Product Overview
Product Overview
OLMO Multi-Sierra Indoor — 9,000 BTU, R454B — OS-RM09SW-230VI
Wall-mount indoor unit with Smart Connect, SEER2 up to 25, and quiet operation. Pairs with OLMO Multi-Sierra outdoor units.
9,000 BTU/h SEER2 up to 25 R454B Wi-Fi included 208–230V, 1Ph Quiet 39/37/35 dB(A)
Why pros choose this indoor
- Smart control: Wi-Fi Smart Connect for app control per room.
- Comfort features: Sleep, Turbo, Eco, multi-speed fan, timer, auto swing.
- High efficiency: SEER2 up to 25 with compatible Multi-Sierra ODU.
- Quiet: low indoor sound levels for bedrooms and offices.
At-a-glance
Model
OS-RM09SW-230VI
OS-RM09SW-230VI
Refrigerant
R454B (system)
R454B (system)
Controls
Remote + Wi-Fi app
Remote + Wi-Fi app
Sound
39/37/35 dB(A)
39/37/35 dB(A)
What’s included
- Indoor unit OS-RM09SW-230VI (9,000 BTU)
- Wi-Fi adapter (17310900A05963)
- Wireless remote control
- Installation & user manuals
- Manufacturer warranty
Installation kit with pre-flared copper, drain, and communication cable is optional and must be selected if needed.
Tech specs
| Spec | Details |
|---|---|
| Model | OS-RM09SW-230VI |
| Capacity (rated) | 9,000 BTU/h |
| SEER2 / EER2 (up to) | 25 / 13.65 |
| Refrigerant | R454B (with matching Multi-Sierra ODU) |
| Refrigerant piping (liq/gas) | 1/4″ / 3/8″ |
| Power | 208–230 V, 1-Phase, 60 Hz |
| Voltage range | 187–253 V |
| MCA / Max fuse | 3 A / 5 A |
| Indoor noise (H/M/L) | 39 / 37 / 35 dB(A) |
| Indoor airflow (H/M/L/Quiet) | 382 / 341 / 294 / 247 (per spec) |
| Unit dimensions (W×H×D) | 32 1/16 × 10 5/8 × 8 7/16 in |
| Packing dimensions (W×D×H) | 34 1/4 × 13 3/16 × 10 7/16 in |
| Net / Gross weight | 18.7 / 23.1 lb |
| Filter size (W×D×H) | 11 15/16 × 1/2 × 13 3/4 in |
| Drain connection | 3/4″ |
| Controller | L1-12 |
| Operating range (cool / heat) | 61–86 °F / 61–86 °F (per spec) |
Performance depends on the matched Multi-Sierra outdoor unit and system design.
Performance features
- Remote control included
- Smart Connect app control
- Sleep, Turbo, and Eco modes
- Multiple fan speeds and timer
- Auto-swing louvers
- Self-clean mode
- LED display
Documents
Warranty
- 5-year compressor limited warranty
- 2-year parts limited warranty (licensed HVAC install and registration within 60 days)
- 1-year remote control
Important
Installed by a licensed HVAC professional. Registration within 60 days. Select an installation kit if needed: pre-flared copper, drain hose, communication cable, wrapping bands.
FAQs
Does this include Wi-Fi?
Yes. Smart Connect Wi-Fi adapter is included.
Which outdoor units is it compatible with?
All OLMO Multi-Sierra outdoor units sized for 9,000 BTU zones and using R454B.
What line sizes are required?
1/4″ liquid and 3/8″ gas when paired per Multi-Sierra specifications.
How quiet is it?
Indoor sound is 39/37/35 dB(A) on H/M/L.

