TOSHIBA RAV-GV801ATP-E (01) PDF DOCUMENT

The TOSHIBA RAV-GV801ATP-E air conditioner uses the HFC refrigerant R32, which does not destroy the ozone layer. This outdoor unit is designed exclusively for use with R32 refrigerant and must be used in combination with an R32 refrigerant indoor unit.

To prevent fire hazards from refrigerant leaks in small spaces, follow these installation space instructions:

• Provide open space on at least one of the four sides of the outdoor unit.

• If both the discharge and intake sides face walls, and obstacles are on the other two sides, ensure there is enough space for a person to pass (600 mm or more) on one side. This helps prevent leaked refrigerant from accumulating.

Installation Clearance (Unit: mm)

Obstacle at rear side only (Upper side free):

• Single unit: 150 mm or more clearance at the rear.

Obstacles on both right and left sides:

• 150 mm or more at the rear, 200 mm or more on top (if obstacle height is lower than the unit), and 300 mm or more on both sides.

Serial installation of two or more units (Obstacles on sides):

• 150 mm or more at the rear, 200 mm or more on top (if obstacle height is lower than the unit), and 300 mm or more between units and at the ends.

Obstacle also above unit:

• 150 mm or more at the rear and 500 mm or more above the unit.

Obstacle in front (Above unit free):

• Single unit: 500 mm or more clearance in front.

• Serial installation: At least 1,000 mm clearance in front.

Obstacles in both front and rear:

• Single unit: At least 1,000 mm in front and 150 mm at the rear. The height of obstacles should be lower than the unit.

• Serial installation: 1,000 mm or more in front, 300 mm or more at the rear, 300 mm or more between units, and 200 mm or more at the ends.

The TOSHIBA RAV-GV801ATP-E appliance must be connected to the main power supply by means of a switch with a contact separation of at least 3 mm. Do not wash the air conditioner with pressure washers, as electric leaks may cause electric shocks or fires.

Since this air conditioner uses R32 refrigerant, special tools and precautions are necessary to prevent mixing of refrigerants or oils. Use new and clean piping materials with high-pressure fittings made for R32 or R410A.

Legend:

△: Conventional tools (R32 or R410A)

◇: Prepared newly (Use for R32 only)

Length of refrigerant pipe:

• The pipe length between the indoor and outdoor unit should be between 5 to 30 meters.

• No additional refrigerant is needed for pipe lengths up to 20 meters.

• If the pipe length exceeds 20 meters, add the specified amount of refrigerant.

• Do not connect a refrigerant pipe shorter than 5 meters, as it may cause malfunctions.

Airtight test:

1. Further tighten the spindle valves on the gas and liquid sides.

2. Pressurize the pipe with nitrogen gas from the service port to the design pressure of 4.15 MPa.

3. Check for leaks using an HFC refrigerant leak tester.

4. After the test, evacuate the nitrogen gas.

Air purge:

• Use a vacuum pump to purge the air. Do not use the refrigerant charged in the outdoor unit for this purpose.

Electrical wiring:

• Fix power and interconnection wires with clamps so they do not contact the cabinet.

Earthing:

• Ensure proper earthing is provided to prevent electric shock. Do not connect ground wires to gas pipes, water pipes, lightning rods, or telephone ground wires.

Test run:

• Turn on the leakage breaker at least 12 hours before starting a test run to protect the compressor during startup.

For refrigerant piping, adhere to the following:

• Use flare nuts included with the unit to prevent gas leakage. Do not re-use flares.

• Use seamless phosphorous deoxidized copper pipe.

• For Ø6.35, Ø9.52, Ø12.7 pipes, wall thickness must be 0.8 mm or more.

• For Ø15.88 pipes, wall thickness must be 1.0 mm or more.

• For long refrigerant pipes, provide support brackets every 2.5 to 3 meters to prevent abnormal sounds.

Install the outdoor unit in a location that meets the following conditions:

• A location durable enough to support the weight of the unit.

• A well-ventilated location free from obstacles near air intakes and discharge.

• A location not exposed to direct sunlight or rain.

• A location that does not increase operating noise or vibration.

• A location that does not cause drainage problems.

• When installed in an elevated position, ensure its feet are secured.

Additionally:

1. Install the unit where discharge air is not blocked.

2. In locations exposed to strong winds (like a coast or high stories of a building), use a duct or wind shield to ensure normal fan operation.

3. If installing where there are constantly strong winds, install the unit so its discharge port faces a wall (500 mm or more away) or is at a right angle to the wind direction.

Avoid installing the outdoor unit in the following locations:

• Locations subject to combustible gas leaks, which could cause a fire.

• Locations with a saline atmosphere (coastal area) or full of sulfide gas (hot-spring area).

• Locations subject to oil, vapor, oily smoke, or corrosive gases.

• Locations where organic solvent is used.

• Places where iron or other metal dust is present, as it may spontaneously combust.

• Locations where high-frequency equipment is used, which may cause malfunction of the air conditioner.

• Locations where discharged air blows against a neighbor’s window or where operating noise is transmitted.

Flaring Process:

1. Cut the pipe with a pipe cutter and remove any burrs, being careful not to scratch the inner surface.

2. Insert a flare nut (supplied with the unit or one specified for R32/R410A) onto the pipe and then flare the pipe.

Tightening the Connecting Pipe:

1. Align the centers of the connecting pipes and fully tighten the flare nut by hand.

2. Use a torque wrench to tighten the nut to the specified torque. For the gas side valve, use two wrenches to prevent the valve from twisting.

Do not apply refrigerating machine oil to the flare surface.

Piping Connection and Tightening Torque

Allowable pipe length (m) – Single

Pipe diameter (mm) and Bent Portions – Single

After completing the refrigerant piping work, connect a nitrogen gas cylinder and pressurize the pipes to conduct the airtight test. Never use oxygen, flammable gas, or noxious gas for the test.

Step 1: Pressurize to 0.5 MPa (5 kg/cm²G) for 5 minutes or longer. This can help discover major leaks.

Step 2: Pressurize to 1.5 MPa (15 kg/cm²G) for 5 minutes or longer.

Step 3: Pressurize to 4.15 MPa (42 kg/cm²G) for 24 hours. This can help discover micro leaks.

Note: If the ambient temperature changes between pressurization and the 24-hour check, the pressure will change by approximately 0.01 MPa per 1°C; compensate for this.

If the pressure drops, check connections for leakage with foaming liquid. Fix any leaks and perform the test again. After the test is successfully completed, evacuate the nitrogen gas.

Use a vacuum pump with a backflow preventer to purge air from the connecting pipes. The following steps should be performed:

1. With the manifold valve closed, connect the charge hose to the charge port of the set.

2. Open the Handle Low on the gauge manifold fully.

3. Turn ON the vacuum pump.

4. Slightly loosen the flare nut of the packed valve on the gas side to check that air is passing through, then retighten the flare nut.

5. Continue vacuuming until the compound pressure gauge indicates -101 kPa (-76 cmHg).

6. Close the Handle Low completely.

7. Turn OFF the vacuum pump.

8. Leave it for 1 to 2 minutes and check that the gauge indicator does not return (rise). If it does, there is a leak.

9. Fully open the valve stem (first liquid side, then gas side).

10. Disconnect the charge hose from the charge port.

11. Securely tighten the valve caps of the charge port.

A pump down recovers refrigerant into the outdoor unit.

1. Turn off the air conditioner system.

2. Connect the charge hose from the manifold valve to the service port of the packed valve on the gas side.

3. Turn on the air conditioner in cooling operation for more than 10 minutes.

4. Check that the operating pressure is normal.

5. Remove the valve rod caps from both service valves.

6. Use a hexagon wrench to fully close the valve rod on the Liquid side.

7. Continue to operate the system until the gauge of the manifold drops into the range of 0.5 – 0 kgf/cm².

8. Use a hexagon wrench to fully close the valve rod on the Gas side. Immediately turn off the air conditioner system.

9. Remove the gauge manifold from the service port.

10. Securely tighten the valve rod caps on both service valves.

Fully open the valves of the outdoor unit by turning the valve stem with a hexagon wrench until it strikes the stopper. It is unnecessary to apply further force. First, fully open the valve on the liquid side, and then fully open the valve on the gas side.

Securely tighten the cap with a torque wrench after opening.

Do not open or close the valves when the ambient temperature is -20°C or less, as it may damage the valve O-rings.

Hexagonal wrench size required

The TOSHIBA RAV-GV801ATP-E is a 20 m chargeless type, meaning it does not need additional refrigerant for pipe lengths up to 20 m. If the pipe is longer than 20 m, add the specified amount of liquid refrigerant.

Replenishing Procedure:

1. After vacuuming the pipe, close the valves and charge the liquid refrigerant while the air conditioner is off.

2. If the full amount cannot be charged, add the remaining required amount from the charge port of the gas side valve during cooling operation.

Formula for calculating additional refrigerant:

Amount of additional refrigerant (g) = Amount of additional refrigerant per meter (α) x (pipe length l – 20)

CAUTION: Incorrect or incomplete wiring may lead to fire or smoke. Always use an installation fuse and prepare an exclusive power supply.

How to wire:

1. Remove the terminal cover by taking off the mounting screw (1 piece).

2. Connect the power supply wires and system interconnection wires to the terminal block.

3. Tighten the terminal block screws, matching the wires to the terminal numbers.

4. Attach the terminal cover.

• Insulate unsheathed cords with electrical insulation tape. Use wires long enough to cover the entire length without joins.

Power and Wire Specifications

For proper performance, operate the air conditioner under the following temperature conditions. If used outside of these ranges, safety protection may activate.

Yes, existing piping can be used if it meets certain conditions. Carefully check for:

• Wall thickness (must be within the specified range).

• Scratches and dents.

• Water, oil, dirt, or dust inside the pipe.

• Flare looseness and leakage from welds.

• Deterioration of copper pipe and heat insulator.

Do not use existing pipe if:

• The pipe has been open or disconnected for a long period.

• The pipe was connected to an outdoor unit that did not use R32 or R410A refrigerant.

• The existing pipe wall thickness is less than the thicknesses specified below.

Reference Wall Thickness (mm) for Existing Pipe

Refrigerant recovery can be performed using the SW01 and SW02 switches on the outdoor unit’s P.C. board. Wear electrically insulated gloves when operating these switches.

1. Operate the indoor unit in fan mode.

2. Check that the outdoor unit LEDs are in their initial status (D805 is ON, others are OFF or rapid flashing). If not, hold SW01 and SW02 simultaneously for at least 5 seconds to reset them.

3. Hold down SW01 for at least 5 seconds. D804 will flash slowly.

4. Press SW01 once to set the “refrigerant recovery LED display” (D800, D801, D802 OFF; D803, D804 ON; D805 rapid flashing).

5. Press SW02 to set D805 to rapid flashing.

6. Hold down SW02 for at least 5 seconds. The forced cooling operation will start (D804 flashes slowly, D805 lights up).

7. After at least 3 minutes of operation, close the valve on the liquid side.

8. Once the refrigerant is recovered, close the valve on the gas side.

9. Hold down SW01 and SW02 simultaneously for at least 5 seconds. The LEDs will return to the initial status, and the operation will stop.

10. Turn off the power.

You can diagnose faults by observing the LED lights (D800-D805) on the outdoor unit’s P.C. board. The patterns correspond to specific errors.

Legend: ●: ON, ○: OFF, ◎: Rapid flashing (5 times/sec.)

* Under 70 dBA