English
VRF SYSTEM
OUTDOOR UNIT
AJ
□
A72LALH
AJ
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A90LALH
AJ
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108LALH
AJ
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126LALH
AJ
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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 con
fi
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 ampli
fi
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 1
9378945029-03_IM_EN.indb 1
2011-9-20 16:25:29
2011-9-20 16:25:29
