Service Manual 83
Installation
2.4 Piping connection size
Ø19.05Gas mm
Adjust to indoor unit
piping size
Ø 9.52Liquid mm
BA
A6UW406FA0
Y-Branch
A
A
A
B
B
B
B
B
B
BD Unit
Ø15.88Gas mm
Adjust to indoor unit
piping size
Ø 6.35Liquid mm
BA
A4UW306FA1
A
B
B
B
❐ If the above equation can not be satisfied, then follow the following steps.
- Selection of air conditioning system: select one of the next
1. Effective opening part Installation
2. Reconfirmation of outdoor unit capacity and piping length
3. Reduction of the amount of refrigerant
4. 2 or more security device installation of alarm for gas leakage
- Change indoor unit type
: installation position should be over 2m from the floor (Wall mounted type → Cassette type)
- Adoption of ventilation system
: choose ordinary ventilation system or building ventilation system
- Limitation in piping work
: design for earthquake-proof and prevention against thermal stress
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