Rinnai Sizing Reference Guide for Tankless Rack Systems Utilizing Storage User Manual download pdf

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

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

Number of

TWH

Model**

WH Max

BTUH Input

Tank Size

(Gal.)

Recovery Pump Size

Recovery

Efﬁciency

Recovery

GPM

Recovery

GPH

First Hour

Delivered

(Gal.)

Recovery

GPM

Recovery

GPH

First Hour

Delivered

(Gal.)

Recovery

GPM

Recovery

GPH

First Hour

Delivered

(Gal.)

Recovery

GPM

First Hour

Delivered

(Gal.)

Recovery

GPM

Recovery

GPM

Recovery

GPH

First Hour

Delivered

(Gal.)

GPM Head (ft)

TRW02/

TRS02

398,000

100

12 30 95% 12.6 756

826

10.8 648

718

9.5 567

637

8.4 504

574

7.6 454

524

200 896 788 707

644 594

300 966 858 777

714 664

TRW03/

TRS03

597,000

100

18 30 95% 18.9 1,134

1,204

16.2 972

1,042

14.2 851

921

12.6 756

826

11.3 681

751

200 1,274 1,112 991

896 821

300 1,344 1,182 1,061

966 891

400 1,414 1,252 1,131

1,036 961

TRW04/

TRS04

796,000

100

24 30 95% 25.2 1,512

1,582

21.6 1,296

1,366

18.9 1,134

1,204

16.8 1,008

1,078

15.1 907

977

200 1,652 1,436 1,274

1,148 1,047

300 1,722 1,506 1,344

1,218 1,117

400 1,792 1,576 1,414

1,288 1,187

500 1,862 1,646 1,484

1,358 1,257

(TRW02 +

TRW03)

TRS05

995,000

200

30 30 95% 25.2 1,512

1,652

27.0 1,296

1,436

23.6 1,418

1,558

21.0 1,260

1,400

18.9 1,134

1,274

300 1,722 1,506 1,628

1,470 1,344

400 1,792 1,576 1,698

1,540 1,414

500 1,862 1,646 1,768

1,610 1,484

6 TRS06 1,194,000

200

36 30 95% 37.8 2,269

2,409

32.4 1,945

2,085

28.4 1,701

1,841

25.2 1,512

1,652

22.7 1,361

1,501

300 2,479 2,155 1,911

1,722 1,571

400 2,549 2,225 1,981

1,792 1,641

500 2,619 2,295 2,051

1,862 1,711

7 ** 1,393,000

300

42 30 95% 44.1 2,647

2,857

37.8 2,269

2,479

33.1 1,985

2,195

29.4 1,764

1,974

26.5 1,588

1,798

400 2,927 2,549 2,265

2,044 1,868

500 2,997 2,619 2,335

2,114 1,938

8 ** 1,592,000

300

48 30 95% 50.4 3,025

3,235

43.2 2,593

2,803

37.8 2,269

2,479

33.6 2,017

2,227

30.2 1,815

2,025

400 3,305 2,873 2,549

2,297 2,095

500 3,375 2,943 2,619

2,367 2,165

9 ** 1,791,000

300

54 30 95% 56.7 3,403

3,613

48.6 2,917

3,127

42.5 2,552

2,762

37.8 2,269

2,479

34.0 2,042

2,252

400 3,683 3,197 2,832

2,549 2,322

500 3,753 3,267 2,902

2,619 2,392

10 ** 1,990,000

400

60 30 95% 63.0 3,781

4,061

54.0 3,241

3,521

47.3 2,836

3,116

42.0 2,521

2,801

37.8 2,269

2,549

500 4,131 3,591 3,186

2,871 2,619

11 ** 2,189,000

400

30 95% 69.3 4,159

4,439

59.4 3,565

3,845

52.0 3,119

3,399

46.2 2,773

3,053

41.6 2,495

2,775

500 4,509 3,915 3,469

3,123 2,845

12 ** 2,388,000

400

72 30 95% 75.6 4,537

4,817

64.8 3,889

4,169

56.7 3,403

3,683

50.4 3,025

3,305

45.4

2,722 3,002

500 4,887 4,239 3,753

3,375 3,072

** 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.

8.5” 7.25” 5.5”

Performance Chart

FOR TANKLESS RACK SYSTEMS UTILIZING STORAGE

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.

Cross Reference for Existing or

Speciﬁed Systems

Existing System

Existing

or Speciﬁed Systems

BTUH

Storage

Tank

Size

Existing or

Speciﬁed TE

400,000

As specied

or existing

≥ 93%

600,000

As specied

or existing

≥ 93%

800,000

As specied

or existing

≥ 93%

1,000,000

As specied

or existing

≥ 93%

1,200,000

As specied

or existing

≥ 93%

1,400,000

As specied

or existing

≥ 93%

1,600,000

As specied

or existing

≥ 93%

1,800,000

As specied

or existing

≥ 93%

2,000,000

As specied

or existing

≥ 93%

2,200,000

As specied

or existing

≥ 93%

2,400,000

As specied

or existing

≥ 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

1 2

Summary of Contents

Page 1 - Performance Chart

Recovery Capacity and First Hour Delivered @ Temperature rise (°F) with Storage TankRack System Conﬁgurations 60° Temperature Rise 70° Temperature Ris

Page 2 - Sizing Reference Guide

How to Select a TRS System Using TRS Performance Chart (Recovery GPH / First Hour Delivered Required):Find value closest to speciﬁed recovery GPH or ﬁ

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Rinnai Sizing Reference Guide for Tankless Rack Systems Utilizing Storage User Manual

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