Installation & Operation Manual
7
Ratings
Notes:
1.
As an Energy Star Partner, Lochinvar has determined that
Knight boilers meet the Energy Star guidelines for energy
efficiency.
2.
The ratings are based on standard test procedures
prescribed by the United States Department of Energy.
3.
Net I=B=R ratings are based on net installed radiation of
sufficient quantity for the requirements of the building and
nothing need be added for normal piping and pickup.
Ratings are based on a piping and pickup allowance of 1.15.
4.
Knight boilers require special gas venting. Use only the vent
materials and methods specified in the Knight Installation
and Operation Manual.
5.
Standard Knight boilers are equipped for operation up to
4,500 feet with no field adjustments. Output ratings will be
reduced by 4% for each 1,000 feet above sea level up to
4,500 feet only.
6.
High altitude Knight boilers will have a high altitude label
affixed to the unit (as shown in FIG. A) and are equipped
for operation of 4,501 feet to 12,000 feet only with no field
adjustments. For high altitude models, output ratings will
be reduced by 2% for each 1,000 feet above sea level.
High altitude models have a different control module for
altitude operation, but the operation given in this manual
for standard models remains the same.
7.
Ratings have been confirmed by the Hydronics Institute,
Section of AHRI.
Maximum allowed working pressure is located on the rating plate.
NOTICE
Knight Boiler
I=B=R Rating
Model Number
Note: Change “N” to
“L” for L.P. gas models.
Input
MBH
(Note 5)
Min Max
Gross
Output
MBH
(Note 2,7)
Net
I=B=R
Ratings
Water,
MBH
(Note 3,7)
KBN080
16
80
72
63
KBN105
21
105
94
82
KBN150
30
150
135
117
KBN210
42
210
190
165
KBN285
57
285
260
226
Other Specifications
Boiler
Water
Content
Gallons
Water
Connections
Gas
Connections
Air
Size
Vent
Size
(Note 4)
0.6
1"
1/2"
3"
3"
0.7
1"
1/2"
3"
3"
1.3
1"
1/2"
3"
3"
1.7
1"
1/2"
3"
3"
2.4
1-1/4"
3/4"
4"
4"
Figure A
High Altitude Label Location
UNIT EQUIPPED FOR
4,501 FT. TO 12,000 FT.
HIGH ALTITUDE
