Indoor Unit Features
- 12-hour timer
- Auto restart
- Econo Cool: Temporarily and automatically adjusts airflow based on heat exchanger temperature, increasing the set temperature slightly to save energy while maintaining comfort.
- Electrostatic Enzyme Filter: Charged with static electricity to attract and filter airborne non-living particulates.
- Four fan speed options: Low, Medium, High, Super-high.
- Multiple control options: Back-lit screen hand-held Remote Controller (provided), comfort app, third-party interfaces, and both wired and wireless controllers.
- Nano Platinum Filter: Features a large capture area with nanometer-sized platinum-ceramic particles to reduce certain nonliving particles and deodorize circulating air.
- Smart Dry Mode: Improves humidity control with minimal over-cooling.
Outdoor Unit Features
- Blue Fin Coating: Anti-corrosion treatment on aluminum fins of the heat exchanger to protect against salt, sulfur, and other airborne contaminants, especially in coastal and industrial areas.
- INVERTER-driven compressor: Generates precise capacity needed to maintain a temperature set point.
- Powered by Outdoor Unit: The outdoor unit powers the indoor unit and automatically restarts after a power outage.
Specifications
Cooling at 95°F
| Parameter | Unit | Value |
| Maximum Capacity | Btu/h | 18,000 |
| Rated Capacity | Btu/h | 17,200 |
| Minimum Capacity | Btu/h | 5,800 |
| Maximum Power Input | W | 2,170 |
| Rated Power Input | W | 1,810 |
| Moisture Removal | Pints/h | 5.2 |
| Sensible Heat Factor | - | 0.67 |
| Power Factor [208V/230V] | % | 98/98 |
Heating at 47°F
| Parameter | Unit | Value |
| Maximum Capacity | Btu/h | 20,800 |
| Rated Capacity | Btu/h | 18,000 |
| Minimum Capacity | Btu/h | 5,400 |
| Maximum Power Input | W | 2,600 |
| Rated Power Input | W | 1,680 |
| Power Factor [208V/230V] | % | 97/97 |
Heating at 17°F
| Parameter | Unit | Value |
| Maximum Capacity | Btu/h | 15,000 |
| Rated Capacity | Btu/h | 11,700 |
| Maximum Power Input | W | 2,510 |
| Rated Power Input | W | 1,360 |
Efficiency
| Parameter | Unit | Value |
| SEER2 | 18 | |
| EER2 | 9.5 | |
| HSPF2 [IV] | 8.5 | |
| COP at 47°F | 3.14 | |
| COP at 17°F at Maximum Capacity | 1.74 | |
| ENERGY STAR® Certified | No |
Electrical
| Parameter | Unit | Value |
| Voltage, Phase, Frequency | V AC / V AC, Ø, Hz | 208 / 230, 1, 60 |
| Guaranteed Voltage Range | V AC | 187 - 253 |
| Voltage: Indoor - Outdoor, S1-S2 | V AC | 230 |
| Voltage: Indoor - Outdoor, S2-S3 | V DC | 24 |
| Short-circuit Current Rating [SCCR] | kA | 5 |
| Recommended Fuse/Breaker Size (Outdoor) | A | 20 |
| Recommended Wire Size [Indoor - Outdoor] | AWG | 14 |
| MCA | A | 1 |
| Fan Motor Output | W | 30 |
Indoor Unit Specifications
| Parameter | Unit | Value |
| Airflow Rate at Cooling, Dry | CFM | 277, 341, 411, 473 |
| Airflow Rate at Cooling, Wet | CFM | 249, 307, 370, 426 |
| Airflow Rate at Heating, Dry | CFM | 253, 311, 376, 453 |
| Sound Pressure Level [Cooling] | dB (A) | 32, 38, 44, 49 |
| Sound Pressure Level [Heating] | dB (A) | 31, 36, 41, 46 |
| Drain Pipe Size O.D. | inch [mm] | 5/8 [15.88] |
| Dual Barrier Coating on Heat Exchanger | No | |
| External Finish Color | Munsell 0.7PB 9.2/0.4 | |
| Unit Dimensions (W x D x H) | inch x inch x inch [mm x mm x mm] | 33 x 9 x 11-1/16 [838 x 228 x 280] |
| Package Dimensions (W x D x H) | inch x inch x inch [mm x mm x mm] | 35-1/2 x 13-1/4 x 11-1/4 [900 x 340 x 290] |
| Unit Weight | lbs [kg] | 20 [9] |
| Package Weight | lbs [kg] | 23 [10.40] |
| Fan Motor Type | DC Motor | |
| IDU Operating Temp. Range | °FDB, °FWB / °FDB, °FWB | 90, 73 / 67, 57 |
| Heating Intake Air Temp [Maximum / Minimum] | °FDB | 80 / 70 |
| NOTES: 1Cooling at 95°F (Indoor: 80°F DB, 67°F WB // Outdoor: 95°F DB, 75°F WB) 2Heating at 47°F (Indoor: 70°F DB, 60°F WB // Outdoor: 47°F DB, 43°F WB) 3Heating at 17°F (Indoor: 70°F DB, 60°F WB // Outdoor: 17°F DB, 15°F WB) * Indoor/Outdoor Unit Operating Temperature Range (Cooling Air Temp [Maximum / Minimum]): • Applications should be restricted to comfort cooling only; equipment cooling applications are not recommended for low ambient temperature conditions. ** Outdoor Unit Operating Temperature Range (Cooling Thermal Lock-out / Re-start Temperatures; Heating Thermal Lock-out / Re-start Temperatures): • System cuts out in heating mode and automatically restarts at these temperatures. | ||
Outdoor Unit Specifications
| Parameter | Unit | Value | |
| MCA | A | 16 | |
| MOCP | A | 28 | |
| Fan Motor Full Load Amperage | A | 0.71 | |
| Fan Motor Output | W | 55 | |
| Airflow Rate Cooling | CFM | 1,166 | |
| Airflow Rate Heating | CFM | 1,152 | |
| Defrost Method | Reverse Cycle | ||
| Coating on Heat Exchanger (Bluefin, Sea Coast) | Yes, Yes | ||
| Sound Pressure Level, Cooling¹ | dB (A) | 53 | |
| Sound Pressure Level, Heating² | dB (A) | 51 | |
| Compressor Type | Twin Rotary | ||
| Compressor Model | SRB140FQHMC | ||
| Compressor Oil [Type // Charge] | Type // oz | RM68EH // 11.83 | |
| External Finish Color | Munsell 3Y 7.8/1.1 | ||
| Base Pan Heater | Optional | ||
| Unit Dimensions (W x D x H) | inch x inch x inch [mm x mm x mm] | 31-1/2 x 11-1/4 x 21-5/8 [800 x 285 x 550] | |
| Package Dimensions (W x D x H) | inch x inch x inch [mm x mm x mm] | 35-1/2 x 13-1/4 x 11-1/4 [900 x 340 x 290] | |
| Unit Weight | lbs [kg] | 20 [9] | |
| Package Weight | lbs [kg] | 23 [10.40] | |
| Cooling Intake Air Temp [Maximum / Minimum*] | °FDB | 115 / 32 | |
| ODU Operating Temp. Range | Cooling Thermal Lock-out / Re-start Temperatures** | °FDB | -1 / 3 |
| Heating Intake Air Temp [Maximum / Minimum] | °FDB, °FWB / °FDB, °FWB | 75, 65 / 5, 4 | |
| Heating Thermal Lock-out / Re-start Temperatures** | °FDB | -14 / -4 | |
| Type | R454B | ||
| Refrigerant | Pre-Charged Refrigerant Amount | lbs, oz | 2, 2 |
| Maximum Pre-Charged Piping Length | ft [m] | 25 [7.50] | |
| Additional Refrigerant Charge Per Additional Piping Length | oz/ft | 0.22 | |
| Gas Pipe Size O.D. [Flared] | inch [mm] | 3/8 [9.52] | |
| Liquid Pipe Size O.D. [Flared] | inch [mm] | 1/4 [6.35] | |
| Piping | Maximum Piping Length | ft [m] | 65 [20] |
| Maximum Height Difference | ft [m] | 40 [12] | |
| Maximum Number of Bends | 10 | ||
| NOTES: 1Cooling at 95°F (Indoor: 80°F DB, 67°F WB // Outdoor: 95°F DB, 75°F WB) 2Heating at 47°F (Indoor: 70°F DB, 60°F WB // Outdoor: 47°F DB, 43°F WB) 3Heating at 17°F (Indoor: 70°F DB, 60°F WB // Outdoor: 17°F DB, 15°F WB) * Indoor/Outdoor Unit Operating Temperature Range (Cooling Air Temp [Maximum / Minimum]): • Applications should be restricted to comfort cooling only; equipment cooling applications are not recommended for low ambient temperature conditions. ** Outdoor Unit Operating Temperature Range (Cooling Thermal Lock-out / Re-start Temperatures; Heating Thermal Lock-out / Re-start Temperatures): • System cuts out in heating mode and automatically restarts at these temperatures. | |||
Indoor Unit Accessories
| Category | Item | Model Number |
| Lineset | 100 x 1/4 x 100 1/2 Lineset Twin-Tube Insulation | MLS141212T-100 |
| 15 x 1/4 x 15 1/2 Lineset Twin-Tube Insulation | MLS141212T-15 | |
| 15 x 1/4 x 15 3/8 Lineset Twin-Tube Insulation | MLS143812T-15 | |
| 30 x 1/4 x 30 1/2 Lineset Twin-Tube Insulation | MLS141212T-30 | |
| 30 x 1/4 x 30 3/8 Lineset Twin-Tube Insulation | MLS143812T-30 | |
| 50 x 1/4 x 50 1/2 Lineset Twin-Tube Insulation | MLS141212T-50 | |
| 50 x 1/4 x 50 3/8 Lineset Twin-Tube Insulation | MLS143812T-50 | |
| 65 x 1/4 x 65 1/2 Lineset Twin-Tube Insulation | MLS141212T-65 | |
| 65 x 1/4 x 65 3/8 Lineset Twin-Tube Insulation | MLS143812T-65 | |
| Filter | Electro Static Anti-allergy Enzyme Filter | MAC-2320FT-E |
| Microparticle Filter | MAC-EMF515FT-E | |
| Control Interface | Airzone Wired Blueface Controller Black | AZZBSBLUEZEROCN |
| Airzone Wired Blueface Controller White | AZZBSBLUEZEROCB | |
| Airzone Wireless Lite Controller Black | AZZBSLITERN | |
| Airzone Wireless Lite Controller White | AZZBSLITERB | |
| Airzone Wireless Think Controller Black | AZZBSTHINKRN | |
| Airzone Wireless Think Controller White | AZZBSTHINKRB | |
| IT Extender for kumo station | PAC-WHS01IE-E | |
| kumo station for the Comfort app | PAC-WHS01HC-E | |
| M-Net I/O Control Interface for M-Series 2 | MAC-334IF-E | |
| Procon BACnet and Modbus Interface | PAC-UKPRC001-CN-1 | |
| Thermostat Interface for 3rd Party Thermostats | PAC-US445CN-1 | |
| Wireless Interface Adapter for the Comfort app | PAC-USWHS002-WF-2 | |
| Condensate | Blue Diamond Advanced Mini Condensate Pump w Reservoir Sensor 208230V recommended | X87-721 |
| Blue Diamond MaxiBlue Advanced Mini Condensate Pump w Reservoir Sensor 110V up to 48000 BTUH recommended | X87-711 | |
| Blue Diamond MegaBlue Advanced Condensate Pump w Reservoir Sensor | X87-835 | |
| Blue Diamond MicroBlue Mini Condensate Pump 110208230V up to 18000 BTUH | X86-003 | |
| Blue Diamond Sensor Extension Cable 15 Ft | C13-103 | |
| Drain Pan Level SensorControl | SS610E | |
| Fascia Kit for MicroBlue Pump mounts the MicroBlue and sensor directly beneath indoor unit | T18-016 | |
| Refco Condensate Pump 100-240 VAC up to 120000 BTUH | COMBI | |
| Refco Condensate Pump 100-240 VAC | GOBI-II | |
| REFCO PUMP 100-240 VAC 5060 HZ | X86-011 | |
| Sauermann Condensate Pump | S130-230 | |
| Wireless Remote Controller | Lockdown Bracket for Wireless Handheld Remote Controllers | RCMKP1CB |
| RedLINK Wireless Remote Controller | MHK2 | |
| Disconnect Switch | 30A600VUL fits 2 X 4 utility box - Black | TAZ-MS303 |
| 30A600VUL fits 2 X 4 utility box - White | TAZ-MS303W | |
| Remote Sensor | Remote Temperature Sensor for MFZ MLZ and MSZ models | M21EAA307 |
| Wireless temperature and humidity sensor for the Comfort app | PAC-USWHS003-TH-1 | |
| Drain Hose | Flexible Mini-Split Drain Hose | DRX-16 |
| Wired Remote Controller | Deluxe Wired MA Remote Controller 1 | PAR-42MAAUB |
| Simple Direct Wired Remote Controller | PAC-SDW01RC-1 | |
| Simple MA Remote Controller¹ | PAC-YT53CRAU-J | |
| Touch MA Wired Remote Controller¹ | PAR-CT01MAU-SB | |
| Power Supplies and Auxiliary Components | Backup Heat Relay Kit Adapter for CN24 or CN152 Connector | CN24RELAY-KIT-CM3 |
| NOTES: 2Allows IDU Connection to MA Controller: Deluxe MA Remote Controller, Simple MA Controller, Touch MA Controller 1Requires MAC-334IF-E Interface to connect MA controller 1Requires MAC-334IF-E Interface to connect MA controller 1Requires MAC-334IF-E Interface to connect MA controller | ||
Outdoor Unit Accessories
| Category | Item | Model Number |
| Stand | 18 Single Fan Stand | QSMS1801M |
| 24 Single Fan Stand | QSMS2401M | |
| Condenser Wall Bracket - Stainless Steel Finish | QSWBSS | |
| Condenser Wall Bracket | QSWB2000M-1 | |
| Outdoor Unit 3-14 inch Mounting Base Pair - Plastic | DSD-400P | |
| Outdoor Unit Stand 12 High | QSMS1201M | |
| Air Outlet Guide | Air Outlet Guide | MAC-881SG-E |
| Mounting Pad | Condensing Unit Mounting Pad 16 x 36 x 3 | ULTRILITE1 |
| Mini-Split Wire | 14 Gauge 4 wire Armored MiniSplit Cable250 ft roll | SW144-250 |
| 14 Gauge 4 wire Armored MiniSplit Cable50 ft roll | SW144-50 | |
| 14 Gauge 4 wire MiniSplit Cable250 ft roll | S144-250 | |
| 14 Gauge 4 wire MiniSplit Cable50 ft roll | S144-50 | |
| Snow/Rain Diverter | SnowRain Diverter | SRD-1 |
| Control/Service Tool | M- & P-Series Maintenance Tool Cable Set | M21EC0397 |
| Maintenance Tool Interface | PAC-USCMS-MN-1 | |
| Drain Socket | Drain Socket | MAC-871DS |
| Hail Guards | Hail Guard | HG-B4 |
Indoor Unit Dimensions
The indoor unit (MSZ-WX18NL-U1) is depicted with its front, side, and top views. Key dimensions include a width of approximately 33 inches, a depth of 9 inches, and a height of 11-1/16 inches. The installation plate has mounting holes. Piping connections are shown for the liquid line (1/4 inch flared), gas line (3/8 inch flared for WX09/12, 1/2 inch flared for WX18), and drain hose (5/8 inch O.D.).
Outdoor Unit Dimensions and Required Space
The outdoor unit (MUZ-WX18NL) is shown with front, side, and top views. Key dimensions include a width of 31-1/2 inches, a depth of 11-1/4 inches, and a height of 21-5/8 inches. A diagram illustrates the required clearance: at least 4 inches (100 mm) on the front and sides, 14 inches (350 mm) or more on the front, and 8 inches (200 mm) or more on the left, right, and rear if two sides are clear. Refrigerant pipe connections are specified as 1/4 inch for liquid and 1/2 inch for gas (flared).
