3 Zone (3 Heads) OLMO Sierra Multi-Zone 42,000 BTU, 3.5 TON, R410A, Tri Zone 12K + 12K + 12K BTU Wall Mount Ductless Mini Split Air Conditioner and Heater, Inverter with Heat Pump, 230V, Optional 16ft, 25ft or 50ft Installation Kits
Summary
The OLMO Sierra Multi-Zone can be used in multiple combinations with Olmo Multi-Sierra Wall Mounted Units in up to 4 independent zones. Featuring inverter technology, this heat pump offers up to 20 SEER2 ratings, delivering efficient cooling and heating capabilities. With Smart Connect included, you can independently control this unit from anywhere using the APP for added comfort and convenience. A remote control is also included, offering features such as Sleep, Turbo, and Eco modes, Multiple Fan Speeds, Timer, and Auto Swing Louvers.
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 that you have selected the desired installation kit above. This kit comes with Pre-Flared 99% Copper Lines, Data Communication Wires, PVC Drainage Attachment, Wrapping Bands, etc.
What's Included
- 3X Indoor Units OS-M12SRW-230VI (12,000 BTU OLMO Sierra Indoor Wall Mount Unit)
- Outdoor Unit OS-MSR42-230VO (42,000 BTU OLMO Sierra Outdoor Condenser Unit)
- Optional, Pre-Flared 99% Copper Installation Kit (16ft, 25ft or 50ft.) MUST BE SELECTED ABOVE.
- Wireless Remote Controls
- Installation Manual
- User’s Manual
- Manufacturer Warranty
Other OLMO 42,000 BTU Combinations
| 3 Zones | 4 Zones | 5 Zones |
| 9 + 9 + 12 | 9 + 9 + 9 + 9 | 9 + 9 + 9 + 9 + 9 |
| 9 + 9 + 18 | 9 + 9 + 9 + 12 |
9 + 9 + 9 + 9 + 12
|
| 9 + 9 + 24 | 9 + 9 + 9 + 18 |
9 + 9 + 9 + 9 + 18
|
| 9 + 12 + 12 | 9 + 9 + 9 + 24 |
9 + 9 + 9 + 9 + 24
|
| 9 + 12 + 18 | 9 + 9 + 12 + 12 |
9 + 9 + 9 + 12 + 12
|
| 9 + 12 + 24 | 9 + 9 + 12 + 18 |
9 + 9 + 9 + 12 + 18
|
| 9 + 18 + 18 | 9 + 9 + 12 + 24 |
9 + 9 + 9 + 12 + 24
|
| 9 + 18 + 24 | 9 + 9 + 18 + 18 |
9 + 9 + 9 + 18 + 18
|
| 9 + 24 + 24 | 9 + 9 + 18 + 24 |
9 + 9 + 12 + 12 + 12
|
| 12 + 12 + 12 | 9 + 12 + 12 + 12 |
9 + 9 + 12 + 12 + 18
|
| 12 + 18 + 18 | 9 + 12 + 12 + 18 |
9 + 12 + 12 + 12 + 12
|
| 12 + 18 + 24 | 9 + 12 + 12 + 24 |
9 + 12 + 12 + 12 + 18
|
| 12 + 24 + 24 | 9 + 12 + 18 + 18 |
12 + 12 + 12 + 12 + 12
|
| 18 + 18 + 18 | 9 + 12 + 18 + 24 | |
| 18 + 18 + 24 | 9 + 18 + 18 + 18 | |
|
12 + 12 + 12 + 12
|
||
|
12 + 12 + 12 + 18
|
||
|
12 + 12 + 12 + 24
|
||
|
12 + 12 + 18 + 18
|
Warranty
- 5 year compressor limited warranty
- 2 year parts limited warranty (must be installed by a licensed HVAC technician)
- 1 year remote control
Technical Information
Model Number: OS-M12SRW-230VI (12,000 BTU Indoor Wall Mount)
| Specification | Details |
| Refrigerant Piping Liquid/Gas Side (inch) | 1/4, 3/8 |
| Packing Dimensions (WxDxH) |
39.38 x 13.19 x 6.38
|
| Controller | L1-12 |
| BTU Rated | 12,000 |
| Unit Net/Gross Weight | 19.84 / 24.25 |
| Unit Dimensions (WxHxD) |
37.38 x 10.75 x 8.13
|
| Power Source |
208-230V, 1Ph, 60Hz
|
| Indoor Noise Level H/M/L | 39 / 35 / 30 |
Model Number: OS-MSR42-230VO (42,000 BTU Indoor Wall Mount)
| Specification | Value |
| Voltage Range (V) | 198~253 |
| SEER2 (up to) | 20 |
| Refrigerant Type | R410A |
| Packing Dimensions (WxDxH) |
43-3/4 x 18-1/8 x 47-1/4
|
| EER2 (up to) | 10.5 |
| Unit Net/Gross Weight (lbs) | 198.4 / 224.5 |
| Unit Dimensions (WHD) |
37-3/8 x 41-3/8 x 13-3/8
|
| Power Source |
208-230V, 1Ph, 60Hz
|
| Outdoor Noise Level (dB) | 63 |
| Minimum Circuit Ampacity (A) | 35 |
| Max Fuse (A) | 50 |
| Heating Capacity at 47°F (BTU) | 42,000 |
| COP | 3.17 |
| Cooling Capacity (nominal) (BTU) | 42,000 |
Certifications![]()
Performance Data/Features
• Remote Control Included
• Smart Connect from Anywhere
• Comfortable Sleep Mode
• Turbo and Eco Modes
• Multiple Fan Speeds
• Timer
• Louver Auto Swing
• Self Clean Mode
• LED Display