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Residential Water Heaters | Condensing Tankless Series
INTEGRATED HOME COMFORT
NDENSING
C
Product Brochure
TANKLESS
The Next Level of Tankless:
Prestige® high efficiency condensing
tankless gas water heaters
• All models exceed ENERGY STAR® requirements
• Indoor direct vent with PVC piping and
outdoor models
• Rheem exclusive water savings setting
• Built-in condensate neutralizer
Water | Residential Gas | Condensing Tankless Water Heaters
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Rheem Prestige® Condensing Tankless
INTEGRATED HOME COMFORT
targeted tankless solutions –
for easier installs, savings
and support
Preferred by contractors1, Rheem® Prestige® Series
Condensing Tankless Water Heaters are packed with
business-building features. Our industry- leading energyefficient design delivers an estimated lifetime savings of
up to $1,000 on energy costs.2
Efficiency
• Up to .94 EF with stainless steel
condensing heat exchanger
• Intelligent electronic controls designed
to increase energy efficiency and safety
Performance
• Exclusive! Water savings setting –
upon activation, this setting can save
homeowners up to 1,100 gallons of
water per year
flow of water through the pipes until
the temperature reaches the heater’s
set temperature
• Recirculation Pump Kit-Ready –
Quickly pairs with our Recirculation
Pump kit to provide instantaneous hot
water at the tap
• Low flow fixture compatible – Industryfirst minimum flow rate of .26 GPM and
minimum activation flow rate of .40 GPM
ensures the user will receive hot water
even in low demand situations
3
by decreasing the
4
Technology
• Hot-start programming helps
minimize fluctuation in water
temperature, referred to
as “cold water sandwich”,
during periods of frequent
on/off operation
• Exclusive! Guardian OFW
film wrap
• EZ-Link
• Manifold up to
• Manifold up to 20 units with the optional
™
available for
higher demand
applications to
connect two
tankless units to
operate as one
six units with an
optional MIC-6 manifold control board
MIC-185 plus the MICS-180 manifold
control assembly
cable
High-Altitude Compliant
Easy Installation and Service
• Built-in condensate neutralizer
• 1/2" Gas line compatibility on every
model
• Exclusive! Maintenance Notice Set
ting alerts homeowner – flashing a
warning code to call for service check
• Self-diagnostic system for easy
installation and service
• Digital display shows temperature
setting and maintenance codes
• Two-pipe direct vent system designed
for PVC pipe (up to 38 ft. of 3" PVC pipe
or 5 ft. of 2" PVC pipe)
-
• High-altitude capability – up to
8,400 ft. elevation above sea level5
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
• EZ-Spec
online tool that takes the guess work out
of sizing tankless applications – avail
able at www.rheem.com/tankless
™
Sizing Software – advanced
Warranty
• 12-Year heat exchanger – residential,
5-year heat exchanger – commercial,
5-year parts and 1-year labor
See Warranty Certificate for complete information
QUALIFIES
FOR UP TO A
$300
FEDERAL TAX
CREDIT
™
overheat
UP TO
.94
ENERGY
FACTOR
-
6
Outdoor
Indoor Direct Vent
Commercial Applications
The Prestige® Condensing Tankless
Series can be upgraded for hightemperature commercial use
•
Temperature range is 85°F to 185°F
RTGH-95 Upgrade Kits
RTG20254A for RTGH-95DVLN-1
RTG20254B for RTGH-95DVLP-1
RTG20254C for RTGH-95XLN-1
RTG20254D for RTGH-95XLP-1
RTGH-90 Upgrade Kits
RTG20255A for RTGH-90DVLN-1
RTG20255B for RTGH-90DVLP-1
RTG20255C for RTGH-90XLN-1
RTG20255D for RTGH-90XLP-1
RTGH-84 Upgrade Kits
RTG20256A for RTGH-84DVLN-1
RTG20256B for RTGH-84DVLP-1
RTG20256C for RTGH-84XLN-1
RTG20256D for RTGH-84XLP-1
Note: These upgrade kits are not compatible with
previous models. See the latest Tankless Parts and
Accessories Catalog for a complete listing.
1
According to a 2015 survey of tankless contractors by
Hanover Research on behalf of Rheem.
2
Based on comparison of a Rheem® Prestige® Condensing
Tankless Water Heater (natural gas) with .94 EF and a
40-gallon standard residential natural gas tank-type water
heater with a 0.62 EF; Savings claim based on difference in
annual operating costs from DOE over the 12-year warranty
period of the Rheem tankless unit; Savings higher for liquid
propane models.
3
Savings based on DOE test procedures.
4
Pump kit designed for single unit applications only.
5
Contact customer service for exact altitude rating for
each model.
6
Consult a tax professional regarding you individual
tax situation and ability to claim a tax credit related to
the purchase of qualifying Rheem products until
December 31, 2016.
Residential Water Heaters | Condensing Tankless Series
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Superior Construction and Reliability
Venting Options and
Installations
Air Intake
(PVC Venting)
7
8
(PVC Venting)
1
2
6
Exhaust
Indoor Direct Vent
Stainless Steel Secondary
1
Heat Exchanger
2
All-Copper Primary Heat
Exchanger
Over Heat Film Wrap
3
3
5
4
9
10
Electronic Spark Ignition
4
157,000 - 199,900 Btu/h
5
Modulating Burner
6
Electronic Control Board
7
Condensate Reservoir
Variable Speed Fan
8
9
Water Flow Control
System
Modulating Gas Valve
10
PVC Vent System
Condensate
Neutralizer
Discharge
Outlet
7
3/4" Hot
Water
Outlet
8
External
Connection
for Remote
Control Cable
1
2
6
5
3/4" Cold
Water
Inlet
3
9
4
10
3/4" Gas
Connection
Outdoor
Stainless Steel Secondary
1
Heat Exchanger
2
All-Copper Primary Heat
Exchanger
Over Heat Film Wrap
3
Electronic Spark Ignition
4
157,000 - 199,900 Btu/h
5
Modulating Burner
6
Electronic Control Board
7
Condensate Reservoir
Variable Speed Fan
8
9
Water Flow Control
System
All indoor tankless units must be vented
vertically or horizontally to the outdoors
using manufacturer approved venting
material. See the installation instructions
for each specific model. (ULCS636 Pipe
must be used for Canada.)
Outdoor
Venting details, including clearances and
diagrams can be found in the “Use & Care
Manual” of Rheem indoor tankless water
heaters.
Condensate
Neutralizer
Discharge
Outlet
3/4" Hot
Water
Outlet
External
Connection
for Remote
Control Cable
3/4" Cold
Water
Inlet
10
3/4" Gas
Connection
Modulating Gas Valve
Rheem.com
866.720.2076
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INTEGRATED HOME COMFORT
ves
Delt a-T
M
Commercial Gas
Water
Prestige Tankless Water Heaters
Rheem Prestige® Specifications
DESCRIPTION FEATURES ROUGHING IN DIMENSIONS (SHOWN IN INCHES) ENERGY INFO.
GAS MIN. FLOW/ GPM @ GPM @ SHIP. EST. YEARLY
MODEL INPUT TEMP. ACTIVATION 77° RISE 45° RISE MAX.
NUMBER BTU/H TYPE RANGE GPM MAX. MAX. GPM WATER GAS HEIGHT WIDTH DEPTH DIAM. (LBS.) FACTOR EFFICIENCY NAT/LP
Rheem Prestige® RTGH-95 for 3 Bathroom Homes*
RTGH-95DVLN-1 11,000- Indoor 85° to 0.26/0.40 4.9 8.4 9.5 3/4 3/4 27-1/2 18-1/2 9-3/4 2” or 3” 82 .94 94% $174/421
199,900
RTGH-95XLN-1 11,000- Outdoor 85° to 0.26/0.40 4.9 8.4 9.5 3/4 3/4 27-1/2 18-1/2 9-3/4 N/A 82 .94 94% $174/421
199,900 140° F
Direct Vent 140° F PVC 2-Pipe
Rheem Prestige® RTGH-90 for 2-3 Bathroom Homes*
RTGH-90DVLN-1 11,000- Indoor 85° to 0.26/0.40 4.4 7.5 9.0 3/4 3/4 27-1/2 18-1/2 9-3/4 2” or 3” 82 .93 93% $176/425
180,000
RTGH-90XLN-1 11,000- Outdoor 85° to 0.26/0.40 4.4 7.5 9.0 3/4 3/4 27-1/2 18-1/2 9-3/4 N/A 82 .93 93% $176/425
180,000 140° F
Direct Vent 140° F PVC 2-Pipe
Rheem Prestige® RTGH-84 for 2-3 Bathroom Homes*
RTGH-84DVLN-1 11,000- Indoor 85° to 0.26/0.40 3.9 6.6 8.4 3/4 3/4 27-1/2 18-1/2 9-3/4 2” or 3” 82 .92 92% $178/430
157,000
RTGH-84XLN-1 11,000- Outdoor 85° to 0.26/0.40 3.9 6.6 8.4 3/4 3/4 27-1/2 18-1/2 9-3/4 N/A 82 .92 92% $178/430
157,000 140° F
*Based on simultaneous showers using 2.5 gallons per minute. Flow rates vary depending on temperature of cold water supply.
Estimated energy cost based on a national average fuel cost of $1.09/therm for natural gas and $2.41/gallon for LP.
Energy factor determined by the U.S. Department of Energy (DOE) test procedures.
All models are available in Natural Gas and Propane (LP). For Propane replace the N with P when ordering.
SCAQMD 1146.2 compliant.
Factory set maximum temperature is 120° F. See Use and Care Manual for setting.
Consult factory for information on sizing the application.
Add a "C" to the model number when ordering Canadian models. Outdoor models are only for seasonal use in Canada.
Please contact Rheem Canada Ltd. for details.
Vent Termination Kits are required for Direct Vent models. Contact your distributor for details.
Proper gas pressure must be ensured to supply tankless gas water heaters – up to 199,900 Btu/h for RTGH-95 models,
up to 180,000 Btu/h for RTGH-90 models, up to 157,000 Btu/h for RTGH-84 models. (Consult your gas supplier)
Temperature Rise (° F)
Model Number 35° 45° 50° 60° 70° 77° 80° 90° 100°
RTGH-95 Water Flow (GPM)
RTGH-90 Water Flow (GPM)
RTGH-84 Water Flow (GPM)
Above estimates are for sizing purposes only.
GP
Direct Vent 140° F PVC 2-Pipe
9.5 8.4 7.6 6.3 5.4 4.9 4.7 4.2 3.8
9.0 7.5 6.8 5.6 4.8 4.4 4.2 3.8 3.4
8.4 6.6 6.0 5.0 4.3 3.9 3.7 3.3 3.0
Water Heater Flow Rate Cur
10
9
8
7
6
5
4
3
2
1
0
10 20 35 45 50 60 70 77 80 90 100 120 140
CONNECTION
H95 Max Flow
H90 Max Flow
H84 Max Flow
VENT WEIGHT ENERGY RECOVERY ENERGY COST
LEED Points = 2
Maximum Vent Length
(intake/outlet):
Maximum Maximum
Length Length
Number of 2" of 3"
of 90° Straight Straight
Elbows Pipe Pipe
0 or 1 5.0 ft. 38.0 ft.
(1.5 m) (11.6 m)
2 3.5 ft. 36.5 ft.
(1.0 m) (11.1 m)
3 2.0 ft. 35.0 ft.
(0.6 m) (10.6 m)
4 Not 33.5 ft.
Available (10.2 m)
5 Not 32.0 ft.
Available (9.8 m)
6 Not 30.5 ft.
Available (9.3 m)
(ULC-S636 pipe must be used
for Canada.)
Parts and Accessories
Venting & terminations – 2” or 3”
PVC, recess boxes, pipe covers,
extra remote controls, EZ-Link
cable, manifolds and cables, service valve kits, service parts, flush
kits, reciculation pump kits and
AllClear
™
water treatment system.
For more information on Tankless
parts and accessories, see the
Parts and Accessories Catalog or
call 866-720-2076.
™
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 • 1.800.621.5622
Rheem Canada Ltd./Ltée • 125 Edgeware Road, Unit 1
Brampton, Ontario L6Y 0P5 • 1.800.268.6966
PRINTED IN U.S.A. 10/16 WP FORM NO. TK-901C Rev. 10
Rheem.com
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