Rheem RTGRC95DVLN1, RTG84XLP1, RTG95XLP1, RTGHRH11DVLN Instruction Manual

PRODUCT GUIDE | Tankless Gas Water Heaters

WELCME

TO CONTINUOUS HOT WATER

RHEEM® TANKLESS GAS
WATER HEATERS

OFFER ENERGY-EFFICIENT HOT
WATER FOR YOUR CUSTOMER’S
HOME OR BUSINESS

Why Rheem® Tankless Gas Solutions?

WHY TANKLESS?

TANKLESS FEATURES

• Continuous hot water

• High energy efficiency

• Compact, space saving design

• Self diagnostic digital thermostat

• Precise temperature control

• No hot water storage

• Low operating costs

• High altitude installations to

10,000 ft – some models

• Low NOx emissions – all models

• Indoor and outdoor models

available

TANK TYPE FEATURES

• Low first cost

• Low installation cost

• No electricity required

• Large variety of sizes available

• Flow rates of 12gpm and up

• High altitude installations to

10,000 ft.

• Low NOx emissions – some

models

WHY RECIRCULATION?

By circulating hot water from the tankless unit, through the
home’s plumbing it can be ready at the faucet when needed.

Benefits include:

•

Hot water without the wait or the waste

•

On-demand or timer based pump activation means hot water ready at the
tap when you need it

•

The average household can save up to 12,000 gallons of water per year

• Meets regional water saving regulations

1

WHY CONNECTED WATER HEATERS?

Any Rheem tankless water heater from 2010 to
present
home integrated features, including:

• Water leak detection and system shut off (indoor models only)

• Mobile alerts for notifications/maintenance reminders

• Mobile gas and water usage reports

• Integration with NEST & WINK smart home systems

1

Savings per News B ulleti n relea sed by the Un ited States Depa rtme nt of Energ y / Oak Rid ge Natio nal Laborator y, November 20 02 on study o n water and
energ y savings in resid ential h omes usi ng Hot Water R ecirculating S ystem.

2

Excluding -RH models

2 PRODUCT GUIDE | TANKLESS GAS WATER HEATERS 3PRODUCT GUIDE | TANKLESS GAS WATER HEATERS

2

can be connected to EcoNet for smart

Selecting the
Right Solution
is as Easy
as 1, 2, 3

1 Consider customer location

2 Assess their hot water needs

3 Review inlet temperature and

recommend the best model for
your customer

HELP YOUR

CUSTOMERS

START SAVING

TODAY

Learn more at

rheem.com/

tanklessinnovation

or ask your local

distributor

Mid-Efficiency

Models rated at: Indoor Model #

160,000 BTU/h

180,000 BTU/h

199,900 BTU/h

RTG-70DVLN-1

RTG-70XLN-1

RTG-84DVLN-1

RTG-84XLN-1

RTG-95DVLN-1

RTG-95XLN-1

High Efficiency

Models rated at: Indoor Model #

157,000 BTU/h

180,000 BTU/h

199,900 BTU/h

RTGH-84DVLN-1

RTGH-84XLN-1

RTGH-90DVLN-1

RTGH-90XLN-1

RTGH-95DVLN-1

RTGH-95XLN-1

High Efficiency with
Built-in Recirculation

Models rated at: Indoor Model #

180,000 BTU/h RTGH-RH10DVL

Inlet Temperature 37-47O Inlet Temperature 47-57O Inlet Temperature 57-62O Inlet Temperature 62-77O

Average

GPM

Approximate

Usage

Average

GPM

Approximate

Usage

Average

GPM

Approximate

Usage

Average

GPM

Approximate

Usage

3.5 4.0 4.5 5.5

3.8 4.3 5.1 6.1

4.1 4.7 5.5 6.6

Inlet Temperature 37-47O Inlet Temperature 47-57O Inlet Temperature 57-62O Inlet Temperature 62-77O

Average

GPM

Approximate

Usage

Average

GPM

Approximate

Usage

Average

GPM

Approximate

Usage

Average

GPM

Approximate

Usage

3.9 4.3 5.0 6.0

4.5 4.9 5.8 6.9

5.0 5.5 6.4 7.7

Inlet Temperature 37-47O Inlet Temperature 47-57O Inlet Temperature 57-62O Inlet Temperature 62-77O

Average

GPM

Approximate

Usage

Average

GPM

Approximate

Usage

Average

GPM

Approximate

Usage

Average

GPM

Approximate

Usage

4.3 5.0 5.8 6.9

USAGE KEY

Faucet

Flow rate
of 2.0 GPM

Inlet Temperature:

The temperature of cold
water before it enters your
water heater.

GPM: Gallons Per Minute
Approximate Usage:

The number of faucets
and/or showers this model
will serve based on a
temperature setting of 120˚F.
Flow rates vary depending on
temperature of incoming cold
water and water heater set
temperature.

Shower

Flow rate
of 2.5 GPM

199,000 BTU/h RTGH-RH11DVL

Models with DV are Indoor Direct Vent units. Models with X are Outdoor units.
Replace the N (Natural Gas) in the model numbers with a P for Liquid Propane models.

* Base d on simultaneo us showers using a 2.5 GP M flow rate & f aucets using a 2.0 GPM flow rate, both p re-mix ed with co ld water li ne to 105°F. Flow rates vary depending o n tempe rature of incoming cold water

and water h eater set te mperature. Number of showers an d faucets vary depending on max imum flow rates of sh ower hea ds and fau cets. Usa ge can inc lude oth er appliances i nstead of s howers a nd fauce ts.

4.8 5.5 6.4 7.7

®

Rheem® Prestige

Series with Built-in Recirculation

High Efficiency Tankless Gas Water Heating Solutions

ENERGY

SAVINGS

UP TO

$

1,10 0

VENT

UP TO

50 FT.

WITH

2 INCH

PVC

2

BUILT-IN RECIRCULATION PROVIDES INSTANT HOT WATER
AT THE TAP

Available in indoor direct vent models, the new Rheem Ultra Low NOx, High Efficiency
Condensing Tankless series with built-in recirculation saves time on install with built-in
pump and reduces water waste.

1

AND REDUCES WATER WASTE

LOWER INSTALLATION COSTS

Installs with 2" and 3" Schedule 40 PVC venting, which is easier to work with
and lower cost than stainless steel, saving you money and time

BUILT-IN RECIRCULATION PUMP

Circulates hot water from the water heater and returns the cold water that
would normally run down the drain, back through the plumbing, allowing hot
water to be ready at the tap without any cold water being wasted

Energy Factor

Venting Type

Dimensions

Weight

Warranty

Ultra Low NOx

High Altitude

.94 UEF

Vents with Schedule 40 PVC, CPVC, PP

28.7" H x 17.3" W x 14.8" D

85 lbs.

Heat Exchanger: 12 Years Residential; 5 Years Commercial

Parts: 5 Yea rs

Labor: 1 Year

All Natural Gas Models

Up to 10,000 ft.

Description

Indoor Direct Vent – Nat. Gas RTGH-RH10DVLN RTGH-RH11DVLN

Indoor Direct Vent – LP. Gas RTGH-RH10DVLP RTGH-RH11DVLP

1

Individual results may vary.

2

Based on compar ison aga inst 50-gallon t ank typ e model wi th like fu el type. Savings based on N atural gas model; Sa vings hig her for l iquid pr opane mo dels. 2Individual results may vary.

4 PRODUCT GUIDE | TANKLESS GAS WATER HEATERS 5PRODUCT GUIDE | TANKLESS GAS WATER HEATERS

180,000

BTU Max.

199,000

BTU Max.

INDOOR DIRECT VENT

Exhaust

(PVC Venting)

Air Intake

(PVC Venting)

SAVE TIME

Vents with PVC

1

Vents up to 50 ft. with 2" and up to 100 ft. with 3" PVC saving time
and money

Common Venting

2

Vent two units together for fewer wall penetrations

Power Venting

3

Vent single units using room air intake for more flexible installs

Half-Inch Gas Line Compatible

4

Convert homes easily from tank to tankless without the need to
upgrade existing gas lines up to 24 ft

Perfect for Replacement

5

With dedicated programming for installs without a
return line, a crossover valve can be used to turn
the existing cold water pipe into a return

2

1

BOTTOM VIEW

Connection Cable

Access

Cold Water Inlet

Inlet Filter

INSTALL MORE

Instant Hot Water

6

Recirculation pump circulates hot water from the water heater
through the home, keeping it ready at the tap when needed

Save Water

7

Save up to 12,000 gallons of water wasted down the drain each
year waiting for it to get hot

Timer-Based Pump Activation

8

Option to program pump activation at specific times of day to make
sure hot water is always ready when needed

Auto-Learn Programming

9

This setting will track water usage over a period of time and
auto-program recirculation to meet hot water needs at peak times

Preheat Mode & Internal Recirculation

10

Pumping water through the heat exchanger in an internal loop,
the unit can maintain consistent performance and prevent cold
water bursts

Water & Gas Leak Detection

11

Will shut down the unit and provide an error code

3

4

Hot Water Outlet

Dedicated Return

Condensate Drain

1

For all venting installations, refer to ANSI Z223.1/NFPA 54, as well as applicable local building codes.

2

Based on Rheem testing of 1/2" gas line with gas supply of 7" w.c. up to 24'; Installation conditions vary; Consult the Rheem® Use and Care Manual, the Rheem® Gas Piping Facts brochure (TK-GPF-12), the
National Fuel Gas Code (NFPA 54, ANSI Z223.1), and any other local gas codes when installing a Rheem Tankless Water Heater.

3

Individual results may vary.

4

Savings per News B ulleti n relea sed by the Un ited States Depa rtme nt of Energ y / Oak Rid ge Natio nal Laborator y, November 20 02 on study o n water and e nergy sa vings in residential hom es using H ot
Water Recir culating Sy stem.

Gas

®

Rheem® Prestige

Series

High Efficiency Tankless Gas Water Heating Solutions

MAXIMUM WATER AND ENERGY SAVINGS,
PLUS KEEPS INSTALL COSTS TO A MINIMUM

Available in both indoor and outdoor models, Rheem Ultra Low NOx, High Efficiency
Tankless solutions are loaded with features to save on installation costs, time
and servicing—while saving homeowners more money, water and space.

LOWER INSTALLATION COSTS

Installs with 2", 3" and 4" Schedule 40 PVC venting, which is easier to work
with and lower cost than stainless steel, saving you money and time

BUILT-IN CONDENSATE
NEUTRALIZER

Safely dispose of condensate without extra installation cost and time

ENERGY

SAVINGS UP TO

$

1,100

Energy Factor

Venting Type

Dimensions

Weight

Warranty

Ultra Low NOx

.93 UEF

Vents with Schedule 40 PVC

27-1/2" H x 18-1/2" W x 9-3/4" D

82 lbs.

Heat Exchanger: 12 Years Residential; 5 Years Commercial

Parts: 5 Yea rs

Labor: 1 Year

All Natural Gas Models

NEW MODELS WITH ECONET INCLUDED

Description

EcoNet WiFi Included: Indoor Direct Vent – Nat. Gas

1

EcoNet WiFi Included: Indoor Direct Vent – LP. Gas

EcoNet WiFi Included: Outdoor – Nat. Gas RTGH-95XELN-1

EcoNet WiFi Included: Outdoor – LP Gas RTGH-95XELP-1

199,900

BTU Max.

RTGH-95DVELN-1

RTGH-95DVELP-1

Description

Indoor Direct Vent – Nat. Gas RTGH-84DVLN-1 RTGH-90DVLN-1 RTGH-95DVLN-1

Indoor Direct Vent – LP. Gas RTGH-84DVLP-1 RTGH-90DVLP-1 RTGH-95DVLP-1

Outdoor – Nat. Gas RTGH-84XLN-1 RTGH-90XLN-1 RTGH-95XLN-1

Outdoor – LP Gas RTGH-84XLP-1 RTGH-90XLP-1 RTGH-95XLP-1

1

Based on compar ison aga inst 50-gallon t ank typ e model wi th like fu el type. Savings based on N atural gas model; Sa vings hig her for l iquid pr opane mo dels.

6 PRODUCT GUIDE | TANKLESS GAS WATER HEATERS 7PRODUCT GUIDE | TANKLESS GAS WATER HEATERS

157,000

BTU Max.

180,000

BTU Max.

199,900

BTU Max.

INDOOR DIRECT VENT

3

Air Intake

(PVC Venting)

2

Exhaust

(PVC Venting)

1

10

8

SAVE TIME

PVC Venting Compatible

1

Vent with 2", 3" and 4" PVC, saving time and money

Easy To Service

2

Access all parts of the heater with just a Phillips-head screwdriver

Built-In Condensate Neutralizer

7

6

5

9

4

3

Industry First!

Safely dispose of condensate without extra installation cost
and time

Half-Inch Gas Line Compatible up to 24 ft.

4

Saves money and time on installation to an existing system

Freeze Protection

5

Industry Best!

Ceramic heaters on copper pipes protect from 40ºF to -30ºF,
allowing outdoor installation

1

Condensate

Neutralizer

Discharge

Outlet

Condensate

Neutralizer

Discharge

Outlet

3/4" Hot

Water
Outlet

External
Connection
for Remote

Control Cable

OUTDOOR

3/4" Cold

Water

Inlet

3/4" Gas

Connection

INSTALL MORE

Hot Start Programming

6

RHEEM EXCLUSIVE

Minimizes cold water bursts by staying in ready-fire state for
back-to-back hot water needs

Overheat Film Wrap

7

RHEEM EXCLUSIVE

Safety feature prevents dangerous temperatures allowing industry­best, 1/2" side-to-side clearance to combustibles

Water Savings Setting

7

8

RHEEM EXCLUSIVE

Can save up to 1,100 gal/year by reducing water flow at tap until

6

2

set temperature is achieved (optional)

Low Flow Activation

9

Industry Best!

3

10

8

5

9

4

Minimum flow rate of .26 GPM and activation flow rate of .40 GPM
ensures hot water in low demand situations

Six Stage Modulating Burner

10

Tight control over burner energy efficiency

EcoNet® Enabled

11

All models from 2010 to present can connect to
EcoNet mobile app via Tankless EcoNet

3/4" Hot

Water

Outlet

External
Connection
for Remote

Control Cable

3/4" Cold

Water

Inlet

3/4" Gas

Connection

Accessory Kit (REWRA630TWH)

1

Based on Rheem testing of 1/2" gas line with gas supply of 7" w.c. up to 24'; Installation conditions vary; Consult the Rheem® Use and Care Manual, the Rheem® Gas Piping Facts brochure (TK-GPF-12),
the National Fuel Gas Code (NFPA 54, ANSI Z223.1), and any other local gas codes when installing a Rheem Tankless Water Heater.

Rheem® Classic Plus® Series

Mid-Efficiency Tankless Gas Water Heating Solutions

ENERGY EFFICIENCY AND SAFETY FEATURES,
PLUS SAVINGS ON INSTALLATION

Available in both indoor and outdoor models, our Mid-Efficiency solutions are not only
designed to save costs and time on installation and service, but also offer smart energy
savings and safety features customers love.

ENERGY

SAVINGS UP TO

1

$

800

Energy Factor

Venting Type

Dimensions

Weight

Warranty

Ultra Low NOx

.82 UEF: Indoor
.81 UEF: Outdoor

Vents with 3"/5" stainless steel concentric vent
system, (sold separately)

25-5/8" H x 13-7/8" W x 9-7/8" D (Indoor)
23-5/8" H x 13-7/8" W x 8-7/8" D (Outdoor)

54 lbs.

Heat Exchanger:

12 Ye ars Residential;
5 Years Commercial

Parts: 5 Yea rs

Labor: 1 Year

All Natural Gas Models

NEW MODELS WITH ECONET INCLUDED

Description

EcoNet WiFi Included:
Indoor Direct Vent – Nat. Gas

EcoNet WiFi Included:
Indoor Direct Vent – LP. Gas

EcoNet WiFi Included:
Outdoor – Nat. Gas

EcoNet WiFi Included:
Outdoor – LP Gas

199,900

BTU Max.

RTG-95DVELN-1

RTG-95DVELP-1

RTG-95XELN-1

RTG - 9 5XELP-1

MODEL

WITH BUILT-IN

RECIRCULATION

PUMP FOR

FASTER HOT

WATER AT

THE TAP

RECIRCULATION

SAVES UP TO

12,000

GALLONS

WATER/YEAR

Description

Indoor Direct Vent – Nat. Gas RTG-70DVLN-1 RTG-84DVLN-1 RTG-95DVLN-1

Indoor Direct Vent – Nat. Gas
with Recirculation Pump

Indoor Direct Vent – LP. Gas R TG-70DVLP-1 RTG-84DVLP-1 RTG -9 5 DVLP-1

Indoor Direct Vent – LP Gas
with Recirculation Pump

2

Outdoor – Nat. Gas RTG-70XLN-1 RTG-84XLN-1 RTG-95XLN-1

Outdoor – LP Gas RTG -70XLP-1 RTG-84XLP-1 RTG - 9 5XLP-1

160,000

BTU Max.

– – RTG-RC95DVLN-1

– – RTG-RC95DVLP-1

180,000

BTU Max.

199,900

BTU Max.

1

Based on compar ison aga inst 50-gallon t ank typ e model wi th like fu el type. Savings based on N atural gas model; Sa vings hig her for l iquid pr opane mo dels.

2

Savings per News B ulleti n relea sed by the Un ited States Depa rtme nt of Energ y / Oak Rid ge Natio nal Laborator y, November 20 02 on study o n water and e nergy sa vings in residential hom es using H ot Water
Recirculating Syste m.

8 PRODUCT GUIDE | TANKLESS GAS WATER HEATERS 9PRODUCT GUIDE | TANKLESS GAS WATER HEATERS

INDOOR DIRECT VENT

Exhaust

SAVE TIME

Easy To Service

1

Access all parts of the heater with just a Phillips-head screwdriver

Half-Inch Gas Line Compatible up to 24 ft.

2

1

Saves money and time on installation to an existing system

Freeze Protection

3

6

Industry Best!

Ceramic heaters on copper tubes protect from 40ºF to -30ºF
allowing outdoor installation

1

9

5

Maintenance Notification Setting

4

RHEEM EXCLUSIVE

Alerts homeowners after 500 hours of use (about one year -
1½ years) to call for service extending the life of the water heater
(optional)

7

4

3

Remote control included with all
tankless gas water heaters

8

2

Condensate

Neutralizer

Discharge

Outlet

3/4" Hot

Water
Outlet

OUTDOOR

External

Connection

for Remote

Control Cable

3/4" Cold

Water

Inlet

3/4" Gas

Connection

INSTALL MORE

Hot Start Programming

5

RHEEM EXCLUSIVE

Minimizes cold water sandwich by staying in ready-fire state for
back-to-back hot water needs

Overheat Film Wrap

6

RHEEM EXCLUSIVE

Safety feature prevents dangerous temperatures allowing industry­best, side-to-side clearance to combustibles

6

Water Savings Setting

7

1

5

RHEEM EXCLUSIVE

Can save up to 1,100 gal/year by reducing water flow at tap until
set temperature is achieved (optional)

9

Low Flow Activation

8

Industry Best!

7

3

8

2

Condensate

Neutralizer

Discharge

Outlet

1

Based on Rheem testing of 1/2" gas line with gas supply of 7" w.c. up to 24'; Installation conditions vary; Consult the Rheem® Use and Care Manual, the Rheem® Gas Piping Facts brochure (TK-GPF-12),
the National Fuel Gas Code (NFPA 54, ANSI Z223.1), and any other local gas codes when installing a Rheem Tankless Water Heater.

3/4" Hot

Water
Outlet

External

Connection

for Remote

Control Cable

3/4" Cold

Water

Inlet

3/4" Gas

Connection

Minimum flow rate of .26 GPM and activation flow rate of .40 GPM
ensures hot water in low demand situations

Six Stage Modulating Burner

9

Tight control over burner energy efficiency

EcoNet® Enabled

10

All models from 2010 to present can connect to
EcoNet mobile app via Tankless EcoNet
Accessory Kit (REWRA630TWH)

Rheem® Commercial Tankless Solutions

DELIVERING ENERGY SAVINGS,
FLEXIBILITY & SUPPORT

Introducing a dedicated water heating solution
for businesses with all the Rheem tankless
advantages, plus:

• Thermal Efficiency of up to 96%

• Built-in maximum temperature setting of 185°F

• Common venting options for indoor natural

gas models

• Manifold control models for linking up to 20

units with no added accessories

• Service valves included

Now Manifold

Control Ready &

Common Vent

Compatible

Description Commercial Tankless

Manifold Control Ready

To create a load sharing system, the factory-installed
manifold controller allows up to 20 units to be
connected–in daisy chain fashion– via an included
cable. Once connected, the system is load balanced,
which creates redundancy–so if one heater goes
down, the business can stay up and running.

Commercial Tankless

WITH Manifold Control

Indoor Direct Vent – Nat. Gas

Indoor Direct Vent – LP Gas RTGH-C95DVLP

Outdoor – Nat. Gas RTGH-C95XLN

Outdoor – LP Gas RTGH-C95XLP

1

Accord ing to a 2016 survey of tankle ss contra ctors by Ha nover Research o n behal f of Rhee m.

10 PRODUCT GUIDE | TANKLESS GAS WATER HEATERS 11PRODUCT GUIDE | TANKLESS GAS WATER HEATERS

RTGH-C95DVLN

RTGH-CM95DVLN

RTGH-CM95DVLP

RTGH-CM95XLN

RTGH-CM95XLP

CONTROL YOUR TANKLESS SYSTEM

190 GPM

Number of Heaters in a Manifold

Rheem’s new line of commercial tankless solutions
includes four options with a factory-installed manifold
control translator for connecting up to 20 units – in
daisy-chain configuration – via included manifold
control cable. Once manifolded, the tankless water
heaters balance the workload as a system.

LESS DOWNTIME

Having multiple units working together creates
redundancy, so if one tankless water heater goes
down, your customer’s business stays up
and running.

Tankless Multi-Unit Flow Rates

Manifold

QTY

Total System BTU

based on

199,900 Btu per Unit

35 45 50 60 70 77 80 90 100 110 120 140

Total System Gallons Per Minute (GPM) - Per Temperature Rise (∆T)

1 199,900 9.5 8.4 7.5 6.3 5.4 4.9 4.7 4.2 3.8 3.4 3.1 2.7
2 399,800 19.0 16.7 15.0 12.5 10.7 9.8 9.4 8.4 7.5 6.8 6.3 5.4
3 599,700 28.5 25.1 22.5 18.8 16.1 14.6 14.1 12.5 11.3 10.2 9.4 8.1
4 799,600 38.0 33.4 30.1 25.1 21.5 19.5 18.8 16.7 15.0 13.7 12.5 10.7
5 999,500 47.5 41.8 37.6 31.3 26.8 24.4 23.5 20.9 18.8 17.1 15.7 13.4
6 1,199,400 57.0 50.1 45.1 37.6 32.2 29.3 28.2 25.1 22.5 20.5 18.8 16.1
7 1,399,300 66.5 58.5 52.6 43.8 37.6 34.2 32.9 29.2 26.3 23.9 21.9 18.8
8 1,599,200 76.0 66.8 60.1 50.1 42.9 39.0 37.6 33.4 30.1 27.3 25.1 21.5

9 1,799,100 85.5 75.2 67.6 56.4 48.3 43.9 42.3 37.6 33.8 30.7 28.2 24.2
10 1,999,000 95.0 83.5 75.2 62.6 53.7 48.8 47.0 41.8 37.6 34.2 31.3 26.8
11 2,198,900 104.5 91.9 82.7 68.9 59.1 53.7 51.7 45.9 41.3 37.6 34.4 29.5
12 2,398,800 114.0 100.2 90.2 75.2 64.4 58.6 56.4 50.1 45.1 41.0 37.6 32.2
13 2,598,700 123.5 108.6 97.7 81.4 69.8 63.4 61.1 54.3 48.9 44.4 40.7 34.9
14 2,798,600 133.0 116.9 105.2 87.7 75.2 68.3 65.8 58.5 52.6 47.8 43.8 37.6
15 2,998,500 142.5 125.3 112.7 94.0 80.5 73.2 70.5 62.6 56.4 51.2 47.0 40.3
16 3,198,400 152.0 133.6 120.3 100.2 85.9 78.1 75.2 66.8 60.1 54.7 50.1 42.9
17 3,398,300 161.5 142.0 127.8 106.5 91.3 83.0 79.9 71.0 63.9 58.1 53.2 45.6
18 3,598,200 171.0 150.3 135.3 112.7 96.6 87.9 84.6 75.2 67.6 61.5 56.4 48.3
19 3,798,100 180.5 158.7 142.8 119.0 102.0 92.7 89.3 79.3 71.4 64.9 59.5 51.0
20 3,998,000 190.0 167.0 150.3 125.3 107.4 97.6 94.0 83.5 75.2 68.3 62.6 53.7

Tankless Multi-Unit Flow Rate Curve

150 GPM

100 GPM

50 GPM

30 GPM

20 GPM

16 GPM

12 GPM

0.4 GPM

Delta - T

35F

50F

70F

100F

140F

8 GPM

6 GPM

4 GPM

2 GPM

1 202 3 4 5 6 7 8 9 10 12 14 16 18

Rheem® Parts & Accessories

for use with RTG & RTGH series (excluding -RH models)

Cosmetic Pipe Covers

Enhance the installation of the water heater and provides
protection from tampering and weather.

• RTG20227 - Fits RTGH DV or X Series

• RTG20217DVG - Fits RTG DV Series

• RTG20217XG - Fits RTG X Series

Outdoor Recess Box

Mount an outdoor unit into the wall, flush with the
outside of the home.

• RTG20226 - Fits RTGH X Series

• RTG20218 - Fits RTG X Series

• RTG20253 - For Stucco - Fits RTGH X Series

Remote Controls

• RTG20006DW - UMC-117 - Main

• RTG20006DU - USC1-117 - Bath

One rem ote is
includ ed with
each unit

• RTG20006DV - USC2-117 - Second Bath

• RTG20009-1 - 10' - Thermostat Wire 1 pair 18AWG

SEE THE

TANKLESS PARTS

AND ACCESSORIES

CATALOG FOR

MORE OPTIONS

ECONET® SMART HOME

EcoNet® WiFi Kit

Provides remote access to tankless unit from
mobile app

• REWRA630TWH – EcoNet Translator

and WiFi Kit for tankless water heaters

CONNECTING MULTIPLE UNITS

EZ-Link™ Cable

Connect two tankless water heaters to
operate as a single unit

• RTG20040 - 6-ft. Cable with Connectors

and Support Clamps

MIC-6 Manifold Controller System

Kit mounts inside a single tankless unit and con­nects to up to 5 additional units for a total of 6.

• RTG20213A - Includes (1) 1-ft. control cable and

(1) 6-ft. control cable

MIC-185 Manifold Controller System

• RTG20126A - Manifold and control up to 6 tankless

models. Includes installation cabinet for indoor or
outdoor applications

MICS-180 Manifold Controller Expansion Card

• RTG20126B - Add on to the MIC-185 to expand up

to 20 unit systems. Mounts inside MIC-185 cabinet.
Includes cables to connect to the MIC-185 board

Recirculation Pump Kit – Timer Based

• AP17920 - Kit contains: (1) Taco Genie® 0015

recirculation pump with internal check valve,
(2) Stainless steel flanges and flange gaskets,
(4) 7/16" – 14 Bolts

Manifold Control Cables (Type K)

One cable required for each tankless unit connected to
the MIC 180.

• RTG20126C - Cable - MIC-K-16, 16-ft. Control Cable

12 PRODUCT GUIDE | TANKLESS GAS WATER HEATERS

Recirculation Pump Kit – On Demand

• AP18403 - On demand pump kit - standard

• AP18537 - On demand pump kit - under sink

Rheem® Parts & Accessories

for use with RTG-RC models with built-in recirculation

Push Button

Wired Push Button
For On Demand
Activation or
Recirculation Pump

• SP20863

Remote Receiver
and Transmitter Kit

Wireless Remote
Transmitter Kit For On
Demand Activation of
Recirculation Pump

• SP20861

Rheem® Parts & Accessories

for use with RTGH-RH models with built-in recirculation

Condensate
Neutralizer

For safe disposal of
condensate (check
your local plumbing
codes)

• SP12151

On-Demand
Activation
Accessory

Converts timer based
pump to on-demand
activation, with
included wall switch

• RTG20941

Motion Sensor
Kit

Motion Sensor Kit
For On Demand
Activation of
Recirculation Pump

• SP20862 -

Quick Connect
Cable

For 2 unit manifolding
(Coming Soon)

• SP20892

PARTS AND ACCESSORIES FOR USE WITH ANY TANKLESS MODEL

AllClear™ Water
Treatment System

Combat hard water and
scale build up

• RTG20251 - AllClear

Water Treatment
System

• RTG20252 -

Replacement Cartridge

™

NEW EZ-RACK™ KIT

Mounts easily to a wall or free standing.
Additional kits to hold any number of units.
Assembles easily on the jobsite in under 10 minutes.

• RTG20304

Flush Kit

Connects to the service
valves for an easy way to
de-scale your tankless
water heater.

• RTG2 0214 - Includes

pump, hoses and
5-gallon bucket

Service Valves

Webstone®-Brand

• RTG20220AB - Clean

Brass for Low Lead
Code - Includes cold
and hot water set and
pressure relief valve

NEW

Crossover Valve

Converts cold water line
into recirculation return for
use with built-in recirculation
models or accessory pumps

• RTG20285

13PRODUCT GUIDE | TANKLESS GAS WATER HEATERS

Tankless Venting

3"/5" Concentric Vent System

PVC Vent System

Outdoor

Complete Your Installation with Rheem® Venting Components
and Accessories

VENTING OPTIONS
AND INSTALLATIONS

All indoor tankless units must be vented
to the outdoors using manufacturer
approved venting material.

Venting for Condensing Tankless RTGH Series

PVC Termination Kits | Allow for an aesthetic and easy installation

Horizontal or Vertical
Concentric Termination

Combines a two-pipe vent
system to a single, concentric
through-the-wall or roof
penetration. Designed for
two-pipe direct vent, fits PVC
or CPVC venting. Installed
dimensions: 39"H x 7-1/4"D

• SP20245 - For 3" PVC

Venting

Horizontal Vent
Termination

Low profile design for two­pipe direct vent, fits PVC
or CPVC venting. Installed
dimensions:
11-3/4"W x 8"W x 2-1/2"D

• SP20286 - For 3" PVC

Venting

• SP20285 - For 2" PVC

Venting

Venting for Mid Efficiency Tankless RTG Series

Stainless Steel Vent System | 3" x 5" Concentric Category III Metal Fab

Horizontal Vent Kit

Low profile cone design for
concentric direct vent systems.
Includes 90˚ elbow, short,
low-profile termination and
installation screws.

• RTG20231 - Up to 6" walls

• RTG20234 - Up to 8" walls

Economy Vent Kit

• RTG20210 - Up to 10" walls

Vertical Termination Kit

Concentric direct vent systems.
Stainless steel and galvanized
construction. Includes vertical
termination cap, storm collar,
6-12 pitch roof flashing and
installation screws. Vent pipe
not included.

• RTG 2 0211 - Vertical Vent Kit

Additional venting and accessories
are available. See Catalog for details.

PVC VENT SYSTEM

INDOOR

Horizontal

vent

termination

INDOOR

Ver tic al

vent

termination

3"/5" CONCENTRIC
VENT SYSTEM

INDOOR

Horizontal

vent

termination

INDOOR

Ver tic al

vent

termination

Stainless Steel Metal Fab Venting Components and Accessories

90˚ Elbow

8.1" rise – 8.1" run

• RTG20151A-1

14 PRODUCT GUIDE | TANKLESS GAS WATER HEATERS

45˚ Elbow

8.6" rise – 3" run

• RTG20151B-1

6" Vent Length

5.66" overall length

• RTG20151W

24" Vent Length

23.66" overall length

• RTG20151C-1

Wall Hanger

2-point pivot
mounting

• RTG20151H

12" Vent Length

11.66" overall length

• RTG20151R

36" Vent Length

35.66" overall length

• RTG20151D-1

Wall Thimble

17" wide for up to
6" deep walls, with
drywall and stucco
rings, ideal for new
construction

• RTG20151Z

OUTDOOR

OUTDOOR*

Recess box

installation

Venting details, including clearances,
instructions and diagrams can be
found in the “Use & Care Manual” of
Rheem indoor tankless water heaters.

(ULCS636 Pipe must be used for
Canada.)

* Outdoor units do not require venting materials.

OUTDOOR*

installation

Rheem® Commercial Tankless Common Venting

Header kits include all required venting pieces to connect multiple units. Additional vent run accessories are required to complete
installation. Common venting header kits are available for inline or back to back installations, direct vent or room air intake
options, using 6”, 8” and 10” trunk diameters.

Inline Header Kits

Trunk

Diameter

6"

8"

10"

Number

of units

2 SP20906A SP20907A
3 SP20906B SP20907B
4 SP20906C SP20907C
2 SP20908A SP20909A
3 SP20908B SP20909B
4 SP20908C SP20909C
5 SP20908D SP20909D
6 SP20908E SP20909E
7 SP20908F SP20909F
8 SP20908G SP20909G
2 SP20910A SP20911A
3 SP20910B SP20911B
4 SP20910C SP20911C
5 SP20910D SP20911D
6 SP20910E SP20911E
7 SP20910F SP20911F
8 SP20910G SP20911G
9 SP20910H SP20911H

10 SP20910J SP20911J

Direct Vent

Part No.

Vent Run Accessories

Room Air

Part No.

Back to Back Header Kits

Trunk

Diameter

6"

8"

10"

NOTE: Diagrams illustrate direct vent and horizontal exhaust. Room air intake and
vertical exhaust configuration also available, but not pictured.

For more information, visit
Rheem.com/commercial-tankless

Number

of units

2 SP20912A SP20913A
3 SP20912B SP20913B
4 SP20912C SP20913C
2 SP20914A SP20915A
3 SP20914B SP20915B
4 SP20914C SP20915C
5 SP20914D SP20915D
6 SP20914E SP20915E
7 SP20914F SP20915F
8 SP20914G SP20915G
2 SP20916A SP20917A
3 SP20916B SP20917B
4 SP20916C SP20917C
5 SP20916D SP20917D
6 SP20916E SP20917E
7 SP20916F SP20917F
8 SP20916G SP20917G

Direct Vent

Part No.

Room Air

Part No.

Image

No.

1 Air Intake Branch Tee SP20918AD SP20918L SP20918AE
2 87 Degree Elbow SP20918BE SP20918M SP20918BM
3 45 Degree Elbow SP20918BF SP20918N SP20918BN
4 Straight Pipe, 1' SP20918BG SP20918P SP20918BP
5 Straight Pipe, 2' SP20918BH SP20918R SP20918BR
6 Straight Pipe, 3' SP20918BJ SP20918S SP20918BS
7 Straight Pipe, 6' SP20918BK SP20918T SP20918BT

8

9 Bird Screen SS SP20918AY SP20918V SP20918AZ
10 Tee Termination SP20918BA SP20918W SP20918BB
11 Support Clamp SP20918AW SP20918AA SP20918AX

Part

Description

90 Degree Elbow

Vertical Support

6" 8" 10"

SP20918BL SP20918U SP20918BU

1

8

2

9

3

10

4

5

6

7

15PRODUCT GUIDE | TANKLESS GAS WATER HEATERS

RHEEM® FINANCING PARTNERSHIP

Don’t let limited cash-on-hand keep you
from being comfortable.

The Rheem KwikComfort® Financing program makes it easy to
find a financing option that works for you! With many options and
benefits available, KwikComfort
the home comfort you need without the wait.

®

Financing is the best way to get

PROTECH® Service & Parts Kit

These kits, designed with the contractor in mind, provide all
the basic parts necessary for a complete repair of a Rheem
tankless gas water heater.

• PROTECH PD966349

Mid-Efficiency Direct Vent Models

• PROTECH PD966350

Mid-Efficiency Outdoor Models

• PROTECH PD966351

Condensing Models

CONTACT US

Customer Service, Warranty, Parts .......................... 800-621-5622

Tankless Support.....................................................866-720-2076

Technical Service.................................................... 800-HEATER3

(800-432-8373)

Visit us online at rheem.com/tanklessinnovation

or see your local distributor.

All Rheem Tankless Water Heaters meet or exceed ANSI requirements and have been tested according

to D.O.E. procedures. Units meet or exceed th e energ y effic iency require ments of N AECA, A SHRAE,

standard 90, ICC Code and all state energy efficiency performance criteria. All units meet or exceed

SCAQMD rule 1146.2 for California Emission Requirements.

In keeping with its policy o f continuous prog ress and product i mprovement, Rhe em rese rves th e right to

make changes without notice.

LEED Points = 2

Rheem Water Heating

1115 Northmeadow Parkway, Suite 100

Roswell, Georgia 30076

Rheem.com

Printed in U.S.A. 12/17 WP 101-66-10 Rev. 19