Technical Specifications

ManualsBrandsRheem ManualsElectric Water HeatersMarathon® 30 Gallon Lifetime Tank Electric Water Heater

PRINTED IN U.S.A. 02/18 WP FORM NO. 101-42 N Rev. 8

Water

INTEGRATED HOME COMFORT

Electric

Marathon Water Heaters

INTEGRATED HOME COMFOR

INTEGRATED HOME COMFORT

Rheem Marathon

non-metallic electric water

heaters are durable, lightweight, and warranted

not to leak as long as you own your home*

Marathon

30, 40 50, 85 and

100-Gallon Capacities

240 Volt AC/Single Phase

Electric

Non-metallic Tank Features

• Seamless, blow-molded, polybutene

tank – impervious to rust and

corrosion

• Multiple layers of filament wound

fiberglass give the tank unmatched

strength

• Polyurethane insulation helps reduce

energy consumption

• Recessed brass drain valve is out of

the way of brooms and scrubbers

• Durable PEX dip tube

• Tough molded polyethylene outer shell

resists dents, scratches, and salt air

Efficiency

• .88 - .92 UEF

• Well insulated for reduced standby

heat loss

• Pipe wrap energy saving kit included

to achieve maximum energy savings

Performance

• FHR: 38 - 83 gallons, depending on

model

•

Recovery: up to 21 GPH at a 90° F rise

Easy Installation & Service

• Marathon’s lightweight tank is easier

to maneuver and position

• Bowl shaped tank bottom allows

complete sediment draining

• Water tight grommets keep out over-

head moisture and condensation

Plus…

• Thermally fused upper element

provides protection against dry-firing

• Titanium lower element for superior

resistance to lime build-up

• Brass drain valve

• Temperature and pressure relief valve

• Low Lead compliant

• Standard replacement parts

Warranty

• Residential Application: Lifetime

limited warranty on tank and 6-years

on parts*

• Commercial Application: 5-year limited

tank warranty and 1-year on parts

†

* Warranty is provided to original customer in

a residential application after online product

registration is complete. Registration must be

completed within 90 days of installation. See

Warranty Certificate for complete information

†

See Warranty Certificate for complete information

Units meet or exceed ANSI requirements and have

been tested according to D.O.E. procedures. Units

meet or exceed the energy efficiency requirements

of NAECA, ASHRAE standard 90, ICC Code and all

state energy efficiency performance criteria.

LEED Point = 1

See speciﬁcations chart on back.

Summary of content (2 pages)

PAGE 1
Electric INTEGRATE D H O M E C O M F O RT Water Marathon Water Heaters Rheem Marathon® non-metallic electric water heaters are durable, lightweight, and warranted not to leak as long as you own your home* Non-metallic Tank Features Plus… • Seamless, blow-molded, polybutene tank – impervious to rust and corrosion • Thermally fused upper element provides protection against dry-firing •M ultiple layers of filament wound fiberglass give the tank unmatched strength •P olyurethane insulation helps
PAGE 2
Electric INTEGRATE D H O M E C O M F O RT Water Marathon Water Heaters Marathon® Specifications DESCRIPTION FEATURES UEF FIRST HOUR RATING G.P.H. ROUGHING IN DIMENSIONS (SHOWN IN INCHES) ENERGY INFO. T Y P E NOMINAL GALLON CAPACITY RATED GALLON CAPACITY MODEL NUMBER Tall 30 28 MR30238C† 38 17 49 49-1/2 21-5/8 75 0.88 Tall 30 28 MR30245C† 38 21 49 49-1/2 21-5/8 75 0.88 Tall 40 38 MR40245C† 51 21 61-1/2 65-1/2 21-3/4 90 0.