Termination
Floor Stand
Wireless Outdoor Sensor
Nat to LP Gas Conversion Kit
Isolation/Flush Valves
DHW Piping Kit
Primary Secondary Piping Kit
FIRING CODES
> M9 Standard Construction/California Code
B
A
C
AIR INTAKE
FLUE
RELIEF VALVE
GAS
CONDENSATE
HIGH VOLTAGE
CONNECTIONS
WATER
INLET/OUTLET
E
D
G
I
F
H
K
J
L
Q
M N T U
P
O
S
R
D
I
G
F
E
H
NKC110
2000534158
Q
R
O
P
N
M
B
A
C
AIR INTAKE
FLUE
RELIEF VALVE
GAS
CONDENSATE
HIGH VOLTAGE
CONNECTIONS
WATER
INLET/OUTLET
E
D
G
I
F
H
K
J
L
Q
M N T U
P
O
S
R
D
I
G
F
E
H
NKC110
2000534158
B
A
C
AIR INTAKE
FLUE
RELIEF VALVE
GAS
CONDENSATE
HIGH VOLTAGE
CONNECTIONS
WATER
INLET/OUTLET
E
D
G
I
F
H
K
J
L
Q
M N T U
P
O
S
R
D
I
G
F
E
H
NKC110
2000534158
C
B
A
C
AIR INTAKE
FLUE
RELIEF VALVE
GAS
CONDENSATE
HIGH VOLTAGE
CONNECTIONS
WATER
INLET/OUTLET
E
D
G
I
F
H
K
J
L
Q
M N T U
P
O
S
R
D
I
G
F
E
H
NKC110
2000534158
NKC110
TOP
NKC 150-199
TOP
BOTTOM
FRONT
*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.
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NOBLE COMBI BOILER DIMENSIONS AND SPECIFICATIONS
Heating Net AHRI
Model Input (MBH) Capacity Rating
Number Max. Min. AFUE% MBH MBH A B C D E F G
2" 3-1/2" 8-3/4" 13-1/2" 2-3/4" 9" 10-1/2" 5" 14-1/2" 12-3/4" 5" 1/2" 1" 3" 3" 139
2-1/2" 6-1/4" 2-3/4" 13-1/2" 3" 9" 11-1/2" 5" 6-1/4" 13-3/4" 6" 1/2" 1" 3" 3" 142
2-1/4" 5-1/2" 2-3/4" 13-1/2" 2-3/4" 9-1/2" 10-1/2" 2-3/4" 5-1/2" 13" 5-1/4" 1/2" 1" 3" 3" 159
H I J K L M N O P Q R Gas Water Air Vent Ship
Conn. Conn. Inlet Size Wt.
NKC110N 110 11 95.0 102 89 32-1/2" 17-1/4" 18" 14-3/4" 2-3/4" 6-1/2" 2-3/4"
NKC150N 150 15 95.0 139 121 32-1/2" 18-3/4" 18" 6-3/4" 2-3/4" 6-3/4" 11-3/4"
NKC199N 199 19.9 95.0 185 161 32-1/2" 18-3/4" 18" 5-1/2" 2-3/4" 6-3/4" 11-1/2"
DIMENSIONS AND SPECIFICATIONS
Model
77°
Temp. Rise
70°
Temp. Rise
NKC110N
2.6
2.9
NKC150N 3.6
3.9
NKC199N 4.8
5.2
DHW Delivery (GPM)
NOBLE COMBI BOILER DIMENSIONS AND SPECIFICATIONS