Refrigerant Pipe; The Pipe Material; The Connection Of The Pip - Hisense AUD-18UX4SGKL User And Installation Instructions Manual

Static pressure
box Canvas duct
Insulation material
Air-outlet
Horizon
The valve for the amount of air
Fig. 3.9 Installing the duct

4. Refrigerant Pipe

DANGER
Use the R410A refrigerant. When carrying on the
leakage check and test, do not mix in the oxygen, the
acetylene and flammable and the virulent gas, for
these gases are quite dangerous, and may possibly
cause explosion. It is suggested that the compressed
air, the nitrogen or the refrigerant be used to perform
these experiments.

4.1 The Pipe Material

(1) Prepare the copper pipe on the spot.
(2) Choose dustless, non-humid, clean copper pipe.
Before installing the pipe, use nitrogen or dry air to
blow away the tube dust and impurity.
(3)Choose the copper pipe according to Fig. 4.2.
4.2 The Connection of the Pipe
(1) The connection positions of the pipe are shown in
Fig. 4.1 and Fig. 4.2.
The refrigerant gas pipe
The refrigerant liquid pipe
Drain pipe connection hole
Fig. 4.1 The connection positions of the tube
Model Gas pipe Liquid pipe
Φ12.7
18K
φ15.88
24K,36K
48K,60K Φ19.05
Fig. 4.2 The pipe diameter
Static pressure
Canvas duct box
Air inlet
Service mouth
(with filter)
（600mm-600mm）
Drain pipe
Φ6.35
De32
Φ9.52
De32
φ9.52
De32
(2) As shown in Fig. 4.3, screw up the nuts with 2 spanners.
The valve for
the amount of air
Outside air
(through
the filter)
Tube size
φ6.35mm
φ9.52mm
φ12.7mm
φ15.88mm
φ19.05mm
(3) After finishing connecting the refrigerant pipes, keep
it warm with the insulation material.
Side of the
indoor unit
Fig. 4.4 Piping insulation procedure
CAUTION
·
The pipe go through the hole with the seal.
·
Do not put the pipes on the floor directly.
35
61
78
Do not put the pipes on the
floor directly.
unit:mm
Protected with the tape or plug.
38
Installation and Maintenance
Torque（N.m）
Fig. 4.3 Screw up the nut torque
Insulation (attached)
Clamp(attached)
20
40
60
80
100
Refrigerant pipe
(field supplied)
Insulation
( field supplied )