Mitsubishi Electric 250YHA-A - Manual

Page 3 - Safety precautions; Using R410A refrigerant air conditioners; Installation location; Choosing the outdoor unit installation location

3 1800 900 780 1. Safety precautions 1.3. Before electric work Caution: • Be sure to install circuit breakers. If not installed, electric shock may result.• For the power lines, use standard cables of sufficient capacity. Otherwise, a short circuit, overheating, or fire may result. • When installing...

Page 5 - Use care in the following areas when handling the units.

5 2. Installation location • Leave open in two directions.• If the wall height (H) exceeds the overall height of the unit, add the dimension shown as “h” to the dimension shown as “*”. (h: Wall height (H) - overall unit height) • When there is a wall in front of the units, limit the maximum number o...

Page 6 - Transporting the unit; Installing the outdoor unit

6 3. Transporting 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 must go up along the unit to the top as shown inthe picture. Please put small cushions between ropes a...

Page 7 - Installing the refrigerant piping; Precautions for devices that use R410A refrigerant

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 devices that use R410A refrigerant • Refer to page 3 for precautions not included below on using air conditioners with R410A refr...

Page 10 - Precautions when reusing existing R22 refrigerant pipes

10 5.7. Precautions when reusing existing R22 refrigerant pipes • Refer to the flowchart below to determine if the existing pipes can be used.• See below for oil condition. Clear to slight yellow color → Normal Black or brown → Pipe cleaning is necessary. • If the diameter of the existing pipes is d...

Page 11 - Drainage piping work

11 7. Electrical work Fig. 7-1 7.1. Outdoor unit (Fig. 7-1, Fig. 7-2) (1) Remove the service panel.(2) Wire the cables referring to the Fig. 7-1 and the Fig. 7-2. A Indoor unit B Outdoor unit C Remote controller D Main switch (Breaker) E Earth Indoor unit model Phase Outdoor unit Frequency & Vol...

Page 14 - Information on rating plate

14 10. System control (Fig. 10-1) 9.3. Refrigerant collecting (pump down) Perform the following procedures to collect the refrigerant when moving the indoorunit or the outdoor unit. 1 Before collecting the refrigerant, first make sure that the all of the SW5 DIP switchesfor function changes on the c...

Page 16 - Printed in Japan

Please be sure to put the contact address/telephone number on this manual before handing it to the customer. H E A D O F F I C E : TOKYO B L D G . , 2 -7- 3 , M A RU N O U C H I , C H I YO DA - K U, TO K YO 1 0 0 - 8 3 1 0 , JA PA N Printed in Japan BG79U638H03

Mitsubishi Electric 250YHA-A - Manual

Table of Contents:

Summary

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