English
VRF SYSTEM
OUTDOOR UNIT
AJ
□
A72LALH
AJ
□
A90LALH
AJ
□
108LALH
AJ
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126LALH
AJ
□
144LALH
INSTALLATION MANUAL
For authorized service personnel only.
PART NO. 9378945029-03
English
Contents
1. SAFETY PRECAUTIONS …………………………… 2
2. ABOUT THE PRODUCT ……………………………… 4
2. 1. Caution when using R410A refrigerant………… 4
2. 2. Special tools for R410A ………………………… 4
2. 3. Accessories ……………………………………… 4
2. 4. Combinations …………………………………… 4
2. 5. Option parts ……………………………………… 5
2. 6. Header …………………………………………… 5
3. INSTALLATION WORK ……………………………… 6
3. 1. Selecting an installation location ……………… 6
3. 2. Drain processing ………………………………… 6
3. 3. Installation dimensions ………………………… 7
3. 4. Transportation the outdoor unit ………………… 9
3. 5. Installation the unit …………………………… 10
4. SYSTEM CONFIGURATION ……………………… 11
4. 1. System confi guration ………………………… 11
4. 2. Pipe selection ………………………………… 12
4. 3. Protection of pipes …………………………… 13
5. PIPE INSTALLATION ……………………………… 13
5. 1. Brazing ………………………………………… 13
5. 2. Indoor unit pipe connections ………………… 13
5. 3. Piping method ………………………………… 14
5. 4. Multiple connections ………………………… 16
6. ELECTRICAL WIRING ……………………………… 18
6. 1. The precautions of electrical wiring ………… 18
6. 2. Knockout hole ………………………………… 19
6. 3. Selecting power supply cable and breaker … 20
6. 4. Transmission line ……………………………… 21
6. 5. Wiring method ………………………………… 22
6. 6. External input and external output ………… 24
7. FIELD SETTING …………………………………… 27
7. 1. Field setting switches ………………………… 27
7. 2. DIP switch setting …………………………… 27
7. 3. Rotary switch setting ………………………… 29
7. 4. Push button setting …………………………… 29
7. 5. Address setting for signal amplifi ers ………… 33
7. 6. Indoor unit address setting …………………… 33
7. 7. Resistance measurement of transmission cable
(Measure with breaker OFF) ………………… 35
8. PIPE INSTALLATION II …………………………… 36
8. 1. Sealing test …………………………………… 36
8. 2. Vacuum process ……………………………… 37
8. 3. Additional charging …………………………… 37
8. 4. Installing insulation …………………………… 39
9. TEST RUN …………………………………………… 40
9. 1. Pre-test run check items ……………………… 40
9. 2. Test operation method ……………………… 40
9. 3. Checklist ……………………………………… 42
10. LED Display ………………………………………… 42
10. 1. Normal operation mode ……………………… 42
10. 2. Error display mode …………………………… 43
11. INFORMATION ……………………………………… 44
9378945029-03_IM_EN.indb 19378945029-03_IM_EN.indb 1 2011-9-20 16:25:292011-9-20 16:25:29
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