LIMITATION OF PIPING LENGTH
AND PIPING HEIGHT DIFFERENCE
(Three or four indoor units connected)
2015.03.02 12
a
H1
b
c
d
H2
Sum of pipe length
49 feet 3 inches < a+b+c+d < 229 feet 9 inches
Pipe length between
outdoor unit and indoor unit
16 feet 5 inches < a < 82 feet 1 inch
b
c
d
Height difference between
outdoor unit and indoor unit
H1 < 49 feet 3 inches
Height difference
between indoor units
H2 < 32 feet 10 inches
Sum of pipe length
FULL CHARGE
REFRIGERANT CHARGE
164 ft (50 m)
197 ft (60 m)
230 ft (70 m)
ADDITIONAL CHARGE
7 lbs 1 oz 3,200 g
7 lbs 8 oz 3,400 g
7 lbs 15 oz 3,600 g
7/32 oz/ft 20 g/m