Installation manual
1
LREQ5~20B7Y1
Air cooled refrigeration condensing unit
4PW74302-1D – 2016.11
CONTENT
1. INTRODUCTION ....................................................................... 1
1-1 Safety precautions ............................................................. 1
1-2 Special notice of product.................................................... 2
1-3 Disposal requirements ....................................................... 2
2. BEFORE INSTALLATION.......................................................... 3
3. SELECTION OF LOCATION ..................................................... 4
4. HANDLING THE UNIT .............................................................. 5
5. PLACING THE UNIT ................................................................. 5
6. REFRIGERANT PIPING............................................................ 6
6-1 Selection of piping material................................................ 7
6-2 Protection against contamination when installing pipes..... 8
6-3 Pipe connection ................................................................. 8
6-4 Drier installation ................................................................. 8
6-5 Connecting the refrigerant piping....................................... 8
7. FIELD WIRING .........................................................................11
7-1 Example of wiring entire system ...................................... 12
7-2 Procedure for incoming wiring ......................................... 12
7-3 Procedure for power supply wiring................................... 13
7-4 Procedure for wiring inside units...................................... 14
8. INSPECTION AND PIPE INSULATION .................................. 15
8-1 Airtight test/vacuum drying............................................... 15
8-2 Thermal insulation work ................................................... 15
8-3 Checking of device and installation conditions ................ 16
9. CHECKS AFTER WORK COMPLETION................................ 16
10. REFRIGERANT REPLENISHMENT ....................................... 16
11. TEST RUN............................................................................... 18
12. ADDITIONAL REFRIGERANT AMOUNT................................ 19
12-1 Calculation method .......................................................... 19
The English text is the original instruction. Other languages are
translations of the original instructions.
1. INTRODUCTION
• This document is an installation manual for the Daikin Air Cooled
Refrigeration Condensing Unit. Before installing the unit, read this
manual thoroughly, and following the instructions contained in it.
After installation, do a test run to make sure the unit runs properly,
and then explain how to operate and take care of the unit to the
customer, using the operation manual.
• Lastly, make sure the customer keeps this manual, along with the
operation manual, in a safe place.
• This manual does not describe how to install the indoor unit.
Refer to the installation manual included with the indoor unit for
that.
1-1 Safety precautions
Please read these “Safety precautions” carefully before installing
condensing unit and be sure to install it correctly.
Meaning of WARNING and CAUTION notices
Both are important notices for safety. Be sure to follow them.
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 circum-
stances.
After completing installation, conduct a test operation to confirm that
the equipment operates without any problems. Then, explain to the
customer how to operate the equipment and take care of it following
the operation manual.
Ask the customer to store the installation manual along with the
operation manual for future reference.
WARNING
• Ask your dealer or qualified personnel to carry out installation work.
Do not attempt to install the condensing unit yourself. Improper
installation may result in water leakage, electric shocks or fire.
• Install the condensing unit in accordance with the instructions in
this installation manual.
Improper installation may result in water leakage, electric shocks or fire.
• When installing the unit in a small room, take measures so that the
refrigerant may not exceed the limiting concentration in the event
of refrigerant leakage.
Contact your dealer for further information. If the refrigerant leaks and
exceeds the limiting concentration, it may lead to oxygen deficiency.
• Be sure to use only the specified accessories and parts for
installation work.
Failure to use the specified parts may result in the unit falling, water
leakage, electric shocks or fire.
• Install the condensing unit on a foundation strong enough to
withstand the weight of the unit.
If a foundation does not have sufficient strength, the equipment
may fall and cause injury.
• Carry out the required installation work in consideration of strong
winds, typhoons or earthquakes.
If the installation work is not properly carried out, the unit may fall
down and cause accidents.
• The electrical work must be carried out by the qualified electrician in
accordance with the local laws and regulations and this installation
manual. Make sure to provide a dedicated power supply circuit and
never connect additional wiring to the existing circuit.
An insufficient power supply capacity or improper electrical work
may lead to electric shocks or fire.
• Be sure to earth the condensing 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.
• 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 switch off the unit before touching any electrical parts.
Touching a live part may result in electric shock.
• For wiring, use the specified wires and connect and fasten them
firmly so that no external force from the wires may be applied to the
terminal connections.
If the wires are not firmly connected and fastened, it may cause
heating, fire or the like.
• When wiring the power supply and connecting transmission wiring,
position the wires so that the control box lid can be securely fastened.
Improper positioning of the control box lid may result in electric
shocks, fire or the terminals overheating.
• If refrigerant gas leaks during installation, ventilate the area
immediately.
Toxic gas may be produced if the refrigerant comes into contact
with fire.
• After completing installation, check for refrigerant gas leakage.
Toxic gas may be produced if the refrigerant gas leaks into the
room and comes into contact with a source of fire, such as a fan
heater, stove or cooker.
• Do not directly touch refrigerant that has leaked from refrigerant
pipes or other areas, as there is a danger of frostbite.
• Do not allow children to climb on the outside unit and avoid placing
objects on the unit.
Injury may result if the unit becomes loose and falls.
• Tear apart and throw away plastic packaging bags so that nobody,
especially children, can play with them. Possible risk: suffocation.
LREQ5B7Y1
LREQ12B7Y1
LREQ6B7Y1
LREQ15B7Y1
LREQ8B7Y1
LREQ20B7Y1
LREQ10B7Y1
Air cooled refrigeration condensing unit
Installation manual
4PWEN74302-1D.book Page 1 Thursday, April 27, 2017 9:01 PM
