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RESIDENTIAL TANK TYPE
GAS, ELECTRIC & SOLAR
COMMERCIAL TANK TYPE GAS
LIGHT DUTY COMMERCIAL ELECTRIC
EXPLOSION RESISTANT ELECTRIC ALL YEARS
JACKETED TANKS (RJS & RJA)
STANDARD HI-POWERS (HS&HC)
COMPACT ASME HI-POWER
OIL FIRED
The above series has a two letter, six or seven number
system, which is used to distinguish the warranty date.
Example: KJ-1000130...Built in September of 1993
The first letter signifies the year produced.
The second letter signifies the month produced.
The remaining numbers are production codes.
ST
1
LETTER
A
= 2004
B
= 2005
C
= 2006
D
= 2007
E
=2008
F
= 2009
G
= 2010
H
= 1991
J
= 1992
K
= 1993
L
= 1994
M
= 1995
N
= 1996
P
= 1997
S
= 1998
T
= 1999
W
= 2000
X
= 2001
Y
= 2002
Z
= 2003
DATA PLATE LOCATION:
A. Commercial Tank Type Gas, Oil Fired:
Approximately half-way down the jacket on the front
of the heater.
B. Residential Tank Type Gas, Electric and Solar,
Light Duty Commercial and Explosion Resistant
Electric, Jacketed Tanks:
Below the Lochinvar logo, approximately in the
middle of the tank.
C. Standard Hi-Power & Compact ASME Hi-Power:
The upper right side of the jacket on the front of the
heater.
Note: Residential products prior to serial number prefix
SA have a five (5) year limited warranty.
Products starting with serial number prefix SA
have a six (6) year limited warranty.
ALL YEARS
ALL YEARS
ALL YEARS
1986-Present
1997-Present
1997-Present
1992-2006
ND
2
LETTER
A = January
B = February
C = March
D = April
E
= May
F
= June
G = July
H = August
J
= September
K = October
L
= November
M = December
ELECTRIC BOOSTERS (SB)
Booster serial numbers have ten numbers.
The first six numbers are production related.
The seventh & eighth number indicates year produced.
The final ninth or tenth numbers equal month produced.
Example: 1234569708...Built in August of 1997
TH
TH
7
AND 8
NUMBER
99 = 1999
00 = 2000
01 = 2001
02 = 2002
03 = 2003
04 = 2004
05 = 2005
06 = 2006
07 = 2007
08 = 2008
09 = 2009
10 = 2010
DATA PLATE LOCATION:
On the lower right corner of the jacket,
from the front view.
NOTE: RJA120 tanks manufactured after 2004
are listed in the warranty table on page 3.
2
(1978-Present)
TH
TH
9
AND 10
NUMBER
01
= January
02
= February
03
= March
04
= April
05
= May
06
= June
07
= July
08
= August
09
= September
10
= October
11
= November
12
= December
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