Installation Of The Outdoor Unit; Refrigerant Piping - Daikin FDM75DXV1 Installation Manual

Location For Installation
Install the outdoor unit in such way that air distributed by
the outdoor unit cannot be drawn in again (as in the case
of short circuit of discharge air). Allow sufficient space for
maintenance around the unit.
Ensure that there are no obstruction of air flow into or out
of the unit. Remove obstacles which block air intake or
discharge.
The location must be well ventilated, so that the unit can draw and distribute plenty of air.
A place capable of bearing the weight of the outdoor unit and isolating noise and vibration.
A place protected from direct sunlight. Otherwise use an awning for protection, if necessary.
A place where smooth drainage of rain water and water formed by defrosting is acceptable.
A place where the unit will not be buried in snow.
A place where air outlet port is not exposed to strong wind.
A place where the air discharge and operating sound level will not annoy the neighbours.
The location must not be susceptible to dust or oil mist.
If the condensing unit is operated in an atmosphere containing oils (including machine oils), salt (coastal area),
sulfide gas (near hot spring, oil refinery plant), such substances may lead to failure of the unit.
Installation Clearance
Outdoor unit must be installed such that there is no short circuit of the discharge air or obstruction to smooth air flow.
RC(P) 75/100/125/150D
RCY(P) 75/100/125/150E
Air
Discharge
2000mm
Allowable Pipe Length and Elevation
If the pipe is too long, both the capacity and reliability of the unit will drop. As the number of bends increases, resistance to
the flow of refrigerant system increases, thus lowering cooling capacity. As a result, the compressor may become defective.
Always choose the shortest path and follow the recommendations as tabulated below:
Model
Max Allowable Length, m
Max Allowable Elevation, m
Max Allowable Bend
Liquid pipe size, mm(in)
Gas pipe size, mm(in)
Bending must be carefully made so as not to crush the pipe. Use a pipe bender to bend a pipe where possible.
Our guarantee on the performance of our air-conditioners is strictly revoked if the height, length and/or no. of bends of

INSTALLATION OF THE OUTDOOR UNIT

! CAUTION

REFRIGERANT PIPING

! CAUTION
the refrigerant piping system installed is beyond the limit above.
When two or more outdoor units are installed in a location,
they must be positioned such that one unit will not be taking
the discharge air from another.
This also applies when two or more units are installed one
above the other. The units must all face the same direction,
or opposite direction (back to back), such that air short circuit
does not occur.
RC(P)75D RC(P)100D
RCY(P)75E RCY(P)100E
35 35
20 20
8 8
12.7(1/2") 15.9(5/8")
25.4(1") 28.6(1
1-12
RC(P)125D
RCY(P)125E
35
20
8
15.9(5/8")
" ) " )
1/8 3/8
34.9(1
RC(P)150D
RCY(P)150E
35
20
8
15.9(5/8")
" )
3/8
34.9(1