Table of Contents
Advertisement
3. INSTALLATION WORK
Please obtain the approval of the customer when selecting the location of installation
and installing the main unit.
3. 1.
Selecting an installation location
WARNING
Install the unit in a location that can withstand its weight, and where it will not topple
or fall.
Calculate the proper refrigerant concentration if you will be installing it in an enclosed
location.
Total amount of replenished refrigerant
in refrigerant facility [lb. (kg)]
Capacity of smallest room where unit
is installed [Mcf (m³)]
If the results of the calculation exceed the concentration limit, increase the room
surface area or install a ventilation duct.
CAUTION
Select an installation location by observing the following precautions:
Install the unit level. (Within 3 degrees)
Install this unit in a location with good ventilation.
If the unit must be installed in an area within easy reach of the general public, install
as necessary a protective fence or the like to prevent their access.
Install the unit in an area that would not inconvenience your neighbors, as they could
be affected by the airfl ow coming out from the outlet, noise, or vibration.
If it must be installed in proximity to your neighbors, be sure to obtain their approval.
If the unit is installed in a cold region that is affected by snow accumulation, snow fall,
or freezing, take appropriate measures to protect it from those elements.
To ensure a stable operation, install inlet and outlet ducts.
Install the unit in an area that would not cause problems even if the drain water is
discharged from the unit. Otherwise, provide drainage that would not affect people or
objects.
Install the unit in an area that has no heat sources, vapors, or the risk of the leakage
of fl ammable gas in the vicinity.
Install the unit in an area that is away from the exhaust or vent ports that discharge
vapor, soot, dust, or debris.
Install the indoor unit, outdoor unit, power supply cable, transmission cable and
remote control cable at least 40 in (1 m) away from a television or radio.
The purpose of this is to prevent TV reception interference or radio noise. (Even if
they are installed more than 40 in (1 m) apart, you could still receive noise under
some signal conditions.)
Keep the length of the piping of the indoor and outdoor units within the allowable
range.
For maintenance purposes, do not bury the piping.
3. 2.
Drain processing
• The drain water is discharged from the bottom of the equipment. Construct a drain
ditch around the base and discharge the drain water properly.
• When installing on a roof, perform fl oor waterproofi ng properly.
Drain processing:
• The drain water from the base of the outdoor unit may generate during operations.
Perform drain processing, as necessary.
• When you want to prevent the drain water from leaking at the perimeter, construct
a ditch for the drain water as shown in the fi gure.
• Provide a central drain pan, as necessary.
<Top view>
Outdoor unit
2 in
(50 mm)
or more
3. 3.
Installation dimensions
CAUTION
When installing the outdoor unit, pay attention to the following items.
Provide suffi cient installation space, such as transportation route, maintenance
space, ventilation space, refrigerant piping space, and passageways.
Pay attention to the specifi cations of the installation space as shown in the fi gure. If
the unit is not installed according to specifi cations, it may cause short circuit or poor
performance. The unit may be prone to lapse into non-operation due to high pres-
sure protection.
Refrigerant concentration [lb/Mcf (kg/m³)]
≤
[25 lb/Mcf (0.39 kg/m³)]
<Front view>
1 in (10 mm) or more
CAUTION
Do not place obstructions in the air fl ow outlet direction. If there is an obstruction in
the outlet direction, install an outlet duct.
When there is a wall in front of the unit, provide a space of 20 in (500 mm) or more
as maintenance space.
When there is a wall at the left side of the unit, provide a space of 2 in (30 mm) or
more as maintenance space.
An outdoor temperature of 95 °F (DB) (35 °C (DB)) in air-conditioned operation is
assumed for the installation space in this item. If the outdoor temperature exceeds
95 °F (DB) (35 °C (DB)) and the outdoor unit is operating at a load exceeding its
rated ability, provide a larger inlet space.
If you are installing more outdoor units than indicated here, please ensure suffi cient
space or consult your distributing agent as it may affect the performance due to
short circuit and other problems.
3. 3. 1.
When install near by limited height wall
(1) Single and multiple installations
• There are no restrictions on the height of the side wall.
• Provide installation spaces L1 and L2 in accordance with the table below according
to the wall height (front side, rear side) conditions.
• Provide installation spaces other than L1 and L2 in accordance with the conditions
shown in the fi gure below.
• Ventilation resistance can be ignorable when the distance from a wall or product,
etc. is larger than 79 in (2 m).
Wall height condition
When H1 is 59 in (1500 mm) or less
When H1 is 59 in (1500 mm) or more
When H2 is 19 in (500 mm) or less
When H2 is 19 in (500 mm) or more
Fig. 1
<Side view>
<Front>
59 in
(1500 mm)
L1
Wall
Fig. 2
Single installation
<Top view>
<Rear>
<Front>
2 in
(30 mm)
or more
Fig. 3
Multiple installations
<Rear>
<Front>
2 in
1 in
(30 mm)
(20 mm)
or more
or more
(2) Concentrated installation
• Provide installation spaces L3, L4, and L5 in accordance with the table below ac-
cording to the wall height (front side, rear side) conditions.
• Provide installation spaces other than L3, L4, and L5 in accordance with the condi-
tions shown in the fi gure below.
• Ventilation resistance can be ignorable when the distance from a wall or product,
etc. is larger than 79 in (2 m).
Necessary installation space
L1 ≥ 20 in (500 mm)
L1 ≥ 20 in + h1 ÷ 2
(L1 ≥ 500 mm + h1 ÷ 2)
L2 ≥ 4 in (100 mm)
L2 ≥ 4 in + h1 ÷ 2
(L2 ≥ 100 mm + h1 ÷ 2)
<Rear>
19 in
(500 mm)
L2
Wall
1 in
(10 mm)
or more
<Top view>
1 in
1 in
(20 mm)
(10 mm)
or more
or more
En-4
Advertisement
Table of Contents
