Tankless Rack System By Rinnai

Tankless Rack System

By Rinnai

Rinnai’s objective:

To supply a packaged water heater solution as fully assembled systems. The system/kit would include all water/gas connections and manifolds under the units. Installer mounts rack system with any necessary venting and connects his utilities at which time the system is ready for operation

– Offerings to include;• In-Line or Wall Mount – 2 & 3 unit rack • Back to Back Mount; 2 – 4 or 3 - 6 unit rack• Rack systems can be combined in combinations up to 25 water heaters.

Ojective of Rack System

2

Features and Benefits:

•Pre-assembled rack with water heaters installed

•Racks can be used with RU98 indoor/outdoor water heaters ONLY

•In-Line or Back to Back free standing options

•Gas and water manifolds properly sized for each rack system

•Rinnai MSB electronic control system available for linking up to 25 units

•MCC-91-2 commercial controller available for temperatures between 140˚F and 185˚F

Features & Benefits

3

Features and Benefits continue:

•Flexible gas/water lines

•Drain tees for gas sediment traps

•Reinforced eyelets on back to back racks for lifting purposes

•Marine grade powered coated aluminum racks

•Fully assembled TRS (with water heaters) is designed to fit through a standard 32 inch door

Features & Benefits

4

Back to Back Assembly

5

Actual 4 Unit Back to Back Rack Assembly

Integrated Manifold

6

Integrated Manifolds for both In-line and Back to Back Rack Systems

Top Frame Center Frame

In-Line Frame Design

7

– Uni-Strut Vertical legs /Sheet Metal bracing.• Uni-Strut – Galvanized Steel• Sheet Metal is 0.090” Aluminum w/powder coat

– Frame uses (12) 5/16” threaded bolts to secure the top and center bracing.

– Use up to #10 screws to mount to wall studs, 0.219” holes are 2” apart for ease of installation

• Manifold Kits– Hot & Cold Water – Type “L” Copper – Manifolds properly sized to handle maximum flow of system – Universal manifold for hot /cold water lines– Gas – Black Iron w/powder coat

• Branch Lines– CSST ¾” from water heaters to manifolds - all connections– RIK kits include for hot/cold water feeds to manifold. – ¾” manual shut off or service valve provided for each water heater– ¾” CSST gas branch lines with yellow epoxy coating

Manifold Data

8

In-Line lifting requirements - place straps here

Back to Back lifting requirements

Proper lifting points for Rack Systems

Lifting Points

9

REU-MSB Control System:

•The MSB-M main board is supplied with (2) MSB-C1 cables, (one short & one long) to connect the first two units up to the main MSB-M board.

•Additional MSB-C1 cables will be needed to connect a third, forth or fifth unit to a MSB board. If installing more than five units the combination of MSB-M boards plus C1 and C2 cables will be determined on site based on the water heater configuration you choose.

•Up to 5 MSB-M boards can be linked together with communication cables (MSB-C2’s) allowing up to 25 water heaters to operate as a single system.

•An MSB system could have an operating range from 10,000 BTU to as great as 5 million BTU’s in terms of flow rate, from 0.4 gpm to 245 gpm.

•When multiple water heaters are linked together with MSB controls, they will attempt to supply equal amounts of hot water. They will also rotated occasionally to ensure equal usage among the entire system.

•On initial water flow 1 to 3 units will fire up based on the dip switch configuration of the Main MSB board. Once the flow rate is determined, the MSB board will cycle additional units on or off as needed. Water heaters not firing will close their servo valves.

MSB System

10

MSB Control System continue

•The temperature setting for all water heaters in a manifold system are controlled by the primary unit connected to the Main MSB board. The temperature controllers connected to other units will display the set temperature selected on the primary unit and cannot be adjusted individually. Additionally they will display error codes and can be used for diagnostics for that particular unit.

•If a water temperature over 140 ˚F is desired, the MCC-91-2 controller must be installed on the water heater with the Main MSB board.

• Dip switches on the MSB-2M board determine the number of units in standby. It is recommended that the Main MSB-M board dip switches are set for three units to be in the standby mode. All other MSB-M boards should be set to one unit in standby. Place dip switch #1 and #2 on the Main MSB-M board to the “OFF” position, this will place three units in the standby mode. Place dip switch #1 & #2 to the other MSB-M boards to the “ON” position. That will place one unit in those banks in the standby mode. The system will always allow three units to be in standby, as long as the Main MSB-M board is set to three units as explained above.

•

MSB System

11

12

MSB Control System (continued)

All MSB boards must be set up to communicate with the other boards. This is achieved by setting the dip switches on the MSB boards to the proper positions, follow steps a – e below:

MSB System

LED #6

Dip switches

a. Set dip switch #3 on the Main MSB board to the “ON” position.

b. Set dip switch #4 on the second MSB board to the “ON” position.

c. Set dip switch #3 & #4 on the third MSB board to the “ON” position.

d. Set dip switch #5 on the fourth MSB board to the “ON” position.

e. Set dip switch #3 & #5 on the fifth MSB board to the “ON” position

In all steps, LED #6 will light to confirm connection.

In-Line TRW02 Specifications

4

2

6

5

9

8

3

1

7

Water and gas flex lines are included on all rack systems.

In-Line TRW02

NO. DESCRIPTION QTY.

1 Frame, Top 1

2 Frame, Bottom 1

3 Rinnai Tankless Indoor or Outdoor Unit 2

4 Manifold, Cold Water 1

5 Manifold, Hot Water 1

6 Manifold Gas 1

7 3/4” Dirt Leg 2

8 P1000 Unistrut Channel 2

9 3/4 FNPT Brass Ball Valve - Gas 2

TRW02 Specifications

13

In-Line TRW02 Dimensions

2.000 TYP

41.420

2.710(3) Plcs

36.000

24.28

54.594

1.404

39.028

20.500 TYP

3.447

4.500

9.375

14.375

26.002

52.404 54.384

54.875

7.967 12.641

TRW02 Dimensions

14

In-Line TRW03 Specifications

4

2

6

5

8

3

1

7

9


1 Frame, Top 1

2 Frame, Bottom 1

3Rinnai Tankless Indoor or Outdoor Unit

3



6 Manifold, Gas 1

7 3/4” Dirt Leg 3

8 P1000 Unistrut Channel 2

93/4 FNPT Brass Ball Valve - Gas

3


In-Line TRW03

TRW03 Specifications

15

In-Line TRW03 Dimensions

1.76TYP

59.53 TYP

61.92

2.71(3) Plcs

56.50

20.50 TYP

24.28

54.56

2.000 TYP

29.76

4.50

9.38

14.38

26.42

52.40 54.38

54.88

7.98 12.64

2.90

TRW03 Dimensions

16


Back to Back TRS04NO. DESCRIPTION QTY.

1 Frame 1

2 Lifting Eyebolt 2

3 Rinnai Tankless Indoor or Outdoor Unit

4



6 Manifold, Gas 1

7 3/4” Dirt Leg 4

8 Unistrut 2

9 3/4 FNPT Brass Ball Valve - Gas 4 4

2

6

5

9

8

3

1

7

Back to Back TRS04 Specification

TRR04 Specifications

17

Back to Back TRS04 Dimensions

1.10 TYP 20.50

36.53

41.50

2.49 TYP

39.03

3.01 6.00 10.23

28.50

4.50 9.38

14.38

53.59 55.18

55.57

27.60

28.14

18.82

TRS04 Dimensions

18

Back to Back TRS06 Specification

Back to Back TRS06


1 Frame 1

2 Lifting Eyebolt 2

3 Rinnai Tankless Indoor or Outdoor Unit

6



6 Manifold, Gas 1

7 3/4” Dirt Leg 6

8 Unistrut 2

9 3/4 FNPT Brass Ball Valve - Gas

6

4

6

5

9

8

3

1

7

2


TRS06 Specifications

19

Back to Back TRS06 Dimensions

20.50 TYP

55.11 62.00

3.45 TYP 2.05

9.17 4.95

59.53

2.08 TYP 18.81

4.50 9.38

14.38

55.18 55.57

28.50

27.61

28.13

TRS06 Dimensions

20

Rack System Examples

21

In-Line Application

Back to Back Application


22



23


to side

to front

to top

to floor/ground

to side

to front

to top

to floor/ground

to Combustibles

inches (mm)

to Non-Combustibles

inches (mm)

Top of Heater 6 * (152) 2 *(51)

Back of Heater 0 (zero) 0 (zero)

Front of Heater

6 (152) 6 (152)

Sides of Heater

2 (51) 1/2 (13)

Ground/Bottom

12 (305) 12 (305)

Vent 0 (zero) 0 (zero)

to Combustibles

inches (mm)

to Non-Combustibles

inches (mm)

Top of Heater 12 (305) 2 (51)

Back of Heater 0 (zero) 0 (zero)

Front (panel) 24 (610) 0 (zero)

Front (exhaust)24 (610) 24 (610)

Sides of Heater6 (152) 1/8 (3.2)

Ground/Bottom12 (305) 2 (51)

Indoor models: RU98i Outdoor models: RU98e

Install the rack system per clearances shown below for the RU98i and RU98e water heaters

Clearances for Water Heaters

24

Manifold Design for 24 W/H’s2 ½”, 4” and 6” Water Manifolds/Connections

Piping Layout - 24 Units

25

Multiple rack systems MUST pipe in parallel as shown below. Piping systems in series will result in undersized water/gas lines.

Detailed Piping - 24 Units

26

Tankless Rack System Kit Components

Rack System Kit Components

27

Part No.* Rack type Rack P/N Configuration

TRW02iN 2-unit interior In-line rack, NG RW2

TRW02eN 2-unit exterior In-line rack, NG RW2

TRW02iP 2-unit interior In-line rack, LP RW2

TRW02eP 2-unit exterior In-line rack, LP RW2

TRW03iN 3-unit interior In-line rack, NG RW3

TRW03eN 3-unit exterior In-line rack, NG RW3

TRW03iP 3-unit interior In-line rack, LP RW3

TRW03eP 3-unit exterior In-line rack, LP RW3


28


TRS02iN 2-unit interior back to back rack, NG RS4

TRS02eN 2-unit exterior back to back rack, NG RS4

TRS02iP 2-unit interior back to back rack, LP RS4

TRS02eP 2-unit exterior back to back rack, LP RS4

TRS02iN-IL 2-unit INLINE interior back to back rack, NG RS4

TRS02eN-IL 2-unit INLINE exterior back to back rack, NG RS4

TRS02iP-IL 2-unit INLINE interior back to back rack, LP RS4

TRS02eP-IL 2-unit INLINE exterior back to back rack, LP RS4










29


TRS03iN-IL 3-unit INLINE interior back to back rack, NG RS6

TRS03eN-IL 3-unit INLINE exterior back to back rack, NG RS6

TRS03iP-IL 3-unit INLINE interior back to back, LP RS6

TRS03eP-IL 3-unit INLINE exterior back to back rack, LP RS6









Description(2) RU98

In-Line Mount(3) RU98

In-Line Mount

Top Level Part No. RW2 RW3

Rack Frame - Specifications RW2 RW3

Water Heater Model Number RU98i/eN/P RU98i/eN/P

Height - in 54.81 54.81

Length - in 41.50 62.00

Depth - in 12.75 12.75

Crate Dimensions (LxWxH) - in 62 x 55 x 36 62 x 75 x 36

Weight - Assembly w/o WHs - lbs 44.1 63.4

Weight - Water Heaters - lbs 131.4 197.1

Weight - Fully Assembled - lbs 175.5 260.5

Weight - Packaging - lbs 121.0 142.0

Weight - Shipping (total) - lbs 296.5 402.5

Material Detail List

Material Details

30

Description(4/4) RU98

Back to Back (3/4) RU98

Back to Back(2/4) RU98

Back to Back

Top Level Part No. RS4-4 RS4-3 RS4-2

Rack Frame - Specifications RF4 RF4 RF4

Water Heater Model Number RU98i/eN/P RU98i/eN/P RU98i/eN/P

Frame (HxLxD) - in 55.56 x 41.50 x 28.5

Crate Dimensions (HxLxD) - in 62 x 55 x 36

Weight - Assembly w/o WHs - lbs 96.1 88.1 80.1

Weight - Water Heaters - lbs 262.8 197.1 131.4

Weight - Fully Assembled - lbs 358.9 285.2 211.5

Weight - Packaging - lbs 129.0 129.0 129.0

Weight - Shipping (total) - lbs 487.9 414.2 340.5


Material Details

31


Description(6/6) RU98



Back to Back

Top Level Part No. RS6-6 RS6-5 RS6-3

Rack Frame - Specifications RF6 RF6 RF6

Water Heater Model Number RU98i/eN/P RU98i/eN/P RU98i/eN/P

Frame (HxLxD) – in 55.56 x 62.00 x 28.5

Crate Dimensions (LxWxH) - in 62x75x36

Weight - Assembly w/o WHs - lbs 124.6 116.6 100.6

Weight - Water Heaters - lbs 394.2 328.5 197.1

Weight - Fully Assembled - lbs 518.8 445.1 350.2

Weight - Packaging - lbs 148.0 148.0 148.0

Weight - Shipping (total) - lbs 666.8 593.1 498.2

Material Details

32

Description(2, 3) RU98

In-Line Mount(4/4, 3/4, or 2/4) RU98

Back to Back (b) (6/6, 5/6, 3/6) RU98Back to Back (b)

Top Level Part No. RW2, RW3 RS4-4, RS4-3, RS4-2 RS6-6, RS6-5, RS6-3

Rack Frame - Specifications RW2, RW3 RF4 RF6

Frame Rail Type Sheet Metal Sheet Metal Sheet Metal

Frame Material 0.090 5052-H32 0.090 5052-H32 0.090 5052-H32

Frame Finish Powder Coat Powder Coat Powder Coat

Color Gray Gray Gray

Water & Gas Connections

Hot Water Trunk Line Diameter 2" 2" 2-1/2"

Cold Water Trunk Line Diameter 2" 2" 2-1/2"

Hot Water Trunk Line Material Rigid Copper Rigid Copper Rigid Copper

Cold Water Trunk Line Material Rigid Copper Rigid Copper Rigid Copper

Water Trunk Connection Type 2" MNPT 2" MNPT 2-1/2" MNPT

Water Header End Cap (field supplied) 2” FNPT 2” FNPT 2-1/2” FNPT

Hot Water Branch Line Diameter 3/4" 3/4" 3/4"

Cold Water Branch Line Diameter 3/4" 3/4" 3/4"

Hot Water Branch Line Material CSST CSST CSST


Materials Details

33

Cold Water Branch Line Material CSST CSST CSST

Gas Trunk Line Diameter 1-1/4" NPT 1-1/4" NPT 1-1/2" NPT

Gas Trunk Connection Type 1-1/4” MNPT 1-1/4” MNPT 1-1/2” MNPT

Gas Header End Cap (field supplied) 1-1/4” FNPT 1-1/4” FNPT 1-1/2” FNPT

Gas Trunk Line Material Sch 40 Steel Sch 40 Steel Sch 40 Steel

Gas Branch Line Diameter 3/4" 3/4" 3/4"

Gas Branch Line Material PVC over CSST PVC over CSST PVC over CSST

Gas Trunk Line Finish Powder Coat Powder Coat Powder Coat

Uni-Strut Size 1-5/8" x 13/16" 1-5/8" x 1-5/8" 1-5/8" x 1-3/8"

Uni-Strut Material 14ga Steel / Zn 12ga S/S 12ga S/S

Hardware Material/Finish Steel / Zn S/S 18-8 S/S 18-8

Material Detail List continue from previous slide

Material Details

34

BTU and Flow Rates for Common Vented RU98i/e (NG/LP)

2 RU98 3 RU98 4 RU98 6 RU98

Flow rate @ 70°F temperature rise (gpm) 10.8 16.2 21.6 32.4

Flow rate @ 100°F temperature rise (gpm) 7.6 11.4 15.2 22.8

Maximum input rate (Btuh) 398,000 597,000 796,000 1,194,000

Electrical Requirements

(Installer shall provide electrical outlet connections) Each unit has a 10 amp fuse.

Maximum circuit for each RU98 unit without a built-in circulation pump is 4 amps.

Each water heater requires 120 VAC, 60 Hz. 4 amp power source in a properly grounded circuit.

RU98i: 64 W normal operation; 2 W standby; 146 W anti-frost

protection.

RU98e: 63 W normal operation; 2 W standby; 168 W anti-frost protection.

Electrical /BTU Input Ratings

Electrical/Flow Ratings

35

The End

Rinnai

Rack System Training

Version 02282014GW

Tankless Rack System By Rinnai

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