82
for North America
NOTICE
(1) The refrigerant amount charged before delivery doesn’t include the amount that needs to be added
to indoor units and the connection pipeline.
(2) Length of connection pipe is decided on site. Therefore the amount of additional refrigerant shall be
decided on site according to the dimension and length of field-installed liquid pipe.
(3) Record the amount of additional refrigerant for convenience of after-sales service.
Calculation of the amount of additional refrigerant
Calculation method of the quantity of additional refrigerant (based on liquid pipe)
Quantity of additional refrigerant = ∑length
of liquid pipe X quantity of additional refrigerant
per meter(39-3/8inch)
Diameter of
liquid pipe
(mm/inch)
Φ22.2(7/8)
Φ19.05(3/4
)
Φ15.9(5/8
)
Φ12.7(1/2
)
Φ9.52(3/8
)
Φ6.35(1/4)
kg/m
0.35
0.25
0.17
0.
11
0.054
0.022
oz/inch
0.314
0.224
0.15
2
0.09
9
0.048
0.020
NOTICE!
Liquid pipe that is within 20m
(
65-5/8feet) doesn’t need to be added with
refrigerant.
First confirm that there is no leakage from the system.When compressor is not working,
charge additional R410A with specific amou
nt to the unit through the filling opening of the
liquid pipe valve of the outdoor unit. If required amount cannot be quickly filled due to
pressure increase of the pipe, then set the unit in cooling startup and fill refrigerant from the
low pressure check valve of the outdoor unit.
(4)
Calculation example
ODU
IDU
Indoor unit
：
No.
IDU
①
IDU
②
IDU
③
IDU
④
Model
Duct type GMV-ND18PLS/
A-T(U)
Duct type GMV-ND12PLS/
A-T(U)
Duct type GMV
-ND09PLS/
A-T(U)
Duct type GMV
-ND09PLS/A-T(U)
Liquid pipe:
No.
A
B
C
D
Pipe size
φ9.52mm(3/8inch
)
φ9.52 mm(3/8inch
)
φ9.52 mm(3/8inch)
φ6.35 mm(1/4inch)
Length
10m(32-3/4feet)
5m(16-3/8feet)
5m(16-3/8feet)
5m(16-3/8feet)
No.
a
b
c
d
Pipe size
φ9.52mm(3/8inch
)
φ6.35 mm(1/4inch
)
φ6.35 mm(1/4inch)
φ6.35 mm(1/4inch)
Length
3m(9-3/4feet)
3m(9-3/4feet)
2m(6-5/8feet)
1m(3-1/4feet)
Total length of each liquid pipe
φ9.52:A+B+C+a=10+5+5+3=23m(75-1/2 f
eet)
φ6.35: D+b+c+d=5+3+2+1=
1
1m(36feet)
Photovoltaic Direct-driven VRF
Summary of Contents for R410A
Page 1: ...Photovoltaic Direct driven VRF for North America R410A GC201610 1 ...
Page 3: ...1 Photovoltaic Direct driven VRF for North America PRODUCT PRODUCT ...
Page 15: ...13 for North America CONTROL CONTROL Photovoltaic Direct driven VRF ...
Page 38: ...36 Photovoltaic Direct driven VRF for North America INSTALLATION ...
Page 61: ...MAINTENANCE for North America Photovoltaic Direct driven VRF 59 ...
Page 65: ...63 for North America Photovoltaic Direct driven VRF 3 Discharge temperature protection ...
Page 90: ...JF00303127 ...
