1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your TOSOT Cosmo Series 36,000 BTU Quad 4 Zone Mini Split AC with Heat Pump. Please read this manual thoroughly before installation and use, and retain it for future reference. This system is designed to provide individual temperature control across four distinct zones using a single outdoor unit and four 9,000 BTU indoor units.
2. Safety Information
Important Safety Instructions:
- Installation and maintenance must be performed by qualified, certified HVAC technicians in accordance with all local and national electrical and safety codes.
- Ensure the power supply matches the unit's specifications (230V).
- Do not attempt to repair or modify the unit yourself. Contact qualified service personnel.
- Proper grounding is essential to prevent electrical shock.
- Ensure proper ventilation around the outdoor unit.
- Keep children and pets away from the outdoor unit during operation.
- Refrigerant handling requires specialized tools and training.
3. Package Contents
Verify that all components are present before beginning installation. Your TOSOT Cosmo Series system includes the following:
Indoor Unit Components (x4 sets)
- 1 x Indoor Unit
- 5 x Drywall Anchor
- 2 x Flare Nut
- 4 x Remote Holder Fixing Screw
- 5 x Mounting Plate Fixing Screw
- 2 x AAA Battery
- 1 x Remote Control Holder
- 1 x App Control Quick Guide
- 1 x Remote Control
- 1 x Mounting Plate
- 1 x Insulation Sleeve
- 1 x 20 ft Signal Cable
Outdoor Unit Components (x1 set)
- 1 x Outdoor Unit
- 1 x Drain Joint
- 1 x User Manual
Installation Accessories (x2 sets)
- 1 set x Refrigerant Pipe (16.4 ft copper line set)
- 1 x Sealing Gum
- 2 x Tape
- 1 x Drain Hose
- 1 x Wall Sleeve
4. Setup and Installation
The TOSOT Cosmo Series Mini Split system requires professional installation. While designed for easier installation compared to central AC systems, specific HVAC and electrical knowledge is necessary. The system includes a 16.4-foot copper line set for each indoor unit, but the power cord is not included and must be sourced separately.
4.1 Key Installation Steps
- Mounting Indoor Units: Securely mount each of the four indoor units in their designated zones, ensuring proper clearance for airflow and maintenance.
- Outdoor Unit Placement: Position the single outdoor unit on a stable, level surface, allowing adequate space for air circulation and service access.
- Refrigerant Line Set Connection: Connect the provided copper line sets between each indoor unit and the outdoor unit. This step requires precise flaring, torqueing, and the use of Nylog sealant to prevent leaks.
- Electrical Wiring: Connect the electrical wiring according to the wiring diagram provided in the detailed user manual. Ensure the correct voltage (230V) and breaker size (e.g., 40A) are used.
- Vacuuming the System: Evacuate the refrigerant lines to remove air and moisture. This is a critical step for system efficiency and longevity. A vacuum pump must be used to pull a deep vacuum for at least 30 minutes per line set, and the vacuum must hold for at least an hour to confirm no leaks.
- Refrigerant Release: Once the vacuum test is successful, carefully release the R32 refrigerant from the outdoor unit into the system.
- Drainage Connection: Ensure all indoor units have proper condensate drainage connected to prevent water leaks.
4.2 Refrigerant Information
This system utilizes R32 refrigerant, which has a 67% lower Global Warming Potential (GWP) and requires a 30% lower refrigerant charge compared to R410A systems, contributing to environmental benefits.
5. Operating Instructions
Your TOSOT Mini Split system offers versatile climate control for up to four zones, with individual temperature settings and operating modes.
5.1 Operating Modes
The system supports the following modes:
- Cooling: Provides cooling to maintain desired room temperature.
- Heating: Functions as a heat pump, providing warmth even in extreme cold conditions (down to -22°F).
- Fan: Circulates air without heating or cooling.
- Dehumidifying: Reduces humidity levels in the room.
5.2 Temperature Control
Each indoor unit can be set to a desired temperature between 61°F and 86°F (16°C and 30°C) independently. The advanced inverter technology ensures stable temperatures and quiet operation.
5.3 Smart Control
Manage your system from anywhere using the Gree+ app on your smartphone. The system also supports voice control for hands-free adjustments. Each indoor unit comes with its own remote control for direct adjustments.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your TOSOT Mini Split system.
6.1 Indoor Unit Maintenance
- Filter Cleaning: Clean the air filters every 2-4 weeks, or more frequently depending on usage and air quality. Refer to the detailed user manual for instructions on how to remove and clean the filters.
- Coil Cleaning: Periodically inspect and clean the indoor coil. This should ideally be done by a professional.
6.2 Outdoor Unit Maintenance
- Clear Debris: Keep the area around the outdoor unit clear of leaves, dirt, and other obstructions to ensure proper airflow.
- Coil Cleaning: Clean the outdoor coil annually, or as needed, to remove accumulated dirt and debris. This can be done with a garden hose, but avoid high-pressure sprays.
- Drainage Check: Ensure the drain pan and drain holes are clear to prevent water buildup.
7. Troubleshooting
If you encounter issues with your system, refer to the following basic troubleshooting steps. For complex problems, contact a qualified HVAC technician.
7.1 Common Issues and Solutions
- Unit Not Turning On: Check power supply, circuit breaker, and ensure the remote control batteries are functional.
- Insufficient Cooling/Heating: Verify correct mode selection and temperature settings. Clean air filters. Ensure outdoor unit is not obstructed.
- Unusual Noises: Minor noises during operation are normal. If loud or unusual noises occur, contact a technician.
- Water Leaks: Check indoor unit drainage hose for kinks or blockages. Ensure outdoor unit is level.
- Remote Control Not Working: Replace batteries. Ensure no obstructions between remote and indoor unit.
8. Specifications
Key technical specifications for the TOSOT Cosmo Series 36,000 BTU Quad 4 Zone Mini Split AC with Heat Pump (Model TST-MZ-M36-Q9999):
| Specification | Value |
|---|---|
| Brand | TOSOT |
| Model Number | TST-MZ-M36-Q9999 |
| System Type | Quad 4 Zone Mini Split AC with Heat Pump |
| Total Capacity | 36,000 BTU (3 Tons) |
| Indoor Unit Capacity (each) | 9,000 BTU |
| SEER2 Rating | 21 |
| HSPF2 Rating | 10 |
| Voltage | 230 Volts |
| Outdoor Unit Dimensions (D x W x H) | 40.2" x 16.8" x 32.5" |
| Item Weight | 339 pounds |
| Noise Level (Outdoor Unit) | 63 Decibels |
| Operating Temperature Range (Heating) | -22°F to 118°F |
| Refrigerant Type | R32 |
| Included Components | Remote, User Manual |
| Estimated Coverage Area | 1800 Square Feet |
9. Warranty and Support
TOSOT provides a five-year warranty for this product, ensuring peace of mind regarding your investment. For any service inquiries, technical support, or warranty claims, please contact TOSOT customer service. It is recommended to arrange installation only after receiving all parts of your order, as shipments may arrive in multiple packages or on pallets at different times.
For detailed support, refer to the contact information provided in the full user manual included with your product or visit the official TOSOT website.
