Ratings - Lochinvar 400 Installation & Operation Manual

Ratings

Model Number
Note: Change "N" to
"L" for L.P. gas models.
Min
KBN400 80
KBN501 100
KBN601 120
KBN701 140
KBN801 160
Maximum allowed working pressure is located on the rating plate.
NOTICE
Notes:
1. The ratings are based on standard test procedures
prescribed by the United States Department of Energy.
2. 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.
3. Knight XL boilers require special gas venting. Use only the
vent materials and methods specified in the Knight XL
Installation and Operation Manual.
4. Standard Knight XL boilers are equipped to operate from
sea level to 4,500 feet only with no adjustments. The boiler
will de-rate by 4% for each 1,000 feet above sea level up to
4,500 feet.
5. High altitude Knight XL boilers are equipped to operate
from 3,000 to 12,000 feet only with no field adjustments.
The boiler will de-rate by 2% for each 1,000 feet above
3,000 feet. High altitude models are manufactured with a
different control module for altitude operation, but the
operation given in this manual remains the same as the
standard boilers. A high altitude label (as shown in FIG. A)
is also affixed to the unit.
6. Ratings have been confirmed by the Hydronics Institute,
Section of AHRI.
Knight XL Boiler
I=B=R Rating
Input
Gross
MBH
Output
MBH
(Note 4)
(Note 1)
Max
399 373
500 467
600 567
700 660
800 752
Installation & Operation Manual
Other Specifications
Net
I=B=R
Boiler
Ratings
Water
Water,
Content Connections
MBH
Gallons
(Note 2)
324
3.4
406
4.2
4.2
493
5.0
574
654 5.7
7. Knight XL boilers comply with the requirements of CSD-1
Section CW-400 requirements as a temperature operation
control. The manual reset high limit provided with the
Knight XL is listed to UL353.
Figure A High Altitude Label Location
Air
Water Gas
Connections
Size
1-1/2" 1" 4"
1-1/2" 1" 4"
2" 1" 4"
2" 1" 4"
2" 1" 4"
UNIT EQUIPPED FOR
HIGH ALTITUDE
3000 FT. TO 12,000 FT.
Vent
Size
(Note 3)
4"
4"
4"
6"
6"
7