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AXAP 22-71 PAD Always read before installation. Aisin INDOOR UNITS INSTALLATION AND MAINTENANCE INSTRUCTIONS [ Model ] Wall-mounted Type Applicable models AXAP22PAD AXAP45PAD AXAP28PAD AXAP56PAD AXAP36PAD AXAP71PAD Important reminder - THOROUGHLY READ THESE INSTRUCTIONS BEFORE STARTING THE INSTALLATION AND FOLLOW ALL PROCEDURES DESCRIBED WITHIN.
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AXAP22PAD AXAP45PAD Installation AXAP28PAD AXAP56PAD Gas driven heat pumps air conditioners manual AXAP71PAD AXAP36PAD CONTENTS SAFETY PRECAUTIONS....................1 BEFORE INSTALLATION ....................2 SELECTING INSTALLATION SITE................5 INDOOR UNIT INSTALLATION ..................6 REFRIGERANT PIPING WORK ..................9 DRAIN PIPING WORK ....................12 ELECTRIC WIRING WORK ..................13 HOW TO CONNECT WIRINGS AND WIRING EXAMPLE ...........14 FIELD SETTINGS ......................19 TEST OPERATION ......................20 1.
• Make sure that a separate power supply circuit is provided for this unit and that all electrical work is carried out by qualified personnel according to local laws and regulations and this installation manual. An insufficient power supply capacity or improper electrical construction may lead to electric shocks or fire. •...
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2-1 PRECAUTIONS • Be sure to read this manual before installing the indoor unit. • When selecting installation site, refer to the installation pattern. • This unit, both indoor and outdoor, is suitable for installation in a commercial and light industrial environment.
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FOR THE FOLLOWING ITEMS, TAKE SPECIAL CARE DURING CONSTRUCTION AND CHECK AFTER INSTALLATION IS FINISHED. a. Items to be checked after completion of work Items to be checked If not properly done, what is likely to occur Check Are the indoor and outdoor unit fixed The units may drop, vibrate or make noise.
3. SELECTING INSTALLATION SITE (1) Select an installation site where the following conditions are fulfilled and that meets with your customer's approval. • In the upper space (including the back of the ceiling) of the indoor unit where there is no possible •...
4. INDOOR UNIT INSTALLATION • Use only accessories and parts which are of the designated specification when installing. CAUTION • Install so that the unit does not tilt to either side or forward. • Do not hold the unit by the horizontal flaps when lifting it. (This may damage the horizontal flaps.) (1) Open the piping through-hole.
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(3) Remove the screw from the service lid and pull the handle forward. Front panel Axis Service lid Axis Service lid Axis Axis Handle Axis Screw Fig. 5 Fig.5 (5) Point the pipe in the direction it will be passed out. For right, bottom-right, and back-right piping (Refer to Fig.
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Drain plug Insulating tube Do not place lubricant (refrigerant oil) when inserting. Make sure This may cause deterioration and water leaks. there are no gaps. Insert using a hexagon wrench (4mm). Fig. 8 (6) Hook the indoor unit onto the installation panel. (Refer to Fig. 9) •...
• To avoid the influence of noise from the power supply line on the transmission wiring and the remote controller wiring, these wirings must be kept as far as possible from the power/ground wirings. As shown in the figure, keep the power supply wiring and the ground wiring together. Keep the transmission and remote con- troller wirings together and route them maintaining a good distance from the power supply/ground wirings (that is, on the other side of the power supply/ground wirings).
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• Be sure to use both a spanner and torque wrench together, as shown Torque wrench in the drawing, when connecting or disconnecting pipes to/from the unit. (Refer to Fig. 12) • Refer to "Table 1" for the dimensions of flare nut spaces. •...
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• Before brazing local refrigerant piping, nitrogen gas shall be blown through the piping to expel air from the piping. If your brazing is done without nitrogen gas blowing, a large amount of oxide film develops inside the piping, and could cause system malfunction.
6. DRAIN PIPING WORK (1) Install the drain piping. (Refer to Fig. 16) • • The drain pipe should be short with a downward slope and should prevent air pockets from forming. Watch out for the points in the Fig. 16 when performing drain work. Make sure the drain Drain hose Drain hose...
7. ELECTRIC WIRING WORK 7-1 GENERAL INSTRUCTIONS • All field supplied parts and materials and electric works must conform to local codes. • Use copper wire only. • For electric wiring work, refer to also "WIRING DIAGRAM" attached to the unit body. •...
CAUTION • Arrange the wires and fix a lid firmly so that the lid does not float during wiring work. • Do not clamp remote controller wiring and transmission wiring together with power supply wiring. Doing so may cause malfunction. •...
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Precautions to be taken for power supply wiring Use a round crimp-style terminal for connection to the power supply terminal block. In case it cannot be used due to unavoidable reasons, be sure to observe the following instructions. Be sure to peel off the sheath of power supply wiring more than 40 mm. (Refer to Fig. 20) Attach insulation sleeve Round crimp-style terminal Power supply wiring and ground wire...
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CAUTION • Be sure to attach the sealing material and putty (field supplied) to hole of wiring to prevent the infiltration of water as well as any insects and other small creatures from outside. Otherwise a short-circuit may occur inside the control box.
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2. For group control or use with 2 remote controllers Power supply Outdoor unit Note: It is not necessary to designate indoor unit 220-240V address when using group control. Control box IN/D OUT/D 50Hz The address is automatically set when power is No.
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8-3 CONTROL BY 2 REMOTE CONTROLLERS (CONTROLLING 1 INDOOR UNIT BY 2 REMOTE CONTROLLERS) • When using 2 remote controllers, one must be set to "MAIN" and the other to "SUB". MAIN/SUB CHANGEOVER (1) Insert a screwdriver into the recess between the Upper part of upper and lower part of remote controller and, remote controller...
9. FIELD SETTINGS CAUTION When performing field setting or test operation without attaching the decoration panel, do not touch the drain pump. This may cause electric shock. (1) Make sure the service lids are closed on the indoor and outdoor units. •...
10. TEST OPERATION Make sure the service lids are closed on the indoor and outdoor units. Refer to the installation manual of the outdoor unit. • The operation lamp of the remote controller will flash when an malfunction occurs. Check the malfunction code on the liquid crystal display to identify the point of trouble.
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