User manual TOSHIBA BDX4400

[. . . ] If an incomplete installation is performed, a fire, electric shock, injury, or water leakage may be caused. Be sure to use the products sold separately which are specified by us. For the products sold separately, be sure to use those specified by us. For installation work, leave it to special engineer. When installing the units in a small room, take measures so that the refrigerant will not exceed the critical concentration if it leaks. CAUTION Related to countermeasures against the critical concentration, perform the installation work upon consultation with the dealer. If the refrigerant leaks and exceeds the critical concentration, oxygen deficiency may be caused. Check whether earthing work is performed correctly. A grounding is necessary. If the earthing work is incompletely, an electric shock may be caused. [. . . ] (Re-tightening of the valve rods are unnecessary for valves at discharge gas side because they are ball valves. ) · For each refrigerant line, apply pressure gradually with steps at liquid side, discharge gas side, and suction gas side. Be sure to apply pressure to suction gas side, discharge gas side, and liquid side. REQUIREMENT Never use "Oxygen", "Flammable gas" and "Noxious gas" in an airtight test. LowHighpressure pressure gauge gauge VL VH Gauge manifold Connected to indoor unit Main pipe Packed valve fully closed (Suction gas side) Outdoor unit Detailed drawing of packed valve Suction gas side service port To gauge manifold Discharge gas side service port Discharge gas side ball valve Liquid side service port Liquid side packed valve To outdoor unit Piping at site To outdoor unit Piping at site Suction gas side packed valve Brazed Service port Fully closed Service port Ø6. 4 Copper pipe Reducing valve To outdoor unit Fully closed Piping at site Ø6. 4 Copper pipe Nitrogen gas Ball valve fully closed (Discharge gas side) Packed valve fully closed (Liquid side) STEP 1 : Apply pressure 0. 3MPa (3. 0kg/cm2G) for 3 minutes or more. Available to detect a gross leakage STEP 2 : Apply pressure 1. 5MPa (15kg/cm2G) for 3 minutes or more. between when pressure has been applied and when 24 hours passed, pressure changes by approx. Leaked position check When a pressure-down is detected in STEP 1, STEP 2, or STEP 3, check the leakage at the connecting points. Check leakage with hearing sense, feeler, foaming agent, etc, and perform re-brazing or re-tightening of flare if leakage is detected. 38 Outdoor Unit / INSTALLATION MANUAL [ VOLUME-1 ] 5 REFRIGERANT PIPING Air purge For the air purge at installation time (Discharge of air in connecting pipes), use "Vacuum pump method" from viewpoint of protection of earth environment. · For protection of earth environment, do not discharge the flon gas in the air. · Using a vacuum pump, eliminate the remained air (nitrogen gas, etc. ) in the unit. Then connect the gauge manifold to the service ports at suction gas side, discharge gas side and liquid side, and connect the vacuum pump as shown in the following figure. Be sure to perform vacuuming for suction gas side, discharge gas side and liquid side. · Be sure to perform vacuuming from both suction gas side, discharge gas side and liquid side. · Be sure to use a vacuum pump with counter-flow preventive function so that oil in the pump does not back up in the pipe of the air conditioner while the pump stops. · In case of drawing-out the pipes downward or sideward direction, also close the openings of the base plate and the side plate. · Under the opened condition, a trouble may be caused due to entering of water or dust. In case of using pipe cover In case of using no pipe cover Piping/wiring panel Piping/wiring panel Drawing-out sideward Drawing-out sideward Drawing-out frontward Close the opening with pipe cover. Drawing-out downward Drawing-out frontward Fill silicon or putty in periphery of the pipes. Drawing-out downward 41 Outdoor Unit / INSTALLATION MANUAL [ VOLUME-2 ] 6 ELECTRIC WIRING WARNING Using the exclusive circuit, a person qualified for electrician shall work for the electric work in conformance with the regulations of the local electric company and the Installation Manual. If there is capacity shortage of the power circuit or incomplete electric work, a fire or electric shock is caused. For wiring, use the specified wires and connect them securely so that external force of wire does not transmit to the terminal connecting section. If connection or fixing is incomplete, a fire is caused. Be sure to connect the earth wire. Grounding work is necessary based upon a law. Do not connect earth wire to gas pipe, lightning rod, or earth wire of telephone. CAUTION Be sure to attach an earth leakage breaker; otherwise an electric shock may be caused. 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. REQUIREMENT · Perform wiring of the power supply in conformance with the regulations of the local electric company. · For wiring of power supply in the indoor unit, refer to the Installation Manual of each indoor unit. · Never connect the 220­240V power to the terminal block (U1, U2, U3, U4, U5, U6) for control wires. (Trouble is caused. ) · Arrange the wires so that the electric wires do not come to contact with high-temperature part of the pipe; otherwise coating melts and an accident may be caused. · After connecting wire to the terminal block, take off the trap and then fix the cable with wire clamp. · Store wiring system for control and refrigerant piping system in the same line. · Do not turn on power of the indoor unit until vacuuming of the refrigerant pipe will finish. [. . . ] · Be sure to put wires through the wire connecting ports on the Flow Selector unit and the indoor unit. Connection diagram · Power is supplied from the connected indoor unit. · Connect the attached wires (power supply / control wiring) between the Flow Selector unit and the indoor unit. · If the distance between indoor unit and FS unit exceeds 5m, connect by using the extension cable kit (RBC-CBK15FE). (Sold separately) Flow Selector Unit RBM-Y1801FEOnly Earth screw Indoor Unit Attached wire (Power Supply) SVD SVS SVS SVSS SVDD 1 1 3 3 1 1 3 3 5 5 7 7 9 9 11 CN01 (RED) COM SVD SVS SVDD SVSS BRW BLU YEL WHI ORN CN10 (WHI) Control P. C. [. . . ]