OLMO SIERRA — Multi-Zone Heat Pump System

Olmo Sierra 2-Zone Ductless Mini Split AC & Heat Pump 18000 BTU (12K+12K), Wall Mount Units, 230V - R410A

The OLMO Sierra Multi-Zone can be used in multiple combinations with Olmo Multi-Sierra wall mounted units in up to
2 independent zone(s). Featuring inverter technology, this heat pump offers up to
21 SEER2 ratings for efficient cooling and heating. With Smart Connect included,
you can independently control comfort from anywhere using the app. A remote control is also included with features such as
Sleep, Turbo, and Eco modes, multiple fan speeds, timer functions, and auto swing louvers.

Multi-Zone
Wall Mounted Indoor Units
2 Zone(s)
Up to 21 SEER2
18000 BTU Outdoor
Refrigerant: R410A
Outdoor SKU OS-MSR18-230VO
Smart Connect Included




Contact for custom quotes
Call 800-543-8933

Features

• Remote Control Included


• Smart Connect from anywhere (app control)


• Comfortable Sleep Mode


• Turbo and Eco Modes


• Multiple Fan Speeds


• Timer


• Louver Auto Swing


• Self Clean Mode


• LED Display

Features can vary by matched indoor unit model/configuration.

At-a-glance

Zoning2 room(s)

Outdoor BTU18000

SEER221

RefrigerantR410A

Outdoor SKUOS-MSR18-230VO

ControlApp + Remote

Video

Optional overview video.

What’s included

Outdoor Unit: 18000 BTU (1 pc) — Model: OS-MSR18-230VO
Indoor Units:

- 12,000 BTU (x2) — Model: OS-M12SRW-230VI

• Installation Kits options (No Installation / 16 ft / 25 ft / 50 ft)


• (INSTALLATION KIT SIZE MUST BE SELECTED, TO INCLUDE)


• Wireless remote controls (2 remote(s))


• Smart Connect module (if included with this configuration)


• 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-M12SRW-230VI

Refrigerant piping Liquid/Gas side (inch)	1/4-3/8
Voltage range (V)	187-253
Packing dimensions (WxDxH)	39.38x13.19x6.38
BTU Rated	12,000
Unit Net/Gross weight	19.84/24.25
Unit dimensions (W*H*D)	37.38x10.75x8.13
Power source	208-230V, 1Ph, 60Hz
Indoor Noise Level H/M/L	39/35/30

Manuals

• https://api.olmo-comfort.com/storage/342/Multi-SIERRA-IDU-User-and-Installation-Manual.pdf


• https://api.olmo-comfort.com/storage/344/Multi-SIERRA-Remote-control-manual.pdf


• https://api.olmo-comfort.com/storage/426/SIERRA-WiFi-Manual.pdf


• https://api.olmo-comfort.com/storage/405/Olmo-MultiSierra-Leaflet-2024.pdf


• https://api.olmo-comfort.com/storage/380/OLMO-Catalog-2024.pdf

Technical specifications — Outdoor

Outdoor Unit Specifications — OS-MSR18-230VO

Voltage range (V)	198~253
System type	Multi-zone unit
SEER2 up to	21
Refrigerant type	R410A
Refrigerant piping Liquid/Gas side (inch)	1/4\"/3/8\"
Packing dimensions (WxDxH)	39x17-3/4x28-3/4
Max. pipe length (ft)	82/164
HSPF2-5	8.53
HSPF2-4	10.34
EER2 up to	12.5
Unit Net/Gross weight	116.8/125.6
Unit dimensions (W*H*D)	33-7/8x26-3/8x12-1/4
Refrigerant precharge	25
Power source	208-230V, 1Ph, 60Hz
Outdoor Noise Level	55
Outdoor Air Flow	1.85
Minimum circuit ampacity	21
Max.fuse	30
Max height difference between Indoor and Outdoor unit	15
Heating Capacity at 47°F	18,000
COP	3.45
Cooling Capacity (nominal)	18,000
Ambient temperature - Heating	-13~75.2
Ambient temperature - Cooling	14~114.8
Additional Refrigerant Charge 3/8 liquid line	0.16
Additional Refrigerant Charge 1/4 liquid line	0.16

Manuals

• https://api.olmo-comfort.com/storage/343/Multi-SIERRA-ODU-User-and-Installation-Manual.pdf


• https://api.olmo-comfort.com/storage/405/Olmo-MultiSierra-Leaflet-2024.pdf


• https://api.olmo-comfort.com/storage/374/Submittal-OS-MSR18-230VO-OLMO-Multi-Zone-Outdoor-Submittal.pdf


• https://api.olmo-comfort.com/storage/380/OLMO-Catalog-2024.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.

Full description