Rheem 120 - User Manual

120, 208, 240,
277 and 480
voltages
Point-Of-UseElectric Commercial Water Heaters
Available in Sizes Ranging From 2-1/2 – 30 Gallon Tank-Type Models

1440 Watts thru 6000 Watts
Rheem-Ruud point-of-use electric commercial water heaters are designed to
provide hot water at the consumption point, eliminating costly temperature
loss in long piping runs. Well suited for a wide variety of applications, point-of-
use heaters are small enough for installation in limited spaces under coun-
ters, mop sinks, cabinets, or any remote area where modest quantities of hot
water are required.They are ideally suited for applications in retail stores,
public restrooms, office washrooms, kitchen and mop or bar sinks.
Construction Features:
• Long life tank design –
proprietary steel formulation with a
unique coat of high temperature
porcelain enamel to maximize
corrosion resistance resulting in a
superior tank design. A patented
R-Tech anode rod provides
advanced technology; equalizing
aggressive water action while
prolonging the effective life of
the anode rod and in turn the
life of the tank.
•
Long life heating elements –
Our patented resistor elements
are designed with a specially
treated, double layer of magne-
sium oxide and copper to
resist corrosion.
•
Efficient design –
Rigid polyurethane foam insulation
provides superior insulating
qualities resulting in reduced
operating costs.
• Optional wall mounting kit –
The wall mounting kit provides an
easy way to mount the unit off the
floor, out of the way for more use-
able floor space in a small area.
Each kit is designed to be used on
walls with 16" stud centers. All
necessary parts are included in
this easy to install kit. (Note: The
2-1/2 gallon model comes stan-
dard with a wall mounting kit.)
•
Automatic temperature
control –
A surface mounted thermostat
automatically cycles on and off to
maintain the water temperature at
a desired preset level.
•
Temperature limiting control –
Automatically and safely cuts off
the power in the unlikely event that
the water temperature exceeds
190°F.
• Temperature and pressure
relief valve –
AGA/ASME rated and factory
installed.
•
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Certifications and Ratings:
• Efficiency – these models meet or exceed thermal efficiency and standby
loss requirements of current ASHRAE standards. (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 174 as electric storage
tank water heaters. All models are North Carolina Code compliant.
CERTIFIED FOR A 150 PSI MAXIMUM WORKING PRESSURE.
Continued on reverse.

Summary

Construction Features

Long Life Tank Design

Proprietary steel formulation with high-temperature porcelain enamel for corrosion resistance, featuring R-Tech anode rod.

Long Life Heating Elements

Patented resistor elements with specially treated, double-layer magnesium oxide and copper for corrosion resistance.

Efficient Design

Rigid polyurethane foam insulation provides superior insulating qualities for reduced operating costs.

Optional Wall Mounting Kit

Provides an easy way to mount units off the floor, ideal for small areas. Kit designed for 16" stud centers.

Automatic Temperature Control

Surface mounted thermostat cycles unit on/off to maintain preset water temperature.

Temperature Limiting Control

Safely cuts off power if water temperature exceeds 190°F.

Temperature and Pressure Relief Valve

AGA/ASME rated and factory installed for safety.

Certifications and Ratings

Efficiency Standards

Models meet or exceed ASHRAE thermal efficiency and standby loss requirements, including EPact and CEC codes.

Safety and Construction Certifications

Design certified by Underwriters Laboratories (UL) to meet UL standard 174.

Dimensional Information

Model Dimensions and Specifications

Detailed dimensions (A-E) and approximate shipping weight for various Rheem-Ruud commercial water heater models.

Product Availability and Electrical Characteristics

Product Availability by Voltage

Availability ('Y' or 'NA') of element wattages across different single-phase voltage options.

Electrical Characteristics (Amps)

Amperage draw for various element wattages across different single-phase voltage options.

Recovery Capacities and Recommended Specifications

Recovery Capacities

Recovery rates (GPH/LPH) for different element wattages at various temperature rises (40°F to 120°F).

Recommended Specifications

Guidelines for specifying Rheem-Ruud water heaters, including input, recovery rate, capacity, and certifications.

Limited Warranty Information

Tank Leak Warranty

This product features a three-year limited warranty against tank leaks.

Rheem 120 Specifications

General

Brand	Rheem
Model	120
Category	Water Heater
Language	English