1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your TOSOT Cosmo Series 36,000 BTU Tri-Zone Mini Split AC with Heat Pump. This system is designed to provide individual temperature control across three distinct zones using one outdoor unit and three indoor units (two 9,000 BTU and one 18,000 BTU).
The TOSOT Cosmo Series is an Energy Star-certified system with a 21 SEER2 and 10 HSPF2 rating, designed for energy efficiency and cost savings. It features advanced inverter technology for reliable performance across a wide range of ambient temperatures, from -22℉ to 118℉.
Image 1.1: Overview of the TOSOT Cosmo Series Tri-Zone Mini Split AC system, showing the outdoor unit, three indoor units, remote controls, and mobile app interface.
2. Safety Information
Please read all safety warnings and instructions carefully before installation and operation to prevent injury or property damage. Keep this manual for future reference.
- Electrical Safety: Ensure the unit is connected to a dedicated 230V circuit with appropriate overcurrent protection. All electrical work must be performed by a qualified electrician in accordance with local and national electrical codes.
- Refrigerant Handling: This system uses R32 refrigerant. Handling and charging of refrigerant must only be performed by certified HVAC technicians.
- Installation: Installation should be performed by qualified personnel. Improper installation can lead to water leakage, electric shock, or fire.
- Maintenance: Disconnect power before performing any maintenance or cleaning.
- Children and Pets: Keep children and pets away from the outdoor unit and ensure indoor units are not tampered with.
3. Product Overview
3.1 Key Features
- Tri-Zone Control: Independently manage temperatures in three separate areas.
- High Efficiency: 21 SEER2 and 10 HSPF2 ratings for reduced energy consumption.
- Wide Operating Range: Functions effectively in temperatures from -22℉ to 118℉.
- Smart Control: Wi-Fi enabled for control via the Gree+ app and voice commands.
- Multiple Modes: Cooling, Heating, Dehumidifying, and Fan modes.
3.2 Components Included
The TOSOT Cosmo Series system includes the following main components and accessories:
Image 3.1: Detailed view of the system components, including indoor units, outdoor unit, remote controls, and installation accessories.
- 1 x Outdoor Unit
- 3 x Indoor Units (Two 9,000 BTU, One 18,000 BTU)
- 3 x Remote Controls
- 1 x User Manual (this document)
- 1 x App Control Quick Guide
- 3 x Remote Control Holders
- 3 x Mounting Plates
- Drywall Anchors and Fixing Screws
- 16.4 ft Copper Line Set (for each indoor unit)
- Insulation Sleeves
- Signal Cables
- Drain Joints and Hoses
- Sealing Gum and Tape
- Wall Sleeves
- AAA Batteries (for remotes, not included)
Note: A power cord is not included and must be sourced separately by a qualified installer.
4. Setup & Installation
The TOSOT Cosmo Series is designed for straightforward installation without the need for extensive ductwork. However, due to the complexity of HVAC systems and refrigerant handling, professional installation by a certified HVAC technician is strongly recommended.
4.1 Pre-Installation Considerations
- Location: Select appropriate locations for the outdoor unit and each indoor unit, ensuring proper airflow and drainage.
- Electrical Requirements: Verify that your electrical system can support the 230V power requirements of the unit.
- Line Set Length: The system includes 16.4 ft copper line sets. Ensure this length is sufficient for your installation layout.
- Permits: Check local building codes and obtain any necessary permits before installation.
4.2 Installation Steps (Overview)
- Mount Indoor Units: Secure the mounting plates to the wall and install the indoor units.
- Install Outdoor Unit: Place the outdoor unit on a level, stable surface, ensuring adequate clearance for airflow.
- Connect Refrigerant Lines: Connect the copper line sets between the indoor and outdoor units. This step requires specialized tools and expertise for proper flaring, torqueing, and vacuuming.
- Electrical Wiring: Connect the power supply and communication wiring between units.
- Drainage: Install drain hoses to ensure proper condensate removal from indoor units.
- Vacuum and Charge: Evacuate the system to remove air and moisture, then release the refrigerant.
- Test Operation: Power on the system and test all functions.
For detailed, step-by-step instructions, refer to the comprehensive installation manual provided with your unit.
Image 4.1: Dimensional drawings for various BTU indoor and outdoor units, useful for planning installation space.
5. Operating Instructions
Your TOSOT Mini Split system offers flexible control options via remote control and a smartphone app.
5.1 Basic Operation
Each indoor unit can be controlled independently to set desired temperatures and modes for its specific zone.
- Power On/Off: Press the power button on the remote or in the app.
- Temperature Adjustment: Use the up/down arrows to set the desired temperature between 61℉ and 86℉.
- Mode Selection: Cycle through available modes using the 'Mode' button.
Image 5.1: Visual representation of the four primary operating modes: Cooling, Heating, Dehumidifying, and Fan.
5.2 Operating Modes
- Cooling Mode: Provides cooling to lower the room temperature.
- Heating Mode: Utilizes the heat pump function to warm the room.
- Dehumidifying Mode: Reduces humidity levels in the room.
- Fan Mode: Circulates air without heating or cooling.
- Auto Mode: Automatically selects the appropriate mode based on the set temperature and current room conditions.
5.3 Smart Control (Wi-Fi Enabled)
The system is Wi-Fi enabled, allowing you to control it remotely using the Gree+ app on your smartphone or tablet. Voice control is also supported for hands-free adjustments.
- Download App: Download the Gree+ app from your device's app store.
- Connect to Wi-Fi: Follow the in-app instructions to connect your indoor units to your home Wi-Fi network.
- Remote Control: Adjust settings, change modes, and monitor your system from anywhere.
- Voice Control: Integrate with compatible smart home assistants for voice commands.
Image 5.2: Illustration of smart control options, including the Gree+ mobile application and the physical remote control.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your TOSOT Mini Split system. Always disconnect power to the unit before performing any maintenance.
6.1 Indoor Unit Maintenance
- Air Filter Cleaning: Clean the air filters every 2-4 weeks, or more frequently if the unit is used heavily or in dusty environments. Remove filters, wash with mild soap and water, rinse thoroughly, and allow to dry completely before reinserting.
- Coil Cleaning: Periodically inspect the indoor coil for dust and debris. If necessary, clean with a soft brush or vacuum. For deeper cleaning, professional service is recommended.
- Drain Pan and Line: Ensure the drain pan is free of blockages and the drain line is clear to prevent water overflow.
6.2 Outdoor Unit Maintenance
- Coil Cleaning: Keep the outdoor coil clean and free of leaves, dirt, and other obstructions. Use a soft brush or hose to gently clean the fins. Avoid bending the fins.
- Clearance: Ensure there is adequate clearance around the outdoor unit for proper airflow. Remove any vegetation or debris that may obstruct it.
- Base: Check that the outdoor unit's base is level and stable.
6.3 Professional Inspection
It is recommended to have a qualified HVAC technician perform an annual inspection and tune-up of your system to ensure efficient operation and identify any potential issues.
7. Troubleshooting
Before contacting customer support, review the following common issues and their potential solutions. For more complex problems, consult a qualified technician.
7.1 Common Issues and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on | No power, remote batteries dead, circuit breaker tripped | Check power supply, replace remote batteries, reset circuit breaker. |
| Insufficient cooling/heating | Dirty air filters, blocked outdoor unit, incorrect mode, low refrigerant | Clean air filters, clear obstructions from outdoor unit, select correct mode, contact technician for refrigerant check. |
| Water leakage from indoor unit | Blocked drain line, improper installation | Clear drain line, ensure proper slope. If issue persists, contact installer. |
| Unusual noise | Loose parts, fan obstruction, refrigerant flow noise | Inspect for loose parts or obstructions. Some noises (e.g., gurgling) are normal refrigerant flow sounds. If loud or persistent, contact technician. |
| Wi-Fi connectivity issues | Router issues, incorrect Wi-Fi password, unit too far from router | Restart router, re-enter Wi-Fi password in app, ensure strong signal. |
7.2 Error Codes
If your unit displays an error code, refer to the full user manual for a list of codes and their corresponding troubleshooting steps. Do not attempt to repair internal components unless you are a qualified technician.
8. Specifications
Below are the technical specifications for the TOSOT Cosmo Series 36,000 BTU Tri-Zone Mini Split AC with Heat Pump.
| Specification | Value |
|---|---|
| Brand | TOSOT |
| Model Info | TST-MZ-36T9X19K+18KBTU, 3 Tons |
| Part Number | C36-T9918 |
| System Type | Tri-Zone Mini-Split with Heat Pump |
| Total Capacity | 36,000 BTU (3 Tons) |
| Indoor Unit Configuration | Two 9,000 BTU units, One 18,000 BTU unit |
| Seasonal Energy Efficiency Ratio (SEER2) | 21 |
| Heating Seasonal Performance Factor (HSPF2) | 10 |
| Voltage | 230 Volts |
| Wattage | 9964.41 watts |
| Operating Temperature Range | -22℉ to 118℉ |
| Noise Level (Outdoor Unit) | 63 dB |
| Item Weight (Outdoor Unit) | 300 pounds |
| Product Dimensions (Outdoor Unit) | 40.2 x 16.8 x 32.5 inches |
| Refrigerant Type | R32 (Note: Image 2.1 shows R410 vs R32, but the product description implies R32 is used for efficiency) |
| Special Features | Heating and Cooling Function, Remote Controlled, Wi-Fi Enabled |
| Estimated Floor Area Coverage | 2100 Square Feet (for 9,000+9,000+18,000 BTU configuration) |
Image 8.1: Illustration highlighting the 21.0 SEER2 rating and potential energy cost savings of up to 24%.
Image 8.2: Comparison chart illustrating the environmental benefits of R32 refrigerant over R410, including lower Global Warming Potential and reduced charge.
Image 8.3: Table detailing maximum coverage areas for different indoor unit BTU configurations.
9. Warranty & Support
TOSOT is committed to providing quality products and customer service.
9.1 Product Warranty
Your TOSOT Mini Split system comes with a five-year warranty. Please retain your proof of purchase for warranty claims. For specific terms and conditions, refer to the warranty card included with your product or contact TOSOT customer support.
9.2 Returns Policy
This product is eligible for 30-day easy returns. Please refer to the retailer's return policy for detailed instructions and conditions.
9.3 Customer Support
TOSOT offers US-based customer support to assist with any questions or issues you may encounter. For technical assistance, troubleshooting, or warranty service, please contact TOSOT customer support directly.
You can also visit the official TOSOT Store for additional resources and product information.
Image 9.1: Information on TOSOT's commitment to quality, secure packaging, and US-based customer support.
Important Note: Your order may be shipped in multiple packages or on pallets and may arrive at different times. Please ensure you have received all components before scheduling installation.
