Instruction/ maintenance manual of the product NGMU-E Mitsubishi Electronics
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INST ALLA TION MANUAL For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit. Air-Conditioners For Building Application INDOOR UNIT PCFY -.
2 s Before installing the unit, make sure you read all the “Safety precau- tions”. s Please report to your supply authority or obtain their consent before connecting this equipment to the power supply system. Warning: Describes precautions that must be observed to prevent danger of injury or death to the user .
3 2. Installation location 3. Installing the indoor unit 3.1. Check the indoor unit accessories (Fig. 3-1) The indoor unit should be supplied with the following accessories (contained in the inside of the intake grille).
4 Fig. 3-8 Fig. 3-5 Fig. 3-6 Fig. 3-7 3.2.5. Indoor unit preparation (Fig. 3-5) 1. Install the suspending bolts. (Procure the W3/8 or M10 bolts locally .) Predetermine the length from the ceiling ( 1 within 100 mm). A Ceiling surface B Suspending bolt C Suspending bracket 2.
5 4. Installing the refrigerant piping 4.1. Precautions 4.1.1. For devices that use R22 refrigerant • Use the refrigeration oil applied to the flared sections. • Use C1220 copper phosphorus, for copper and copper alloy seamless pipes, to connect the refrigerant pipes.
6 Installing procedures (Fig. 5-2) 1. Attach the joint socket 5 supplied with the unit to the drain port on the unit with a vinyl chloride adhesive. 2. Fasten the socket cover 6 supplied with the unit to the joint socket 5 . 3. Attach the field drain tubing (VP20/O.
7 6.2. Power supply wiring (Fig. 6-2) Power cable size (diameter) : more than 1.6 mm (A WG14) Ground cable size (diameter) : 1.6 mm (A WG14) * Use copper supply wires.
8 6.4. Setting addresses (Fig. 6-6) (Be sure to operate with the main power turned OFF .) • There are two types of rotary switch setting available: setting addresses 1 to 9 and over 10, and setting branch numbers. 1 How to set addresses Example: If Address is “3”, remain SW12 (for over 10) at “0”, and match SW1 1(for 1 to 9) with “3”.
9 6. Electrical work F A H C D E G I I I H B B-1. B-2. Fig. 6-8 A A B TB 6 B Fig. 6-7 J H Fig. 6-9 6.7. Remote controller 1) Installing procedures (1) Select an installing position for the remote controller . (Fig. 6-7) The temperature sensors are located on both remote controller and indoor unit.
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Please be sure to put the contact address/telephone number on this manual before handing it to the customer. This product is designed and intended for use in the residential, commercial and light-industrial environment. HEAD OFFICE: MITSUBISHI DENKI BLDG.
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