TOSHIBA RAV-GM1101AT8P-E RAV Digital Inverter Outdoor Instruction Manual

TOSHIBA RAV-GM1101AT8P-E RAV Digital Inverter Outdoor

Original instruction

ADOPTION OF R32 REFRIGERANT
This air conditioner adopts the HFC refrigerant (R32) which does not destroy the ozone layer. This outdoor unit is designed exclusively for use with R32 refrigerant. Be sure to use in combination with a R32 refrigerant indoor unit. This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equal to Ssc (1) at the interface point between the user’s supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power Ssc greater than or equal to Ssc (1).

*Ssc (1)**

Model

| Ssc (kVA)
---|---
Single system| Twin system
RAV-GM1101AT8(J)P-E| 1331| 1331
RAV-GM1401AT8(J)P-E| 1331| 1331

Center of gravity

Cautions for outdoor unit installation space

• In the event that the outdoor unit is installed in a small space and refrigerant leaks, accumulation of highly concentrated refrigerant may cause a fi re hazard. Therefore, be sure to follow the installation space instructions in the Installation Manual, and provide open space on at least one of the four outdoor unit sides.
• In particular, when both the discharge and intake sides face walls and obstacles are also placed on both sides of the outdoor unit, take steps to provide space wide enough for a person to pass (600 mm or more) on one side to prevent leaked refrigerant from accumulating.

To disconnect the appliance from main power supply

• This 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 air conditioners with pressure washers.
• Electric leaks may cause electric shocks or fi res.

Accessory parts

Installation of R32 refrigerant air conditioner

CAUTION

R32 refrigerant air conditioner installation

• This air conditioner adopts the HFC refrigerant (R32) which does not destroy ozone layer. Therefore, during installation work, make sure that water, dust, former refrigerant, or refrigerant oil does not enterthe R32 refrigerant air conditioner cycle. To prevent mixing of refrigerant or refrigerant oil, the sizes of connecting sections of charge port on the main unit and installation tools are different from those of the conventional refrigerant units. Accordingly, special tools are required for the R32 or R410A refrigerant units. For connecting pipes, use new and clean piping materials with high pressure fittings made for the R32 or R410A only, so that water and/or dust does not enter.
• When using existing piping, refer to “14 Appendix – [1] Existing piping”.

Required Tools/Equipment and Precautions for Use
Prepare the tools and equipment listed in the following table before starting the installation work. Newly prepared tools and equipment must be used exclusively.

Vacuuming / charging refrigerant and operation check

|  Conventional tools (R410A)
Charging hose|  Conventional tools (R410A)

Charging cylinder

|

Can not be used

| Unusable (Use the electronic refrigerant charging scale)
Gas leak detector| Charging refrigerant|  Conventional tools (R32 or R410A)

Vacuum pump

|

Vacuum drying

|  Conventional tools (R32 or R410A) Usable if the backflow prevention adapter is installed.
Vacuum pump with backflow prevention function|

Vacuum drying

|

Conventional tools (R32 or R410A)

Flare tool| Flare machining of pipes|  Conventional tools (R410A)
Bender| Bending pipes|  Conventional tools (R410A)
---|---|---
Refrigerant recovery equipment| Refrigerant recovery|  Conventional tools (R32 or R410A)
Torque wrench| Tightening flare nuts|  Conventional tools (R410A)
Pipe cutter| Cutting pipes|  Conventional tools (R410A)
Refrigerant cylinder| Charging refrigerant|  Prepared newly (Use for R32 only)
Welding machine and nitrogen cylinder| ****

Welding pipes

|  Conventional tools (R410A)
Electronic refrigerant charging scale| ****

Charging refrigerant

|  Conventional tools (R32 or R410A)

Refrigerant Piping

R32 refrigerant
CAUTION

• Incomplete fl aring may cause refrigerant gas leakage.
• Do not re-use fl ares. Use new fl ares to prevent refrigerant gas leakage.
• Use fl are nuts that are included with the unit. Using different fl are nuts may cause refrigerant gas leakage. Use the following item for the refrigerant piping.
• Material : Seamless phosphorous deoxidized copper pipe.
• Ø6.35, Ø9.52, Ø12.7 Wall thickness 0.8 mm or more
• Ø15.88 Wall thickness 1.0 mm or more

REQUIREMENT
When the refrigerant pipe is long, provide support brackets at intervals of 2.5 to 3 m to clamp the refrigerant pipe. nOtherwise, abnormal sound may be generated.

Installation conditions

• Before installation
  Be sure to prepare to the following items before installation.

• Length of refrigerant pipe****

Model

| Length of refrigerant pipe connected to indoor / outdoor unit|

Item

---|---|---
 |  | Addition of refrigerant
 |  | at the local site in
 |  | unnecessary for
 |  | refrigerant pipe lengths
GM1101

GM1401

| 5 to 50 m| up to 30 m. If the

refrigerant pipe length

 |  | exceeds 30 m. Add
 |  | refrigerant in the amount
 |  | given in “Charging
 |  | additional refrigerant”.

• Caution during addition of refrig erant. Charge the refrigerant accurately. Overcharging may cause serious trouble with the compressor.
• Do not connect a refrigerant pipe that is shorter than 5 m. This may cause a malfunction of the compressor or other devices.

Airtight test

1. Before starting an airtight test, further tighten the spindle valves on the gas and liquid sides.
2. Pressurize the pipe with nitrogen gas charged from the service port to the design pressure (4.15 MPa) to conduct an airtight test.
3. After the airtight test is completed, evacuate the nitrogen gas.

Air purge

• To purge air, use a vacuum pump.
• Do not use refrigerant charged in the outdoor unit to purge air. (The air purge refrigerant is not contained in the outdoor unit.)

Electrical wiring
Be sure to fix the power wires and Indoor / Outdoor connecting wires with clamps so that they do not come into contact with the cabinet, etc.

Earthing
WARNING
Make sure that proper earthing is provided.

• Proper earthing can prevent charging of electricity on the outdoor unit surface due to the presence of a high frequency in the frequency converter (inverter) of the outdoor unit, as well as prevent electric shock. If the outdoor unit is not properly earthed, you may be exposed to an electric shock.
• Be sure to connect the earth wire. Incom plete earthing can cause an electric shock. Do not connect earth wires to gas pipes, water pipes, lightning rods or earth wires for telephone wires.

Test run
Turn on the leakage breaker at least 12 hours before starting a test run to protect the compressor during startup.
CAUTION
Incorrect installation work may result in a malfunction or complaints from customers.

Installation location

WARNING

• Install the outdoor unit properly in a location that is durable enough to support the weight of the outdoor unit.
• Insufficient durability may cause the outdoor unit to fall, which may result in injury.
• Pay special attention when installing the unit onto a wall surface.

CAUTION
Do not install the outdoor unit in a location that is subject to combustible gas leaks. Accumulation of combustible gas around the outdoor unit may cause a fire. Install the outdoor unit in a location that meets the following conditions after the customer’s consent is obtained.

• A well-ventilated location free from obstacles near the air intakes and air discharge.
• A location that is not exposed to rain or direct sunlight.
• A location that does not increase the operating noise or vibration of the outdoor unit.
• A location that does not produce any drainage problems from discharged water. Do not install the outdoor unit in the following locations.
• A location with a saline atmosphere (coastal area) or one that is full of sulfide gas (hot-spring area) (Special maintenance is required).
• A location subject to oil, vapor, oily smoke, or corrosive gases.
• A location in which organic solvent is used.
• Places where iron or other metal dust is present. If iron or other metal dust adheres to or collects on the interior of the air conditioner, it may spontaneously combust and start a fire.
• A location where high-frequency equipment (including inverter equipment, private power generator, medical equipment, and communication equipment) is used (Installation in such a location may cause malfunction of the air conditioner, abnormal control or problems due to noise from such equipment).
• A location in which the discharged air of the outdoor unit blows against the window of a neighboring house.
• A location where the operating noise of the outdoor unit is transmitted.
• When the outdoor unit is installed in an elevated position, be sure to secure its feet.
•  A location in which drain water poses any problems.

CAUTION

1. Install the outdoor unit in a location where the discharge air is not blocked.
2. When an outdoor unit is installed in a location that is always exposed to strong winds like a coast or on the high stories of a building, secure normal fan operation by using a duct or wind shield.
3. When installing the outdoor unit in a location that is constantly exposed to strong winds such as on the upper stairs or rooftop of a building, apply the windproofing measures referred to in the following examples.
4. Install the unit so that its discharge port faces the wall of the building. Keep a distance 500 mm or more between the unit and wall surface.
5. Consider the wind direction during the operational season of the air conditioner, and install the unit so that the discharge port is set at a right angle relative to the wind direction.

When using an air conditioner under low outside temperature conditions (Outside temp: -5 °C or lower) in COOL mode, prepare a duct or wind shield so that it is not affected by the wind.

< Example>

Necessary space for installation

Obstacle at rear side

Upper side is free

1. Single unit installation
2. Obstacles on both right and left sides
3. Serial installation of two or more units
   The height of the obstacle should be lower than the height of the outdoor unit.

Obstacle also above unit

Obstacle in front
Above unit is free

1. Single unit installation
2. Serial installation of two or more units

Obstacle also at the above unit

Obstacles in both front and rear of unit
Open above and to the right and left of the unit. The height of an obstacle in both the front and rear of the unit, should be lower than the height of the outdoor unit.

Standard installation

1. Single unit installation
2. Serial installation of two or more units

Serial installation in front and rear
Open above and to the right and left of the unit. The height of an obstacle in both the front and rear of the unit, should be lower than the height of the outdoor unit.

Standard installation

Installation of outdoor unit

• Before installation, check the strength and horizontalness of the base so that abnormal sounds do not emanate.

• According to the following base diagram, fix the base firmly with the anchor bolts. (Anchor bolt, nut: M10 x 4 pairs)

• As shown in the figure below, install the foundation and vibration-proof rubber pads to directly support the bottom surface of the fixing leg that is in contact with and underneath the bottom plate of the outdoor unit.

• When installing the foundation for an outdoor unit with downward piping, consider the piping work.

Set the out margin of the anchor bolt to 15 mm or less.

• When water is to be drained through the drain hose, attach the following drain nipple and waterproof rubber cap, and use the drain hose (Inner dia.: 16 mm) sold on the market. Also seal knockout hole and the screws securely with silicone material, etc., to prevent water from leaking. Some conditions may cause dewing or dripping of water.
• When collectively draining discharged water completely, use a drain pan.

For reference
If a heating operation is to be continuously performed for a long time under the condition that the outdoor temperature is 0 °C or lower, draining defrosted water may be difficult due to the bottom plate freezing, resulting in trouble with the cabinet or fan. It is recommended to procure an anti- freeze heater locally in order to safely install the air conditioner. For details, contact the dealer.

WARNING

• Be sure to install the outdoor unit in a place able to bear its weight. If strength is insufficient, the unit may fall down resulting in human injury.
• Perform specified installation work to protect against strong wind and earthquakes.
• If the outdoor unit is imperfectly installed, an accident by falling or dropping may be caused.

Refrigerant piping

Refrigerant Piping

1. Use the following items for the refrigerant piping.
   Material : Seamless phosphorous deoxidized copper pipe.

   • Ø6.35, Ø9.52, Ø12.7 Wall thickness 0.8 mm or more
   • Ø15.88 Wall thickness 1.0 mm or more
   • Do not use any copper pipes with a wall thickness less than these thicknesses.

Removing service panel

• Remove the screws at 2 locations and slide the service panel down. Next, detach the right-side claws followed by left-side claws to remove the service panel.
• When doing this, pulling the service panel towards the front could damage the claws. When attaching the service panel, attach the left claws followed by the right claws and lift the service panel upwards and secure it with screws in the 2 locations.

Knockout of pipe cover

Knockout procedure

• The indoor / outdoor connecting pipes can be connected in 4 directions. Take off the knockout part of the pipe cover through which pipes or wires will pass through the base plate.

• Detach the pipe cover and tap on the knockout section a few times with the shank of a screwdriver. A knockout hole can easily be punched.

• After punching out the knockout hole, remove burrs from the hole and then install the supplied protective bush and guard material around the passage hole to protect wires and pipes.

• Be sure to attach the pipe covers after pipes have been connected. Cut the slits under the pipe covers to facilitate the installation.

• After connecting the pipes, be sure to mount the pipe cover. The pipe cover is easily mounted by cutting off the slit at the lower part of the pipe cover.

• Be sure to wear heavy work gloves while working.

Optional installation parts (Locally procured)

A

| Refrigerant piping Liquid side: Ø9.5 mm Gas side: Ø15.9 mm| ****

One each

B| Pipe insulating material (polyethylene foam, 10 mm thick)| 1
C| Putty, PVC tape| One each

Refrigerant piping connection

CAUTION

IMPORTANT 4 POINTS FOR PIPING WORK

1. Reusable mechanical connectors and flared joints are not allowed indoors. When mechanical connectors are reused indoors, sealing parts shall be renewed. When flared joints are reused indoors, the flare part shall be refabricated.
2. Tight connection (between pipes and unit)
3. Evacuate the air in the connecting pipes by using VACUUM PUMP.
4. Check the gas leakage. (Connected points)

Piping connection

Liquid side

Outer diameter| Thickness
Ø9.5 mm| 0.8 mm
Gas side

Outer diameter| Thickness
Ø15.9 mm| 1.0 mm

Flaring

1. Cut the pipe with a pipe cutter. Be sure to remove burrs that may cause a gas leak.
2. Insert a flare nut into the pipe, and then flare the pipe. Use the flare nuts supplied with the air conditioner or those for R32. Insert a flare nut into the pipe, and flare the pipe. Use the flare nuts supplied with the air conditioner or flare nuts for R32 or R410A. However, the conventional tools can be used by adjusting the projection margin of the copper pipe.

Projection margin in flaring: B (Unit: mm)

RIDGID (Clutch type)

Outer dia. of copper pipe| R32/R410A

tool used

| Conventional tool used
---|---|---
9.5|

0 to 0.5

|

1.0 to 1.5

15.9

Flaring dia. size: A (Unit: mm)

Outer dia. of copper pipe| A +0

–0.4

---|---
9.5| 13.2
15.9| 19.7

CAUTION

• Do not scratch the inner surface of the flared part when removing burrs.
• Flare processing under the condition of scratches on the inner surface of flare processing part will cause refrigerant gas leak.
• Check that the flared part is not scratched, deformed, stepped, or flattened, and that there are no chips adhered or other problems, after flare processing.
• Do not apply refrigerating machine oil to the flare surface.

Tightening of connecting part

1. Align the centers of the connecting pipes and fully tighten the flare nut with your fingers. Then fix the nut with a wrench as shown in the figure and tighten it with a torque wrench.
2. As shown in the figure, be sure to use two wrenches to loosen or tighten the flare nut of the valve on the gas side. If you use a single crescent, the flare nut cannot be tightened to the required tightening torque. On the other hand, use a single crescent to loosen or tighten the flare nut of the valve on the liquid side.

CAUTION

• Do not put the crescent wrench on the cap or cover. The valve may break.
• If applying excessive torque, the nut may break according to some installation conditions.

Refrigerant pipe length

Single

Number of bent portions

---|---
Gas side| Liquid side
Ø15.9| Ø9.5| 10 or less

Simultaneous twin

System

|

Model

| Allowable pipe length (m)| Height difference (m)
---|---|---|---
Total length

•  S 1 + S 2

•  S 1 + S 3

•  S 1 + S 4

Maximum

| Distributed pipes

• S 2

• S 3

• S 4

Maximum

| Distributed pipes

• S 3 – S 2

• S 4 – S 2

• S 4 – S 3

Maximum

| Indoor-outdoor H|

Indoor- indoor (Ah)

Indoor unit: Upper

|

Outdoor unit: Upper

TWIN

| GM110| 50| 15| 10| 30| 30| 0.5
GM140| 50| 15| 10| 30| 30| 0.5

System

|

Model

| Pipe diameter (mm)| Number of bent portions
---|---|---|---
Main pipe| Branching pipe
Gas side| Liquid side| Gas side| Liquid side

TWIN

| GM110| Ø15.9| Ø9.5| Ø12.7| Ø6.4| 10 or less
GM140| Ø15.9| Ø9.5| Ø15.9| Ø9.5| 10 or less

Air purging

Airtight Test
After completing the refrigerant piping work, perform an airtight test. Connect a nitrogen gas cylinder an pressurize the pipes with nitrogen gas as follows to conduct the airtight test.

Gas leak check

• Step 1 ….Pressurize to 0.5 MPa (5 kg/cm2G) for 5 minutes or longer. Major leaks can be discovered.
• 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. ……………. Micro leaks can be discovered.
  (However, note that when the ambient temperature differs during pressurization and after 24 hours, the pressure will change by approximately 0.01 MPa (0.1 kg/cm2G) per 1°C, so this should be compensated.)

If the pressure drops in steps 1 through 3, check the connections for leakage. Check for leaks with foaming liquid, etc., take steps to fix the leaks such as brazing the pipes again and tightening the flare nuts, and then perform the airtight test again. After the airtight test is completed, evacuate the nitrogen gas.

Air purge
With respect to the preservation of the terrestrial environment, adopt “Vacuum pump” to purge air (Evacuate air in the connecting pipes) when installing the unit.

• Do not discharge the refrigerant gas to the atmosphere to preserve the terrestrial environment.
• Use a vacuum pump to discharge the air (nitrogen, etc.) that remains in the set. If air remains, the capacity may decrease.
• For the vacuum pump, be sure to use one with a backflow preventer so that the oil in the pump does not backflow into the pipe of the air conditioner when the pump stops.
• (If oil in the vacuum pump is put in an air conditioner including R32, it may cause trouble with the refrigeration cycle.)

Vacuum pump

1. Use the vacuum pump, vacuum pump adapter, and gauge manifold correctly referring to the manuals supplied with each tool before using them. Check that the vacuum pump oil is filled up to the specified line of the oil gauge.
2. When air is not charged, check again whether the connecting port of the discharge hose, which has a projection to push the valve core, is firmly connected to the charge port.

Pump down process

1. Turn off the Air Conditioner system.
2. Connect the charge hose from the manifold valve to the service port of the packed valve at gas side.
3. Turn on the Air Conditioner system in cooling operation more than 10 minutes.
4. Check the operating pressure of the system should
5. Release the valve rod cap of both service valves.
6. Use the Hexagon wrench to turning the valve rod of Liquid side fully close. (*Make sure no entering air into the system)
7. Continue operate Air Conditioner system until the gauge of manifold dropped into the range of 0.5 – 0 kgf/cm2.
8. Use the Hexagon wrench to turning the valve rod Conditioner system immediately thereafter.
9. Remove the gauge manifold from the service port of the packed valve.
10. Securely tighten the valve rod cap to the both service valves.

CAUTION

Should be check the compressor operating condition while pumping down process. It must not any abnormal sound, more vibration. It is abnormal condition appears and must turn off the Air Conditioner immediately.

How to open the valve

Fully open the valves of the outdoor unit. (First fully open the valve on the liquid side, and then fully open the valve on the gas side.)

• Do not open or close the valves when the ambient temperature is -20°C or less. Doing so may damage the valve O-rings and result in refrigerant leakage.

Liquid side
Open the valve with a 4 mm hexagon wrench.

Gas side

• While the valve is fully opened, after the screwdriver or wrench has reached the stopper, do not apply torque exceeding 5N*M. Applying exceesive torque may damage the valve.

Valve handling precautions

• Open the valve stem until it strikes the stopper. It is unnecessary to apply further force.
• Securely tighten the cap with a torque wrench.

Cap tightening torque

Valve size

| Ø9.5 mm| 14 to 18 N•m

(1.4 to 1.8 kgf•m)

---|---|---
Ø15.9 mm| 20 to 25 N•m

(2.0 to 2.5 kgf•m)

Charge port| 14 to 18 N•m

(1.4 to 1.8 kgf•m)

Replenishing refrigerant
This model is a 30 m chargeless type that does not need to have its refrigerant replenished for refrigerant pipes up to 30 m. When a refrigerant pipe longer than 30 m is used, add the specified amount of refrigerant.

Refrigerant replenishing procedure

1. After vacuuming the refrigerant pipe, close thevalves and then charge the refrigerant while the air conditioner is not working.
2. When the refrigerant cannot be charged to the specified amount, charge the required amount of refrigerant from the charge port of the valve on the gas side during cooling.

Requirement for replenishing refrigerant
Replenish liquid refrigerant. When gaseous refrigerant is replenished, the refrigerant composition varies, which disables normal operation.

Charging additional refrigerant

Formula for calculating the amount of additional refrigerant (Formula will differ depending on the diameter of the liquid connecting side pipe.) S1 to S3 are the lengths of the pipes shown in the figures above (unit: m).

Single

Diameter of connecting pipe (liquid side)| Amount of additional refrigerant per meter (g/m)|

Amount of additional refrigerant (g) = Amount of refrigerant charged for main pipe

---|---|---
S| a
Ø9.5| 35| a × (S–30)

Simultaneous twin

Outdoor unit

|

Diameter of connecting pipe (liquid side)

| Amount of additional refrigerant per meter (g/m)|

Amount of additional refrigerant (g) = Amount of refrigerant charged for main pipe +

amount of refrigerant charged for branch piping

---|---|---|---
S1| S2| S3| a| b
GM110| Ø9.5| Ø6.4| Ø6.4| 35| 20|

a × (ℓ1 – 28) + b × (ℓ2 + ℓ3 – 4)

GM140| Ø9.5| Ø9.5| Ø9.5| 35| 35

Gas leak inspection
Use a leak detector manufactured specially for HFC refrigerant (R32, R410A, R134a, etc.) to perform the R32 gas leak inspection. Leak detectors for conventional HCFC refrigerant (R22, etc.) cannot be used, as the sensitivity drops to  approximately 1/40 when used for HFC refrigerant.

• R32 has a high working pressure, so failure to perform the installation work properly may result in gas leaks such as when the pressure rises during operation. Be sure to perform leak tests on the piping connections.

Insulating the Pipes

• The temperatures at both the liquid side and gas side will be low during cooling so in order to prevent condensation, be sure to insulate the pipes at both of these sides.
• Insulate the pipes separately for the liquid side and gas side.
• Insulate the branch pipes by following the instructions in the Installation Manual provided with the branch pipe kit.

REQUIREMENT
Be sure to use an insulating material which can withstand temperatures above 120°C for the gas side pipe since this pipe will become very hot during heating operations.

Electrical work

WARNING

1. Using the specified wires, ensure that the wires are connected, and fix wires securely so that the external tension to the wires does not affect the connecting part of the terminals. Incomplete connection or fixation may cause a fire, etc.
2. Be sure to connect the earth wire. Incomplete earthing may lead to electric shock. Do not connect earth wires to gas pipes, water pipes, lightning rods or earth wires for telephone wires.
3. The appliance shall be installed in accordance with national wiring regulations. Capacity shortages of the power circuit or an incomplete installation may cause an electric shock of fire.

Wiring between Indoor Unit and Outdoor Unit

The dashed lines show on-site wiring

For the air conditioner, connect a power wire with the following specifications.

380 V 3N~, 60 Hz

Maximum running current| 14.10 A
Installation fuse rating| 20 A (all types can be used)
Power supply wire| H07 RN- or 60245 IEC 66

(5 x 2.5 mm2 or more)

Indoor / Outdoor connecting wires| H07 RN- or 60245 IEC 66

(4 x 1.5 mm2 or more)

How to wire

1. Remove the mounting screws (2 pieces), open the electrical control box cover.
2. Connect the power supply wires and Indoor / Outdoor connecting wires to the terminal block of the electrical control box.
3. Tighten the screws of the terminal block, connect the wires matching the terminal numbers (Do not apply tension to the connecting section of the terminal block.) 4. Close the electrical control box cover, attach the mounting screws.

• When connecting the Indoor / Outdoor connecting wires to the outdoor unit terminal, prevent water from coming into the outdoor unit.
• Indoor / Outdoor connecting wires, do not use a wire joined to another on the way. Use wires long enough to cover the entire length.

Stripping length power cord and connecting wire

Wiring diagram

• For details on the remote controller wiring / installation, refer to the Installation Manual enclosed with the remote controller.

Single system

Simultaneous twin system

• Use 2-core shield wire (MVVS 0.5 to 2.0 mm² or more) for the remote controller wiring in the simultaneous twin system to prevent noise problems. Be sure to connect both ends of the shield wire to earth leads.
• Connect earth wires for each indoor unit in the simultaneous twin system.

Earthing

WARNING

• Be sure to connect the earth wire.
• Incomplete earthing may cause an electric shock.
• Connect the earth wire properly following applicable technical standards.
• Connecting the earth wire is essential to preventing electric shock and to reducing noise and electrical charges on the outdoor unit surface due to the high-frequency wave generated by the frequency converter (inverter) in the outdoor unit.
• If you touch the charged outdoor unit without an earth wire, you may experience an electric shock.

Finishing
After the refrigerant pipe, inter-unit wires, and drain pipe have been connected, cover them with finishing tape and clamp them to the wall with off- the-shelf support brackets or their equivalent. Keep the power wires and Indoor / Outdoor connecting wires off the valve on the gas side or pipes that have no heat insulator.

Test run

• Turn on the leakage breaker at least 12 hours before starting a test run to protect the compressor during startup. To protect the compressor, power is supplied from the 380-415 VAC input to the unit to preheat the compressor.
• Check the following before starting a test run:
• That all pipes are connected securely without leaks.
• That the valve is open.
• If the compressor is operated with the valve closed, the outdoor unit will become overpressurized, which may damage the compressor or other components.
• If there is a leak at a connection, air can be sucked in and the internal pressure further increases, which may cause a burst or injury.
• Operate the air conditioner in the correct procedure as specified in the Owner’s Manual.

Annual maintenance
For an air conditioning system that is operated on a regular basis, cleaning and maintenance of the indoor / outdoor units are strongly recommended. As a general rule, if an indoor unit is operated for about 8 hours daily, the indoor / outdoor units will need to be cleaned at least once every 3 months. This cleaning and maintenance should be carried out by a qualified service person. Failure to clean the indoor / outdoor units regularly will result in poor performance, icing, water leaking and even compressor failure.

Air conditioner operating conditions
For proper performance, operate the air conditioner under the following temperature conditions:

Functions to be implemented locally

• Handling existing pipe

When using the existing pipe, carefully check for the following:

• Wall thickness (within the specified range)
• Scratches and dents
• Water, oil, dirt, or dust in the pipe
• Flare looseness and leakage from welds
• Deterioration of copper pipe and heat insulator

Cautions for using existing pipe

• Do not reuse a flare nut to prevent gas leaks. Replace it with the supplied flare nut and then process it to a flare.
• Blow nitrogen gas or use an appropriate means to keep the inside of the pipe clean. If discolored oil or much residue is discharged, wash the pipe.
• Check welds, if any, on the pipe for gas leaks.

When the pipe corresponds to any of the following, do not use it. Install a new pipe instead.

• The pipe has been opened (disconnected from indoor unit or outdoor unit) for a long period.
• The pipe has been connected to an outdoor unit that does not use refrigerant R 2, R410A.
• The existing pipe must have a wall thickness equal to or larger than the following thicknesses.

Do not use any pipe with a wall thickness less than these thicknesses due to insufficient pressure capacity.

Refrigerant recovery
WARNING

• Don’t admit air into refrigerant during recovery.
  Otherwise, the pressure in the freezing cycle might increase abnormally. Serious injury could occur if it bursts.

[Recovering the refrigerant]

• You need to recover the refrigerant when moving or repairing the indoor and/or outdoor units. You cannot do this while the air conditioner is running in cooling mode because a protective device will be tripped. Be sure to recover the refrigerant in test run mode.
• Use a refrigerant recovery device when the amount of refrigerant to be recovered exceeds the initial amount of 2.1 kg.

Instructions (Recovery to the Air Conditioner)

1. Power on the air conditioner.
2. To set the air conditioner to test run mode, hold down the Temporary button for more than 10 seconds. Then, you will hear a “Pi” sound, and the light (green), light (green) and light (orange) lamps will blink quickly to indicate that the air conditioner has gone into a test run mode.
3. Wait for one minute to elapse, and then close the valve of liquid side.
4. It is recommended to attach a pressure gauge at the service port so that you can determine when refrigerant recovery has been completed.
5. Upon completion, close the valve of gas side.
6. Stop the air conditioner.
7. Power off the air conditioner.
   • Complete Steps 2 to 6 within fi ve minutes. Otherwise, the protective device might trip, causing the outdoor unit to stop.
   • If the recovery operation has been interrupted by the protective device, turn off the air conditioner. In this case, use a refrigerant recovery device.

Existing piping
The following settings are required when using a pipe Ø19.1 mm as the existing piping at the gas pipe side.

Steps taken to support existing piping

1. Cut J805 (Jumper).
2. Set the circuit breaker to the ON position to turn on the power.

Troubleshooting

You can perform fault diagnosis of the outdoor unit with the LEDs on the P.C board of the outdoor unit in addition to using the check codes displayed on the wired remote controller of the indoor unit. Use the LEDs and check codes for various checks. Details of the check codes displayed on the wired remote controller of the indoor unit are described in the Installation Manual of the indoor unit.

LED displays and check codes

The LEDs are located at the top right of the P.C. board of the outdoor unit as shown in the figure below.

Appendix

Existing piping

Work instructions
The existing R22 and R410A piping can be reused for our digital inverter R32 product installations.

WARNING
Confirming the existence of scratches or dents on the existing pipes and confirming the reliability of the pipe strength are conventionally referred to the local site. If the specified conditions can be cleared, it is possible to update existing R22 and R410A pipes to those for R32 models.

Basic conditions needed to reuse existing pipes

Check and observe the presence of three conditions in the refrigerant piping works.

1. Dry (There is no moisture inside of the pipes.)
2. Clean (There is no dust inside of the pipes.)
3. Tight (There are no refrigerant leaks.)

Restrictions for use of existing pipes
In the following cases, the existing pipes should not be reused as they are. Clean the existing pipes or exchange them with new pipes.

1. When a scratch or dent is heavy, be sure to use new pipes for the refrigerant piping works.
2. When the existing pipe thickness is thinner than the specified “Pipe diameter and thickness,” be sure to use new pipes for the refrigerant piping works.
   Pipe diameter and thickness (mm)**** Pipe outer diameter| Ø6.4| Ø9.5| Ø12.7| Ø15.9| Ø19.0
   ---|---|---|---|---|---

Thickness

| R32/ R410A|

0.8

|

0.8

|

0.8

|

1.0

|

1.0

R22
3. When the outdoor unit was left with the pipes disconnected, or the gas leaked from the pipes and the pipes were not repaired and refilled.

• There is the possibility of rain water or air, including moisture, entering the pipe.

4. When refrigerant cannot be recovered using a refrigerant recovery unit.
   • There is the possibility that a large quantity of dirty oil or moisture remains inside the pipes.
5. When a commercially available dryer is attached to the existing pipes.
   • There is the possibility that copper green rust has been generated.
6. When the existing air conditioner is removed after refrigerant has been recovered. Check if the oil is judged to be clearly different from normal oil.
   • The refrigerator oil is copper rust green in color: There is the possibility that moisture has mixed with the oil and rust has been generated inside the pipe.
   • There is discolored oil, a large quantity of residue, or a bad smell.
   • A large quantity of shiny metal dust or other wear residue can be seen in the refrigerant oil.
7. When the air conditioner has a history of the compressor failing and being replaced.
   • When discolored oil, a large quantity of residue, shiny metal dust, or other wear residue or mixture of foreign matter is observed, trouble will occur.
8. When temporary installation and removal of the air conditioner are repeated such as when leased etc.
9. If the type of refrigerator oil of the existing air conditioner is other than the following oil (Mineral oil), Suniso, Freol-S, MS (Synthetic oil), alkyl benzene (HAB, Barrel-freeze), ester series, PVE only of ether series.
   • The winding-insulation of the compressor may deteriorate.

NOTE: The above descriptions are results have been confirmed by our company and represent our views on our air conditioners, but do not guarantee the use of the existing pipes of air conditioners that have adopted R in other companies.

Branching pipe for simultaneous operation system

In the concurrent twin system, when TOSHIBA has specified that branching pipe is to be used, it can be reused.

Branching pipe model name:

• RBC-TWP30E2, RBC-TWP50E2
• On the existing air conditioner for simultaneous operation system (twin, triple system), there are cases of branch pipes being used that have insufficient compressive strength.
• In such case, please change the piping to a branch pipe for R32/R410A.

Curing of pipes
When removing and opening the indoor or outdoor unit for a long time, cure the pipes as follows:

• Otherwise rust may be generated when moisture or foreign matter due to condensation enters the pipes.
• The rust cannot be removed by cleaning, and new pipes are necessary

Outdoors

| 1 month or more| Pinching
Less than 1 month|

Pinching or taping

Indoors| Every time

Minimum floor area : Amin (m2)

 | Total refrigerant quantity*| Floor standing unit| Wall mounted unit| Ceiling mounted unit
---|---|---|---|---
h0| 0.6| 1.8| 2.2
M (kg)| A min (m 2 )

4HP

5HP

| 2.100| 37.840| 4.204| 2.815
2.135| 39.112| 4.346| 2.909
2.170| 40.405| 4.489| 3.005
2.205| 41.719| 4.635| 3.103
2.240| 43.054| 4.784| 3.202
2.275| 44.410| 4.934| 3.303
2.310| 45.787| 5.087| 3.406
2.345| 47.185| 5.243| 3.510
2.380| 48.604| 5.400| 3.615
2.415| 50.044| 5.560| 3.722
2.450| 51.505| 5.723| 3.831
2.485| 52.987| 5.887| 3.941
2.520| 54.490| 6.054| 4.053
2.555| 56.014| 6.224| 4.166
2.590| 57.559| 6.395| 4.281
2.625| 59.125| 6.569| 4.398
2.660| 60.712| 6.746| 4.516
2.695| 62.321| 6.925| 4.635
2.730| 63.950| 7.106| 4.757
2.765| 65.600| 7.289| 4.879
Max.    2.800| 67.271| 7.475| 5.004

Total refrigerant quantity: Refrigerant quantity pre-charged at factory + Additional refrigerant quantity charged during installation.

Specifications

Model

| Sound power level (dBA)|

Weight (kg)

---|---|---
Cooling| Heating
RAV-GM1101AT8P-E| | 74| 66
RAV-GM1101AT8JP-E| | 74| 66
RAV-GM1401AT8P-E| | 74| 66
RAV-GM1401AT8JP-E| | 74| 66

Product information of ecodesign requirements, (Regulation (EU) 2016/2281) http://ecodesign.toshiba-airconditioning.eu/en

Declaration of conformity
Manufacturer: Toshiba Carrier (Thailand) Co., Ltd. 144 / 9 Moo 5, Bangkadi Industrial Park, Tivanon Road, Tambol Bangkadi, Amphur Muang, Pathumthani 12000, Thailand

NOTE: This declaration becomes invalid if technical or operational modifications are introduced without the manufacturer’s consent.

To Fix the Fluorinated Greenhouse Gases Label

This product contains fluorinated greenhouse gases. Do not vent gases into the atmosphere:

Contains fluorinated greenhouse gases

   Chemical Name of Gas| R32
   Global Warming Potential (GWP) of Gas| 675

CAUTION

1. Stick the enclosed refrigerant label adjacent to the service ports for charging or recovering location and where possible adjacent to existing nameplates or product information label.
2. Clearly write the charged refrigerant quantity on the refrigerant label using indelible ink. Then, place the included transparent protective sheet over the label to prevent the writing from rubbing off.
3. Prevent emission of the contained fluorinated greenhouse gas. Ensure that the fluorinated greenhouse gas is never vented to the atmosphereduring installation, service or disposal. When any leakage of the contained fluorinated greenhouse gas is detected, the leak shall be stopped and repaired as soon as possible.
4. Only qualified service personnel are allowed to access and service this product.
5. Any handling of the fluorinated greenhouse gas in this product, such as when moving the product or recharging the gas, shall comply under (EU) Regulation No.517/2014 on certain fluorinated greenhouse gases and any relevant local legislation.
6. Periodical inspections for refrigerant leaks may be required depending on European or local legislation.
7. Contact dealers, installers, etc., for any questions.

Fill in the label as follows:

Warnings on refrigerant leakage

Check of concentration limit
The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its concentration will not exceed a set limit. The refrigerant R32 wh ich is used in the air conditioner is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws to be imposed which protect the ozone layer. However, since it contains more than air, it poses the risk of suffocation if its concentration should rise excessively. Suffocation from leakage of R is almost non-existent.

If a conditioner system is to be installed in a small room, select a suitable model and installation procedure so that if the refrigerant accidentally leaks out, its concentration does not reach the limit (and in the event of an emergency, measures can be made before injury can occur). In a room where the concentration may exceed the limit, create an opening with adjacent rooms, or install mechanical ventilation combined with a gas leak detection device.

144 / 9 Moo 5, Bangkadi Industrial Park, Tivanon Road, Tambol Bangkadi, Amphur Muang, Pathumthani 12000, Thailand.

References

• ecodesign.toshiba-airconditioning.eu/en
• Toshiba Carrier | Manuals Download

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