Rinnai Tankless Rack System Owner's Manual
Tankless Rack System (TRS) Installaon 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 instrucons.
If you cannot reach your gas supplier, call the re department.
— Installaon and service must be performed by a licensed professional.
1 Rinnai Rack Installation
If the informaon in these instrucons 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 ................................................... 6-13
Clearances .......................................................... 14
Hoisting ............................................................... 15
Securing Racks .............................................. 16-17
Relief Valve Piping .............................................. 18
Piping for Multiple Racks ..................................... 18
Parallel Piping Drawing ....................................... 19
End caps / Connections ....................................... 20
Condensate Drain ................................................ 21
Checklist for Plumbing ......................................... 21
Installation of Gas Supply .................................... 22
Connecting Electricity .......................................... 22
MSB Installation ............................................. 23-24
Final Checklist ..................................................... 25
Replacement Parts .............................................. 26
Extended Limited Labor Warranty ................. 27-28
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
Installaon
A licensed professional must install the (TRS) Tankless Rack System
The installer should have skills such as
connecng gas lines, water lines, valves, and electricity
knowledge of applicable naonal, 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
Descripon
Rinnai Tankless Rack Systems (TRS) include wall mounted and free standing conguraons. The wall mounted
rack systems are available for 2, 3, or 4 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 Venng System, which consists of the CVent exhaust venng and
PP or PVC intake venng. Up to eight tankless units can share the same CVent system.
The Rinnai TRS features design details that make installaon simple and straighorward.
• 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 installaons.
• Preassembled Gas and water manifolds are properly sized to maintain opmum performance.
• The racks are constructed of powder-coated aluminum, to stand up to the most demanding commercial
environments, while minimizing weight.
• Oponal electronic controls to obtain turn down raos 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.
Venng Opons
Venng Opons
Common Venng System PPtl (CVent) PVC or PPtl 8" 8 100' (with 7 units) or 41’ (with 8 units)
Concentric PPs PVC 5" 1 65’ 45’
Twin Pipe PVC/CPVC PVC/CPVC
Dual Pipe* PPs PPs or PVC 3" 1 41' 41
* This venng is provided by Centrotherm through their own distribuon network
Exhaust Vent
Material
Intake Vent
Material
PVC/CPVC
Diameter
4” 1 100’ 65’
3” 1 65’ 41’
Max.
Units
Max. Vent Length
Natural Gas Propane
• Refer to the water heater installaon and operaon manual for specic details regarding vent installaon
opon and installaon.
• Venng components are packaged separately from the pre-assembled Rack for eld assembly of the vent
system by the contractor.
4 Rinnai Rack Installation
TRS Part Nos. and Main Components
Part No.* Rack type Configuration Illustration
TRW02iN 2-unit interior wall mount rack, NG
TRW02eN 2-unit exterior wall mount rack, NG
TRW02iP 2-unit interior wall mount rack, LP
TRW02eP 2-unit exterior wall mount rack, LP
TRW03iN 3-unit interior wall mount rack, NG
TRW03eN 3-unit exterior wall mount rack, NG
TRW03iP 3-unit interior wall mount rack, LP
TRW03eP 3-unit exterior wall mount rack, LP
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
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
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
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
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
Back
to
Back
Inline
(facing
same
direction)
Part no. system: TR = tankless rack; W = wall mount; S = stand alone; IL = inline; 2/3/4/5/6 = no. of water heaters;
i/e = interior/exterior; NG/LP = fuel type
5 Rinnai Rack Installation
Specicaons
2 UNIT WALL MOUNT FRAME
LEFT
FRONT
BACK
BOTTOM
Configuration Illustration Model
TRW02
6 Rinnai Rack Installation
Specicaons
2 UNIT WALL MOUNT FRAME
Model
Water Heater Model
Crate Dimensions (HxLxD) - in 62 x 55 x 36
Weight - Fully Assembled - lbs 204
Weight - Shipping (total) - lbs 400
Rack Frame - Specifications
Frame Rail Type
Frame Material Aluminum (0.090 5052-H32)
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) 8
RUC98i, RU98e (NG/LP)
TRW02
Sheet Metal
Powder Coat
Gray
BTU and Flow Rates for RUC98i, RU98e (NG/LP)
QTY. 2, RUC98i, RU98e (NG/LP)
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
TRW02
7 Rinnai Rack Installation
Specicaons
3 UNIT WALL MOUNT FRAME
LEFT
FRONT
BACK
TRW03
BOTTOM
Configuration Model Illustration
8 Rinnai Rack Installation
Specicaons
3 UNIT WALL MOUNT FRAME
Model TRW03
Water Heater Model RUC98i, RU98e (NG/LP)
Crate Dimensions (HxLxD) - in 62 x 75 x 36
Weight - Fully Assembled - lbs 291
Weight - Shipping (total) - lbs 487
Rack Frame - Specifications
Frame Rail Type
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 RUC98i, RU98e (NG/LP)
Aluminum (0.090 5052-H32)
QTY. 3, RUC98i, RU98e (NG/LP)
Sheet Metal
Powder Coat
Gray
Flow rate @ 70°F rise (gpm) 16.2
Flow rate @ 100°F rise (gpm) 11.4
Minimum input rate (Btuh) 15,200
Maximum input rate (Btuh) 597,000
TRW03
9 Rinnai Rack Installation
Specicaons
4 UNIT FREE STANDING FRAME
FRONT
RIGHT
BOTTOM
Configuration Illustration Model
TRS04
TRS03
Inline
TRS02IL
TRS02
10 Rinnai Rack Installation
(facing
same
direction)
Back
to
Back
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