RHEEM TANKLESS ELECTRIC
Tankless Electric Water Heaters
with Modulating Power Control
from Rheem
10-Year Limited Heat Exchanger Warranty
1-Year Limited Parts Warranty
See Residential Warranty Certificate for complete information.
• Compact design –
fits almost anywhere
• Continuous hot water
on demand
• Industry leading
low-flow activation
• External temperature
control
• LED’s indicate active
element and standby
mode
• 1/2-Inch water connections
• Rugged brass/copper heat exchanger
RTE 3
RTE 7
RTE 9
RTE 13
Applications
• Homes
• Apartments
• Condos
• Hospitals
• Hotels
• Boats
See reverse for specifications.
• Restaurants
• Offices
• Laboratories
…anywhere hot
water is
needed!
RTE 18, RTE 27
Tankless water heaters
Continuous hot water
ELECTRIC TANKLESS SERIES
Specifications
DIMENSIONS (inches / pounds)
ODEL LENGTH WIDTH WEIGHT
M
RTE 3 10-1/4 5-3/8 6
RTE 7 10-1/4 5-3/8 6
RTE 9 10 7-1/4 8
RTE 13 10 7-1/4 8
RTE 18 10-1/2 11-1/4 12
RTE 27 10-1/2 11-1/4 12
• Plumbing connections: 1/2 NPT • Minimum flow rate: 1/2 gal. min.
ELECTRICAL SPECIFICATIONS
EQ. MAX POWER AWG
MODEL KW VOLTS BREAKER (AMP) WIRE
RTE 3 3.2 110 30 29 10
RTE 7 7 240 30 29 10
RTE 9 9 240 40 38 8
RTE 13 13 240 60 54 6
RTE 18 18 240 (2) 40 75 (2) 8
RTE 27 27 240 (2) 60 112 (2) 6
R
APPLICATION FLOW RATE IN GPM AT 60 PSI
Typical Shower 1.5 to 2.0 GPM Max. 2.5 GPM
Typical Bath Tub Faucet 2.0 to 3.0 GPM
Bathroom Vanity Sink Faucet 0.5 to 1.5 GPM
Kitchen Sink Faucet 1.0 o 2.2 GPM
Washer 1.5 to 3.0 GPM
TEMPERATURE RISE AND GPM FLOW
MINIMUM MAX.
MODEL FLOW RATE RATE
NUMBER
ACTIVATION FLOW
(GPM) (GPM) 20° 30° 40° 50° 60° 70° 80° 90° 100°
RTE 3 0.4 1.5 1.09 0.73 0.55 0.44
RTE 7 0.4 2.5 2.50 1.59 1.20 0.96 0.80 0.68 0.60 0.53 0.48
RTE 9 0.4 3 3.00 2.05 1.54 1.23 1.02 0.88 0.77 0.68 0.61
RTE 13 0.4 4 4.00 2.96 2.22 1.78 1.48 1.27 1.11 0.99 0.89
RTE 18 0.4 5 5.00 4.10 3.07 2.46 2.05 1.76 1.54 1.37 1.23
RTE 27 0.4 5 5.00 5.00 4.61 3.69 3.07 2.63 2.31 2.05 1.84
TEMPERATURE RISE CHART (F°)
AND FLOW RATES BY MODEL
In keeping with its policy of continuous progress and product improvement,
Rheem reserves the right to make changes without notice.
Rheem Water Heating and Heating & Cooling Products
101 Bell Road • Montgomery, AL 36117-4305
1-866-720-2076 • www.rheemtankless.com
Rheem Canada Ltd./Ltée • Water Heater Division
125 Edgeware Road, Unit 1, Brampton, Ontario L6Y 0P5
Printed in U.S.A. 02/11 WP Form No. TK-205 Rev. 3
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