4C4D1520-21FF-4814-B355-4E3DD7083F21 Water
Residential Electric Professional Classic
Tankless Water Heaters
Rheem® Professional Classic® RTEX Tankless Electric Water Heaters Provide On-Demand Hot Water at the Source
RTEX - 04T and RTEX - 06T are Installed at the point-of-use. Ideal for use in a bathroom, office breakroom, wet bar, or an RV. The 120V RTEX - 04T 3.5 kW is suitable for one low flow faucet such as a small sink. The 240V RTEX - 06T 6.5 kW is suitable for one bathroom faucet or up to two low flow faucets running simultaneously. Both models include thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F and two o ptional 0.35 GPM aerators that thread onto the faucet to provide an even and consistent temperature and flow.
PERFORMANCE FEATURES
· Saves Space Up to 98% smaller than a standard electric water heater
· Saves Energy Zero standby heat loss when installed at the point-of-use
· H igh Efficiency UEF up to .95 and advanced self-modulating technology only consumes the power needed to satisfy hot water demand
· Durable copper sheathed heating elements are replaceable, easy to maintain and improves service life
· Digital thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)
· Designed to be mounted in an upright position with the inlet and outlet water connections at the bottom of the unit for ease of installation
· Venting is not required to operate, simplifying the installation process compared to a gas tankless water heater
· Includes two optional 0.35 GPM aerators (flow restrictors) for optimal temperature output and performance
WARRANTY
· 5 Years - Leaks, 1 Year - Parts
See Use and Care Manual for complete information.
These products meet a stringent set of our company's internally defined sustainability standards.
®
POINT-OF-USE
RTEX - 04T
RTEX - 06T
Tested and certified by the Water Quality Association against NSF/ANSI 372 for lead free compliance.
Tankless Electric Specifications and Minimum Requirements
DESCRIPTION
FEATURES
DIMENSIONS (SHOWN IN INCHES)
MODEL NUMBER
POWER (kW)
VOLTAGE
TOTAL UNIT AMPERAGE
(AMPS)
RECOMMENDED BREAKER SIZE
PHASE
UNIFORM ENERGY FACTOR
(UEF)
REQUIRED WIRE (75°C
INSULATION)
HEIGHT
WIDTH
WATER DEPTH CONNECTIONS
SHIP WEIGHT (LBS.)
FLOW HEAT OPERATING ACTIVATION EXCHANGER PRESSURE RATE (GPM)
120V 1 HEATING CHAMBER
RTEX - 04T
3.5
120
Minimum:
29
1 x 30 A Single Pole
1
0.95 10 AWG** 7
11
3
1/2" NPT
4
Stainless Steel
25 PSI Maximum:
0.25 GPM
150 PSI
240V* 1 HEATING CHAMBER
RTEX - 06T
6.5
240
Minimum:
27
1 x 30 A Double Pole
1
0.94 10 AWG** 7
11
3
1/2" NPT
4
Stainless Steel
25 PSI Maximum:
0.25 GPM
150 PSI
* 240V units can be used on 208V single phase with 25% reduced temperature output. Please note per UL standards the rating plate and installation instructions will all be according to a 240V applied voltage. Check with local officials prior to derating the electrical infrastructure.
**AWG - American Wire Gauge
IINNTTEEGGRRAATETDE DHOHMOEMCEOCMOFOMRFTO RT
Rheem.com
04/24 FORM NO. TKE-101-POUT
Tankless Electric Water Heaters
RTEX - 04T & RTEX - 06T
7"
Water
Residential Electric Professional Classic
Tankless Water Heaters
2.7"
5.6"
11"
1" 3"
SIZING A TANKLESS ELECTRIC WATER HEATER
IMPORTANT Verify that your home meets the electrical requirements. See specifications and minimum requirements. (front side)
1 Estimate your total household gallons per minute (GPM) needs by adding up the average flow rates by fixture (faucets), including any that will run at the same time.
Ex. 2 low flow faucets running at the same time adds up to 1 GPM (0.5 + 0.5 = 1 GPM)
2 Locate your zone on the map. U.S. Average Ground Water Temperature Zone Map
Average Flow Rates (GPM) by Fixture
Low Flow Faucet
0.5
Bathroom Faucet
1
Kitchen Faucet
1.5*
Low Flow Shower
1.5*
*RTEX - 06T is only suitable in zone 9 (S. Florida, Hawaii, and Puerto Rico).
Flow rates may vary.
CAN Zone 1
AK Zone 2
HI Zone 3
PR Zone 4
Zone 5
Zone 6
Zone 7
Zone 8
Zone 9
3 Select the model that can supply the estimated total household gallons her minute (Step 1) with the ground water temperature in
your zone.
37°F 42°F 47°F 52°F 57°F 62°F 67°F 72°F 77°F
Flow Rate Capacity Table by Zone (Gallons Per Minute - GPM)
Model #
Zone 1 37OF/ 3°C
Zone 2 42OF/ 5°C
Zone 3 47OF/ 8°C
Zone 4 52OF/ 11°C
Zone 5 57OF/ 14°C
Zone 6 62OF/ 17°C
Zone 7 67OF/ 20°C
Zone 8 72OF/ 22°C
Zone 9 77°F/ 28°C
RTEX - 04T
Not Recommended
0.5
0.6
0.6
0.7
0.9
RTEX - 06T
0.7
0.7
0.8
0.8
0.9
1.0
1.2
1.3
1.6
Flow rates are calculated to a set point of 105°F. Ground water temperature varies seasonally.
In keeping with its policy of continuous progress and product improvement, Rheem reserves the right to make changes without notice.
Rheem.com | 800.374.8806 Manufacturers National Service Department 400 Captain Neville Drive, Waterbury, CT 06705
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04/24 FORM NO. TKE-101-POUT
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