52
for North America
Photovoltaic Direct-driven VRF
ODU
IDU
Indoor
No. Indoor
①
Indoor
②
Indoor
③
Indoor
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
Φ
9.52: A+B+C+a=10+5+5+3=23m(75-1/2 feet)
Φ
6.35: D+b+c+d=5+3+2+1=11m(36feet)
NOTICE! Liquid pipe that is within 20m(65-5/8feet)doesn’t need to be added with refrigerant.
Therefore, the minimum quantity of additional refrigerant = (23-20)×0.054+11×0.022 = 0.404kg(14oz).
8 Installation of Condensate Pipes
8.1 Ensure an inclination degree of more than 1% when connecting the drain pipe to the IDU.
1000~1500
(mm)
Inclination degree
of more than 1/100
Correct connection Incorrect connection
facilitate further maintenance.
When connecting the drain pipe branches to the main pipe, lead through from the above part of the main pipe.
If the air volume of the IDUs is high and outdoor air resorption may be caused by negative suction pressure, provide a u-type drain trap
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