Daikin EWYT021CZI-A1, Руководство по установке и обслуживанию

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D-EIMHP01505-22_00EN 21/59
greenhouse effect if it is released. Therefore, pay special attention to check the tightness of the
installation.
The piping and other pressure-containing parts shall be suitable for refrigerant. Use phosphoric acid
deoxidised seamless copper for refrigerant.
▪
Foreign materials inside pipes (including oils for fabrication) must
be ≤30 mg/10 m.
▪
Temper grade: use piping with temper grade in function of the pipe diameter as listed in table below.
Pipe Ø Temper grade of piping material
Any Light annealed R220
Table 4
– Temper Grade for piping material
▪
The pipe thickness of the refrigerant piping shall comply with the applicable legislation. The minimal pipe thickness
for R32 piping must be in accordance with the table below.
Pipe Ø Thickness
6,35 mm/9,52 mm/12,7 mm 0,80 mm
16,00 mm 1,00 mm
22,20 mm 1,10 mm
28,6 mm 1,15 mm
Table 5
– Pipe thickness for R32
To select the piping size
Determine the proper size using the following tables and reference figure (only for indication).
Figure 12
– Piping scheme Indoor unit - Outdoor unit
Piping dimensions Indoor Unit
– Outdoor Unit
INDOOR UNIT G = Gas Piping L = Liquid Piping
EWYT021CZI-A1 Ø 28,6 mm Ø 9,52 mm
EWYT032CZI-A1 Ø 28,6 mm Ø 12,7 mm
EWYT040CZI-A1 Ø 28,6 mm Ø 12,7 mm
EWYT064CZI-A1 Ø 28,6 mm
Ø 12,7 mm on Circuit 1,
Ø 9,52 mm on Circuit 2
Table 6
– Piping diameters table
When the indoor unit connections do not match the diameter of the specified piping requirements, the piping diameter
requirements must be met using reducers/expanders (supply with the unit) on the indoor unit connections.
The table below shows the maximum length and height that the piping system between the indoor unit and the outdoor
unit can reach. It is strictly necessary to stay within those limits, otherwise it is not guaranteed the proper functioning of the
unit.