Olmo Sierra 2-Zone Ductless Mini Split AC & Heat Pump 27000 BTU (9K+18K), Wall Mount Units, 230V
The OLMO Sierra Multi-Zone system can be configured with Olmo Multi-Sierra wall mounted units in up to 2 independent zone(s). Inverter technology delivers efficient cooling and heating with SEER2 ratings up to 23. Smart Connect app control and wireless remote(s) included.
Performance features
- Smart Connect app control from anywhere
- Wireless remote control(s) included
- Comfortable Sleep mode
- Turbo and Eco modes
- Multiple fan speeds
- Auto swing louvers
- 24-hour timer
- Self Clean mode
- LED display
Features may vary slightly by matched indoor unit models/configuration.
At-a-glance
2 room(s)
27000
23
OS-RMS27-230VO
Video
Optional overview video.
What’s included
Outdoor Unit: 27000 BTU (1 pc) — Model: OS-RMS27-230VO
Indoor Units:
- 9,000 BTU (x1) — Model: OS-RM09SW-230VI
- 18,000 BTU (x1) — Model: OS-RM18SW-230VI
- Optional pre-flared 99% copper installation kit (16ft, 25ft, or 50ft)
- (INSTALLATION KIT SIZE MUST BE SELECTED ABOVE)
- Wireless remote controls (2 remote(s))
- Installation manual
- User’s manual
- Manufacturer warranty
If you choose a “NO INSTALLATION KIT” option, the order will not include copper line sets or communication wire, which are required for installation.
Technical specifications — Indoor
Indoor Unit Specifications — OS-RM09SW-230VI
| Voltage range (V) | 187-253 |
|---|---|
| SEER2 up to | 25 |
| Refrigerant type | R454B |
| Refrigerant piping Liquid/Gas side (inch) | 1/4"/3/8" |
| Packing dimensions (WxDxH) | 34 1/4x13 3/16x10 7/16 |
| Filter dimensions (WxDxH) (inch) | 11 15/16 × 1/2 ×13 3/4 |
| EER2 up to | 13.65 |
| Dehumidification (Pnt/H) | 1.6 |
| Controller | L1-12 |
| BTU Rated | 9,000 |
| Unit Net/Gross weight | 18.7/23.1 |
| Unit dimensions (W*H*D) | 32 1/16x10 5/8x8 7/16 |
| Power source | 208-230V, 1Ph, 60Hz |
| Operation Range - Heating | 61℉-86℉ |
| Operation Range - Cooling | 61℉-86℉ |
| Minimum circuit ampacity | 3 |
| Max.fuse | 5 |
| Indoor Noise Level H/M/L | 39/37/35 |
| Indoor Air Flow | 382/341/294/247 |
| ESP Range | / |
| Drainage water pipe diameter | 3/4" |
Indoor Unit Specifications — OS-RM18SW-230VI
| Voltage range (V) | 187-253 |
|---|---|
| SEER2 up to | 21 |
| Refrigerant type | R454B |
| Refrigerant piping Liquid/Gas side (inch) | 1/4"/1/2" |
| Packing dimensions (WxDxH) | 46 1/16x15 3/8x12 7/16 |
| Filter dimensions (WxDxH) (inch) | 16 1/8 × 9/16 ×15 1/8 |
| EER2 up to | 12.95 |
| Dehumidification (Pnt/H) | 2.6 |
| Controller | L1-12 |
| BTU Rated | 18,000 |
| Unit Net/Gross weight | 30.9/37.5 |
| Unit dimensions (W*H*D) | 42 3/4x12 3/8x9 5/16 |
| Power source | 208-230V, 1Ph, 60Hz |
| Operation Range - Heating | 61℉-86℉ |
| Operation Range - Cooling | 61℉-86℉ |
| Minimum circuit ampacity | 3 |
| Max.fuse | 5 |
| Indoor Noise Level H/M/L | 45/41/39 |
| Indoor Air Flow | 647/588/482/382 |
| ESP Range | / |
| Drainage water pipe diameter | 3/4" |
Manuals
- https://api.olmo-comfort.com/storage/428/Olmo-R32-R454B-Leaflet.pdf
- https://api.olmo-comfort.com/storage/429/OLMO-Multi-SIERRA-WiFi-Manual-R32.pdf
- https://api.olmo-comfort.com/storage/430/OLMO-Multi-Sierra-IDU_R454B-Installation-Manual-R454B.pdf
- https://api.olmo-comfort.com/storage/431/OLMO-Sierra-Multi-Zone-ODU-user-manual-R454B.pdf
- https://api.olmo-comfort.com/storage/432/OLMO-SIERRA-Remote-control-manual.pdf
Technical specifications — Outdoor
Outdoor Unit Specifications — OS-RMS27-230VO
| Model | OS-RMS27-230VO |
|---|---|
| Voltage range (V) | 187-253 |
| Power source | 208-230V, 1Ph, 60Hz |
| Cooling capacity (Btu/h) | 27000 |
| EER2 | 12.85 |
| SEER2 | 23.0 |
| Heating capacity (Btu/h) | 27000 |
| HSPF2 | 10.0 |
| COP2 (W/W) | 3.60 |
| Minimum circuit ampacity (A) | 25 |
| Max fuse (A) | 40 |
| Outdoor air flow (Hi) CFM | 3357 |
| Outdoor noise level dB(A) | 62 |
| Unit dimensions (W×H×D in) | 38-3/8 × 32-7/8 × 14-1/8 |
| Packing dimensions (W×H×D in) | 43-3/4 × 37-3/4 × 18-1/8 |
| Unit Net/Gross weight (lbs) | 160.6 / 183.2 |
| Refrigerant type/charge (oz) | R454B / 76.2 |
| Refrigerant piping (Liquid/Gas) | 1/4'' / 3/8'' |
| Max refrigerant pipe length (Each/Total ft) | 82 / 230 |
| Operating temp (Cooling °F) | 5 ~ 125 |
| Operating temp (Heating °F) | -13 ~ 75 |
Manuals
- https://api.olmo-comfort.com/storage/428/Olmo-R32-R454B-Leaflet.pdf
- https://api.olmo-comfort.com/storage/429/OLMO-Multi-SIERRA-WiFi-Manual-R32.pdf
- https://api.olmo-comfort.com/storage/430/OLMO-Multi-Sierra-IDU_R454B-Installation-Manual-R454B.pdf
- https://api.olmo-comfort.com/storage/431/OLMO-Sierra-Multi-Zone-ODU-user-manual-R454B.pdf
- https://api.olmo-comfort.com/storage/432/OLMO-SIERRA-Remote-control-manual.pdf
Warranty information
- 5-Year Compressor Warranty
- 2-Year Parts Warranty (must be installed by a licensed HVAC technician)
- 1-Year Remote Control Warranty
Warranty is valid only when installed by a licensed HVAC professional and registered within 60 days of installation.
Important
All units must be installed by a licensed HVAC professional for the warranty to be valid. Registration is required within 60 days of installation and can be completed online or by phone. The installation kit is necessary for the system to function. Ensure you’ve selected the desired installation kit above.
This kit includes pre-flared 99% copper line sets, data communication wires, PVC drainage attachment, wrapping bands, and related accessories.
Full description
Expand
The OLMO Sierra Multi-Zone system is designed for flexible comfort across multiple rooms using up to 2 independent zones. With inverter-driven performance, it delivers efficient heating and cooling with SEER2 ratings up to 23.
Smart Connect provides convenient control from anywhere using the app, and the included remote(s) add quick access to everyday comfort features like Sleep, Turbo, and Eco modes, multiple fan speeds, timer functions, and auto swing louvers.
Configure the system with compatible Olmo Multi-Sierra wall mounted indoor units to match your rooms and capacity needs.
