Carrier 42cvur018-703 Service Manual page 52

10-4. Outdoor Unit
10-4-1. Installation place
• A place which provides the spaces around the
outdoor unit as shown in the left diagram.
• A place which can bear the weight of the outdoor
unit and does not allow an increase in noise level
and vibration.
• A place where the operation noise and discharged
air do not disturb your neighbors.
• A place which is not exposed to a strong wind.
• A place free of a leakage of combustible gases.
• A place which does not block a passage.
• When the outdoor unit is to be installed in an
elevated position, be sure to secure its feet.
• An allowable length of the connecting pipe
up to 20 m.
• This air conditioner accepts a connection piping
length of up to 20 m.
• there is no need to add refrigerant as long as
the lendth of the connection piping 15 m or less.
• You will need to add 20 g of refrigerant per meter
of added connection piping for installations
requiring connection piping to be between 16 m
to 20 m.
• An allowable height level is up to 10 m.
• A place where the drain water does not raise any
problem.
CAUTION
1. Insall the outdoor unit in a location where there are
no obstructions near its air intake or air outlet.
2. When the outdoor unit is installed in a place that
is always exposed to strong wind like on the coast
or on a high story of a building, secure the normal
fan operation using a duct or a wind shield.
3. Especially in windy areas, insall the unit to
prevent the admission of wind.
4. Installation in the following places may result in
trouble.
Do not install the unit in such places.
• A place full of machine oil.
• A saline-place such as the coast.
• A place full of sulfide gas.
• A place where high-frequency waves are likely
to be generated, such as from audio equipment,
welders, and medical equipment.
Fig. 10-4-1
Strong
wind
10-4-2. Refrigerant piping connection
<Flaring>
1. Cut the pipe with a pipe cutter.
90°
2. Insert a flare nut into the pipe, and flare the pipe.
• Projection margin in flaring : A (Unit : mm)
Rigid (cluch type)
Outer dia.
of copper pipe
∅ 6.35
∅ 12.70
Imperial (wing nut type)
Outer dia. of copper pipe
∅ 6.35
CAUTION
∅ 12.70
<Tightening connection>
Align the centers of the connecting pipes and tighten
the flare nut as far as possible with your fingers. Then
tighten the nut with a spanner and torque wrench as
shown in the figure.
Half union
Externally
threaded side
Use a wrench
to secure.
– –
51
FILE NO. SVM-12052
Roughness
Obliquity
Fig. 10-4-2
A
Rigid
0 to 0.5 1.0 to 1.5
0 to 0.5 1.0 to 1.5
A
Die
Pipe
Fig. 10-4-3
R410A
1.5 to 2.0
2.0 to 2.5
Flare nut
Internally
threaded side
Use a torque wrench
to secure.
Fig. 10-4-4
Warp
Imperial