Table of Contents
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Tankless Rack System Installation Manual
Additional information can be obtained from the appliance manual.
WARNING
— Do not store or use gasoline or other flammable 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 instructions.
If you cannot reach your gas supplier, call the fire department.
— Installation and service must be performed by a licensed professional.
Free Standing Rack
If the information in these instructions is not followed exactly, a fire or explosion
may result causing property damage, personal injury or death.
(6 water heaters)
1
Rinnai Rack Installation
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Table of Contents
Related Manuals for Rinnai TRW02i
Summary of Contents for Rinnai TRW02i
- Page 1 Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. If you cannot reach your gas supplier, call the fire department. — Installation and service must be performed by a licensed professional. Rinnai Rack Installation...
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Page 2: Table Of Contents
A licensed professional must install the (TRS) Tankless Rack System. The installer should have skills such as: Connecting gas lines, water lines, valves, and electricity Knowledge of applicable national, state, and local codes If you lack these skills, contact a licensed professional. Rinnai Rack Installation... -
Page 3: Description
• Optional electronic controls to obtain turn down ratios 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. Venting Options Max. -
Page 4: Trs Part Nos. And Main Components
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 Rinnai Rack Installation... - Page 5 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 Rinnai Rack Installation...
- Page 6 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 Rinnai Rack Installation...
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Page 7: Specifications
Specifications 2 UNIT WALL HANGING FRAME LEFT FRONT BACK 44.00 20.50 7.76 5.92 TYP. 56.82 12.88 HOT (2‖COPPER) 7.88 COLD (2‖COPPER) 3.00 GAS (1-1/4‖NPT) 36.00 BOTTOM Model Configuration Illustration TRW02 Rinnai Rack Installation... - Page 8 BTU and Flow Rates for C199i, C199e (NG/LP) Number of Tankless Water Heaters Flow rate @ 70°F rise (gpm) 10.8 Flow rate @ 100°F rise (gpm) Minimum input rate (Btuh) 15,200 Maximum input rate (Btuh) 398,000 TRW02 Rinnai Rack Installation...
- Page 9 Specifications 3 UNIT WALL HANGING FRAME FRONT LEFT BACK 62.00 41.00 5.92 TYP. 7.76 56.82 12.88 HOT (2‖COPPER) 7.88 COLD (2‖COPPER) 3.00 GAS (1-1/4‖NPT) 54.50 BOTTOM Model Configuration Illustration TRW03 TRW23 Rinnai Rack Installation...
- Page 10 BTU and Flow Rates for C199i, C199e (NG/LP) Number of Tankless Water Heaters Flow rate @ 70°F rise (gpm) 16.2 10.8 Flow rate @ 100°F rise (gpm) 11.4 Minimum input rate (Btuh) 15,200 15,200 Maximum input rate (Btuh) 597,000 398,000 TRW03 TRW23 Rinnai Rack Installation...
- Page 11 Specifications 2 UNIT WALL HANGING FRAME SE SERIES LEFT FRONT BACK 44.00 20.50 7.76 5.92 TYP. 56.82 12.88 HOT (2‖COPPER) 7.88 COLD (2‖COPPER) 3.00 GAS (1-1/4‖NPT) 36.00 BOTTOM Model Configuration Illustration TRW02SE Rinnai Rack Installation...
- Page 12 BTU and Flow Rates for RUC98i, RU98e (NG/LP) Number of Tankless Water Heaters Flow rate @ 70°F rise (gpm) 10.8 Flow rate @ 100°F rise (gpm) Minimum input rate (Btuh) 15,200 Maximum input rate (Btuh) 398,000 TRW02 Rinnai Rack Installation...
- Page 13 Specifications 2 UNIT WALL HANGING FRAME SE + WITH PUMP LEFT FRONT BACK BOTTOM Model Configuration Illustration TRW02ST Rinnai Rack Installation...
- Page 14 BTU and Flow Rates for RUR98i, RUR98e, RUC98i, RU98e (NG/LP) Number of Tankless Water Heaters Flow rate @ 70°F rise (gpm) 10.8 Flow rate @ 100°F rise (gpm) Minimum input rate (Btuh) 15,200 Maximum input rate (Btuh) 398,000 TRW02 Rinnai Rack Installation...
- Page 15 Specifications 3 UNIT WALL HANGING FRAME SE + WITH PUMP FRONT LEFT BACK BOTTOM Model Configuration Illustration TRW03ST Rinnai Rack Installation...
- Page 16 BTU and Flow Rates for RUR98i, RUR98e, RUC98i, RU98e (NG/LP) Number of Tankless Water Heaters 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 Rinnai Rack Installation...
- Page 17 Specifications 2 UNIT WALL HANGING FRAME HE SERIES FRONT LEFT BACK BOTTOM Models Configuration Illustration • TRW02HE • TRW02HEX Rinnai Rack Installation...
- Page 18 BTU and Flow Rates for RL94i, RLX94i, RL94e (NG/LP) Number of Tankless Water Heaters Flow rate @ 70°F rise (gpm) Flow rate @ 100°F rise (gpm) Minimum input rate (Btuh) 10,300 10,300 10,300 Maximum input rate (Btuh) 398,000 384,000 398,000 TRW02HE / TRW02HEX Rinnai Rack Installation...
- Page 19 Specifications 3 UNIT WALL HANGING FRAME HE SERIES FRONT LEFT BACK BOTTOM Models Configuration Illustration • TRW03HE • TRW03HEX Rinnai Rack Installation...
- Page 20 BTU and Flow Rates for RL94i, RLX94i, RL94e (NG/LP) Number of Tankless Water Heaters Flow rate @ 70°F rise (gpm) 13.5 Flow rate @ 100°F rise (gpm) Minimum input rate (Btuh) 10,300 10,300 10,300 Maximum input rate (Btuh) 597,000 576,000 597,000 TRW03HE / TRW03HEX Rinnai Rack Installation...
- Page 21 Specifications 2 UNIT CORNER HANGING FRAME FRONT Model Configuration Illustration TRC02 Rinnai Rack Installation...
- Page 22 Maximum Current (Amperes) BTU and Flow Rates for C199i, (NG/LP) Number of Tankless Water Heaters Flow rate @ 70°F rise (gpm) 10.8 Flow rate @ 100°F rise (gpm) Minimum input rate (Btuh) 15,200 Maximum input rate (Btuh) 398,000 Rinnai Rack Installation...
- Page 23 Specifications 2 UNIT WALL MOUNT FRAME LEFT BACK FRONT 44.00 13.14 20.50 5.92 1.00 57.69 27.44 2.00 4.50 GAS (1-1/4‖NPT) 38.53 9.38 COLD (2‖COPPER) 34.53 14.38 HOT (2‖COPPER) 16.78 18.00 BOTTOM Model Configuration Illustration TRW02 Rinnai Rack Installation...
- Page 24 BTU and Flow Rates for C199i, C199e (NG/LP) Number of Tankless Water Heaters Flow rate @ 70°F rise (gpm) 10.8 Flow rate @ 100°F rise (gpm) Minimum input rate (Btuh) 15,200 Maximum input rate (Btuh) 398,000 TRS02ILW Rinnai Rack Installation...
- Page 25 Specifications 3 UNIT WALL MOUNT FRAME LEFT FRONT BACK 62.00 41.00 13.17 5.92 1.00 57.69 27.44 4.50 GAS (1-1/4‖NPT) 2.00 9.38 COLD (2‖COPPER) 57.13 14.38 HOT (2‖COPPER) 53.13 16.79 18.01 BOTTOM Model Configuration Illustration TRS03ILW TRS23ILW Rinnai Rack Installation...
- Page 26 BTU and Flow Rates for C199i, C199e (NG/LP) Number of Tankless Water Heaters Flow rate @ 70°F rise (gpm) 16.2 10.8 Flow rate @ 100°F rise (gpm) 11.4 Minimum input rate (Btuh) 15,200 15,200 Maximum input rate (Btuh) 597,000 398,000 TRS03ILW TRS23ILW Rinnai Rack Installation...
- Page 27 4 UNIT FREE STANDING FRAME LEFT FRONT 44.00 20.50 18.81 5.92 56.82 BOTTOM 4.50 GAS (1-1/4‖NPT) 9.38 COLD (2‖COPPER) 34.53 14.38 HOT (2‖COPPER) 26.29 28.59 Model Configuration Illustration TRS04 TRS03 Inline (facing TRS02IL same direction) Back TRS02 Back Rinnai Rack Installation...
- Page 28 Number of Tankless Water Heaters Flow rate @ 70°F rise (gpm) 21.6 16.2 10.8 Flow rate @ 100°F rise (gpm) 15.2 11.4 Minimum input rate (Btuh) 15,200 Maximum input rate (Btuh) 796,000 597,000 398,000 TRS02IL TRS04 TRS03 TRS02 Rinnai Rack Installation...
- Page 29 6 UNIT FREE STANDING FRAME LEFT FRONT 62.00 41.01 18.81 5.92 57.69 4.50 GAS (1-1/4‖NPT) BOTTOM 9.38 COLD (2‖COPPER) 14.38 HOT (2‖COPPER) 53.13 26.29 28.59 Model Configuration Illustration Model Configuration Illustration TRS06 TRS06 TRS46 TRS05 TRS23IL TRS03IL Rinnai Rack Installation...
- Page 30 Flow rate @ 70°F rise (gpm) 32.4 27.0 16.2 21.6 10.8 Flow rate @ 100°F rise (gpm) 22.8 19.0 11.4 15.1 Minimum input rate (Btuh) 15,200 Maximum input rate (Btuh) 1,194,000 995,000 597,000 796,000 398,000 TRS03IL TRS46 TRS23IL TRS06 TRS36 TRS05 Rinnai Rack Installation...
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Page 31: Clearances
The clearance for servicing is 24 inches in front of the drain line. water heater. The clearance for servicing is 24 inches in front of the water heater. For closet installation, clearance is 6 inches (152 mm from the front. Rinnai Rack Installation... -
Page 32: Hoisting (Lifting Lugs)
For the TRW02 and TRW03 wall hanging racks, use hoisting straps looped around the top frame. Weights of the complete assemblies are available in the Specifications section of this manual. NOTE: DO NOT hoist the crate or palette. Hoisting Straps TRW03 TRW02 TRW023 TRW02SE TRW02ST TRW03ST TRW03ST TRW02HE/ TRW03HE/ TRW02HEX TRW03HEX Rinnai Rack Installation... -
Page 33: Securing Free Standing Racks
TRS04 TRS36 TRS46 TRS23IL TRS03IL TRS05 TRS06 28.50 26.50 26.29 28.50 26.50 26.29 55.11 Bottom view of 53.09 free standing 36.53 racks. 34.51 (Flex line illustrations have been removed for clarity) 0.563 (4) Plcs 0.563 (4) Plcs Rinnai Rack Installation... -
Page 34: Securing Wall Mount Racks (Ilw)
Using the holes in the wall bracket, Securely attach the rack to the wall. Ensure that the attachment strength is sufficient. • Reference local codes regarding minimum concrete thickness and use appropriate expansion anchors that is capable supporting the TRS weight . TRS23ILW TRS03ILW TRS02ILW (Brackets are located on both sides of rack) Rinnai Rack Installation... -
Page 35: Securing Wall Hanging Racks (Trw)
2. Lift the wall hanging rack , and insert the top of the frame into the bracket. 3. Secure the front of the bracket to the front of the wall hanging frame with a #12 X 3/4 drill point screw. Rinnai Rack Installation... -
Page 36: Securing Wall Hanging Racks (Trc)
2. Lift the corner hanging rack , and insert the top of the frame into the two brackets. 3. Secure the frame to the hanging brackets using two, 12-14 Thread, 2-1/2” long, drill point screws (Supplied). Fastener head is 5/16” hex. Rinnai Rack Installation... -
Page 37: Relief Valve Piping
Relief Valve Piping Each Rinnai Tankless Water Heater on the TRS comes installed with Isolation valves and a pressure relief valve. Refer to the Installation and Operation Manual for more information on proper piping for the relief valve drain. Pressure Relief... -
Page 38: Parallel Piping Drawing
Rinnai Rack Installation... -
Page 39: End Caps / Connections
Once flow direction and gas supply side is determined the other (opposite) side of the manifold must be capped. See the example below. Leak check the capped ends of the manifolds. HOT OUT COLD IN GAS IN Rinnai Rack Installation... -
Page 40: Condensate Drain
Condensate Manifold Condensate Drain Condensate Manifolds are installed above the water Each Rinnai tankless water heater has a condensate manifolds of the following racks for single point drain outlet on the bottom of the unit. A drain line condensate connection. -
Page 41: Checklist For Plumbing
Check for proper water pressure to the water Before placing the appliance in operation, all joints heater. Minimum water pressure is 50 psi. Rinnai including the heater must be checked for gas recommends 60-80 psi for maximum tightness by means of leak detector solution, soap performance. -
Page 42: Connect Electricity
The wiring diagram is located on the Technical Sheet attached to the inside of the front cover. 120V Wiring Blue or Black wire: hot leg Brown or White Wire: neutral Rinnai Rack Installation... -
Page 43: Electrical (Pre-Wired Electrical Assembly)
(Green). WARNING 6. Reinstall front panel to gang box using 2 screws. Shut off building supply power prior to connecting to TRS electrical assembly. Failure to do so may result in property damage, bodily harm, or death. Rinnai Rack Installation... - Page 44 7. Once the building electrical power supply has been wired to the rack system, plug the indoor units into the outlet located under the center rack frame as shown below. IMPORTANT: The outlet is designed for use with Rinnai Tankless Water Heaters only. Do not insert power cords belonging to other appliances or electrical sources into the outlet.
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Page 45: Trw St Series Dedicated Return Plumbing Instructions
RUR98 RUC98 RUC98 Dedicated return line connection 3/4‖ FNPT Unscrew the square head threaded plug to connect the building dedicated recircu- lation return line. WARNING: Make sure the water supply is off and the system is depressurized. Rinnai Rack Installation... -
Page 46: Trw St Series Crossover Return Conversion Instructions
PVA valve and threaded nipple to the second RUC unit. For conversion to crossover recirculation, follow the steps below. 1. Remove the cold flex assembly from the RUR98 unit. RUR98 RUC98 RUC98 Cold flex assembly Rinnai Rack Installation... - Page 47 3. Remove the cold flex assembly from an RUC98 unit. RUR98 RUC98 RUC98 Cold flex assembly 4. Install the flex line assembly with the PVA from step 2 onto the RUC98 unit. RUR98 RUC98 RUC98 Flex line assembly with PVA Rinnai Rack Installation...
- Page 48 IMPORTANT: When conversion steps are complete, the water heater recirculation settings must be adjusted. Refer to the ―Cross Over Mode‖ section in the ―Rinnai Direct Vent Tankless Water Heater with Integrated Pump Installation and Operation Manual‖ (shipped with KBP water heater models) for detailed instructions (Installation Instructions ►...
- Page 49 When conversion steps are complete, the water heater recirculation settings must be adjusted. Refer to the ―Cross Over Mode‖ section in the ―Rinnai Direct Vent Tankless Water Heater with Integrated Pump Installation and Operation Manual‖ (shipped with KBP water heater models) for detailed instructions (Installation Instructions ►...
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Page 50: Msb Installation
MSB-C3 cables for V Series) C1 MSB-C1 cable (9.8 feet) for connecting water heaters within a banked system (up to 5), (use MSB-C3 cables for V Series) C2 MSB-C2 cable (26.2 feet) for connecting MSB-M control boards (up to 5) Rinnai Rack Installation... - Page 51 6. Set the No 5 switch on the fourth MSB board to ON. The LED light 6 should turn ON confirming the connection. Set No 3 and No 5 switches on the on the fifth MSB board to ON. The LED light 6 should turn ON confirming the connection. Rinnai Rack Installation...
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Page 52: Final Checklist
□ Check the gas lines and connections for leaks. □ Confirm that the gas inlet pressure is within limits. □ Confirm that the water heater is rated for the gas type supplied. Rinnai Rack Installation... -
Page 53: Trw Replacement Parts
11 Manifold, Water - 3WM TRW02 / TRW02SE / TRW02ST 12 Manifold, Gas - 2WM 13 Manifold, Water - 2WM TRW02ST / TRW03ST 14 Relocation Adapter 15 PVA Valve 16 Threaded Nipple 17 Check Valve 6/7/8/9 10/12 11/13 6/7/8/9 10/12 11/13 Rinnai Rack Installation... -
Page 54: Trw He Replacement Parts
Cold Water Flex Line Cush Clamp 1.625ID Cush Clamp 1.66ID TRW03HE / TRW03HEX Manifold, Gas - TRW03HE Manifold, Water - TRW03HE TRW02HE / TRW02HEX 10 Manifold, Gas - TRW02HE 11 Manifold, Water - TRW02HE 9,11 8,10 8/10 9/11 Rinnai Rack Installation... -
Page 55: Trc Replacement Parts
TRC REPLACEMENT PARTS TRC02 Description REF. # Dirt Leg Gas Flex Line Assembly Gas Valve 18‖ Flex Line 21‖ Flex Line Hot Water Manifold Cold Water Manifold Gas Manifold Cush Clamp 1.66ID Cush Clamp 1.625ID 9/10 Rinnai Rack Installation... -
Page 56: Trs Replacement Parts
Manifold, Water - 4B2B 7/8/9/10/11 TRS03IL/TRS03ILW/TRS23 Manifold, Gas - 3WM Manifold, Water - 3WM TRS02IL/TRS02ILW Manifold, Gas - 2WM Manifold, Water - 2WM TRS03/TRS03ILW/TRS03IL/ TRS04/TRS36/TRS46 Electrical - 4 Connections TRS05/TRS06 Electrical - 6 Connections 7/8/9/10/11 14/16/18/20 22/23 15/17/19/21 Rinnai Rack Installation... - Page 57 RACK DESCRIPTION TRS03IL/ILW 3 Connections - In-Line TRS03 3 Connections - 3B2B TRS04 4 Connections - 4B2B TRS05 5 Connections - 5B2B TRS06 6 Connections - 6B2B TRS36 3 Connections - 3B2B TRS46 4 Connections - 4B2B Rinnai Rack Installation...
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Page 58: Extended Limited Labor Warranty
Rinnai will replace the product with a comparable product at Rinnai’s discretion. The warranty claim for product parts and labor may be denied if a component or product returned to Rinnai is found to be free of defects in material or workmanship;... - Page 59 Rinnai shall not be liable for indirect, incidental, special, consequential or other similar damages that may arise, including lost profits, damage to person or property, loss of use, inconvenience, or liability arising from improper installation, service or use.
- Page 60 A tradition of true reliability. For nearly 100 years, we at Rinnai have been fiercely committed to delivering nothing less than a superior experience at every touch point. Beyond manufacturing the highest quality products, our people stand behind all that we make—before, during and long after installation.