Refrigerant Piping - Pioneer Yh1824Ghfd18Rt2 Installation Manual

Installation Instructions

Refrigerant Piping

1. Piping Requirement
Outer Diameter of Pipe [ in. (mm)]
Model
24K 5/8
36K 3/4
48K/60K
7/8
The shorter the refrigerant piping is, the better the performance will be. Thus the connecting pipe should be as short
as possible.
Height difference H
Model
24K
36K
48K/60K
Refrigerant - Additional Charge
The unit has been pre-loaded with refrigerant, but if exceeding 25 ft. (7.6m) of line-set, additional refrigerant (R410A) is required.
24K/36K: Additional refrigerant charge= (L-25) ft×0.38 oz/ft
48K/60K: Additional refrigerant charge= (L-25) ft×0.60 oz/ft
2. Piping material
(1) Prepare locally-supplied copper pipes.
(2) Use clean copper pipes. Ensure that there is no dust or moisture inside of the pipes. Blow the inside of the pipes
with nitrogen or dry air to remove any dust or foreign materials before connecting pipes.
(3) Piping thickness and material of the pipe are shown as below.
Diameter Thickness
[in. (mm)]
[in. (mm)]
ø
1/4 (6.35)
1/32 (0.8)
ø
3/8 (9.52) 1/32 (0.8)
ø
1/32 (0.8)
1/2 (12.70)
ø
5/8 (15.88) 1/32 (1.0)
ø
3/4 (19.05) 1/32 (1.0)
ø
7/8 (22.22) 1/32 (1.0)
Gas Liquid
(15.88) 3/8 (9.52)
(19.05) 3/8 (9.52)
(22.22) 3/8 (9.52)
Pipe length L
Indoor unit
Outdoor unit
Max. Height
Max. Pipe
difference
length (L)
(H)
164ft. (50m) 98ft. (30m)
246ft. (75m) 98ft. (30m)
246ft. (75m) 98ft. (30m)
Add.
Refrigerant
[exceed 25ft
7.6m]
0.38(oz/ft)
[35(g/m)]
0.38(oz/ft)
[35(g/m)]
0.60(oz/ft)
[56(g/m)]
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