Rheem RTH-74XN-1 warranty Rheem Tankless Outdoor Gas Water Heaters, Tankless Outdoor Units

Rheem Tankless Outdoor Gas Water Heaters

Available in 5.3 and 7.4 GPM Outdoor Models

10-Year Limited Warranty on Heat Exchanger*3-Year Limited Warranty on Parts*

•New! UMC-117 remote control is included and can be set from the out-of-the-box 120 degrees – up to a 140 degree maximum (additional remote control thermostats are available

–sold separately)

•New! EZ-Link™cable connects two tankless units to operate as one – now available for high demand applications

•Exclusive! Guardian SBT™ sensing burner technology

•Exclusive! Guardian OFW™ overheat film wrap

•Exclusive! Two high-altitude options – up to 6,560 or 9,840 ft. elevations above sea level (altitude chip required

–sold separately)

•Exclusive! All Rheem tankless models are third-party certified by GAMA

•Exclusive! All Rheem tankless models qualify for up to a $300 federal energy tax credit (refer to your tax advisor for details)

•Exclusive! All Rheem models can be linked in up to 20 unit manifold installations by using the optional MIC-180 and MICS-180 manifold control assembly

•Continuous hot water

•Energy saving design

•Compact, space saving design

•Intelligent electronic controls designed to increase energy efficiency and safety

•Self diagnostic program

•Digital display shows temperature setting and maintenance codes

•Built-in electric blower

•Environmentally friendly Low NOx burner meets SCAQMD rule 1146 requirements

•Features freeze protection to -30°F on RTG-74, -20° F on RTG-53

*See Residential Warranty Information Brochure for complete warranty information. If the water heater is installed anywhere other than a single family dwelling, such as a commercial application, or in any system in which the water is recirculated, the applicable warranty periods will be limited to one (1) year.

Energy Factor and Average Annual
Operating Costs based on D.O.E.	®

(Department of Energy) test procedures. D.O.E. national average fuel rate natural gas 91¢/therm; LP $1.23/gallon.

DESCRIPTION

FEATURES

ROUGHING IN DIMENSIONS (SHOWN IN INCHES)

ENERGY INFO.

GAS

WATER FLOW RATE

SHIP.

D.O.E.

INPUT

TEMP.

GPM @ 77°

GPM @ 45°

CONNECTION

VENT

WEIGHT

ENERGY

ANN.

MODEL NUMBER BTU/HR.

TYPE

RANGE*

RISE MAX.

RISE MAX.

WATER

GAS

HEIGHT

WIDTH

DEPTH

DIAMETER

(LBS.)

FACTOR

OP. COST

RTG-53XN†

21,600 -

Outdoor

100° to

3.1

5.3

3/4

3/4

20-1/2

13-3/4

5-1/4

N/A

36

.82

$167 Nat

141,000

140° F

$246 LP

RTG-74XN-1†

19,000 -

Outdoor

100° to

4.3

7.4

3/4

3/4

25-3/8

14-7/8

11-1/8

N/A

55

.82

$167 Nat

199,900

140° F

$246 LP

† Available in Natural Gas and Propane (LP). For Propane replace the N

Proper gas pressure must be ensured to supply tankless gas water heaters – up to

with a P when ordering.

145,000 BTU for RTG-53 models and up to 199,900 BTU for RTG-74 models.

* Factory set maximum temperature is 120° F.

(Consult your gas supplier)

• For installations above 3,280 feet a high altitude chip is required.

Temperature Rise (°F)

Refer to Rheem price list or consult factory for details.

• Consult factory for information on sizing the application.

Model Number

35°

45°

50°

60°

70°

77°

80°

90°

100°

RTG-53X Water Flow (GPM)

6.8

5.3

4.7

3.9

3.4

3.1

3.0

2.6

2.4

RTG-74X Water Flow (GPM)

8.5

7.4

6.6

5.5

4.7

4.3

4.1

3.7

3.3

Above estimates are for sizing purposes only.

These units are designed to meet

or exceed ANSI (American National

Standards Institute) requirements and have

Recess Box for Rheem

been tested according to D.O.E. test proce-

Tankless Outdoor Units

dures and meet or exceed the energy effi-

ciency requirements of NAECA, ASHRAE

Now Available

standard 90, ICC Code and all state energy

efficiency performance criteria for energy

consuming appliances.

Contact your wholesale or local

Before purchasing this appliance, read

Rheem representative for the recess

important energy cost and efficiency

box that meets your application.

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.

Rheem Water Heating • 101 Bell Road, Montgomery, Alabama 36117-4305 • www.rheem.com

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