Rinnai Tankless RUCS/RUS unit clearances
Rinnai Tankless RUCS/RUS unit clearances: reference table for the tankless water heater (Non-SENSEI series): a quick-reference table with notes.
Rinnai Tankless RUCS/RUS unit clearances table
| Location | RUCS indoor to combustibles | RUCS indoor to non-combustibles | RUS outdoor to combustibles | RUS outdoor to non-combustibles |
|---|---|---|---|---|
| Top | 6 in. (152 mm) * | 2 in. (51 mm) * | 12 in. (305 mm) | 2 in. (51 mm) |
| Back | 0 in. | 0 in. | 0 in. | 0 in. |
| Front | 6 in. (152 mm) | 6 in. (152 mm) | - | - |
| Front (panel) | - | - | 24 in. (610 mm) | 0 in. |
| Front (exhaust) | - | - | 24 in. (610 mm) | 24 in. (610 mm) |
| Sides | 2 in. (51 mm) | 1/2 in. (13 mm) | 6 in. (152 mm) | 1/8 in. (3.2 mm) |
| Ground/bottom | 12 in. (305 mm) | 12 in. (305 mm) | 12 in. (305 mm) | 2 in. (51 mm) |
| Vent | 0 in. | 0 in. | - | - |
How to use the Rinnai Tankless RUCS/RUS unit clearances table
Find your exact model in the first column and read across the row. Values in the Rinnai Tankless RUCS/RUS unit clearances table are a summary for quick reference; the rating plate on the unit and the manufacturer's manual for your model always decide. If your model is not listed, or a value looks different from what you see on the unit, check the manual before changing anything.
Notes
- 0 in. from vent components and condensate drain line.
- Service clearance 24 in. in front of the heater; closet installs need 6 in. (152 mm) in front.
- RUCS models are indoor only and RUS models are outdoor only.
Applies to: RUCS65i, RUCS75i (indoor); RUS65e, RUS75e (outdoor)
Rinnai models this applies to
C199eC199iR50LSiR63LSe2R75LSeR75LSiR94LSeR94LSiR98LSeR98LSe-ASMER98LSiR98LSi-ASMERC80eRC80iRC98eRC98iRE140eRE140iRE160eRE160iRE180eRE180iRE199eRE199iREP160eREP160iREP199eREP199iRL75eRL75e(A)RL75iRL75i(A)RL94eRL94iRLX94iRU80eRU80iRU90eRU98eRU98iRUC80iRUC90iRUC98iRUCS65iRUCS75iRUR98eRUR98iRUS65eRUS75eV53DeV53eV65eV65iV75eV75iV94eV94iV94Xi
Rinnai Tankless Water Heater error codes →
Source: Rinnai KCM Series (RUCS/RUS) Installation and Operation Manual (U328-0700X04(00)), Unit clearances, p.10. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.