Publicité
Les langues disponibles
Les langues disponibles
4. Installing the outdoor unit
® M3/8 (M10) bolt
® Base
© As long as possible.
© Vent
© Setdeep in the ground
23-5/8
Min. 14-6/62
-
Min. 13/82)
|6-7/8
[7 37.
23-5/8
7
1
(Qs
|
oS
Tig
8-718 | 5
13/32
©
Fig. 4-1
5. Installing the refrigerant piping
(inch)
* Be sure to install the unit in a sturdy, level surface to prevent rattling noises dur-
ing operation. (Fig. 4-1)
<Foundation specifications>
Foundation boit
M10
Thickness of concrete
120 mm
(4-2
of bolt
70 mm
(2-3/4
320
lbs
* Make
sure that the length of the foundation boit is within 30 mm
(1-3/16") of the
bottom surface of the base.
* Secure
the base of the unit firmly with four-M10 foundation
bolts in sturdy loca-
tions.
Installing the outdoor unit
* Do not block the vent. If the vent is blocked, operation will be hindered and break-
down may result.
* In addition to the unit base, use the installation holes on the back of the unit to at-
tach wires, etc., if necessary to install the unit. Use self-tapping screws (#5 x 15
mm, 213/16" x 19/32" or less) and install on site.
AN Warning:
« The
unit must
be securely
installed
on
a structure
that can
sustain
its
weight.
If the unit is mounted
on an unstable structure, it may fall down
and cause
damage or injuries.
« The
unit must
be installed
according
to the instructions
in order to mini-
mize the risk of damage
from
earthquakes,
typhoons,
or strong winds.
An
incorrectly installed unit may fall down
and cause damage
or injuries.
® Outdoor unit
Branch box
© Indoor unit
5.1. Precautions for devices that use R410A refrigerant
Refer to page 3 for precautions not included below on using air conditioners with
R410A refrigerant.
Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration oil ap-
plied to the flared sections.
Use ©1220
copper phosphorus,
for copper and copper alloy seamless
pipes, to
connect the refrigerant pipes. Use refrigerant pipes with the thicknesses specified
in the table to the below. Make sure the insides of the pipes are clean and do not
contain any harmful contaminants such as sulfuric compounds,
oxidants, debris,
or dust.
AN Warning:
When
installing or moving the air conditioner, use only the specified refriger-
ant (R410A) to charge the refrigerant lines. Do not mix it with any other refrig-
erant and do not allow air to remain in the lines. Air enclosed in the lines can
cause pressure peaks resulting in a rupture and other hazards.
26.35
mm
(1/4 inch),
@8.52
mm
(3/8 inch),|Thickness 0.8 mm
(1/82 inch)
212.7 mm
(1/2 inch)
215.88 (5/8 inch)
Thickness 1.0 mm (5/128 inch)
* Do not use pipes thinner than those specified above.
Total piping length
b1+b2+a1t+a2+a3+a4+a5+a6+a7+
a8 5 115 m (377 ft.)
Permissible
| Farthest piping length (L)
b2 + a8 < 70 m (230 ft.) (b2 = 55 m (180 ft.), a8 S 15 m (49 ft.)
length
Piping length between outdoor unit and branch boxes
bi + b2
55 m (180 ft.)
(one-way)
Farthest piping length after branch box (I)
a8 <= 15 m (49 ft.)
Total piping length between branch boxes and indoor units
ait+a2+a3+a4+a5+a6+a7+a8<
60 m (197 ft.)
Permissible
In indoor/outdoor section (H) *1
H s 30 m (98 ft.) (In case of outdoor unit is set higher than indoor unit)
H s 20 m (66 ft.) (In case of outdoor unit is set lower than indoor unit)
height difference]
In branch box/indoor unit section (h1)
ht +h2 5 15 m (49 ft)
(one-way)
In each branch unit (h2)
h2 = 15 m (49 ft.)
In each indoor unit (h3)
h3 = 12 m (39 ft.)
Number of bends
| b1+al | , | b1+a2 | , |b1+a3 | , | bi+a4 | , |b1+a5 | , | b2+a6 | , | b2+a7 | , | b2+a8 |< 15
*{ Branch box should be placed within the level between the outdoor unit and indoor units.
5.2. Pipe length and height difference (Fig. 5-1)
Flared connections
* This unit has flared connections on each indoor unit and branch box and outdoor unit sides.
* Remove the valve cover of the outdoor unit, then connect the pipe.
* Refrigerant pipes are used to connect the branch box and outdoor unit.
6
Publicité
