Fedders hfc1009n2f Guida Al Funzionamento
7
INDOOR UNIT INSTALLATION
Connecting the tubing to the indoor unit
• Sufficiently tighten the flare nut with fingers, then tighten the
flare nut with torque wrench according to the table in figure 9
• Wrap all exposed tubing with tape. Do not wrap tubing that
will be located inside the unit.
•
Pass the tubing, drain hose and connecting wire through the
wall with the drain hose on the bottom
wall with the drain hose on the bottom
•
Make sure all tubing, drain hose, and connecting wire angle
downwards as they pass through and exit the wall
downwards as they pass through and exit the wall
Use caution
when bending
when bending
Tubing, drain hose and
connecting wire
connecting wire
Tape
Tape
Connecting wire
Suction line
Insulation
Drain tubing
Liquid line
11
10
11
9
11
11
Liquid line and suction line should both be
insulated. Drain tubing outside the unit should also
be insulated.
insulated. Drain tubing outside the unit should also
be insulated.
Do not wrap tubing
that will be located
inside the unit
that will be located
inside the unit
Tube diameter Torque lb. ft. (N.m.)
1/4”
9.36 - 14.23
(6.35 mm)
(12.7 - 19.3)
1/2”
36.06 - 45.00
(12.70 mm)
(48.9 - 61.0)
3/8”
26.25 - 32.75
(9.52 mm)
(35.6 - 44.4)
Cutting Tubing And Cables
• Measure the distance between the indoor and outdoor units
• Cut tubing about 10% longer than the measured distance
• Cut electrical wires at least 6.5 feet longer than the measured
distance.
CAUTION
Remove burrs from the edges of the cut tubing. If burrs are
not removed, they may cause refrigerant leakage when in
operation.
not removed, they may cause refrigerant leakage when in
operation.
CAUTION
Any bend in the tubing must have a minimum radius of 4”
(100mm) to prevent leakage. Bend tubes with caution.
(100mm) to prevent leakage. Bend tubes with caution.
Do not remove the flare nut from the tubing in the indoor unit
until you are ready to connect it to the outdoor unit.
until you are ready to connect it to the outdoor unit.