Rheem Water Heater 120 Gallon User Guide

Heavy Duty Electric  
Commercial Water Heaters  
Available in 50, 85 and 120 Gallon Tank-Type Models  
6 KW thru 81 KW  
Rheem-Ruud Electric Commercial Water Heaters are suitable for general commercial  
hot water applications and are also ideal for point-of-use installations. A single unit can  
be used as a booster heater to satisfy the hot water requirements of commercial dish-  
washers. A single temperature storage unit, when installed with a mixing valve, will  
supply two temperatures in food service establishments.  
Construction Features:  
• System Sentinel –  
Elements are directly immersed in the  
water for maximum recovery efficiency  
(98%) and are easily changed by sim-  
ply screwing new ones into the tank.  
LIFEGUARD elements feature a three  
(3) year limited warranty.  
immersion thermostat models employ  
an element diagnostic panel, utilizing  
light emitting diodes (L.E.D.), corre-  
sponding to the number and location  
of each heating element. This system  
monitors the on-off function of the  
electric heating elements.  
• Full port, full flow brass drain  
valve  
• Long life ASME tank design –  
proprietary steel formulation with  
high temperature porcelain enamel to  
maximize corrosion resistance result-  
ing in a superior tank design.  
• Minimal heat loss design –  
85% of the tank surface area on all  
Rheem-Ruud Commercial Electric  
products are insulated with 3" of rigid  
polyurethane foam insulation providing  
superior insulating qualities. Unlike  
other designs, Rheem-Ruud  
Commercial Electrics can achieve 85%  
because of the unique compact layout  
of the heating elements. This results  
in heat losses less than the energy  
used by a 100 watt light bulb during  
a 48 hour standby period!  
• LIFEGUARD heating elements –  
separate screw-in type elements fea-  
ture a stainless steel outer sheath of  
INCO-LOY 840, surrounding a  
Nichrome wire filament, to resist water  
chemical corrosion and burn-out even  
in air or sediment…for long element  
life and long life performance.  
208, 240,  
277 and 480  
Voltages  
Surface Mounted  
and Immersioin  
Thermostat  
Models  
Certifications and Ratings:  
®
• Efficiency in accordance with ANSI test procedures, these models tested  
below the maximum allowable standby loss levels of ASHRAE Standard  
90.1b-2001 (Part of the Federally mandated Energy Policy Act (EPact)).  
Also exceeds energy efficiency codes of all states including California Energy  
Commission (CEC).  
• Safety and construction These products are design certified by Underwriters  
Laboratories (UL) to meet UL standard 1453 as electric booster and commercial  
storage tank water heaters. All models are North Carolina code compliant.  
CERTIFIED FOR A 150 PSI MAXIMUM WORKING PRESSURE  
(160 PSI FOR ASME MODELS).  
(With Optional  
Seal Kit)  
• Optional construction ASME construction is available on immersion  
thermostat models.  
Continued on reverse.  
 
Heavy Duty Electric continued.  
MODEL NUMBERS  
SURFACE MOUNTED THERMOSTATS  
IMMERSION THERMOSTATS  
Tank Capacity In Gallons  
INPUT  
KW  
Tank Capacity In Gallons  
50  
85  
120  
50  
85  
120  
6
9
ES50-6-G  
ES50-9-G  
ES50-12-G  
ES50-15-G  
ES50-18-G  
ES50-24-G  
ES50-27-G  
ES50-30-G  
ES50-36-G  
ES50-45-G  
ES50-54-G  
N/A  
ES85-6-G  
ES85-9-G  
ES85-12-G  
ES85-15-G  
ES85-18-G  
ES85-24-G  
ES85-27-G  
ES85-30-G  
ES85-36-G  
ES85-45-G  
ES85-54-G  
N/A  
ES120-6-G  
ES120-9-G  
ES120-12-G  
ES120-15-G  
ES120-18-G  
ES120-24-G  
ES120-27-G  
ES120-30-G  
ES120-36-G  
ES120-45-G  
ES120-54-G  
N/A  
E50-6-G  
E50-9-G  
E50-12-G  
E50-15-G  
E50-18-G  
E50-24-G  
E50-27-G  
E50-30-G  
E50-36-G  
E50-45-G  
E50-54-G  
N/A  
E85-6-G  
E85-9-G  
E120-6-G  
E120-9-G  
12  
15  
18  
24  
27  
30  
36  
45  
54  
81  
E85-12-G  
E85-15-G  
E85-18-G  
E85-24-G  
E85-27-G  
E85-30-G  
E85-36-G  
E85-45-G  
E85-54-G  
E85A-81-GS  
E120-12-G  
E120-15-G  
E120-18-G  
E120-24-G  
E120-27-G  
E120-30-G  
E120-36-G  
E120-45-G  
E120-54-G  
E120A-81-GS  
• Fuse type the “G” in the model number represents Class G fuses.  
• Thermostat staging – E models (Immersion thermostat) 24 kW and above (18 kW for 208V), may be ordered  
with additional thermostat(s) for staging. Add “S” after fuse type designation. Recommended on 81kW models.  
Example: E85-36-G becomes E85-36-GS.  
• ASME construction – E models (Immersion Thermostat) may be ordered with ASME certified construction.  
Add “A” after capacity designation. Example: E85-36-G becomes E85A-36-G.  
• UL Sanitation compliance all models are UL Sanitation (NSF5) compliant when equipped with the optional  
ring seal kits. E(S)50 – AS38355, E(S)85 – AS38356, E(S)120 – AS38357.  
• Solid state low water cut-off – E models (Immersion Thermostat) may be ordered with probe type cut-off for  
field installation (AP8408).  
DIMENSIONAL INFORMATION All dimensions shown in English and Metric  
APPROX. SHIPPING  
MODEL  
WEIGHT (LBS.)  
NUMBER  
UNITS  
inches  
mm  
A B C D E  
STD.  
ASME  
E(S)50  
E(S)85  
E(S)120  
43-5/8  
26-1/4  
36-1/4  
32  
813  
17-1/4  
270 lbs.  
122 kgs.  
320 lbs.  
145 kgs.  
1108  
667  
920  
438  
inches  
mm  
57-11/16  
1465  
28-1/4  
718  
49-1/2  
1258  
34  
864  
18-1/4  
464  
350 lbs.  
159 kgs.  
380 lbs.  
172 kgs.  
inches  
mm  
67-5/8  
1718  
30-1/4  
768  
58-3/4  
1493  
36  
914  
19-1/4  
489  
430 lbs.  
185 kgs.  
460 lbs.  
209 kgs.  
• System Sentinel –  
D
all models employ a diagnostic panel  
utilizing light emitting diodes (L.E.D.),  
corresponding to the number and  
location of each heating element.  
L.E.D.’s are energized when the elec-  
tric elements are operating. An unlit  
L.E.D. pinpoints the exact location of  
a non-functioning element, making  
element operation diagnosis simple  
and positive.  
1 1/2  
"
HOT OUTLET  
NIPPLE  
B
E
T&P  
SYSTEM SENTINEL  
A
C
The minimum distance to provide  
adequate clearance for protection of  
combustible material is 0 inches from  
jacket and 18 inches from access door.  
However, additional clearance for  
accessibility to permit inspection and  
servicing such as removing heating  
elements or checking controls must be  
provided. All models are approved for  
installation on combustible flooring.  
AUTOMATIC  
36 1/8  
"
TEMPERATURE  
CONTROL  
(917mm)  
(IMMERSION ONLY)  
1 1/2  
"
COLD INLET  
NIPPLE  
4 3/4  
"
5"  
(127mm)  
(121mm)  
 
Heavy Duty Electric continued.  
Other Features:  
• Integral Fusing –  
• Terminal Block –  
all models have integral fusing for each element.  
all models are equipped with U.L. listed terminal  
blocks for simplicity of installation. The terminal  
block will accept either copper or aluminum field  
connect wire.  
• Anode Rods –  
two (2) magnesium anodes are installed in each tank  
to ensure long life and corrosion resistance.  
• 120 Volt Control Circuit –  
• Temperature and Pressure Relief Valve –  
AGA/ASME rated and factory installed.  
all units are furnished with a fused 120 volt control  
circuit. All controls (thermostats, high temperature  
limit, etc.) are operated off of this basic 120 volt  
control circuit. This circuit is created by an internal  
multi-tap transformer of unique design that has four  
(4) taps for the primary voltages, 208, 240, 277  
and 480.  
• Electrical Connections –  
pre-wired, accessible control box with multiple knock-  
outs on side in size selections to match the National  
Electric Code. Sizes range from 1/2" to 2". A ground-  
ing screw is provided for attaching an equipment  
grounding conductor.  
• Water Connections –  
• Single Panel Control Box –  
with hinged door, provides immediate access to all  
electrical components and elements.  
hot outlet and cold inlet are 1-1/2" NPT dielectric  
nipples which prevent excessive turbulence of heated  
water and results in optimum tank draw.  
Recommended Specifications:  
Water heater(s) shall be model ________________, manufactured by RHEEM-RUUD, having electrical input of __________  
kW and a recovery rate of _____________ GPH at a 100°F temperature rise. Water heater(s) shall have a storage capacity of  
___________ gallons. Water heater(s) shall have the UL seal of certification and be factory equipped with an AGA/ASME rated  
temperature and pressure relief valve. Tank(s) shall have a double coating of high temperature porcelain enamel and furnished  
with magnesium anode rods rigidly supported. Water heater(s) shall meet or exceed the standby loss requirements of  
ASHRAE Standard 90.1b-2001. Tank(s) shall have a working pressure of 150 psi, and shall be completely assembled. Water  
heater(s) shall be approved-listed and constructed in accordance with UL Sanitation (NSF5). Water heater(s) shall be equipped  
with LIFEGUARD “screw-in” type elements featuring a stainless steel outer sheath of INCO-LOY 840 material. Tank shall be  
insulated with 3" of rigid polyurethane foam insulation. Water heater(s) shall be constructed with a SYSTEM SENTINEL  
element diagnostic panel utilizing light emitting diodes. Each LED will correspond to the number and location of the heating  
elements and monitor their on-off function. Water heater(s) shall be provided with internal power circuit fusing, control circuit  
fusing, magnetic contactors, 120 volt control circuit transformer and surface mounted thermostat or immersion thermostat(s)  
with manual reset high limit control. 1-1/2" inlet and outlet water connections shall be provided. Water heater(s) shall be  
covered by a three year limited warranty against tank leaks.  
Add for ASME construction  
Water heater(s) shall be constructed in accordance with the requirements of the ASME Boiler and Pressure Vessel Code,  
Section IV Part HLW.  
Limited Warranty:  
This product features a three year limited warranty against tank leaks. Please refer to Commercial Warranty Information  
brochure for complete warranty information.  
C O M M E R C I A L  
W A T E R H E A T E R S  
In keeping with its policy of continuous progress and product improvement, Rheem-Ruud reserves the right to make changes without notice.  
Rheem Water Heating • 101 Bell Road, Montgomery, Alabama 36117-4305 • www.rheem.com  
Rheem Canada Ltd./Ltée,128 Barton Street West, Hamilton, Ontario L8N 3P3  
PRINTED IN U.S.A  
02/06 WP  
FORM NO. RR102CE-1 Rev. 12  
 

Q Logic Switch 3800 User Guide
Raypak Heat Pump RHP 115HC User Guide
RCA Juicer RD2800 User Guide
Rheem Portable Generator GEN15ADC E User Guide
Rotel Cassette Player RD 835 User Guide
Samsung CRT Television TXM 1367 User Guide
Samsung Microwave Oven MC1015WB BB User Guide
Scag Power Equipment Lawn Mower STT 35BV SS User Guide
Schumacher Battery Charger MKC 10P User Guide
Seagate Speaker ST3500641NS User Guide