Mitsubishi Electric SEZ-A18 - Manual

5 5. Refrigerant piping work 5.1. Refrigerant pipe (Fig. 5-1) Maximum difference between heights of indoor unit and outdoor unit, the length ofrefrigerant piping and the number of bends in piping are within limits shown below. Models (A) Pipe length (B) Height (C) Number of (one way) difference bend...

6 a d c b e f 90 ° d c b a 5. Refrigerant piping work b a a b e b c d c A 5.2. Flaring work • Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure. 5.2.1. Pipe cutting (Fig. 5-3) • Using a pipe cutter cut the copper tube correctly. 5.2.2. Bur...

7 5. Refrigerant piping work 5.4. Purging procedures leak test PURGING PROCEDURES Connect the refrigerant pipes (both the liquid and gas pipes) between the indoorand the outdoor units. Remove the service port cap of the stop valve on the side of the outdoor unit gas pipe.(The stop valve will not wor...

8 7. Electrical work N A B H C F D E A G N 2 3 N 2 3 N L L 1 2 N B C F E N 2 3 1 2 N L L A H A D C E A G N 3 N F N L L (1) SEZ-A12AR (1:1 SYSTEM) 7.1. Power supply (Fig. 7-1) Electrical specification Input capacity Main Switch/Fuse (A) Power supply SEZ-A12AR SEZ-A18AR SEZ-A24AR (1 phase ~/N, 220-240...

9 7. Electrical work Fig. 7-4 L N N 2 3 N 2 3 1 2 5 1 2 7 6 3 4 65 mm 15 mm 1 2 Fig. 7-3 • Perform wiring as shown in the diagram to the lower left. (Procure the cable lo- cally). (Fig. 7-3)Make sure to use cables of the correct polarity only. 1 Connecting cable 2 Power supply cable 4 core VVF cable...

10 7.4. Outdoor unit (Fig. 7-8) • Connect cable from the indoor unit correctly on the terminal-block.• Use the same terminal block and polarity as is used with the indoor unit.• For aftercare maintenance, give extra length to connecting cable. • Both end of connecting cable (extension wire) are peel...

11 9. Air filter installation 9.1. Confirmation of enclosed parts (Fig. 9-1) • Please ensure all the par ts shown below are present before starting installation. 1 Filter × 1 2 Filter rail × 1 3 Filter rail × 1 4 ST. screw (4 × 10) × 14 5 Clamp × 2 6 Seal × 2 1 2 3 Fig. 9-1 6 Cut out Cut out Hole 4 ...

12 9. Air filter installation 9.4. Filter installation points (Rear air intake) (Fig. 9-4) 1. Insert the filter into rail 2 2. Hook the filter onto rail 3 A Control box B Drain pan D Filter E Rail 2 F Rail 3 Fig. 9-4 1 2 B A E D F Fig. 9-5 2 1 A E D F A F H G E 9.5. Filter installation points (Botto...

14 10.4. AUTO RESTART FUNCTION This model is equipped with the AUTO RESTART FUNCTION.When the indoor unit is controlled with the remote controller, the operation mode,set temperature, and the fan speed are memorized by the indoor controller board.The auto restart function sets to work the moment the...

15 1 Wiring from the Remote Control This wire is connected to terminal block for remote controller of the indoor unit (non-polar). 2 When a Different Refrigerant System Grouping is Used. Up to 4 refrigerant systems can be controlled as one group using the MA remotecontroller. There is need to set up...

Please be sure to put the contact address/telephone number on this manual before handing it to the customer. • Low Voltage Directive 73/23/ EEC • Electromagnetic Compatibility Directive 89/336/ EEC This product is designed and intended for use in the residential, commercial and light-industrial envi...