Daikin LREQ15B7Y1R, LREQ20B7Y1R Operation manuals
OPERATION MANUAL
Air cooled refrigeration condensing unit
LREQ15B7Y1R
LREQ20B7Y1R
WARNING
LREQ15B7Y1R
LREQ20B7Y1R
CONTENT
Air cooled refrigeration condensing unit
Operation manual
1. SAFETY PRECAUTIONS.......................................................... 1
2. NAME OF PART........................................................................ 3
In the case of LREQ15, LREQ20 ...........................................3
3. SYSTEM CONFIGURATION..................................................... 3
3-1 Air cooled condensing unit................................................. 3
3-2 Other configuration equipment........................................... 3
4. METHOD OF OPERATION/STOP ............................................ 3
5. BETTER USE ............................................................................ 3
5-1 Turn off the power.............................................................. 3
5-2 Install an alarm................................................................... 3
6. CARE AND CLEANING METHOD ............................................ 4
7. TROUBLESHOOTING .............................................................. 4
7-1 The following cases are not malfunctions. ......................... 4
7-2 Check before requesting servicing..................................... 4
7-3 Consult your dealer in the following cases......................... 4
8. INSPECTION............................................................................. 4
9. PRODUCT MODELS AND MAIN SPECIFICATIONS ............... 5
9-1 Models and Main Specifications. ....................................... 5
10. AFTER-SALE SERVICE............................................................ 6
10-1 After-sale service ............................................................... 6
10-2 Onerous repairs (Outside scope of warranty coverage) .... 6
The English text is the original instruction. Other languages are
translations of the original instructions.
Thank you for purchasing this Daikin condensing unit. Carefully read
this operation manual before using the condensing unit. It will tell you
how to use the unit properly and help you if any trouble occurs.
Important information regarding the refrigerant used
This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol. Do not vent gases into the atmosphere.
Refrigerant type : R410A
(1)
value : 1975
GWP
(1)
GWP = global warming potential
(Values are indicated in F-gas Regulations, Appendix I, parts 1 and 2.)
Periodical inspections for refrigerant leaks may be required depending
on European or local legislation.
Please contact your local dealer for more information.
1. SAFETY PRECAUTIONS
To gain full advantage of the condensing unit’s functions and to avoid
malfunction due to mishandling, please read this operation manual
carefully before use.
This condensing unit is classified under “appliances not accessible to
the general public”.
•
The precautions described herein are classified as WARNING
and CAUTION. They both contain important information
regarding safety. Be sure to observe all precautions without fail.
WARNING ................ Failure to follow these instructions
properly may result in personal injury or
loss of life.
CAUTION ................. Failure to observe these instructions
properly may result in property damage
or personal injury, which may be serious
depending on the circumstances.
• After reading, keep this manual in a convenient place so that
you can refer to it whenever necessary. If the equipment is
transferred to a new user, be sure also to hand over the
manual.
Be aware that prolonged, direct exposure to cool or warm air
from the air conditioner, or to air that is too cool or too warm
can be harmful to your physical condition and health.
When the condensing unit is malfunctioning (giving off a
burning odour, etc.) turn off the power to the unit and
contact your local dealer.
Continued operation under such circumstances may result in a
failure, electric shocks or fire hazards.
Consult your local dealer about installation work.
Doing the work yourself may result in water leakage, electric
shocks or fire hazards.
Consult your local dealer regarding modification, repair and
maintenance of the condensing unit.
Improper workmanship may result in water leakage, electric
shocks or fire hazards.
Do not place objects, including rods, your fingers, etc., in the
air inlet or outlet.
Injury may result due to contact with the condensing unit’s
highspeed fan blades.
Never touch the air outlet or the horizontal blades while the
swing flap is in operation.
Fingers may become caught or the unit may break down.
Beware of fire in case of refrigerant leakage.
If the condensing unit is not operating correctly (i.e. the interior
temperature of the condensing unit does not drop efficiently),
refrigerant leakage could be the cause.
Consult your dealer for assistance.
The refrigerant used for the condensing unit is safe and normally
does not leak.
However, if the refrigerant leaks and gets in contact with a naked
burner, heater or cooker, it may generate hazardous compounds.
Turn off the condensing unit and call the dealer. Make sure to turn
on the condensing unit after the qualified service person confirms
that the leakage is repaired.
Consult your local dealer regarding what to do in case of
refrigerant leakage.
When the condensing unit is to be installed in a small room, it is
necessary to take proper measures so that the amount of any
leaked refrigerant does not exceed the concentration limit in the
event of a leakage. Otherwise, this may lead to an accident due
to oxygen depletion.
Contact professional personnel about attachment of
accessories and be sure to use only accessories specified
by the manufacturer.
If a defect results from your own workmanship, it may result in
water leaks, electric shock or fire.
Consult your local dealer regarding relocation and
reinstallation of the condensing unit.
Improper installation work may result in leakage, electric shocks
or fire hazards.
Be sure to use fuses with the correct ampere reading.
Do not use improper fuses, copper or other wires as a substitute,
as this may result in electric shock, fire, injury or damage to the
unit.
Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in electric
shocks or fire.
Be sure to earth the unit.
Do not earth the unit to a utility pipe, lightning conductor or
telephone earth lead. Imperfect earthing may result in electric
shocks or fire.
A high surge current from lightning or other sources may cause
damage to the condensing unit.
Consult the dealer if the condensing unit submerges owing to
a natural disaster, such as a flood or typhoon.
Do not operate the condensing unit in that case, or otherwise a
malfunction, electric shock, or fire may result.
Start or stop the air conditioner with the remote controller.
Never use the power circuit breaker for this purpose.
Otherwise, it may cause fire or water leakage.
Furthermore, because power failure compensation is set, the fan
will rotate abruptly, which may result in injury.
Do not use the product in the atmosphere contaminated with
oil vapor, such as cooking oil or machine oil vapor.
Oil vapor may cause crack damage, electric shocks, or fire.
Operation manual
1
Air cooled refrigeration condensing unit
LREQ15+20B7Y1R
4P362763-1B – 2014.01
Do not use the product in places with excessive oily smoke,
CAUTION
such as cooking rooms, or in places with flammable gas,
corrosive gas, or metal dust.
Using the product in such places may cause fire or product
failures.
Do not use flammable materials (e.g., hairspray or insecticide)
near the product.
Do not clean the product with organic solvents such as paint
thinner.
The use of organic solvents may cause crack damage to the
product, electric shocks, or fire.
Do not keep in the unit anything volatile or flammable.
Doing so may result in explosion or fire.
Be sure to use a dedicated power supply for the condensing
unit.
The use of any other power supply may cause heat generation,
fire, or product failures.
Consult your dealer regarding cleaning the inside of the
condensing unit.
Improper cleaning may cause breakage of plastic parts, water
leakage and other damage as well as electric shocks.
Do not use the condensing unit for purposes other than
those for which it is intended.
Do not use the condensing unit for cooling precision instruments,
works of art as this may adversely affect the performance, quality
and/or longevity of the object concerned.
Do not use the unit for water cooling use.
Freezing may result.
Do not remove the unit’s fan guard.
The guard protects against the unit’s high speed fan, which may
cause injury.
Do not locate around the unit anything that must stay dry.
Doing so may wet the area resulting from condensed water from the
unit.
After prolonged use, check the unit stand and its mounts for
damage.
If left in a damaged condition, the unit may fall and cause injury.
Do not place flammable sprays or operate spray containers
near the unit as this may result in fire.
Do not put flammable containers, such as spray cans, within
1 m from the air outlet.
The containers may explode because the warm air output of the
indoor or outdoor unit will affect them.
Before cleaning, be sure to stop unit operation, turn the
power circuit breaker off or remove the power cord.
Otherwise, an electric shock and injury may result.
To avoid electric shocks, do not operate with wet hands.
Do not allow a child to mount on the outdoor unit or avoid
placing any object on it.
Falling or tumbling may result in injury.
Do not wash the condensing unit with water, as this may
result in electric shocks or fire.
Do not place water containers (flower vases, flowerpot, etc.)
on the unit, as this may result in electric shocks or fire.
Do not install the condensing unit at any place where there is
a danger of flammable gas leakage.
In the event of a gas leakage, build-up of gas near the condensing
unit may result in fire hazards.
Perform drain piping to ensure perfect drainage.
Imperfect drainage may result in water leakage.
The appliance is not intended for use by unattended young
children or persons who are incompetent to operate
condensing unit.
It may result in injury or electric shock.
Children should be watched so that they do not play with the
unit.
Accidental operation by a child may result in injury or electric shock.
To avoid injury, do not touch the air inlet or aluminium fins of
the unit.
Do not place objects in direct proximity of the condensing
unit and do not let leaves and other debris accumulate
around the unit.
Leaves are a hotbed for small animals which can enter the unit.
Once in the unit, such animals can cause malfunctions, smoke or
fire when making contact with electrical parts.
Do not block air inlets nor outlets.
Impaired airflow may result in insufficient performance or trouble.
Do not let children play on or around the outdoor unit.
If they touch the unit carelessly, injury may be caused.
Turn off the power when the unit is not to be used for long
periods of time.
Otherwise, the unit may get hot or catch on fire due to dust
accumulation.
Do not touch the aluminium fin directly at the time of
cleaning.
Doing so may result in injury.
[Installation site]
Is the unit installed in a well-ventilated place with no obstacles
around?
Do not use the product in the following places.
a. Places with mineral oil, such as cutting oil.
b. Places directly exposed to seawater spray and briny air.
c. Places where sulphide gas is generated, such as hot springs.
d. Places with radical voltage fluctuations, such as factories.
e. In vehicles or on board ships.
f. Places with sprays of oil or excessive steam, such as kitchens.
g. Places with machines generating electromagnetic waves.
h. Places with acid gas, alkaline gas, or steam.
i. Places with poor drainage.
j. Places in potentially explosive atmosphere.
Install the unit, power supply wiring, transmission wiring and
refrigerant piping at least 1.5 meter away from televisions,
radios and stereo sets.
Otherwise, the picture and sound may be interfered with noise.
Are snow protection measures taken?
For detailed arrangements, such as the installation of a snow
protection hood, consult your dealer.
Is there no clearance around the through hole between the
internal and external units?
The chilled air will leak from the clearance and the cooling efficiency of
the unit will be degraded.
Is service space secured?
If the target evaporating temperature is ≤–20°C, adding refrigerant oil
may be required. Failure to do so may lead to compressor
malfunction. If you change the target evaporating temterature from
≥–20°C to ≤–20°C, it may also be required to add refrigerant oil. In this
case, contact your dealer.
After refrigerant oil has been added, the target evaporating
temperature cannot be changed to ≥–20°C.
Refer to the installation manual for more information.
[Electrical work]
Do not attempt to conduct electrical work or grounding work
unless you are licensed to do so.
Consult with your dealer for electrical work and grounding work.
Check that the power supply is suitable to the unit and that an
exclusive circuit is provided to the unit.
Check the electric capacity and voltage.
Refer to the installation manual for more information.
[Refrigerant]
• This product contains fluorinated gases covered by the Kyoto
protocol.
Type of refrigerant: R410A, GWP value: 1975
Periodical inspections on refrigerant leakages may be required
depending on European or local legislation. Please contact your
installer for more information.
• The total maximum refrigerant charge of a Multi-ZEAS system
must be less than 100 kg, this to be in accordance with CE
requirements (EN603350-2-40 standard). This means that in case
the calculated total refrigerant charge is equal to or more than
95 kg you must divide your multiple outdoor system into smaller
independent systems, each containing less than 95 kg refrigerant
charge.
LREQ15+20B7Y1R
Air cooled refrigeration condensing unit
4P362763-1B – 2014.01
Operation manual
2
2. NAME OF PART
CAUTION
Air outlet
Fan
Air inlet
Heat exchanger
(aluminium fin)
Transmission
wiring
Refrigerant
piping
Earth wire
A wire that makes the system
safe by connecting the outdoor
unit to the ground for the
prevention of electric shocks
or fire resulting from electric
leakage.
Power supply wires
(to dedicated earth
leakage breaker)
OFF
REMOTE
ON
OFF
REMOTE
ON
OFF
In the case of LREQ15, LREQ20
4. METHOD OF OPERATION/STOP
Preparations
• Turn on all the configuration
equipment.
• Be sure to turn on the power at least 6
hours before starting the operation of
the equipment for the machinery
protection.
1. Set the operation switch of the master unit to ON.
Stop
2. Set the operation switch of the master
unit to OFF.
To start operation
To stop operation
3. SYSTEM CONFIGURATION
The condensing unit has the following system configuration.
3-1 Air cooled condensing unit
Name Master unit Slave unit
Shape
3-2 Other configuration equipment
Indoor unit
Name
Unit cooler Showcase
Shape
Name
Unit cooler Showcase
Shape
For other configuration equipment, refer to the Operation
Manuals of the respective pieces of equipment.
Refrigeration
Indoor unit
Freezing
Defrost control
panel
The unit must go through a stop movement before the unit is
turned power off.
Be sure to turn off the breaker after the operation switch is turned
off. It is not possible to start and stop the system by operating the
operation switch of the slave unit.
Note:
• The use of a remote switch is recommended if the operation of the
unit is stopped frequently.
Request your dealer for the installation of the remote switch.
5. BETTER USE
5-1 Turn off the power if the unit is not operated for
a long time.
The unit will consume a power of several watts to several tens
of watts if the power is on (see note).
For the purpose of machine protection, however, be sure to turn
on the power at least 6 hours before resuming the operation of
the unit.
Note: The power consumption of the unit varies with the
operating factors, such as the condensing unit model.
5-2 Install an alarm if operational errors are likely
to degrade the commodities in storage.
The unit is provided with a terminal to output an alarm signal.
If the system should malfunction and there is no alarm, the
operation of the unit will be interrupted for a long time and
damage to the commodities in storage may result.
The installation of an alarm is recommended in order to take
appropriate measures promptly in such cases.
For details, consult your dealer.
Operation manual
3
Air cooled refrigeration condensing unit
LREQ15+20B7Y1R
4P362763-1B – 2014.01
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