
C
DIAMETER
A 
B
HOT
WATER
CONNECTION
COLD
WATER
CONNECTION
ANODE
ROD
RELIEF VALVE
CONNECTION
8"
WATER CONNECTIONS ALL 3/4" N.P.T.
Imperial Rheemglas
Available in 40, 50, 65, 80 Gallon Models
10-Year Limited Tank and Parts Warranty*
®
Energy Miser®HIGH EFFICIENCY Electric Water Heater
High performance and recovery
•
Patented R-Foam®insulation
•
Brass drain valve
•
EverKleen™self-cleaning device
•
Lifeguard™high efficiency stainless
•
steel elements 
Temperature and pressure relief
•
Automatic thermostat keeps water at
•
desired temperature 
Compliant with many electric utility
•
incentive programs 
Meets or exceeds requirements of the
•
National Appliance Energy Conservation
Act (NAECA) 
valve included 
Isolated tank design reduces conductive
•
heat loss 
Premium grade
•
anode rod equalizes 
aggressive water action 
Electric junction box located above
•
heating elements for easy installation 
Over-temperature protector cuts off power
•
in excess temperature situations
ESCRIPTION FEATURES ROUGHING IN DIMENSIONS (SHOWN IN INCHES) ENERGY INFORMATION
D
T 
Y
GAL. FIRST HOUR IN G.P.H. HEIGHT WATER CONN. DIAMETER SHIP WT. ENERGY ANNUAL
P
AP. MODEL NUMBER RATING G.P.H. @ 90° RISE AB C(LBS.) FACTOR OPER. COST
C
E
40 83XR40-2 55 21 46-3/4 46-3/4 22-1/4 100 0.95 $492
T
50 83XR52-2 67 21 57 57 22-1/4 118 0.95 $492
A
L
65 83XR66-2 71 21 58-3/4 58-3/4 23 160 0.92 $508
L
80 83XR80-2 88 21 59 59 24-1/2 180 0.92 $508 
50 83MXR52-2 63 21 46 46 24-1/4 130 0.93 $503
MED.
• Heaters furnished with standard 240 volt AC, single phase non-simultaneous wiring, and 4500 watt upper and lower heating elements.
• If heating elements of different wattages than those shown are demanded by zone requirements, they must be specifically 
requested.
• Special Wiring Options – A limited number of special wiring options are available. Consult factory for price and availability.
• All models equipped with heat traps.
RECOVERY TANK HEIGHT TO APPROX. AVERAGE
*See Residential Warranty Information Brochure for complete
warranty information.
nergy Factor and Average Annual Operating
E
osts based on D.O.E.(Department of
C
nergy) test procedures. D.O.E. national
E
verage fuel rate electricity 10.65¢/KWH.
a
Recovery = wattage/2.42 x temp. rise °F.
Example:
4500W
2.42 x 90°
= 21 GPH
These units are designed 
to meet or exceed ANSI 
(American National Standards 
Institute) requirements and 
have been tested according 
to D.O.E. test procedures and 
meet or exceed the energy 
efficiency requirements of 
NAECA, ASHRAE standard 90, 
ICC Code and all state energy 
efficiency performance criteria 
for energy consuming 
appliances.
Before purchasing this 
appliance, read important 
energy cost and efficiency 
information available from 
your supplier.
In keeping with its policy of continuous progress and product improvement, Rheem reserves the right to make changes without notice.
Lifeguard™Electric Element
High density nichrome wire electric 
heating filament; best grade A, 80/20 
nichrome wire made…for top 
performance and long-life operation.
High-grade magnesium oxide 
packing moves the heat 
quickly to the element’s 
surface, protecting the 
nichrome wire filament and 
boosting efficiency.
Steel screw-in head 
provides solid construction 
and ease of maintenance.
INCOLOY®840 stainless steel sheath, 
resists water chemical corrosion and 
burn-out even in air or sediment for 
long element life, long life performance.
Low watt density design delivers 
full watt-rated heating power to 
a larger surface area, eliminating 
high heat concentrations and 
prolonging element life.
Rheem Water Heating • 101 Bell Road, Montgomery, Alabama 36117-4305 • www.rheem.com
P R I N T E D I N U . S . A 1 1 / 0 9 WP F O R M N O. 10 1 - 1 9 R ev . 2