Refrigerant Tubing; The Tubing Material; Tubing Connection - York YFGN24BZNRZUH1 Installation And Maintenance Manual

4. Refrigerant Tubing

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 reactive gas, these
gases are quite dangerous, and may possibly cause
explosion. It is suggested that the compressed air,
the nitrogen or the refrigerant is used to perform
these experiments.
4.1 The Tube Material
(1) Prepare the copper Tube on the spot.
(2) Choose dustless, non-humid, clean copper tube.
Before installing the tube, use nitrogen or dry air to
blow away the tube dust and impurity.
(3) Choose the copper tube according to Fig. 4.2.

4.2 Tubing connection

(1) The connection positions of the tube are shown in
Fig. 4.1 and Fig. 4.2.
Gas piping
Drain piping
Fig. 4.1 The connection positions of the tube
Capacity
Gas tube Liquid tube
(Btu/h)
φ12.7
18K
φ15.88
24K
φ19.05
36K,48K,55K
Fig. 4.2 The
The tube can be connected from three different
directions. (rear, right, top).
When the tube is routed through the back.
If the bracket is removed, tubing work will become
easier.
After tubing, reinstall the removed bracket.
When the tube is routed through the back.
Cut the removed top cover, and install to the rear
panel instead of rear cover.
unit: (mm)
Liquid piping Drain piping
(left)
(right)
Drain tube
φ6.35
φ9.52
φ9.52
tube diameter
(2) As shown in Fig. 4.3, nut tightening with 2 spanners.
Tube size
φ6.35mm
φ9.52mm
φ12.7mm
φ15.88mm
φ19.05mm
(3) After finishing connecting the refrigerant
it warm with the insulation material.
Side of the
indoor unit
De25
De25
Fig. 4.4 T
De25
CAUTION
·
The tube
·
Do not put the
Do not put the pipes on the
floor directly.
Protected with the tape or plug.
15
Installation and Maintenance
Torque（N·m）
Fig. 4.3 Nut tightening torque
Insulation
Clamp(attached)
ub ing insulation procedure
go through the hole with the seal.
tube s on the floor directly.
20
40
60
80
100
tube s, keep
(attached)
Refrigerant tube
(field supplied)
Insulation
(field supplied)