Fl(Y)20Exv1 - Daikin FL15EXV1 Technical Manual

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
Indoor
Model
Outdoor
Max. Length, m
Max. Elevation, m
Indoor
Model
Outdoor
Max. Length, m
Max. Elevation, m
Piping sizes (fl are connection type) are as follows:
R22
Model R(Y)15CXV1
Liquid, mm / in 6.35 / 1/4
Suction, mm / in 12.70 / 1/2
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
Outdoor R15CXV1 R20CXV1 R25CXV1 R28CXV1 R30DXV1 R35DXV1
Add. Charge, g/m 15
R22 – Heatpump
Indoor FLY15EXV1 FLY20EXV1 FLY25EXV1
Outdoor RY15CXV1 RY20CXV1 RY25CXV1 RY28CXV1 RY30DXV1 RY35DXV1
Add. Charge, g/m 25
Note: Installation and maintenance are to be performed only by qualifi ed personnel who
are familiar with local codes and regulations, and experienced with this type of
equipment.
13
FL(Y)15EXV1

FL(Y)20EXV1

R(Y)20CXV1 /
R(Y)15CXV1
RY18CXV1
12
5
FL(Y)28EXV1 FL(Y)40EXV1
R(Y)30DXV1 R(Y)40DXV1
R(Y)20CXV1
6.35 / 1/4
15.88 / 5/8
FL28EXV1
16 39 40
FLY28EXV1
22 56 55
FL(Y)25EXV1
R(Y)25CXV1
FL(Y)40/50EXV1
R(Y)40/50DXY1
45
25
R(Y)25/28CXV1 / R(Y)35/40DXV1 /
R(Y)30DXV1 R(Y)40/50DXY1
9.52 / 3/8 9.52 / 3/8
15.88 / 5/8 19.05 / 3/4
FL35EXV1
R40DXV1
(1PH)
55 56 55
FLY35EXV1
RY40DXV1
(1PH)
55 54 54
FL(Y)28EXV1
R(Y)28CXV1
15
8
FH(Y)62CXV1
R(Y)61DXY1
35
15
R(Y)61DXY1
12.7 / 1/2
19.05 / 3/4
FL40EXV1 FL50EXV1 FH62CXV1
R40DXY1
R50DXY1 R61DXY1
(3PH)
55 55
FLY40EXV1 FLY50EXV1 FHY62CXV1
RY40DXY1
RY50DXY1 RY61DXY1
(3PH)
55 55
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101