Nortek V5BV-36WMAK, Руководство пользователя

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DC Inverter Multi VRF System
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4.2.6 Dimension of Pipe between Indoor Branch and IDU
Dimension of pipe between indoor branch and IDU should be consistent with the dimension of
indoor pipe.
Fig. 9
Rated capacity of IDU
C(Btu/h)
Gas pipe
(mm/inch)
Liquid pipe (mm/inch)
C ≤ 9600
Φ 9.52
( Φ 3/8)
Φ 6.35
( Φ 1/4)
9600< C ≤ 17000
Φ 12.7
( Φ 1/2)
Φ 6.35
( Φ 1/4)
17000< C ≤ 48000
Φ 15.9
( Φ 5/8)
Φ 9.52
( Φ 3/8)
48000< C ≤ 55000
Φ 19.05
( Φ 3/4)
Φ 9.52
( Φ 3/8)
55000< C ≤ 96000
Φ 22.2
( Φ 7/8)
Φ 9.52
( Φ 3/8)
NOTICE! If the distance between IDU and its nearest branch is over 10m(33feet), then the
liquid pipe of IDU (rated capacity ≤ 17000Btu/h) shall be enlarged.
4.3 Installation of Connection Pipe
(1)
Observe the following during pipe connection: Connection pipe should be as short as possible. Height
difference between indoor and outdoor units should be as short as possible. Keep the number of bends as
few as possible. Radius of curvature should be as large as possible.
(2)
Weld the connection pipe between indoor and outdoor units. Strictly follow the requirements for welding
process. Rosin joint or pin hole is not allowed.
(3)
When laying the pipe, be careful not to distort it. Radius of bending parts should be over 200mm(8inch). Note
that pipes cannot be repeatedly bent or stretched; otherwise it will become brittle and break. Do not bend or
stretch the pipe for more than 3 times at the same position.