Daikin FHY62CXV1, Technical Manual

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13
Application Information
Refrigerant Piping
If the pipe length is too long, both the capacity and the reliability of the unit will decrease. As the number
of bends increases, resistance of the piping system to the refrigerant
fl ow increases and thus lowering the
capacity, as a result the compressor may become defective. Always choose the shortest path and follow the
recommendation as tabulated as below
Model
Indoor FL(Y)15EXV1 FL(Y)20EXV1 FL(Y)25EXV1 FL(Y)28EXV1
Outdoor R(Y)15CXV1
R(Y)20CXV1 /
RY18CXV1
R(Y)25CXV1 R(Y)28CXV1
Max. Length, m 12 15
Max. Elevation, m 5 8
Model
Indoor FL(Y)28EXV1 FL(Y)40EXV1 FL(Y)40/50EXV1 FH(Y)62CXV1
Outdoor R(Y)30DXV1 R(Y)40DXV1 R(Y)40/50DXY1 R(Y)61DXY1
Max. Length, m 45 35
Max. Elevation, m 25 15
Piping sizes ( fl are connection type) are as follows:
R22
Model R(Y)15CXV1 R(Y)20CXV1
R(Y)25/28CXV1 /
R(Y)30DXV1
R(Y)35/40DXV1 /
R(Y)40/50DXY1
R(Y)61DXY1
Liquid, mm / in 6.35 / 1/4 6.35 / 1/4 9.52 / 3/8 9.52 / 3/8 12.7 / 1/2
Suction, mm / in 12.70 / 1/2 15.88 / 5/8 15.88 / 5/8 19.05 / 3/4 19.05 / 3/4
Additional Charge
The refrigerant is pre-charged in the outdoor unit. If the piping length is less than 7.6m, then additional
charge after vacuuming is not necessary. If the piping length is more than 7.6m, then use the additional
charge (g) per additional 1m length as tabulated:
R22 – Cooling Only
Indoor FL15EXV1 FL20EXV1 FL25EXV1 FL28EXV1 FL35EXV1 FL40EXV1 FL50EXV1 FH62CXV1
Outdoor R15CXV1 R20CXV1 R25CXV1 R28CXV1 R30DXV1 R35DXV1
R40DXV1
(1PH)
R40DXY1
(3PH)
R50DXY1 R61DXY1
Add. Charge, g/m 15 16 39 40 55 56 55 55 55 102
R22 – Heatpump
Indoor FLY15EXV1 FLY20EXV1 FLY25EXV1 FLY28EXV1 FLY35EXV1 FLY40EXV1 FLY50EXV1 FHY62CXV1
Outdoor RY15CXV1 RY20CXV1 RY25CXV1 RY28CXV1 RY30DXV1 RY35DXV1
RY40DXV1
(1PH)
RY40DXY1
(3PH)
RY50DXY1 RY61DXY1
Add. Charge, g/m 25 22 56 55 55 54 54 55 55 101
Note: Installation and maintenance are to be performed only by quali fi ed personnel who
are familiar with local codes and regulations, and experienced with this type of
equipment.
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