Rinnai Water Heater TRC02iP Installation Manual

Tankless Rack System Installaon Manual

Additional information can be obtained from the appliance manual.

Free Standing Rack

(6 water heaters)

WARNING

— Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any other

appliance.

— WHAT TO DO IF YOU SMELL GAS

 Do not try to light any appliance.
 Do not touch any electrical switch; do not use any phone in your building.
 Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instrucons.
 If you cannot reach your gas supplier, call the re department.

— Installaon and service must be performed by a licensed professional.

1 Rinnai Rack Installation

If the informaon in these instrucons is not followed exactly, a re or explosion
may result causing property damage, personal injury or death.

Notes

2 Rinnai Rack Installation

Table of Contents

Description ............................................................ 4

Venting Options ..................................................... 4

TRS Part Nos. and Main Components.................. 5

Specifications ................................................... 8-27

Clearances .......................................................... 28

Hoisting (Lifting Lugs) ......................................... 29

Securing Free Standing Racks ........................... 30

Securing Wall Mount Racks (ILW)……………….31

Securing Wall Hanging Racks (TRW)…………...32

Securing Wall Hanging Racks (TRC)…………….33

Relief Valve Piping .............................................. 34

Piping for Multiple Racks .................................... 34

Parallel Piping Drawing ....................................... 35

End Caps / Connections ..................................... 36

Condensate Drain ............................................... 37

Condensate Manifold .......................................... 37

Checklist for Plumbing ......................................... 38

Installation of Gas Supply .................................... 38

Connect Electricity ............................................... 39

Electrical (Pre-wired electrical assembly) ........... 40

TRW ST Series Dedicated Return Line
Plumbing Instructions……………………………...42

TRW ST Series Crossover Return
Conversion Instructions……………………………43

MSB Installation .................................................. 47

Final Checklist ..................................................... 49

TRW Replacement Parts ..................................... 50

TRC Replacement Parts…………………………..51

TRS Replacement Parts…………………………..52

Extended Limited Labor Warranty ....................... 54

Safety Symbols

This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and

others.

DANGER

WARNING

CAUTION

Installaon

A licensed professional must install the (TRS) Tankless Rack System

The installer should have skills such as

 connecng gas lines, water lines, valves, and electricity

 knowledge of applicable naonal, state, and local codes

If you lack these skills, contact a licensed professional.

Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in minor or
moderate injury. It may also be used to alert against unsafe practices.

3 Rinnai Rack Installation

Descripon

Rinnai Tankless Rack Systems (TRS) include wall mounted and free standing conguraons. The wall mounted
rack systems are available for 2 or 3 water heaters. Free standing rack systems are available for 2, 3, 4, 5, or 6
water heaters.

The TRS can be ordered with Rinnai’s Common Venng System, which consists of the CVent exhaust venng and
PP or PVC intake venng. Up to eight tankless units can share the same CVent system.

The Rinnai TRS features design details that make installaon simple and straighorward.

• Maneuverability: Fits, fully assembled, through standard 32-inch doorways and on elevators

• Flexibility: Available in both wall-mount or freestanding design for indoor and outdoor installaons.

• Preassembled Gas and water manifolds are properly sized to maintain opmum performance.

• The racks are constructed of powder-coated aluminum, powder coated steel, and stainless to stand up to the

most demanding commercial environments, while minimizing weight.

• Oponal electronic controls to obtain turn down raos of up to 327:1 (Sold Separately).

NOTE: The TRS is designed to be used with Rinnai tankless water heaters only. Do not mount non-Rinnai water
heaters on the TRS.

Venng Opons

Venng Opons

Common Venng System ** PPtl, PPs

Concentric PPs PVC 5" 1 65’ 45’

Twin Pipe PVC/CPVC PVC/CPVC

Dual Pipe* PPs PPs or PVC 3" 1 41' 41

*This venng is provided by Centrotherm through their own distribuon network

Exhaust Vent

Material

Intake Vent

Material

PVC, PPtl,
PPS

PVC/CPVC

Diameter

8" 8 100' (with 7 units) or 41’ (with 8 units)

4” 1 100’ 65’

3” 1 65’ 41’

Max.
Units

Max. Vent Length

Natural Gas Propane

• Refer to the water heater installaon and operaon manual for specic details regarding vent installaon

opon and installaon.

• Venng components are packaged separately from the pre-assembled Rack for eld assembly of the vent

system by the contractor.

**Only the C199i is cered for both direct vent and exhaust only with room air (exhaust must terminate

vercally in room air applicaon) when installed in a commercial common vent applicaon only. Reference
Rinnai Common Vent (CVent) Manual for further informaon.

4 Rinnai Rack Installation

TRS Part Nos. and Main Components

Tankless Rack WALL HANGING

Part No.* Rack type Configuration Illustration

TRW02iN 2-unit interior wall hanging rack, NG

TRW02eN 2-unit exterior wall hanging rack, NG

TRW02iP 2-unit interior wall hanging rack, LP

TRW02eP 2-unit exterior wall hanging rack, LP

TRW23iN 2-unit interior wall hanging rack, NG

TRW23eN 2-unit exterior wall hanging rack, NG

TRW23iP 2-unit interior wall hanging rack, LP

TRW23eP 2-unit exterior wall hanging rack, LP

TRW03iN 3-unit interior wall hanging rack, NG

TRW03eN 3-unit exterior wall hanging rack, NG

TRW03iP 3-unit interior wall hanging rack, LP

TRW03eP 3-unit exterior wall hanging rack, LP

Tankless Rack WALL HANGING SE SERIES

Part No.* Rack type Configuration Illustration

TRW02SEiN 2-unit interior wall hanging rack, NG RUC

TRW02SEeN 2-unit exterior wall hanging rack, NG RUC

TRW02SEiP 2-unit interior wall hanging rack, LP RUC

TRW02SEeP 2-unit exterior wall hanging rack, LP RUC

Tankless Rack WALL HANGING ST SERIES

Part No.* Rack type Configuration Illustration

TRW02STiN 2-unit interior wall mount rack, NG

TRW02STeN 2-unit exterior wall mount rack, NG

TRW02STiP 2-unit interior wall mount rack, LP

TRW02STeP 2-unit exterior wall mount rack, LP

TRW03STiN 2-unit interior wall mount rack, NG

TRW03STeN 2-unit exterior wall mount rack, NG

TRW03STiP 2-unit interior wall mount rack, LP

TRW03STeP 2-unit exterior wall mount rack, LP

Part no. system: TR = tankless rack; W = wall hanging;S = stand alone; IL = inline; ILW = Inline Wall Mount; 2/3/4/5/6 = no. of water

heaters; i/e = interior/exterior; NG/LP = fuel type

5 Rinnai Rack Installation

TRS Part Nos. and Main Components

Tankless Rack CORNER HANGING

Part No.* Rack type Configuration Illustration

TRC02iN 2-unit interior corner hanging rack, NG

TRC02iP 2-unit interior corner hanging rack, LP

Tankless Rack INLINE WALL MOUNT

Part No.* Rack type Configuration Illustration

TRS02ILWiN 2-unit interior wall mount rack, NG

TRS02ILWeN 2-unit exterior wall mount rack, NG

TRS02ILWiP 2-unit interior wall mount rack, LP

TRS02ILWeP 2-unit exterior wall mount rack, LP

TRS23ILWiN 2-unit interior wall mount rack, NG

TRS23ILWeN 2-unit exterior wall mount rack, NG

TRS23ILWiP 2-unit interior wall mount rack, LP

TRS23ILWeP 2-unit exterior wall mount rack, LP

TRS03ILWiN 3-unit interior wall mount rack, NG

TRS03ILWeN 3-unit exterior wall mount rack, NG

TRS03ILWiP 3-unit interior wall mount rack, LP

TRS03ILWeP 3-unit exterior wall mount rack, LP

Part no. system: TR = tankless rack; W = wall hanging;S = stand alone; IL = inline; ILW = Inline Wall Mount; 2/3/4/5/6 = no. of water

heaters; i/e = interior/exterior; NG/LP = fuel type

6 Rinnai Rack Installation

TRS Part Nos. and Main Components

Tankless Rack FREESTANDING

Part No.* Rack type Configuration Illustration

TRS02iN 2-unit interior free standing rack, NG

TRS02eN 2-unit exterior free standing rack, NG

TRS02iP 2-unit interior free standing rack, LP

TRS02eP 2-unit exterior free standing rack, LP

TRS02ILiN 2-unit INLINE interior free standing rack, NG

TRS02ILeN 2-unit INLINE exterior free standing rack, NG

TRS02ILiP 2-unit INLINE interior free standing rack, LP

TRS02ILeP 2-unit INLINE exterior free standing rack, LP

TRS23ILiN 2-unit INLINE interior free standing rack, NG

TRS23ILeN 2-unit INLINE exterior free standing rack, NG

TRS23ILiP 2-unit INLINE interior free standing rack, LP

TRS23ILeP 2-unit INLINE exterior free standing rack, LP

TRS03ILiN 3-unit INLINE interior free standing rack, NG

TRS03ILeN 3-unit INLINE exterior free standing rack, NG

TRS03ILiP 3-unit INLINE interior free standing rack, LP

TRS03ILeP 3-unit INLINE exterior free standing rack, LP

TRS03iN 3-unit interior free standing rack, NG

TRS03eN 3-unit exterior free standing rack, NG

TRS03iP 3-unit interior free standing rack, LP

TRS03eP 3-unit exterior free standing rack, LP

TRS36iN 3-unit interior free standing rack, NG

TRS36eN 3-unit exterior free standing rack, NG

TRS36iP 3-unit interior free standing rack, LP

TRS36eP 3-unit exterior free standing rack, LP

TRS04iN 4-unit interior free standing rack, NG

TRS04eN 4-unit exterior free standing rack, NG

TRS04iP 4-unit interior free standing rack, LP

TRS04eP 4-unit exterior free standing rack, LP

TRS46iN 4-unit interior free standing rack, NG

TRS46eN 4-unit exterior free standing rack, NG

TRS46iP 4-unit interior free standing rack, LP

TRS46eP 4-unit exterior free standing rack, LP

TRS05iN 5-unit interior free standing rack, NG

TRS05eN 5-unit exterior free standing rack, NG

TRS05iP 5-unit interior free standing rack, LP

TRS05eP 5-unit exterior free standing rack, LP

TRS06iN 6-unit interior free standing rack, NG

TRS06eN 6-unit exterior free standing rack, NG

TRS06iP 6-unit interior free standing rack, LP

TRS06eP 6-unit exterior free standing rack, LP

Part no. system: TR = tankless rack; W = wall hanging; S = stand alone; IL = inline; ILW = Inline Wall Mount; 2/3/4/5/6 = no. of water

heaters; i/e = interior/exterior; NG/LP = fuel type

Back
to
Back

7 Rinnai Rack Installation

Specicaons

2 UNIT WALL HANGING FRAME

12.88 HOT (2‖COPPER)

7.88 COLD (2‖COPPER)

3.00 GAS (1-1/4‖NPT)

LEFT

7.76

56.82

FRONT

44.00

20.50

5.92 TYP.

BACK

TRW02

Configuration Illustration Model

36.00

BOTTOM

8 Rinnai Rack Installation

Specicaons

2 UNIT WALL HANGING FRAME

Model

Water Heater Model C199i (NG/LP) C199e (NG/LP)

Crate Dimensions (HxLxD) - in 66 x 67 x 35

Weight - Fully Assembled - lbs 166 165

Weight - Shipping (total) - lbs 380 379

Rack Frame - Specifications

TRW02i TRW02e

Frame Material

Frame Finish Powder Coat Stainless

Color Gray Stainless

Water & Gas Connections

Hot Water Trunk Line Diameter 2"

Cold Water Trunk Line Diameter 2"

Hot Water Trunk Line Material Rigid Copper

Cold Water Trunk Line Material Rigid Copper

Water Trunk Connection Type 2" PIPE

Gas Trunk Line Diameter 1-1/4"

Gas Trunk Connection Type 1-1/4‖ MNPT

Gas Trunk Line Material Sch 40 Steel

Gas Branch Line Material PVC Over CSST

Electric Requirements

Voltage AC 120 Volts—60 Hz

Maximum Current (Amperes) 8

Number of Tankless Water Heaters 2

Flow rate @ 70°F rise (gpm) 10.8

Flow rate @ 100°F rise (gpm) 7.6

Minimum input rate (Btuh) 15,200

Maximum input rate (Btuh) 398,000

14 Gauge Hot Rolled Steel 1.5‖ Square

Tube 16 Gauge Stainless Steel 1.5‖ Square Tube

BTU and Flow Rates for C199i, C199e (NG/LP)

TRW02

9 Rinnai Rack Installation

Specicaons

3 UNIT WALL HANGING FRAME

12.88 HOT (2‖COPPER)

7.88 COLD (2‖COPPER)

3.00 GAS (1-1/4‖NPT)

LEFT

7.76

56.82

FRONT

62.00

41.00

5.92 TYP.

54.50

BACK

BOTTOM

Configuration Model Illustration

TRW03

TRW23

10 Rinnai Rack Installation

Specicaons

3 UNIT WALL HANGING FRAME

Model TRW03i TRW03e TRW23i TRW23e

Water Heater Model C199i (NG/LP) C199e (NG/LP) C199i (NG/LP) C199e (NG/LP)

Crate Dimensions (HxLxD) - in 66 x 67 x 35 66 x 67 x 35

Weight - Fully Assembled - lbs 244 240 182 179

Weight - Shipping (total) - lbs 458 454 396 393

Rack Frame - Specifications

14 Gauge Hot Rolled

Frame Material

Frame Finish

Color

Water & Gas Connections

Hot Water Trunk Line Diameter 2"

Cold Water Trunk Line Diameter 2"

Hot Water Trunk Line Material Rigid Copper

Cold Water Trunk Line Material Rigid Copper

Water Trunk Connection Type 2" PIPE

Gas Trunk Line Diameter 1-1/4"

Gas Trunk Connection Type 1-1/4‖ MNPT

Gas Trunk Line Material Sch 40 Steel

Gas Branch Line Material PVC Over CSST

Electric Requirements

Voltage AC 120 Volts—60 Hz

Maximum Current (Amperes) 12 8

Number of Tankless Water Heaters 3 2

Steel 1.5‖ Square

Tube

Powder Coat Stainless Powder Coat Stainless

Gray Stainless Gray Stainless

BTU and Flow Rates for C199i, C199e (NG/LP)

16 Gauge

Stainless Steel

1.5‖ Square Tube

14 Gauge Hot

Rolled Steel 1.5‖

Square Tube

16 Gauge

Stainless Steel

1.5‖ Square Tube

Flow rate @ 70°F rise (gpm) 16.2 10.8

Flow rate @ 100°F rise (gpm) 11.4 7.6

Minimum input rate (Btuh) 15,200 15,200

Maximum input rate (Btuh) 597,000 398,000

TRW03

11 Rinnai Rack Installation

TRW23

Specicaons

2 UNIT WALL HANGING FRAME SE SERIES

12.88 HOT (2‖COPPER)

7.88 COLD (2‖COPPER)

3.00 GAS (1-1/4‖NPT)

LEFT

7.76

56.82

FRONT

44.00

20.50

5.92 TYP.

BACK

TRW02SE

Configuration Illustration Model

36.00

BOTTOM

12 Rinnai Rack Installation

Specicaons

2 UNIT WALL HANGING FRAME SE SERIES

Model

Water Heater Model RUC98i (NG/LP) RU98e (NG/LP)

Crate Dimensions (HxLxD) - in 66 X 67 X 35

Weight - Fully Assembled - lbs 166 165

Weight - Shipping (total) - lbs 380 379

Rack Frame - Specifications

TRW02SEi TRW02SEe

Frame Material

Frame Finish Powder Coat Stainless

Color Gray Stainless

Water & Gas Connections

Hot Water Trunk Line Diameter 2"

Cold Water Trunk Line Diameter 2"

Hot Water Trunk Line Material Rigid Copper

Cold Water Trunk Line Material Rigid Copper

Water Trunk Connection Type 2" PIPE

Gas Trunk Line Diameter 1-1/4"

Gas Trunk Connection Type 1-1/4‖ MNPT

Gas Trunk Line Material Sch 40 Steel

Gas Branch Line Material PVC Over CSST

Electric Requirements

Voltage AC 120 Volts—60 Hz

Maximum Current (Amperes) 8

Number of Tankless Water Heaters 2

Flow rate @ 70°F rise (gpm) 10.8

Flow rate @ 100°F rise (gpm) 7.6

Minimum input rate (Btuh) 15,200

Maximum input rate (Btuh) 398,000

14 Gauge Hot Rolled Steel 1.5‖ Square

Tube 16 Gauge Stainless Steel 1.5‖ Square Tube

BTU and Flow Rates for RUC98i, RU98e (NG/LP)

TRW02

13 Rinnai Rack Installation

Specicaons

2 UNIT WALL HANGING FRAME ST SERIES WITH THERMACIRC 360

LEFT

FRONT

BACK

BOTTOM

Configuration Illustration Model

TRW02ST

14 Rinnai Rack Installation

Specicaons

2 UNIT WALL HANGING FRAME ST SERIES WITH THERMACIRC 360

Model

Water Heater Model RUR98i AND RUC98i (NG/LP) RUR98e AND RU98e (NG/LP)

Crate Dimensions (HxLxD) - in 66X67X35

Weight - Fully Assembled - lbs 174 173

Weight - Shipping (total) - lbs 388 387

Rack Frame - Specifications

TRW02STi TRW02STe

Frame Material

Frame Finish Powder Coat Stainless

Color Gray Stainless

Water & Gas Connections

Hot Water Trunk Line Diameter 2"

Cold Water Trunk Line Diameter 2"

Hot Water Trunk Line Material Rigid Copper

Cold Water Trunk Line Material Rigid Copper

Water Trunk Connection Type 2" PIPE

Gas Trunk Line Diameter 1-1/4"

Gas Trunk Connection Type 1-1/4‖ MNPT

Gas Trunk Line Material Sch 40 Steel

Gas Branch Line Material PVC Over CSST

Electric Requirements

Voltage AC 120 Volts—60 Hz

Maximum Current (Amperes) 8

BTU and Flow Rates for RUR98i, RUR98e, RUC98i, RU98e (NG/LP)

Number of Tankless Water Heaters 2

Flow rate @ 70°F rise (gpm) 10.8

Flow rate @ 100°F rise (gpm) 7.6

Minimum input rate (Btuh) 15,200

Maximum input rate (Btuh) 398,000

14 Gauge Hot Rolled Steel 1.5‖ Square

Tube 16 Gauge Stainless Steel 1.5‖ Square Tube

TRW02

15 Rinnai Rack Installation

Specicaons

3 UNIT WALL HANGING FRAME ST SERIES WITH THERMACIRC 360

LEFT

FRONT

BOTTOM

BACK

Configuration Model Illustration

TRW03ST

16 Rinnai Rack Installation

Specicaons

3 UNIT WALL HANGING FRAME ST SERIES WITH THERMACIRC 360

Model TRW03STi TRW03STe

Water Heater Model RUR98i AND RUC98i (NG/LP) RUR98e AND RU98e (NG/LP)

Crate Dimensions (HxLxD) - in 66 x 67 x 35

Weight - Fully Assembled - lbs 252 248

Weight - Shipping (total) - lbs 466 462

Rack Frame - Specifications

Frame Material

Frame Finish

Color

Water & Gas Connections

Hot Water Trunk Line Diameter 2"

Cold Water Trunk Line Diameter 2"

Hot Water Trunk Line Material Rigid Copper

Cold Water Trunk Line Material Rigid Copper

Water Trunk Connection Type 2" PIPE

Gas Trunk Line Diameter 1-1/4"

Gas Trunk Connection Type 1-1/4‖ MNPT

Gas Trunk Line Material Sch 40 Steel

Gas Branch Line Material PVC Over CSST

Electric Requirements

Voltage AC 120 Volts—60 Hz

Maximum Current (Amperes) 12

BTU and Flow Rates for RUR98i, RUR98e, RUC98i, RU98e (NG/LP)

Number of Tankless Water Heaters 3 2

14 Gauge Hot Rolled Steel 1.5‖ Square

Tube

Powder Coat Stainless

Gray Stainless

16 Gauge Stainless Steel 1.5‖ Square

Tube

Flow rate @ 70°F rise (gpm) 16.2 10.8

Flow rate @ 100°F rise (gpm) 11.4 7.6

Minimum input rate (Btuh) 15,200 15,200

Maximum input rate (Btuh) 597,000 398,000

TRW03

17 Rinnai Rack Installation