Fujitsu ABU18RULX Manual - Página 41
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Piping
Separation Tube
Assembly Kit
Outdoor Unit
a
Liquid pipe 3/8 inch
=
Gas pipe 5/8 inch
Liquid pipe 1/4 inch
=
Gas pipe 3/8", 1/2", or 5/8"
based on indoor unit size*
=
Flare connections
Branch Box to Indoor
Calculate
Refrigerant Charge
Factory Charge 7.6 lb (3.45 kg)
Unit pre-charged to 0 feet
Total Pipe Length
377' max.
Height difference between
outdoor and indoor units
98' max.
b
d
Branch Box
f
g
=
Flare connections
7,000 BTU
9,000 BTU
12,000 BTU
18,000 BTU
24,000 BTU
Pipe Diameter
3/8"
1/4"
(Total length of 3/8" liquid line × 0.624 oz./ft. or 58g/meter ) + (Total length of 1/4" liquid line × 0.224 oz./ft. or 21g/meter )
(a+b+c+d+e) × 0.624 oz./ft. or 58g/meter + (f+g+h+i+j+k+l+m) × 0.224 oz./ft. or 21g/meter = additional refrigerant
16'
min.
**
**
Max. piping length
between outdoor unit
and farthest branch box
180' max.
Branch Box
* Distance between outdoor unit & farthest indoor unit.
** Total liquid pipe or total gas pipe.
Branch Box
i
j
h
*Branch box outlets are all 1/2" on gas pipe connections.
1/2" to 3/8" adaptors and 1/2" to 5/8" adaptors included (3 of each).
Liquid pipe
Adaptor
included
included
1/4 inch
included
n/a
included
Location
Outdoor to Branch Box
Branch Box to Indoor Unit
Actual pipe length
1' min.
Height difference
between branch
boxes
49'
max.
Pipe length
between
branch box
and farthest
indoor unit
49'
max.
48,000 BTUs
c
e
Branch Box
l
m
k
Gas pipe
3/8 inch
1/2 inch
5/8 inch
Additional Refrig.
0.624 oz./ft. or 58g/meter
0.224 oz./ft. or 21g/meter
230' max.*
17' min.
Branch Box
Height difference
between indoor and
indoor units
49' max.
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