VRF SYSTEM IR RECEIVER UNIT UTB- INSTALLATION MANUAL For authorized service personnel only. Contents 1. SAFETY PRECAUTIONS ..........2 2. MAIN UNIT AND ACCESSORIES ......... 3 3. OPTIONAL PARTS ............3 4. FUNCTIONS AND DIMENSION ........3 5. SELECTING THE INSTALLATION LOCATION .... 3 6.
1. SAFETY PRECAUTIONS • Do not operate this unit when your hands are wet. Touching the unit with wet hands will cause an electric • The “SAFETY PRECAUTIONS” indicated in this manual shock. contain important information pertaining to your safety. Be sure to observe them.
2. MAIN UNIT AND ACCESSORIES 3. OPTIONAL PARTS Description Q’ty Application Description Q’ty Application Part No. Model Installation manual This book Receiver unit 9378143012 UTB-YWB extending cable C the receiver 9378143036 UTB-TWB unit cable For receiving the signal Receiver unit from the wireless 4.
Ex. Installation on the wall • Do not touch the circuit board and circuit board parts Indoor unit directly with your hands. Otherwise, injury or electric shock could result. Ceiling • Tightening the mounting screws too tight will damage the case of this unit.
Screw (M4 x 12mm) Cover Bracket (cover) Screws (M4 x 10mm) Cover 1 Install the cover. 1 Affix the insulation to the 1 Attach the hook metal to Hook the 2 projections on the top of the cover onto holder cover. the indoor unit with the the bracket (cover), and then hook the projection on 2 Attach the hook metal to...
To remove the control box cover, refer to the installation CAUTION manual of the indoor unit. Connect receiver unit cable B to CN13 on the PCB. • Do not bind up the power cable together with the Route the receiver unit cable using the same method for transmission cable or remote controller cable.
8. TURNING ON THE POWER CAUTION • Before turning on the power, check that the voltage is within the rated range. If operated outside the rated range, erroneous operation cannot be prevented and cannot be compensated. (1) Turn on the circuit breakers for the indoor unit and outdoor unit.