En-1
English
Refrigerant
R410A
INSTALLATION INSTRUCTION SHEET
(PART NO. 9374241033)
Multi Air Conditioning System
for Buildings (VRF System)
OUTDOOR MODEL
AJ A72LBTF
MASTER AJ
A90LBTF
AJ
126LBTF
AJ
A72UBTF
SLAVE AJ
A90UBTF
AJ
126UBTF
Contents
1. SAFETY PRECAUTIONS ......................................................................... 2
2. PRECAUTIONS FOR USING THE ALTERNATIVE REFRIGERANT ....... 3
3. ACCESSORIES ........................................................................................ 4
4. INSTALLATION WORK ............................................................................ 5
4.1. SELECTING AN INSTALLATION LOCATION .............................................. 5
4.2. TRANSPORTING THE PRODUCT .............................................................. 6
4.3. INSTALLATION DIMENSIONS ..................................................................... 7
4.4 INSTALLATION THE UNIT ........................................................................... 9
4.5. SYSTEM LAYOUT ...................................................................................... 10
4.6. PIPE SELECTION...................................................................................... 11
4.7. PIPE INSTALLATION ................................................................................. 12
4.8. INSTALLING INSULATION ........................................................................ 17
4.9. DRAIN PROCESSING ............................................................................... 17
4.10. ELECTRICAL WIRING ............................................................................... 18
4.11. FIELD SETTING ........................................................................................ 23
5. CHARGING WITH REFRIGERANT ........................................................ 28
5.1. SEALING TEST ......................................................................................... 28
5.2. VACUUM PROCESS ................................................................................. 29
5.3. ADDITIONAL CHARGING ......................................................................... 29
6. TEST RUN ............................................................................................... 31
6.1. PRE-TEST RUN CHECK ITEMS ............................................................... 31
6.2. TEST RUN METHOD ................................................................................. 31
6.3. CHECKLIST ............................................................................................... 31
7. ERROR DISPLAY ................................................................................... 32
7.1. NORMAL OPERATION MODE .................................................................. 32
7.2. ERROR OPERATION MODE ..................................................................... 33
8. PUMP DOWN .......................................................................................... 34
9. OPTION PARTS ......................................................................................35
10. INFORMATION ....................................................................................... 36
9374241033_IM_en_p01-17.p65 26/8/2008, 18:231
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