Centek CT-65R07+ [38/48] Рис 10
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Centek CT-65R07+ [38/48] Рис 10

Centek CT-65R07+ [38/48] Рис 10
37
OUTDOOR UNIT INSTALLATION
If mounting brackets are required for installing the outdoor unit you
will have to purchase it separately (Fig. 10).
– Assemble the mounting frame using the included 6 screws, plain
washers, spring washers and nuts.
– Select the locations for installing the left and right supports. Ensure
that the left and right supports are installed at the same height.
Drill 5 or more holes in the wall in accordance with the outdoor unit
support dimensions.
– Fasten the mounting frame to the wall.
– Fasten the outdoor unit to the mounting supports with 4 screws. The
unit should be fastened in a stable and secure way.
– The outdoor unit shall be suspended with ropes during installation to
prevent it from being dropped.
– Tools and components should be secured from falling during
installation or repairs.
– Regularly check stability of the mounting frame.
Рис. 10
Figure 10
TUBE CNNECTIONS
– Remove the outdoor unit valve cover.
– Align the nut on the threads and firmly tighten the nut by hand.
– Thoroughly tighten the nut with a torque wrench until a click is
heard (Fig. 11).
– It is recommended to use a torque wrench for tube connections.
The use of an ordinary spanner can lead to damage to threaded
connections. The required torque values are shown in Table 2.
– The tube bend radius should not be too small, otherwise the tube
may break; the installation personnel shall use special tube bending
tools.
– Do not allow water, dust or sand to get into the tubes.
Гайка
развальцовки
Резьба
Трубопровод
Рис. 11
wrench
wrench
flare nut
thread
pipeline
Figure 11
Table 2
Tube size
(mm)
Torque
(N, m)
φ 6.35 (1/4”) 15~20
φ 9.52 (3/8”) 35~40
φ 12.70 (1/2”) 50~55
φ 15.88 (5/8”) 68~82
TUBE WRAPPING
– Carefully wrap the tubes with the protective PVC tape, try not to
damage the pipelines and drain tube.
– Start the wrapping from the bottom of the outdoor unit towards the
indoor unit.
– Secure the PVC tape with adhesive tape for a more reliable fixation.
– The drain tube should be inclined downwards to ensure gravity
drainage flow.
– If the indoor unit is mounted lower than the outdoor unit the drain
tube should be routed separately, to prevent water backflow into the
indoor unit.
– Fasten the tubes on the wall with the special brackets (Fig. 12).
– Close the wall openings with a rubber gland or sealing compound.
Стена
Рис. 15
Зажим
wall
PVC protective film
clamp
Figure 12
VACUUM TESTING
ATTENTION!
Moist air in the cooling circuit can cause malfunctions during air
conditioner operation.
Moist outdoor air fills the copper tubes during installation. It will
penetrate into the system if it is not removed. This will cause the
compressor to work with a higher load and to overheat.
Moisture also negatively affects the functionality of the air conditioner.
The Freon refrigerant used in the AC contains a certain amount of oil
to lubricate the internal components. The oil is hygroscopic and, when
saturated with water, it will lubricate the components less effectively,
which will accelerate wear.
Air can be removed from the system using a vacuum pump.
For this operation you will need a vacuum pump, a high-pressure tube
and a group of two pressure gage: a high pressure and a low pressure
one (Fig. 13).
Without opening the control valve vents connect the hose from the
vacuum pump to the intake check valve and turn the equipment on.
It should operate for 15 to 30 minutes during which all air, vapors and
residual nitrogen will be extracted.
After that turn the vacuum pump off, close the pump valve, but leave
it connected for another 15 to 20 minutes. Observe the pressure gage
readings during this time. If the system is tight the pressure gage

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