Install Instructions

5
Ratings
Maximum allowed working pressure is located on the rating plate.
NOTICE
Installation & Service Manual
Notes:
1. The ratings are based on standard test procedures
prescribed by the United States Department of Energy.
2. Net AHRI 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. Copper-fins require special gas venting. Use only the vent
materials and methods specified in the Installation and
Service Manual.
4. The Copper-fin is orificed for operation up to 2000
feet altitude. The ap pli ance will be derated 4% per 1000
feet above 2000 feet el e va tion. Consult the factory for
installations above 2000 feet elevation.
5. Ratings have been confirmed by AHRI.
Figure A High Altitude Label Location
UNIT EQUIPPED FOR
HIGH ALTITUDE
UP TO 2000 FT.
Copper-Fin
AHRI Rating
Model Number
Note: Change
“N” to “L” for
L.P. gas models
Input
MBH
(Note 4)
Gross
Output
MBH
(Note 1)
Net
AHRI
Ratings
Water,
MBH
(Note 2)
MIN MAX
CBN315 157.5 315 258 224
CBN360 180 360 295 257
CBN399 199.5 399 327 285
CBN500 250 500 410 357
Other Specifications
Boiler
Water
Content
Gallons
Water
Connections
Gas
Connections
Vent Size
(Note 3)
1.2
2" 3/4" 8"
1.2
2" 1" 9"
1.3
2" 1" 10"
1.4 2" 1" 10"