Rheem Tankless Mid-Efficiency 64 Direct Vent Indoor Specification Sheet

Rheem Water Heater Specification Sheet - Tankless Mid-Efficiency 64 Direct Vent Indoor.
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Efficiency
•  .82 EF with all copper heat exchanger
•  Intelligent electronic controls designed 

to increase energy efficiency and 

safety

•  Third party efficiency listed by AHRI
Performance
•  Industry First! 0.26 GPM minimum  

flow rate, 0.40 GPM minimum 

activation flow rate

•  RTG-95 for 3 bathroom homes*– 

9.5 gal./min. at 35°F rise max.,  

8.4 gal./min. at 45°F rise

•  RTG-84 for 2-3 bathroom homes*– 

8.4 gal./min. at 35°F rise max.,  

6.6 gal./min. at 45°F rise

•  RTG-64 for 1-2 bathroom homes*– 

6.4 gal./min. at 35°F rise max.,  

5.6 gal./min. at 45°F rise

Self-Diagnostic System
•  Self-diagnostic system for easy 

 installation and service

•  Digital display shows temperature 

 setting and maintenance codes

Technology
•  3"/5" concentric vent system with 

Integrated condensate collector

•  Hot start programming helps  minimize 

fluctuation in water temperature, 

referred to as “cold water sandwich”, 

during periods of frequent on/off 

operation

•  Connects to Metal Fab. Inc., 3"/5" 

concentric venting without an adapter

•  Built-in electric blower
•  Exclusive! Guardian overheat film  

wrap (OFW)

•  EZ-Link cable available for higher 

demand applications to connect two 

tankless units to operate as one

•  Manifold up to six units with an 

 optional MIC-6 manifold control board

•  Manifold up to 20 units with the 

optional MIC-185 plus the MICS-180 

manifold control assembly

Low Emissions
•  Environmentally friendly Ultra Low 

NOx burner meets SCAQMD rule 

1146.2 requirements 

High Altitude Compliant
•  High-altitude capability – up to  

9,840 ft. elevation above sea level 

Plus…
•  Digital remote control and 10 ft. of 

thermostat wire included

•  Supplied with a 120 volt power cord 

(indoor models only)

•  Freeze protection to -30°F
•  Required manual gas isolation valve 

included

•  EZ- Spec™ Sizing Software – 

 advanced online tool that takes the 

guess work out of sizing tankless 

 applications – available at  

www.rheem.com/tankless

Warranty
•  12-Year on heat exchanger – 

 

residential, 5-year on heat  

exchanger – commercial, 5-year  

on parts and 1-year on labor

   See Warranty Certificate for  complete  information

PRINTED IN U.S.A. 10/13 WP FORM NO. TK-808 Rev. 3

    Water    

INTEGRATED HOME COMFORT

Residential Gas
RTG Tankless Water Heaters

INTEGRATED HOME COMFORT

INTEGRATED HOME COMFORT

Rheem RTG is a series of ultra low NOx, 

mid-efficiency tankless gas water heaters 

designed for continuous hot water

RTG-DVL

Indoor Direct Vent Model

11,000-199,900 Btu/h

Natural and LP Gas

RTG-XL

Outdoor Model

11,000-199,900 Btu/h

Natural and LP Gas

Commercial   Applications
RTG Tankless Series can be  upgraded 

for high-temperature commercial and 

hydronic use.
•  Temperature range is 85°F to 185°F 
RTG-95 Upgrade Kits
RTG20236A for RTG-95DVLN
RTG20236B for RTG-95DVLP
RTG20236C for RTG-95XLN
RTG20236D for RTG-95XLP
RTG-84 Upgrade Kits

RTG20237A for RTG-84DVLN
RTG20237B for RTG-84DVLP
RTG20237C for RTG-84XLN
RTG20237D for RTG-84XLP
Note: These upgrade kits are not compatible 

with previous models. See the 2012 Tankless 

Parts Catalog for a complete listing.

*  Based on simultaneous showers using 2.5 

 gallons per minute. Flow rates vary depending   

on  temperature of cold water supply.

LEED Points = 2

2

ProClub

Points

2

ProClub

Points

myrheem.com/proclub

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