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6
Ratings
Installation & Service Manual
Notes:
1. Copper-fins require special gas venting. Use only the vent
materials and methods specified in the Installation and
Service Manual.
2. 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.
Figure B High Altitude Label Location
UNIT EQUIPPED FOR
HIGH ALTITUDE
UP TO 2000 FT.
Copper-fin Specifications
Model Number
Note: Change “N” to
“L” for L.P. gas models
Input
MBH
Water
Content Gallons
Water Connections Gas Connections
Vent Size
(Note 1)
CWN090 90 .91 2” 1/2” 5”
CWN135 135 .95 2” 1/2” 6”
CWN180 180 .99 2” 3/4” 7”
CWN199 199 1.02 2” 3/4” 7”
CWN225 225 1.02 2” 3/4” 7”
CWN270 270 1.06 2” 3/4” 8”
CWN315
315 1.09 2" 3/4" 8"
CWN360
360 1.12 2" 1" 9"
CWN399
399 1.22 2" 1" 10"
CWN500
500 1.30 2" 1" 10"
Maximum allowed working pressure is located on the rating plate.
NOTICE