Rheem Furnace Minimum clearance to combustibles
Rheem Furnace Minimum clearance to combustibles: reference table for the furnace (Rheem 90RJ/90TJ 90 Plus series): a quick-reference table with notes.
Rheem Furnace Minimum clearance to combustibles table
| Configuration | Left side | Right side | Back | Top | Front | Vent |
|---|---|---|---|---|---|---|
| Upflow | 0 in. | 0 in. | 0 in. | 1 in. | 2 in. (24 in. service) | 0 in. |
| Downflow | 0 in. | 0 in. | 0 in. | 1 in. | 2 in. (24 in. service) | 0 in. |
| Horizontal | 0 in. | 0 in. | 0 in. | 1 in. | 2 in. (24 in. service) | 0 in. |
How to use the Rheem Furnace Minimum clearance to combustibles table
Find your exact model in the first column and read across the row. Values in the Rheem Furnace Minimum clearance to combustibles 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
- Same values for every cabinet size.
- 24 in. service clearance recommended in front of all furnaces.
- Not approved for installation on its back (doors facing up).
Applies to: 90RJ (upflow) and 90TJ (downflow/horizontal) 90 Plus condensing furnaces, 45,000-120,000 BTU/h
Rheem models this applies to
90RJ0490RJ0690RJ0790RJ0990RJ1090RJ1290TJ0490TJ0690TJ0790TJ0990TJ1090TJ12
Source: Rheem 90RJ/90TJ installation instructions 92-24161-32-08, Figures 5-7 Clearance to Combustibles, PDF p.9-11. 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.