Daikin LCBKQ3AV1 Installation Manual Download Page 5

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Installation manual

Clamps

2-3 Indoor Unit Constraints

• The design pressure for the indoor unit is 2.5 MPa or more.
• Install an R410A mechanical thermostatic expansion valve on

each indoor unit.

• Insulate the feeler block of the mechanical thermostatic expan-

sion valve.

• Install an R410A solenoid valve on the primary side of the

mechanical thermostatic expansion valve (Max. operating differ-
ential pressure of 3.5 MPa [35 bars] or over) described above for
each indoor unit.

• Install a filter on the primary side of the solenoid valve described

above for each indoor unit. Determine the filter mesh count based
on the size specified by the solenoid valve and mechanical ther-
mostatic expansion valve being used.

• Route the path to the indoor unit heat exchanger so that the flow

of refrigerant is from top to bottom.

• When installing a number of indoor units, be sure to install them at

the same level.

• Use the electric heater defrosting as the defrosting type. Hot-gas

defrosting models cannot be used.

SELECTION OF LOCATION

Select a location for installation that meets the following conditions.
Get the customer’s permission.

There is no danger of fire due to leakage of inflammable gas.

Select the location of the unit in such a way that the sound gener-
ated by the unit disturb anyone.

The foundation is strong enough to support the weight of the unit
and the floor is flat to prevent vibration and noise generation.

The piping length between the booster unit and outdoor unit or
between the booster unit and indoor unit may not exceed the
allowable piping length. (Refer to

“

REFRIGERANT PIPING

”)

When installing the unit outdoors, install it preferably in a location
that is not exposed to rain.

The space around the unit is adequate for servicing and the min-
imum space for air inlet and air outlet is available.
(See the “Installation Space Examples” for the minimum space
requirements.)

Installation Space Examples

• During installation, install the units using the most appropriate of

the patterns shown in the following figure for the location in ques-
tion, taking into consideration human traffic and wind.

• As regards space in front of the unit, consider the space needed

for the local refrigerant piping when installing the units.

• If the work conditions in the following figure do not apply, contact

your dealer or Daikin directly.

CAUTION

An inverter booster unit may cause electronic noise generated
from AM broadcasting. Examine where to install the main booster
unit and electric wires, keeping proper distances away from ste-
reo equipment, personal computers, etc.
Particularly for locations with weak reception, ensure there is a
distance of at least 3 meters for indoor remote controllers, place
power wiring and transmission wiring in conduits, and ground the
conduits.

If condensate may drip on downstairs (or walkway) depending on
the floor condition, take a measure such as the installation of
drain pan kit (sold separately).

The refrigerant R410A itself is nontoxic, nonflammable and is
safe. If the refrigerant should leak however, its concentration may
exceed the allowable limit depending on room size. Due to this it
could be necessary to take measures against leakage.
See “Engineering Data” for details.

PLACING THE UNIT

4-1 Handling the Unit

Decide on the transportation route.

If hanging the unit, use a cloth sling to prevent damaging the unit.
Keeping the following points in mind, hang the unit following the
procedure shown in the following figure.

• Use the slings bearing product mass enough.
• Lift the unit with 2 belts of the at least 4m long.
• Put cushion cloth where the slings contact the casing.
• Lift the product with cave at the product center of gravity posi-

tion.

If using the handle of unit, carry the unit slowly with having the
handle.

1, 2

<When installed

as a single unit>

Piping slot

Booster unit

≥

500mm

≥

500mm

≥