RUCS75iN RUCS Model Series
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Enjoy an endless supply of hot water with the RUCS75iN, our Super-High Efficiency condensing natural gas tankless water heater from Rinnail. Only the size of a small suitcase, the RUCS75iN is compact, easy-to-install and perfect for indoor locations.
- Uniform Energy Factor (UEF): 0.9
- Warranty
- 10,300 BTU (minimum)
160,000 BTU (maximum) - Indoor
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Up to twice the lifespan of most tanks
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Never run out of hot water
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Compact size to fit every space
Specifications
| Manufacturer Trade Model Number - U.S. | RUCS75iN |
|---|---|
| Product Depth | 10.1 in / (257 mm) |
| Product Height | 31.1 in / (789.6 mm) |
| Product Width | 18.5 in / (470 mm) |
| Product Weight | 57.3 lb / (26 kg) |
| Gas Type | Natural Gas |
| Installation Type | Indoor |
| Residential ENERGY STAR® | Yes |
| Uniform Energy Factor (UEF) | 0.9 |
| Domestic Hot Water Flow Rate (Maximum) | 7.5 GPM / (28.4 l/min) |
| SCAQMD Approved | Ultra Low NOx |
Documentation
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AHRICertificate-RUCS75iPDF 222 KB
Manufacturer's_Certification_Statement_-_Rinnai_2015-2016.pdfPDF 327 KB -
Single Unit Standoff Bracket Installation Instructions EnglishPDF 919 KB
Air Handler Switch Installation Instructions - RU/RUR/RE/CUPDF 3 MB
Single Unit Standoff Bracket Installation Instructions EnglishPDF 919 KB -
Energy Guide - RUCS75iNPDF 893 KB -
Installation Manual: KCM Series Tankless Water Heater - RUS/RUCSPDF 7 MB -
Water_Heating_Solutions_Consumer_Brochure.pdfPDF 26 MB
Water_Heating_Solutions_Trade_Brochure.pdfPDF 33 MB
Ground water temperature map updatePDF 316 KB
Condensing Group Water Temperature Guide US and CanadaPDF 1 MB -
Supplemental Spec Sheet: Pipe Cover for Condensing Tankless Water Heaters- White (PN# PCD07-EW)PDF 374 KB
RUCS75i (KCM2528FFU-US) Specification Sheet EnglishPDF 361 KB
Condensing Tankless Water HeaterPDF 597 KB
UBBINK Vent Spec Sheet - RU/CU/RURPDF 667 KB -
Tech Bulletin No 115: Condensing Water Heater Combustion Air Intake Pipe Material (TB-115)PDF 230 KB
Tech Bulletin No 117: IPEX Concentric Vent Termination (TB-117)PDF 311 KB
Tech Bulletin No 121: Activation Flow Rates at Higher Temperatures (TB-121)PDF 308 KB
Tech Bulletin No 122: New Condensing Tankless Venting Options (TB-122)PDF 263 KB
Tech Bulletin No 130: Battery Backup for Tankless Water Heaters and Home Heating Products (TB-130)PDF 285 KB
Tech Bulletin No 150: Understanding EF and UEF (TB-150)PDF 197 KB
Tech Bulletin No 165: New Clearances for Twin Pipe Venting Systems (TB-165)PDF 308 KB
Tech Bulletin No 167: Control-R Not Compatible with RUCS-RUS KCM Water Heaters (TB-167)PDF 360 KB
Tech Bulletin No 172: Rinnai Natural Gas-Hydrogen Fuel Mixture Products (TB-172)PDF 279 KB
MSDS Higher Vinegar Concentration for Descaling Technical BulletinsPDF 417 KB -
TWH Troubleshooting Technical Data SheetPDF 2 MB
Troubleshooting TWH Diagnostic Codes-FrenchPDF 2 MB
Troubleshooting TWH Diagnostic Codes-SpanishPDF 2 MB
U328-0710(00)-RUCS75i RUCS65i RUS75e RUS65e KCM Tech Sheet.pdfPDF 779 KB -
System Design Drawing: Rinnai Tankless Single Unit with Backup Storage (CAD format)DWG 320 KB
System Design Drawing: Rinnai Tankless Single Unit with Backup StoragePDF 803 KBSystem Design Drawing: Rinnai Tankless Single Unit with Demand Pump Circulation (CAD format)DWG 337 KB
System Design Drawing: Rinnai Tankless Single Unit with Demand Pump CirculationPDF 789 KBSystem Design Drawing: Rinnai Tankless Single Unit with Circulation (CAD format)DWG 403 KB
System Design Drawing: Rinnai Tankless Single Unit with CirculationPDF 718 KBSystem Design Drawing: Rinnai Tankless Two Unit with Backup Storage (CAD format)DWG 432 KB
System Design Drawing: Rinnai Tankless Two Unit with Backup StoragePDF 818 KBSystem Design Drawing: Rinnai Tankless Two Unit with Demand Pump Circulation (CAD format)DWG 689 KB
System Design Drawing: Rinnai Tankless Two Unit with Demand Pump CirculationPDF 723 KBSystem Design Drawing: Rinnai Tankless Two Unit with Circulation (CAD format)DWG 688 KB
System Design Drawing: Rinnai Tankless Two Unit with CirculationPDF 725 KBSystem Design Drawing: Rinnai Tankless Three Unit with Backup Storage (CAD format)DWG 544 KB
System Design Drawing: Rinnai Tankless Three Unit with Backup StoragePDF 833 KBSystem Design Drawing: Rinnai Tankless Three Unit with Demand Pump Circulation (CAD format)DWG 0 MB
System Design Drawing: Rinnai Tankless Three Unit with Demand Pump CirculationPDF 732 KBSystem Design Drawing: Rinnai Tankless Three Unit with Circulation (CAD format)DWG 902 KB
System Design Drawing: Rinnai Tankless Three Unit with CirculationPDF 733 KBSystem Design Drawing: Rinnai Tankless Single Unit with Air Handler (CAD format)DWG 435 KB
System Design Drawing: Rinnai Tankless Single Unit with Air HandlerPDF 719 KBSystem Design Drawing: Rinnai Tankless Single Unit with Hydronic Heating via Plate Heat Exchanger (CAD format)DWG 419 KB
System Design Drawing: Rinnai Tankless Single Unit with Hydronic Heating via Plate Heat ExchangerPDF 718 KBSystem Design Drawing: Rinnai Tankless Single Unit with Solar Backup Option 1 (CAD format)DWG 427 KB
System Design Drawing: Rinnai Tankless Single Unit with Solar Backup Option 1PDF 727 KBSystem Design Drawing: Rinnai Tankless Single Unit with Solar Backup Option 2 (CAD format)DWG 447 KB
System Design Drawing: Rinnai Tankless Single Unit with Solar Backup Option 2PDF 725 KBSystem Design Drawing: Rinnai Tankless Single Unit with Hydronic Heating (CAD format)DWG 423 KB
System Design Drawing: Rinnai Tankless Single Unit with Hydronic HeatingPDF 720 KBSystem Design Drawing: Rinnai Tankless Two Unit with Solar Backup Option 1 (CAD format)DWG 766 KB
System Design Drawing: Rinnai Tankless Two Unit with Solar Backup Option 1PDF 736 KBSystem Design Drawing: Rinnai Tankless Two Unit with Solar Backup Option 2 (CAD format)DWG 748 KB
System Design Drawing: Rinnai Tankless Two Unit with Solar Backup Option 2PDF 732 KBSystem Design Drawing: Rinnai Tankless Three Unit with Solar Backup Option 1 (CAD format)DWG 1 MB
System Design Drawing: Rinnai Tankless Three Unit with Solar Backup Option 1PDF 741 KBSystem Design Drawing: Rinnai Tankless Three Unit with Solar Backup Option 2 (CAD format)DWG 1 MB
System Design Drawing: Rinnai Tankless Three Unit with Solar Backup Option 2PDF 742 KB -
Warranty KCM (SE Series)PDF 339 KB
iWarranty information is available in the Installation & Owner Manual.
