Ratings, Copper-fin specifications, Installation & service manual – Lochinvar COPPER-FIN 497 - 2067 User Manual
Page 9
9
Ratings
(continued)
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_water heater
HIGH ALTITUDE
LABEL
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)
CWN497
495
1.7
2"
1 1/4"
6"
CWN647
645
2.0
2"
1 1/4"
8"
CWN747
745
2.1
2"
1 1/4"
8"
CWN987
985
2.2
2 1/2"
2"
10"
CWN1257
1255
2.6
2 1/2"
2"
12"
CWN1437
1435
2.9
2 1/2"
2"
12"
CWN1797
1797
3.3
2 1/2"
2"
14"
CWN2067
2065
3.6
2 1/2"
2"
14"
Maximum allowed working pressure is located on the rating plate.
NOTICE
Installation & Service Manual