Daikin FDMA125AV16 Installation Manual page 29

.REFRIGERANT PIPING WORK (2/5)
Piping bend radius
Refrigerant pipe size and chargeless length
0-3
PIPIN G PROTECTIO N
• Prevent contamination or moisture from getting into the piping.
• Pay special attention when running the copper piping through the through-hole or when leading the edge of the piping
outside the room.
• Refrigerant piping must be protected from physical damage. Install a plastic cover or equivalent.
Location WORK PERIOD
One month or more
Outdoor
Less than one month
REFERIGERANT PIPING SIZA AND ALLOWABLE PIPING LENGTH
(�5-_ 4 _ R _ E _ F _ R _I G _ E _ R _A_NT_P _IP _ I N _ G _ S _ I _ Z E _A_ N D_A_ L L _ O_ W _ A _B_ L_ E _ P_ I P_ I_NG_L _ EN_ G _ T_H __ �)
I I
CAUTION
This unit is chargeless specification. Due to chargeless length and allowable piping length will be different
depend on field pipe size.
Piping diameter
09.5mm
015.9mm
Outdoor unit type
RZA125AV16
RZA140AV16
• One way maximum allowable piping length means the maximum length of liquid side piping or gas side piping.
• Equivalent length is the pressure loss due to L joints, traps, and so on along the refrigerant piping converted to
a straight piping length of the same size and added to the overall value.
Please see the Engineering Data for calculation of equivalent length.
• Please give the vertical interval between the indoor and outdoor as 20m or less.
I I
Refrigerant piping size and one way maximum allowable piping length.
Pair Connection
Outdoor unit type
RZA125AV16
RZA140AV16
• When flared joints are reused, the flared part shall be re-fabricated.
• Use dedicated piping cutters and flaring tools for R41 OA or R32.
• When making a flare connection, apply ether or ester oil only to the flare inner surface.
• Use only the flare nuts attached to the unit. If other flare nuts are used, it may cause refrigerant leakage.
• To prevent contamination, dust or moisture from getting into the piping, take measures such as pinching or
taping the pipings.
)
PROTECTION METHOD
Pinching
Pinching or taping
Pipe thickness
(material)
0.8 mm (C1220T-O, Type 0)
1.0 mm (C1220T-O, Type 0)
Liquid pipe size
(type)
0 9.5mm x t 0.8 mm
(type 0)
Maximum allowable piping
Liquid pipe size
length (It is equivalent length
(type)
in the inside)
0 9.5mm x t 0.8 mm
(type 0)
,Lh.
,Lh.
WARNING
CAUTION
<Please refer to installation manual of indoor
unit about indoor unit's refrigerant piping>
) .
WORK PERIOD
Location
N/A
Indoor
(Units: mm)
Bend radius
30mm or more
50mm or more
Charge less
length
30m
Gas pipe
size (type)
0 15.9mm x t 1.0 mn
50m (70m)
(type 0)
28
PROTECTION METHOD
Pinching or taping
Maximum allowable piping
length (It is equivalent length
in the inside)
50m (70m)