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1
1-11-11
■
H
OW TO INSTALL THE OUTDOOR UNIT
Installing the Outdoor Unit
●
Use concrete or a similar material to make the base, and
ensure good drainage.
●
Ordinarily, ensure a base height of 5 cm or more. If a drain
pipe is used, or for use in cold-weather regions, ensure a
height of 15 cm or more at the feet on both sides of the unit.
(In this case, leave clearance below the unit for the drain
pipe, and to prevent freezing of drainage water in cold-
weather regions.)
●
See Fig.
1-11
-1 for the anchor bolt dimensions.
●
Be sure to anchor the feet with anchor bolts (M10). In
addition, use anchoring washers on the top side.
(Use large SUS washers with nominal diameter of 10.) (Field
supply)
Unit: mm
25
695
320
45
386
875
60.6
85.4
360.5
22
224
349
36.4
599
613
70
131
Air Discharge
Air Intake
Air Intake
Drain port
(3- ø20)
Hole for drain socket
(ø20)
Drain sockect (Field supply)
Fig.
1-11
-1
Drainage Work
The drain water will be discharged from the unit during heating
or defrosting operation mode.
S
elect an appropriate location with good drainage system.
(
In winter, there is a risk of slipping caused by freezing
depending on the installation location.)
●
Ensure a height of 15 cm or more at the feet on both sides of
the unit.
●
Precautions for Installation in Heavy Snow Areas.
The platform should be higher than the maximum
s
now depth
+ 50 cm.
(
In this case, leave clearance below the unit for the drain
pipe, and to prevent freezing of drainage water in cold-
weather regions.)
●
When using a drain pipe, install the drain socket (Field
supply) onto the drain hole. Seal the other drain hole with the
rubber cap (Field supply). For details, refer to the instruction
manual of the drain socket (Field supply).
After completing the installation work of the drain socket,
make sure that the water does not leak from any part of
connection.
●
In cold regions (where the outdoor temperature can drop to
below 0° for 2 to 3 consecutive days), the drain water may
freeze and may prevent the fan from operating. For this
case, do not use the drain socket (Field supply).
Routing the Tubing and Wiring
●
See Fig.
1-11
-1.
CAUTION
●
Route the tubing so that it does not contact the
compressor, panel, or other parts inside the unit. Increased
noise will result if the tubing contacts these parts.
●
When routing the tubing, use a tube bender to bend the tubes.
●
In cold-weather regions, in order to prevent drainage
water from freezing, do not install the drain socket cap.
Also take steps to prevent water from accumulating
around the unit.
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N OT E
When flared joints are reused, the flare part shall be re-fabricated.
A good flare should have the following characteristics:
●
inside surface is glossy and smooth
●
edge is smooth
●
tapered sides are of uniform length
Flare size: A (mm)
A
Copper tubing
(Outer dia.)
A
0
–
0.4
ø6.35
9.1
ø9.52
13.2
ø12.7
16.6
ø15.88
19.7
Caution Before Connecting Tubes Tightly
(1) Apply a sealing cap or water-proof tape to prevent dust or
water from entering the tubes before they are used.
(2) Be sure to apply refrigerant lubricant to the matching
surfaces of the flare and union before connecting them
together. This is effective for reducing gas leaks.
(3) For proper connection, align the union tube and flare tube
straight with each other, then screw on the flare nut lightly
at first to obtain a smooth match.
Flare nut
Union
●
Adjust the shape of the liquid tube using a tube bender at the
installation site and connect it to the liquid tubing side valve
using a flare.
Cautions During Brazing
●
Replace air inside the tube with nitrogen gas to prevent
copper oxide film from forming during the brazing
process. (Oxygen, carbon dioxide and Freon are not
acceptable.)
●
Do not allow the tubing to get too hot during brazing.
The nitrogen gas inside the tubing may overheat,
causing refrigerant system valves to become damaged.
Therefore allow the tubing to cool when brazing.
●
Use a reducing valve for the nitrogen cylinder.
●
Do not use agents intended to prevent the formation
of oxide film. These agents adversely affect the
refrigerant and refrigerant oil, and may cause damage or
malfunctions.
Apply refrigerant lubricant.
■
HOW TO INSTALL THE TIMER REMOTE
CONTROLLER (OPTIONAL PART)
N OT E
See
‟
Section 2. TEST RUN
”
.
■
HOW TO PROCESS TUBING
Both the liquid and the gas tubing sides are connected by flare
nuts.
Must ensure mechanical connections be accessible for
maintenance purposes.
Connecting the Refrigerant Tubing
N OT E
When connecting flare at indoor side, make sure that the flare
connection is used only once. If torqued up and released, the
flare must be remade. Once the flare connection was torqued
up correctly and leak test was made, thoroughly clean and
dry the surface to remove oil, dirt and grease by following
instructions of silicone sealant. Apply neutral cure & ammonia-
free silicone sealant that is non-corrosive to copper & brass to
the external of the flared connection to prevent the ingress of
moisture on both the gas & liquid sides. (Moisture may cause
freezing and premature failure of the connection.)
Use of the Flaring Method
Many of conventional split system air conditioners employ the
flaring method to connect refrigerant tubes that run between
indoor and outdoor units. In this method, the copper tubes are
flared at each end and connected with flare nuts.
Flaring Procedure with a Flare Tool
(1) Cut the copper tube to the required length with a tube
cutter. It is recommended to cut approx. 30 – 50 cm longer
than the tubing length you estimate.
(2) Remove burrs at each end of the copper tubing with a tube
reamer or a similar tool. This process is important and
should be done carefully to make a good flare. Be sure to
keep any contaminants (moisture, dirt, metal filings, etc.)
from entering the tubing.
N OT E
When reaming, hold the tube end downward and be sure that
no copper scraps fall into the tube.
(3) Remove the flare nut from the unit and be sure to mount it
on the copper tube.
(4) Make a flare at the end of the copper tube with a flare tool.
After
Before
Deburring
Copper
tubing
Reamer
Flare nut
Copper
tubing
Flare tool
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Содержание Inverter R32 Series
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