This document is an installation manual for a Toshiba R32 Inverter Split Type Air Conditioner, covering models RAS-B10, 13, 18S4KVPG-E (indoor units) and RAS-10, 13, 18S4AVPG-E (outdoor units). It provides comprehensive instructions for safe installation, technical specifications, usage, and maintenance.
Function Description:
The Toshiba R32 Inverter Split Type Air Conditioner is designed for cooling and potentially heating (though heating functions are not explicitly detailed in the provided excerpts, "defrosting process" is mentioned) residential or commercial spaces. As an inverter type, it offers energy efficiency by varying the compressor speed to maintain desired temperatures, rather than cycling on and off. The use of R32 refrigerant, a fluorinated greenhouse gas with a GWP value of 675, indicates a focus on environmental considerations. The system includes an indoor unit for air delivery and an outdoor unit for heat exchange, connected by refrigerant piping and electrical cables.
Important Technical Specifications:
- Refrigerant Type: R32
- GWP Value: 675 (based on F gas regulation 517/2014)
- Copper Pipe Thickness (for R32): Must be more than 0.8 mm.
- Power Supply: 50 Hz, 220-240 V Single phase.
- Maximum Running Current:
- RAS-B10S4KVPG-E: 8.50 A
- RAS-B13S4KVPG-E: 9.95 A
- RAS-B18S4KVPG-E: 12.00 A
- Circuit Breaker Rating:
- RAS-B10S4KVPG-E: 15 A
- RAS-B13S4KVPG-E: 15 A
- RAS-B18S4KVPG-E: 20 A
- Power Supply Cable (H07RN-F or 60245 IEC66):
- RAS-B10S4KVPG-E: 1.25 mm² or more
- RAS-B13S4KVPG-E: 1.5 mm² or more
- RAS-B18S4KVPG-E: 2.0 mm² or more
- Connecting Cable (H07RN-F or 60245 IEC66): Same specifications as power supply cable for respective models.
- Allowable Length of Connecting Pipe (Chargeless): Up to 15 m for all models.
- Maximum Length of Connecting Pipe: 25 m for all models.
- Additional Refrigerant Charging: 20 g/1 m for lengths between 16-25 m.
- Maximum Refrigerant Charging: 1.16 kg for all models.
- Allowable Height of Outdoor Unit Installation Site: 15 m for all models.
- Minimum Indoor Unit Installation Height: 2.5 m.
- Pipe Diameter (Liquid/Gas side):
- RAS-B10, 13S4KVPG-E: Liquid Ø6.35 mm, Gas Ø9.52 mm
- RAS-B18S4KVPG-E: Liquid Ø6.35 mm, Gas Ø12.70 mm
- Flare Nut Tightening Torque:
- Ø6.35 mm: 14 to 18 N·m (1.4 to 1.8 kgf·m)
- Ø9.52 mm: 30 to 42 N·m (3.0 to 4.2 kgf·m)
- Ø12.70 mm: 50 to 62 N·m (5.0 to 6.2 kgf·m)
- Valve Cap Tightening Torque:
- H17-H19: 14-18 N·m
- H22-H30: 33-42 N·m
- H14 (Service Port Cap): 8-12 N·m
- H17 (Service Port Cap): 14-18 N·m
Usage Features:
- Remote Control: The unit comes with a wireless remote controller and a holder. It supports A-B selection for situations where two indoor units are installed in close proximity, preventing simultaneous operation from a single remote control signal.
- Auto Restart Function: The product is designed to automatically restart in the same operating mode after a power failure. This function is ON by default but can be turned OFF if not required.
- Test Operation: A test run (COOL mode) can be initiated by pressing the [RESET] button for 10 seconds.
- Air Inlet Grille: Designed to be opened for filter maintenance.
- Drainage: The system includes provisions for proper drainage of condensate, with instructions for sloped hose installation to prevent water accumulation.
Maintenance Features:
- Air Filter Cleaning: Recommended every 2 weeks. Involves opening the air inlet grille, removing filters, vacuuming or washing, drying, and reinstalling.
- Ultra Pure Filter Maintenance: Recommended every 3-6 months, or when dust covers the filter. Can be cleaned by vacuuming, blowing dust out, or washing with plain water and drying in sunlight (washing may reduce performance). Replacement is recommended every 2 years or sooner (P/N: RB-A622DA).
- Gas Leak Test: After installation, flare nut connections should be checked for gas leaks using a gas leak detector or soap water.
- Piping Work: Emphasizes the importance of clean, dry, and tight connections, evacuation of air using a vacuum pump, and full opening of packed valves before operation. Reusable mechanical connectors and flared joints require renewal or refabrication of sealing parts.
- Curing of Pipes: Instructions are provided for pinching or taping pipes when the indoor or outdoor unit is left open for extended periods to prevent rust from moisture or foreign matter.
- Refrigerant Piping Connection: Detailed steps for cutting, flaring, and tightening refrigerant pipes to prevent leaks and ensure proper system pressure. Specific projection margins for flaring and tightening torques are provided for R32 refrigerant, which operates at higher pressures than R22.
- Electrical Works: Instructions for connecting power supply and connecting cables to both indoor and outdoor units, including stripping lengths, tightening torques, and securing cables with clamps. Emphasizes the use of appropriate cable sizes, circuit breakers, and proper grounding.
- Pre-installation Checks: Before installation, the manual stresses the importance of examining the unit for damage, ensuring the installation location can bear the unit's weight, is free from flammable gases, heat sources, and strong winds, and allows for proper air circulation and maintenance access.
- Refrigerant Handling: Strict warnings against mixing R32 with other gases, using thinner copper pipes, or venting gases into the atmosphere. Emphasizes the need for fresh air in case of refrigerant leaks and the generation of poisonous gas when refrigerant is heated by fire.
- Installation Check List: A comprehensive checklist is provided at the end of the manual for installers to verify proper piping, wiring, and drainage work before handing the unit over to the user.
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