Toshiba RAV-SM2244AT7 Installation Manual
Split type outdoor unit
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- Installation manual (625 pages) ,
- Service manual (133 pages) ,
- Data book (44 pages)
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Table of Contents
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Summary of Contents for Toshiba RAV-SM2244AT7
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Page 1: Installation Manual
AIR CONDITIONER (SPLIT TYPE) Installation manual Outdoor Unit Model name: RAV-SM2244AT7 RAV-SM2804AT7 RAV-SM2244AT7Z RAV-SM2804AT7Z RAV-SM2244AT7ZG RAV-SM2804AT7ZG RAV-SM2244AT8-E RAV-SM2804AT8-E RAV-SM2244AT8Z-E RAV-SM2804AT8Z-E RAV-SM2244AT8ZG-E RAV-SM2804AT8ZG-E English... -
Page 2: Table Of Contents
Digital Inverter Please read this Installation Manual carefully before installing the Air Conditioner. • This Manual describes the installation method of the outdoor unit. • For installation of the indoor unit, follow the Installation Manual attached to the indoor unit. ADOPTION OF NEW REFRIGERANT This Air Conditioner is a new type that has adopted a new refrigerant HFC (R410A) instead of the conventional refrigerant R22 in order to prevent destruction of the ozone layer. -
Page 3: Accessory Parts
Digital Inverter ACCESSORY PARTS Accessory Parts Part name Q’ty Shape Usage Installation manual (Hand this directly to the customer.) Drain nipple Waterproof rubber cap Protective bush For protecting wires (pipe cover) Guard material for passage part For protecting passage part (pipe cover) For conforming to EMC standards Clamp filter (Used for power wire) -
Page 4: Safety Precautions
Digital Inverter SAFETY PRECAUTIONS • Ensure that all Local, National and International regulations are satisfied. • Read these “SAFETY PRECAUTIONS” carefully before installation. • The precautions described below include important items regarding safety. Observe them without fail. • After the installation work, perform a trial operation to check for any problem. Follow the Owner’s Manual to explain to the customer how to use and maintain the unit. -
Page 5: Installation Of New Refrigerant Air Conditioner
Digital Inverter • Install the refrigerant pipe securely during the installation work before operating the air conditioner. If the compressor is operated with the valve open and without the refrigerant pipe, the compressor sucks air and the refrigeration cycle is overpressurized, which may cause a burst or injury. •... - Page 6 Digital Inverter 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. Legend : Prepared newly (Use for R410A only. Do not use for refrigerant R22 or R407C etc.) : Conventional tools/equipment are available Tools/equipment How to use tools/equipment...
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Page 7: Installation Conditions
Digital Inverter INSTALLATION CONDITIONS Before installation Earthing Be sure to prepare to the following items before installation. WARNING Length of refrigerant pipe Make sure that proper earthing is provided. Improper earthing may cause an electric shock. For details Length of refrigerant pipe on how to check earthing, contact the dealer who installed connected to indoor/ Item... -
Page 8: Installation Location
Digital Inverter Installation Location CAUTION WARNING 1. Install the outdoor unit in a location where the discharge air is not blocked. Install the outdoor unit properly in a location that is 2. When an outdoor unit is installed in a location that is durable enough to support the weight of the outdoor always exposed to strong winds like a coast or on the unit. - Page 9 Digital Inverter Necessary Space for Installation Obstacle in front (Unit: mm) Above unit is free 1. Single unit installation Obstacle at rear side Upper side is free 1. Single unit installation 2. Serial installation of two or more units 2. Obstacles on both right and left sides The height of the obstacle should be lower than the height of...
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Page 10: Installation Of Outdoor Unit
Digital Inverter Serial installation in front and rear NO GOOD Open above and to the right and left of the unit. Do not support the If only the end of the outdoor unit only The height of an obstacle in both the front and rear of the unit fixing leg is supported, with the fixing leg. -
Page 11: Refrigerant Piping
Digital Inverter REFRIGERANT PIPING Knockout of Pipe Cover Optional Installation Parts (Locally procured) Knockout procedure Parts name Q’ty Refrigerant piping Liquid side: Ø12.7 mm One each Gas side: Ø19.1 mm (Approx. 800 mm) Ø28.6 mm Pipe insulating material (polyethylene foam, 10 mm thick) Putty, PVC tape One each REQUIREMENT... - Page 12 Digital Inverter Flaring Connecting the Gas Side Pipe 1. Cut the pipe with a pipe cutter. REQUIREMENT 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 •...
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Page 13: Branch Pipe
Digital Inverter Tightening of Connecting Part • After the installation work, be sure to check for gas leaks of the pipe connections with nitrogen. 1. Align the centers of the connecting pipes and fully tighten • Pressure of R410A is higher than that of R22 (Approx. the flare nut with your fingers. - Page 14 Digital Inverter Refrigerant Pipe Length Simultaneous twin, triple Allowable pipe length (m) Height difference (m) Branch piping Branch piping Indoor-outdoor H Total length Outdoor • 1 + 2 • 2 • 3 – 2 Indoor-indoor unit • 1 + 3 •...
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Page 15: Air Purging
Digital Inverter AIR PURGING Airtight Test Vacuum pump Before starting an airtight test, further tighten the spindle As shown in the figure, connect the charge hose after the valves on the gas side and liquid side. manifold valve is closed completely. Pressurize the pipe with nitrogen gas charged from the service port to the design pressure (4.15 MPa) to conduct the airtight test. -
Page 16: Replenishing Refrigerant
Digital Inverter How to Open the Valve Insulating the Pipes Open or close the valve. • The temperatures at both the liquid side and gas side will be low during cooling so in order to prevent Liquid side condensation, be sure to insulate the pipes at both of Open the valve with a 4 mm hexagon wrench. - Page 17 Digital Inverter Adding additional refrigerant Figure of Simultaneous twin Figure of Simultaneous triple Indoor Unit Indoor Unit Indoor Unit Indoor Unit Indoor Unit Outdoor Unit Outdoor Unit Figure of Simultaneous double twin Indoor Unit Indoor Unit Indoor Unit Indoor Unit Outdoor Unit Formula for calculating the amount of additional refrigerant (Formula will differ depending on the diameter of the liquid connecting side pipe.)
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Page 18: Electrical Work
Digital Inverter ELECTRICAL WORK • When the outdoor air temperature drops, power is WARNING supplied to the compressor with the purpose of preheating the compressor in order to protect it. 1. Using the specified wires, ensure that the wires are Therefore, leave the main power switch at the “on”... -
Page 19: Wiring Diagram
Digital Inverter How to wire Wiring diagram 1. Connect the connecting wire to the terminal as identified For details on the remote controller wiring/installation, with their respective numbers on the terminal block of the refer to the Installation Manual enclosed with the remote indoor and outdoor units. -
Page 20: Earthing
Digital Inverter Stripping length power cord and connecting wire Indoor/outdoor Power supply wire connecting wire L1 L2 L3 N Earth screw Earth screw (mm) Earth line Earth line Connecting wire Power supply wire Cord clamp Cord clamp Clamp filter (accessory) Cord clamp Cord clamp WARNING... -
Page 21: Finishing
Digital Inverter 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 •... -
Page 22: Functions To Be Implemented Locally
Digital Inverter FUNCTIONS TO BE IMPLEMENTED LOCALLY Handling Existing Pipe • When using a Ø19.1 mm gas pipe for the existing piping, set bit 3 of SW802 (switch for existing pipe) on the P.C. When using the existing pipe, carefully check for the board of the outdoor unit to ON. -
Page 23: Troubleshooting
Digital Inverter 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. - Page 24 Digital Inverter Display mode 1 Display mode 2 Cause D800 D801 D802 D803 D804 D800 D801 D802 D803 D804 Normal Discharge (TD) sensor error Heat exchanger (TE) sensor error Heat exchanger (TL) sensor error Outside air temperature (TO) sensor error Suction (TS) sensor error Heat sink (TH) sensor error Outdoor temperature sensor (TE/TS) connection error...
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Page 25: Appendix
Pipe diameter and thickness (mm) Branching pipe for simultaneous operation system Reference outside Wall thickness • In the concurrent twin system, when TOSHIBA has Material diameter (mm) (mm) specified that branching pipe is to be used, it can be reused. - Page 26 Digital Inverter Are there scratches or dents on the existing pipes? Existing pipes: Cannot be used. • Use new pipes. Is it possible to operate the existing air conditioner? • After the existing air conditioner is operated in cooling mode for approx. 30 minutes or longer,* recover the refrigerant.
- Page 27 WARNINGS ON REFRIGERANT LEAKAGE Check of Concentration Limit Important The room in which the air conditioner is to be installed NOTE 2 : requires a design that in the event of refrigerant gas The standards for minimum room volume are as follows. leaking out, its concentration will not exceed a set (1) No partition (shaded portion) limit.