Rinnai Performance Chart Miscellaneous Information

8.5” 7.25” 5.5”

Performance Chart

FOR TANKLESS RACK SYSTEMS UTILIZING STORAGE

Rack System Conﬁgurations 60° Temperature Rise 70° Temperature Rise 80° Temperature Rise 90° Temperature Rise 100° Temperature Rise

Number of

TWH

6 TRS06 1,194,000

7 ** 1,393,000

8 ** 1,592,000

9 ** 1,791,000

10 ** 1,990,000

11 ** 2,189,000

12 ** 2,388,000

Model**

TRW02/

TRS02

TRW03/

TRS03

TRW04/

TRS04

(TRW02 +

TRW03)

TRS05

BTUH Input

398,000

597,000

796,000

995,000

WH Max

Recovery Capacity and First Hour Delivered @ Temperature rise (°F) with Storage Tank

Recovery Pump Size

Tank Size

(Gal.)

GPM Head (ft)

100

200 896 788 707

300 966 858 777

100

200 1,274 1,112 991

300 1,344 1,182 1,061

400 1,414 1,252 1,131

100

200 1,652 1,436 1,274

300 1,722 1,506 1,344

400 1,792 1,576 1,414

500 1,862 1,646 1,484

200

300 1,722 1,506 1,628

400 1,792 1,576 1,698

500 1,862 1,646 1,768

200

300 2,479 2,155 1,911

400 2,549 2,225 1,981

500 2,619 2,295 2,051

300

400 2,927 2,549 2,265

500 2,997 2,619 2,335

300

400 3,305 2,873 2,549

500 3,375 2,943 2,619

300

400 3,683 3,197 2,832

500 3,753 3,267 2,902

400

500 4,131 3,591 3,186

400

500 4,509 3,915 3,469

400

500 4,887 4,239 3,753

12 30 95% 12.6 756

18 30 95% 18.9 1,134

24 30 95% 25.2 1,512

30 30 95% 25.2 1,512

36 30 95% 37.8 2,269

42 30 95% 44.1 2,647

48 30 95% 50.4 3,025

54 30 95% 56.7 3,403

60 30 95% 63.0 3,781

72 30 95% 75.6 4,537

30 95% 69.3 4,159

Recovery

Efﬁciency

Recovery

GPM

Recovery

GPH

First Hour Delivered

(Gal.)

826

1,204

1,582

1,652

2,409

2,857

3,235

3,613

4,061

4,439

4,817

Recovery

GPM

10.8 648

16.2 972

21.6 1,296

27.0 1,296

32.4 1,945

37.8 2,269

43.2 2,593

48.6 2,917

54.0 3,241

59.4 3,565

64.8 3,889

Recovery

GPH

First Hour Delivered

(Gal.)

718

1,042

1,366

1,436

2,085

2,479

2,803

3,127

3,521

3,845

4,169

Recovery

GPM

9.5 567

14.2 851

18.9 1,134

23.6 1,418

28.4 1,701

33.1 1,985

37.8 2,269

42.5 2,552

47.3 2,836

52.0 3,119

56.7 3,403

Recovery

GPH

First Hour Delivered

(Gal.)

637

921

1,204

1,558

1,841

2,195

2,479

2,762

3,116

3,399

3,683

Recovery

GPM

8.4 504

12.6 756

16.8 1,008

21.0 1,260

25.2 1,512

29.4 1,764

33.6 2,017

37.8 2,269

42.0 2,521

46.2 2,773

50.4 3,025

First Hour Delivered

(Gal.)

Recovery

GPM

574

644 594

714 664

826

896 821

966 891

1,036 961

1,078

1,148 1,047

1,218 1,117

1,288 1,187

1,358 1,257

1,400

1,470 1,344

1,540 1,414

1,610 1,484

1,652

1,722 1,571

1,792 1,641

1,862 1,711

1,974

2,044 1,868

2,114 1,938

2,227

2,297 2,095

2,367 2,165

2,479

2,549 2,322

2,619 2,392

2,801

2,871 2,619

3,053

3,123 2,845

3,305

3,375 3,072

Recovery

GPM

7.6 454

11.3 681

15.1 907

18.9 1,134

22.7 1,361

26.5 1,588

30.2 1,815

34.0 2,042

37.8 2,269

41.6 2,495

45.4

Recovery

GPH

2,722 3,002

First Hour Delivered

(Gal.)

1,274

1,501

1,798

2,025

2,252

2,549

2,775

524

751

977

Cross Reference for Existing or

Speciﬁed Systems

Existing System

Existing

or Speciﬁed Systems

BTUH

400,000

600,000

800,000

1,000,000

1,200,000

1,400,000

1,600,000

1,800,000

2,000,000

2,200,000

2,400,000

Storage

Tank

Size

As specied

or existing

As specied

or existing

As specied

or existing

As specied

or existing

As specied

or existing

As specied

or existing

As specied

or existing

As specied

or existing

As specied

or existing

As specied

or existing

As specied

or existing

Existing or

Speciﬁed TE

≥ 93%

DEFINITIONS:

Tank capacity: capacity of water in gallons inside storage tank as stated by manufacturer

Recovery pump: pump that will circulate water from tank to TRS during recovery period

Recovery ﬂow rate: ﬂow rate in gpm at which volume inside tank is being recovered

Recovery GPH: the water heater’s ability to replenish hot water as it’s drawn from the tank

Recovery efﬁciency: the ratio of energy delivered to the water to the energy content of the fuel consumed by the water heater

First Hour Delivered (Gal): useable volume of water that can be drawn in one hour and is determined using the following formula

First Hour Delivered (Gal) = Recovery GPH +Tank capacity x 0.70

Temperature rise: temperature difference in °F between the TRS set point and the incoming water temperature

Note: This chart should be used only when the existing or speciﬁed system is known. Select TRS model to the left of chart. Use existing or speciﬁed storage tank with TRS selection. Reference chart to left for recovery GPH performance. To calculate “First Hour Delivered” add 70% of existing or speciﬁed tank volume to recovery GPH.

** Note: Multiple congurations available. TRS models are Free-Standing units;

TRW models are Wall-Mount units.Reference TRS Manual and Specication.

If common venting is used with the TRS, please contact Rinnai for assistance.

How to Select a TRS System Using TRS Performance

8.5”7.25”5.5”

Chart (Recovery GPH / First Hour Delivered Required):

Find value closest to speciﬁed recovery GPH or ﬁrst hour delivered at temperature rise. Select corresponding TRS system, storage tank and recovery pump size to the left of the table.

For example: If speciﬁed First hour delivered is 900 gallons @60° F rise, select TRS system corresponding to 896 gallons:

TRS System: TRS02 or TRW02 Storage tank size: 200 gallons Recovery pump size: 12 GPM @30 ft head

How to Select a TRS System Using TRS Cross Reference Chart:

Find existing or speciﬁed system BTUH and thermal Eff (TE) to the left of chart, match closely to TRS system BTUH and select TRS System with recovery pump accordingly.

For example: If existing or speciﬁed system BTUH is 400,000 and thermal Eff ≥ 93%

TRS System: TRS02 or TRW02 Storage tank size: as speciﬁed or existing Recovery pump size: 12 GPM @ 30 ft head

Product Sizing Disclaimers

This Sizing Reference Guide and all information contained herein is based on the proper installation and use of (1) a series of Rinnai Tankless Water Heaters which are piped to a storage tank and (2) an adequate and properly-sized Recovery Pump that will recover the storage tank (i.e., that will circulate water from the Rinnai Tankless Water Heaters into the storage tank) thereby allowing the Rinnai Tankless Water Heaters to properly heat the water for the storage tank.

This Sizing Reference Guide is intended to be used as a guide only and not as a replacement for a professionally-engineered project. The guide should only be referenced after your design criteria has been selected and approved by your design engineer and/or contractor. The guide is intended to assist the user in determining the model type and number of products that can be utilized for a particular application. The information set forth herein is for general assistance and information only and should not be the sole factor in making any decision about a speciﬁc system or product.

For additional information, please refer to the Rinnai Hot Water System Design Manual or contact the Application Engineering Department at Rinnai America Corporation.

Sizing Reference Guide

FOR TANKLESS RACK SYSTEMS UTILIZING STORAGE

A tradition of

For nearly 100 years, we at Rinnai have been ercely committed to

delivering nothing less than our absolute best at every touch point.

To us, that means more than manufacturing products—it’s about

inspiring condence in our customers. Condence in the comfort

our solutions give. And in the support we provide.

TRUE RELIABILITY.

The information set forth herein regarding performance of a TRS/Storage tank system does not, and is not intended to imply, warrant, or represent that a speciﬁc system is adequate or appropriate for your given application.

The sizing information set forth herein does not describe a complete system. Anyone using this Sizing Reference Guide is ultimately responsible for determining the actual hot water demand for the speciﬁc application and for selecting appropriate Rinnai products for the given application.

Your design engineer and/or contractor must determine the necessary components for and conﬁguration of the particular system being installed. All such design conditions must be met. The information contained herein does not imply compliance with local building codes. It is the responsibility of your design engineer and/or contractor to ensure that installation of any system is performed in accordance with all applicable building codes. You should always confer with local building ofﬁcials before installation.

An adequate and properly-sized Recovery Pump is critical to the proper performance and operation of the systems described herein. Indeed, the systems described herein will only work with an adequate and properly-sized Recovery Pump.

Ensure that all water supply pipes are sized per local plumbing codes.

Multiple TRS should be installed in parallel using a secondary manifold from the building’s cold and hot water supply. You should reference the particular section of the TRS installation manual for piping multiple racks.

The building’s circulation pump must be controlled by an aquastat, timer, or both.

The Recovery Pump must be controlled by a submersible aquastat placed inside the tank. A minimum 20°F differential temperature setting is required for the aquastat. For example, if the Rinnai set point is 140°F, then the aquastat activation set point should be 120°F.

Always refer to the storage tank and aquastat manufacturer installation instructions for additional information.

Only use pumps of brass, bronze, or stainless steel construction. Do not use pumps of iron construction.

If the intended installation of a system is located in a hard water area, a softener or similar water treatment system must be used.

Learn more about our high-performance Tankless Water Heaters,

Boilers and Direct Vent Wall Furnaces at www.rinnai.us

Rinnai America Corporation • 103 International Drive, Peachtree City, GA 30269

Toll-Free: 1-800-621-9419 • Phone: 678-829-1700 • www.rinnai.us

R-PRWH-E-25 08/2013

to change without prior notice. Local, state, provincial, federal and national fuel gas codes must be adhered to prior to and upon installation.

FOR TRADE PROFESSIONALS