Panasonic CS-F24DD2E5 / CS-F28DD2E5 / CS-F34DD2E5 / CS-F43DD2E5 / CS-F50DD2E5 / CU-L24DBE5 / CU-L28DBE5 / CU-L34DBE5 / CU-L43DBE5 / CU-L50DBE8 Service Manual ▷ View online
10.1.2. Refrigerant additional charge
• The piping length exceeds 30 metres.
APPLICABLE FOR ALL MODELS
Before shipment, this air conditioner is filled with the rated amount of refrigerant subject to 30m piping length. (The rated
amount of refrigerant is indicated on the name plate.) But when the piping length exceeds 30m, additional charge is required
according to the following table.
amount of refrigerant is indicated on the name plate.) But when the piping length exceeds 30m, additional charge is required
according to the following table.
Example :
CS-F24DD2E5
In case of 31m long pipe (one-way), the amount of refrigerant to be replenished is: (31 - 30) x 50 = 50g
CS-F24DD2E5
In case of 31m long pipe (one-way), the amount of refrigerant to be replenished is: (31 - 30) x 50 = 50g
Model Name
Standard piping specification
Liquid piping
(dia.mm)
Gas piping
(dia.mm)
Gas charge-
less length
(m)
Additional
gas volume
(g/m)
CU-L24DBE5
9.52
15.88
30
50
CU-L28DBE5
9.52
15.88
30
50
CU-L34DBE5
9.52
15.88
30
50
CU-L43DBE5
9.52
15.88
30
50
CU-L50DBE8
9.52
15.88
30
50
10.2. Position of the centre gravity
MODEL NAME
OUTSIDE DIMENSIONS
NET WEIGHT
CENTRE OF GRAVITY
WIDTH (mm)
DEPTH (mm)
HEIGHT (mm)
kg
X (mm)
Y (mm)
Z (mm)
CU-L24DBE5
900
320
795
71
560
150
320
CU-L28DBE5
900
320
795
71
560
150
320
CU-L34DBE5
900
320
1340
110
560
150
510
CU-L43DBE5
900
320
1340
110
560
150
510
CU-L50DBE8
900
320
1340
105
560
150
510
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This mark means “Caution” or “Warning”.
This mark means “Earth”.
10.3. Indoor unit installation
DUCT TYPE AIR CONDITIONERS INSTALLATION INSTRUCTIONS
Precautions in terms of safety
Carry out installation work with reliability after thorough reading of this “Precautions in terms of safety”.
• Precautions shown here are differentiated between
Warnings
and
Cautions . Those that have much chances for
leading to significant result such as fatality or serious injury if wrong installation would have been carried out are listed compiling
them especially into the column of
them especially into the column of
Warnings .
However, even in the case of items which are listed in the column of
Cautions , such items also have a chance for leading
to significant result depending on the situations.
In either case, important descriptions regarding the safety are listed, then observe them without fail.
• As to indications with illustration
• After installation work has been completed, do not only make sure that the unit is free from any abnormal condition through the
execution of trial run but also explain how to use and how to perform maintenance of this unit to the customer according to the
instruction manual.
instruction manual.
In addition, request the customer to keep this manual for installation work together with the instruction manual.
Warnings
The appliance must be installed by technician, who takes into
account the requirements given by ISO5149 or eventual
equivalent requirements.
account the requirements given by ISO5149 or eventual
equivalent requirements.
If installing inside a small room, measures should be taken to
prevent refrigerant levels from building up to critical
concentrations in the event of a refrigerant leak occurring.
Please discuss with the place of purchase for advice on what
measures may be necessary to prevent critical concentrations
being exceeded. If the refrigerant leaks and reaches critical
concentration levels, there is the danger that death from
suffocation may result.
prevent refrigerant levels from building up to critical
concentrations in the event of a refrigerant leak occurring.
Please discuss with the place of purchase for advice on what
measures may be necessary to prevent critical concentrations
being exceeded. If the refrigerant leaks and reaches critical
concentration levels, there is the danger that death from
suffocation may result.
As to installation, request the distributor or vendor to perform it.
Imperfection in installation caused by that having been carried
out by the customer himself may lead to water leakage, electric
shock, fire, etc.
Imperfection in installation caused by that having been carried
out by the customer himself may lead to water leakage, electric
shock, fire, etc.
Securely attach the protective covers for the outdoor unit
connection cables and power cord so that they do not lift up
after installation. If the covers are not properly attached and
installed, the terminal connections may overheat, and fire or
electric shock may result.
connection cables and power cord so that they do not lift up
after installation. If the covers are not properly attached and
installed, the terminal connections may overheat, and fire or
electric shock may result.
Carry out the installation work with reliability according to this
manual for installation work.
Imperfection in installation leads to water leakage, electric
shock, fire, etc.
manual for installation work.
Imperfection in installation leads to water leakage, electric
shock, fire, etc.
Switch off all supplies before accessing any electrical part.
Carry out the installation work with reliability on the place that
can bear the weight of this unit sufficiently. Insufficient strength
leads to injury due to falling of the unit.
can bear the weight of this unit sufficiently. Insufficient strength
leads to injury due to falling of the unit.
If refrigerant gas escapes during installation, ventilate the
affected area. If the refrigerant gas comes into contact with
sparks or naked flames, it will cause toxic gases to be
generated.
affected area. If the refrigerant gas comes into contact with
sparks or naked flames, it will cause toxic gases to be
generated.
Carry out predetermined installation work in preparation for
strong wind such as typhoon, earthquake.
Imperfection in installation work may lead to accidents arisen
from overturn, etc.
strong wind such as typhoon, earthquake.
Imperfection in installation work may lead to accidents arisen
from overturn, etc.
Once installation work is completed, check that there are no
refrigerant gas in the room that can come into contact with
sparks or flames from a fan heater, stove or kitchen range,
which will cause toxic gases to be generated.
refrigerant gas in the room that can come into contact with
sparks or flames from a fan heater, stove or kitchen range,
which will cause toxic gases to be generated.
The unit must be installed in accordance with applicable national
and local regulations.
Any electrical work should only be carried out by qualified
technician and use exclusive circuits without fail.
Presence of insufficient capacity in power circuit or imperfection
in execution leads to electric shock, fire, etc.
and local regulations.
Any electrical work should only be carried out by qualified
technician and use exclusive circuits without fail.
Presence of insufficient capacity in power circuit or imperfection
in execution leads to electric shock, fire, etc.
When performing piping work do not mix air except for specified
refrigerant (R410A) in refrigeration cycle. It causes capacity
down, and risk of explosion and injury due to high tension inside
the refrigerant cycle.
refrigerant (R410A) in refrigeration cycle. It causes capacity
down, and risk of explosion and injury due to high tension inside
the refrigerant cycle.
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NO.
Parts name
Q’ty
1
Thermal insulator for refrigerant pipe
2
2
Hose clip for thermal insulator
5
3
M10 Flange washer
4
4
M10 Flat washer
4
5
Thermal insulator for drainage hole
1
6
Flexible hose
1
Warnings
Wiring shall be connected securely using specified cables and
fix them securely so that external force of the cables may not
transfer to the terminal connection section.
Imperfect connection and fixing leads to fire, etc.
fix them securely so that external force of the cables may not
transfer to the terminal connection section.
Imperfect connection and fixing leads to fire, etc.
Cautions
Carry out Earthing work.
Do not connect the Earth return to the gas pipe,
water line pipe, lightning rod and telephone lines.
Imperfection in Earth return may lead to electric
shock.
Do not connect the Earth return to the gas pipe,
water line pipe, lightning rod and telephone lines.
Imperfection in Earth return may lead to electric
shock.
Drain piping should be made to ensure secure drainage
according to the manual for installation work and carry out the
thermal insulation to prevent the occurrence of condensation.
Imperfection in piping work leads to water leakage and may
cause the house and property, etc. to become wet
according to the manual for installation work and carry out the
thermal insulation to prevent the occurrence of condensation.
Imperfection in piping work leads to water leakage and may
cause the house and property, etc. to become wet
Do not install the unit at the place where the possibility of
inflammable gas leakage exists. If such gas leakage should arise
and the gas builds up around the unit, such situation may lead to
ignition.
inflammable gas leakage exists. If such gas leakage should arise
and the gas builds up around the unit, such situation may lead to
ignition.
Position the indoor unit, outdoor unit, power cords and
indoor/outdoor unit connection cables in a way so that they are
at least 1 meter away from televisions and radios.
This is to avoid problem such as interference with picture and/or
sound. (However, note that depending on the electromagnetic
wave conditions, interference may still occur even if the
separation distance is more than 1 meter.)
indoor/outdoor unit connection cables in a way so that they are
at least 1 meter away from televisions and radios.
This is to avoid problem such as interference with picture and/or
sound. (However, note that depending on the electromagnetic
wave conditions, interference may still occur even if the
separation distance is more than 1 meter.)
Mounting of the earth leakage circuit breaker is required.
Omission in mounting of the earth leakage circuit breaker may
lead to electric shock.
Omission in mounting of the earth leakage circuit breaker may
lead to electric shock.
10.3.1. Accessories packed in the indoor unit container
10.3.2. Selecting the location for the indoor unit
Provide a check port on the piping side ceiling for repair and maintenance.
• Install the indoor unit once the following conditions are satisfied and after receiving the customer approval.
1. The indoor unit must be within a maintenance space.
2. The indoor unit must be free from any obstacles in path of the air inlet and outlet, and must allow spreading of air throughout
the room.
*If the height from the floor to ceiling exceeds three meters, air flow distribution deteriorates and the effect is decreased.
3. The installation position must be able to support a load four times the indoor unit weight.
Warnings
4. The indoor unit must be away from heat and steam sources, but avoid installing it near an entrance.
5. The indoor unit must allow easy draining.
6. The indoor unit must allow easy connection to the outdoor unit.
7. Place the indoor unit easy water drainage. (Suitable dimension “H” is necessary to get slop to drain as figure.)
8. The indoor unit must be from at least 3m away from any noise-generating equipment. The electrical wiring must be shielded
with a steel conduit.
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9. If the power supply is subject to noise generation, add a suppressor.
10. Do not install the indoor unit in a laundry. Electric shocks may result.
Note
• Thoroughly study the following installation locations.
1. In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the turbo fan, the fin
of the heat exchanger and the drain pump, resulting in heat exchange reduction, spraying, dispersing of water drops,
drain pump malfunction, etc.
drain pump malfunction, etc.
In these cases, take the following actions:
− Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient capacity so that it draws
oily steam which should not flow into the suction of the air conditioner.
− Make enough distance from the cooking room to install the air conditioner in such place where it may not suck in oily
steam.
2. Avoid installing the air conditioner in such circumstances where cutting oil mist or iron powder exist especially in
factories, etc.
3. Avoid places where inflammable gas is generated, flows-in, contaminated, or leaked.
4. Avoid places where sulphurous acid gas or corrosive gas can be generated.
5. Avoid places near high frequency generators.
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