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Mitsubishi Electronics 250YHA-A - page 1
English INST ALLA TION MANU AL For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit. Air -Conditioner s PUHZ-RP200, 250 YHA-A FOR INSTALLER ...
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Mitsubishi Electronics 250YHA-A - page 2
2 Contents 1. Safety precautions ................................................................................... 2 2. Installation location .................................................................................. 3 3. T ransporting the unit ................................................................................ 5 4. Installin ...
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Mitsubishi Electronics 250YHA-A - page 3
3 1800 900 780 1. Safety precautions 1.3. Bef ore electric work Caution: • Be sure to install circuit breaker s. If not installed, electric shock may result. • For the power lines, use standard cab les of sufficient capacity . Otherwise, a short circuit, overheating, or fire ma y result. • When installing the power lines, do not apply tension ...
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Mitsubishi Electronics 250YHA-A - page 4
4 2. Installation location 2.4. V entilation and ser vice space 2.4.1. When installing a single outdoor unit. When installing a par t that is sold separately , make sure to pro vide the required space f or that par t as indicated in its manual. (1) Basic inf ormation for determining required space (Fig. 2-3) The required space f or the back of the ...
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Mitsubishi Electronics 250YHA-A - page 5
5 2. Installation location • Leav e open in two directions. • If the wall height (H) e xceeds the ov erall height of the unit, add the dimension shown as “ h ” to the dimension shown as “ * ” . (h: Wall height (H) - o ver all unit height) • When there is a wall in front of the units , limit the maximum number of units con- nected toge ...
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Mitsubishi Electronics 250YHA-A - page 6
6 3. T ransporting the unit 3.3. Precautions when lifting the unit (Fig. 3-3) • When hang-lifting the unit, pass the sling or rope through the square-shaped holes (there are 4) at the base. The rope m ust go up along the unit to the top as shown in the picture. Please put small cushions between ropes and the unit (where the ropes touch the unit) ...
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Mitsubishi Electronics 250YHA-A - page 7
7 5. Installing the refrigerant piping A Flare cutting dimensions B Flare nut tightening torque 90 ° ± 0.5 ° ø A R0.4~R0.8 A 45 °± 2 ° B C D Fig. 5-1 5. 1. Precautions for de vices that use R410A refrigerant • Refer to page 3 for precautions not inc luded below on using air conditioner s with R410A refrigerant. • Use ester oil, ether oil ...
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Mitsubishi Electronics 250YHA-A - page 8
8 5. Installing the refrigerant piping (3) Use the following procedure f or connecting the gas-side piping. (Fig. 5-2) 1.Remove the flange and packing attached to the v alv e body . These were mounted at the time of shipping from the f actor y to prev ent refrigerant leakage. * Nev er attempt to reuse this packing as refrigerant leakage will occur ...
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Mitsubishi Electronics 250YHA-A - page 9
9 B G H C A F E D I Fig. 5-6 1 2 5. Installing the refrigerant piping 5.5. Stop valve opening method (Fig. 5-6) (1) Remo ve the cap and turn the valv e rod counterclockwise as f ar as it will go with the use of hexagonal wrench. Stop tur ning when it hits the stopper . (2) Make sure that the stop v alv e is open completely , push in the handle and ...
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Mitsubishi Electronics 250YHA-A - page 10
10 5.7. Precautions when reusing existing R22 refrigerant pipes • Refer to the flo wchar t below to determine if the existing pipes can be used. • See below f or oil condition. Clear to slight yello w color → Normal Black or bro wn → Pipe cleaning is necessary . • If the diameter of the e xisting pipes is different from the specified diam ...
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Mitsubishi Electronics 250YHA-A - page 11
11 7. Electrical work Fig. 7-1 7.1. Outdoor unit (Fig. 7-1, Fig. 7-2) (1) Remov e the service panel. (2) Wire the cables ref erring to the Fig. 7-1 and the Fig. 7-2. A Indoor unit B Outdoor unit C Remote controller D Main switch (Break er) E Earth Indoor unit model Phase Outdoor unit F requency & V oltage Power supply Max. Permissive System Imp ...
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Mitsubishi Electronics 250YHA-A - page 12
12 WIRING SPECIFICA TIONS FOR 220-240 V 50 Hz (INDOOR-OUTDOOR CONNECTING CABLE) Cross section of cable Round Flat Flat Round Wire size (mm 2 ) 2.5 2.5 1.5 2.5 Number of wires 3 3 4 4 P olarity Clockwise : S1-S2-S3 * P ay attention to stripe of y ellow and green Not applicable (Because center wire has no cov er finish) F rom left to right : S1-Open- ...
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Mitsubishi Electronics 250YHA-A - page 13
13 9. Special Functions 8.2. Unit replacement operation s Replacement operation is the operation by whic h impurities remaining in the existing piping (chlorinated compounds) are captured b y the activated carbon filter (replacement filter) in the outdoor unit. • This model will automatically begin the replacement operation after it has been inst ...
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Mitsubishi Electronics 250YHA-A - page 14
14 10. System control (Fig. 10-1) 9.3. Refrigerant collecting (pump down) P erf orm the following procedures to collect the refrigerant when moving the indoor unit or the outdoor unit. 1 Before collecting the refrigerant, first mak e sure that the all of the SW5 DIP s witches for function changes on the control board of the outdoor unit are set to ...
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Mitsubishi Electronics 250YHA-A - page 15
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Mitsubishi Electronics 250YHA-A - page 16
Please be sure to put the contact address/telephone number on this manual before handing it to the customer. HEAD OFFICE: T OK Y O BLDG., 2-7 -3, MAR UNOUCHI, CHIY OD A-KU, T OKY O 100-8310, JAP AN Printed in Japan BG79U638H03 ...
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