Page 2 - Contents; ADOPTION OF NEW REFRIGERANT
– 1 – Under Ceiling Type Installation Manual Toshiba Contents 1 ACCESSORY PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 PRECAUTIONS FOR SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3...
Page 3 - ACCESSORY PARTS; Accessory parts
– 2 – Under Ceiling Type Installation Manual EN Toshiba 1 ACCESSORY PARTS Accessory parts Part name Q’ty Shape Usage Owner’s Manual 1 – – Installation Manual 1 This manual – Installation pattern 1 – Drawing-out port of hanging bolt pipe Thermal insulation pipe 2 For thermal insulation of pipe conn...
Page 4 - PRECAUTIONS FOR SAFETY; WARNING
– 3 – Under Ceiling Type Installation Manual Toshiba 2 PRECAUTIONS FOR SAFETY Installing, starting up, and servicing air--conditioning equipment can be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.).Only trained, qualified installe...
Page 5 - CAUTION
– 4 – Under Ceiling Type Installation Manual EN Toshiba • Conform to the regulations of the local electric company when wiring the power supply. Inappropriate grounding may cause electric shock. • For the refrigerant recovery work (collection of refrigerant from the pipe to the compressor), stop the...
Page 6 - SELECTION OF INSTALLATION PLACE; Upon approval of the customer, install the air; Avoid installing in the following places.; Installation space
– 5 – Under Ceiling Type Installation Manual Toshiba 3 SELECTION OF INSTALLATION PLACE WARNING • Install the air conditioner at enough strong place to withstand the weight of the unit. If the strength is not enough, the unit may fall down resulting in injury. • Install the air conditioner at a heigh...
Page 7 - Wireless remote control; Before installation; Removal of suction grille
– 6 – Under Ceiling Type Installation Manual EN Toshiba Wireless remote control Decide the position which remote control is operated and the installation place.And then refer to the Installation Manual of the wireless remote controller kit sold separately.(The signal of the wireless type remote co...
Page 8 - Removal of side panel; Removal of protector; External view
– 7 – Under Ceiling Type Installation Manual Toshiba 3 Removal of side panel After removing the side panel fixing screws (1 each at right and left), slide the side panel forward and then remove it. 4 Removal of protective vinyl Peel out the protective vinyl on the level louver. 5 Removal of protecto...
Page 10 - Installation of hanging bolts
– 9 – Under Ceiling Type Installation Manual Toshiba Using attached installation pattern Using the pattern, positioning of the hanging bolt and pipe hole can be performed.* As an error to some degree may generate on the pattern size due to temperature and humidity, be sure to confirm the size. Ins...
Page 11 - Installation of indoor unit; There is ceiling material
– 10 – Under Ceiling Type Installation Manual EN Toshiba Installation of indoor unit • Preparation before holding down main unit * Confirm the presence of the ceiling material beforehand because the fixing method of hanging metal when the ceiling material is set differs from that when the ceiling ...
Page 12 - REFRIGERANT PIPING AND EVACUATING; Refrigerant Piping; Pipe size; Flaring
– 11 – Under Ceiling Type Installation Manual Toshiba 4 REFRIGERANT PIPING AND EVACUATING Refrigerant Piping • The connecting sections of the refrigerant pipes are provided at the positions in the figure below. 1. Use copper pipe with 0.03” (0.8 mm) or more thickness.(In case pipe size is Ø5/8” (1...
Page 13 - Tightening connection; Tightening torque of flare pipe connections; Piping with outdoor unit; Evacuation; Refrigerant amount to be added; Open the valve fully
– 12 – Under Ceiling Type Installation Manual EN Toshiba Tightening connection CAUTION • Do not apply excessive torque. Otherwise, the nut may crack depending on the conditions. ▼ Tightening torque of flare pipe connections Pressure of R410A is higher than that of R22.(Approx. 1.6 times) Therefore, ...
Page 14 - Thermal insulation process
– 13 – Under Ceiling Type Installation Manual Toshiba Thermal insulation process Apply thermal insulation for the pipes separately at liquid side and gas side.For the thermal insulation to the pipes at gas side, be sure to use the material with heat-resisting temperature 248 °F (120 °C) or higher.Us...
Page 15 - DRAIN PIPING WORK; Drain up
– 14 – Under Ceiling Type Installation Manual EN Toshiba 5 DRAIN PIPING WORK CAUTION • Following the Installation Manual, perform the drain piping work so that water is properly drained, and apply a heat insulation so as not to cause a dew dropping.Inappropriate piping work may result in water leaka...
Page 16 - Connection of drain hose; Thermal insulating process
– 15 – Under Ceiling Type Installation Manual Toshiba Connection of drain hose • Insert the attached drain hose into the drain pipe connecting port on the drain pan up to the end. • Fit the attached hose band to the end of the pipe connecting port, and then tighten it securely. REQUIREMENT • Be su...
Page 17 - ELECTRICAL CONNECTION; Remote control wiring
– 16 – Under Ceiling Type Installation Manual EN Toshiba 6 ELECTRICAL CONNECTION WARNING 1. Using the specified wires, ensure to connect the wires, and fix wires securely so that the external tension to the wires do not affect the connecting part of the terminals. Incomplete connection or fixation m...
Page 19 - Wire connection
– 18 – Under Ceiling Type Installation Manual EN Toshiba Wire connection REQUIREMENT • Be sure to connect the wires matching the terminal numbers. Incorrect connection causes a trouble.• The low-voltage circuit is provided for the remote control. (Do not connect the high-voltage circuit) • Loosen ...
Page 20 - Connected at backside
– 19 – Under Ceiling Type Installation Manual Toshiba CAUTION Fix the system interconnection wires and the remote control wires separately with the cord clamps as shown below. Connected at backside Connected at upside Cord clamp Cord clamp Conduit pipe Conduit hole for system interconnection wires H...
Page 21 - Remote Control Wiring; Wiring Diagram; Single system
– 20 – Under Ceiling Type Installation Manual EN Toshiba System interconnection Wires and Ground Wire 1. Strip wire ends. System interconnection wire : 0.4” (10 mm).Ground wire : 0.8” (20 mm) 2. Match wire colours with terminal numbers on indoor and outdoor units’ terminal blocks and firmly screw ...
Page 22 - APPLICABLE CONTROLS; Procedure
– 21 – Under Ceiling Type Installation Manual Toshiba 7 APPLICABLE CONTROLS REQUIREMENT • When you use this air conditioner for the first time, it takes approx. 5 minutes until the remote control becomes available after power-on. This is normal. <When power is turned on for the first time after i...
Page 23 - Installation to high ceiling
– 22 – Under Ceiling Type Installation Manual EN Toshiba Procedure 5 Push button. In this time, if the display changes from flashing to lighting, the setup completes.• To change the setup of an indoor unit other than the selected one, start operation from Procedure 2 . • To change the setup of anoth...
Page 24 - Filter sign setting; Group control for system of multiple units; Group control in single system; Procedure example 1
– 23 – Under Ceiling Type Installation Manual Toshiba Filter sign setting According to the installation condition, the lighting time of the filter sign (Notification of filter cleaning) can be changed.Follow to the basic operation procedure( 1 → 2 → 3 → 4 → 5 → 6 ). • For the CODE No. in Procedure...
Page 28 - TEST RUN; Before test run; Wired remote control
– 27 – Under Ceiling Type Installation Manual Toshiba 8 TEST RUN Before test run • Before turning on the circuit breaker, carry out the following procedure.1) Using 500V-megger, check 1M Ω or more exists between the terminal block L 1 to L 2 and the ground.If 1M Ω or less is detected, do not run t...
Page 30 - TROUBLESHOOTING; Confirmation and check
– 29 – Under Ceiling Type Installation Manual Toshiba 9 TROUBLESHOOTING Confirmation and check When a trouble occurred in the air conditioner, the check code and the indoor UNIT No. appear on the display part of the remote control.The check code is only displayed during the operation.If the displa...
Page 31 - Check codes and parts to be checked
– 30 – Under Ceiling Type Installation Manual EN Toshiba Check codes and parts to be checked Wired remote control display Wireless remote control Sensor block display of receiving unit Main defective parts Judging device Parts to be checked / error description Air conditioner status Indication Ope...
