Rinnai Clearances and closet return opening
Rinnai Clearances and closet return opening: reference table for the air handler (Air handler series): a quick-reference table with notes.
Rinnai Clearances and closet return opening table
| Item | Requirement |
|---|---|
| Unit casing (top, sides, back, front, bottom) | 0 in. to combustibles |
| Plenum and duct | 0 in. for first 36 in. (914 mm) and rest of ductwork |
| Service | 24 in. (610 mm) in front |
| Closet louvered return, minimum open area | 360 sq in. (0.23 sq m) for CAH050E and CAH050CE |
How to use the Rinnai Clearances and closet return opening table
Find your exact model in the first column and read across the row. Values in the Rinnai Clearances and closet return opening 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
- If louver free area is unknown assume 25% for wood and 75% for metal louvers or grilles.
- Air filters (not supplied) must be listed Class 2 furnace filters.
Applies to: CAH050E, CAH050CE hydronic air handlers
Rinnai Air Handler error codes →
Source: Rinnai Canadian Air Handler Installation and Operation Manual (600000023), Non-Ducted Return Closet Installation p.16. 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.