LREQ5~20B7Y1
Air cooled refrigeration condensing unit
4PW74302-1D – 2016.11
Installation manual
2
• Do not touch the refrigerant piping, water piping or internal parts
during and immediately after operation. It could be too hot or too
cold. Give it time to return to normal temperature. If you must touch
it, wear protective gloves.
• Works executed on the outdoor unit are best done under dry
weather conditions to avoid water ingress.
• In accordance with the applicable legislation, it might be necessary
to provide a logbook with the product containing at least:
information on maintenance, repair work, results of tests, stand-by
periods,…
Also, at least, following information must be provided at an
accessible place at the product:
• Instructions for shutting down the system in case of an
emergency
• Name and address of fire department, police and hospital
• Name, address and day and night telephone numbers for
obtaining service
• In Europe, EN378 provides the necessary guidance for this
logbook.
CAUTION
• Carry out drain piping properly following this installation manual
and insulate the pipe to prevent condensation.
Improper drain piping may result in indoor water leakage and
property damage.
• Install the indoor and outdoor units, power cord and connecting
wires at least 1 meter away from televisions or radios to prevent
picture interference and noise.
(Depending on the incoming signal strength, a distance of 1 meter
may not be sufficient to eliminate noise.)
• Do not install the condensing unit in the following locations:
1. Where there is a high concentration of mineral oil spray or
vapour (e.g. a kitchen).
Plastic parts may deteriorate and cause parts to fall off or water
to leak.
2. Where corrosive gas, such as sulphurous acid gas, is produced.
Corrosion of copper pipes or brazed parts may occur and cause
refrigerant leakage.
3. Where there is a machine that generates electromagnetic wave
and where voltage fluctuation often occurs such as a factory.
Control system may malfunction and as a result the unit may
not properly operate.
4. Where flammable gas may leak, where carbon fibre or ignitable
dust is suspensions in the air, or where volatile flammables
such as paint thinner or gasoline are handled.
Operating the unit in such conditions may result in fire.
5. Vehicles, ships, or other places that generate vibration or cause
the condensing unit to move.
The condensing unit may malfunction or cause oxygen
deficiency accidents as a result of refrigerant leakage.
6. Places with excessive voltage fluctuations.
The condensing unit may malfunction.
7. Places where fallen leaves accumulate or weeds grow thick.
8. Places that become small animals’ shelter.
Small animals coming in contact with electrical parts can cause
malfunctions, smoke, or ignition.
• The condensing unit is not intended for use in a potentially
explosive atmosphere.
1-2 Special notice of product
This condensing unit comes under the term “appliances not
accessible to the general public”.
[CLASSIFICATION]
This condensing unit comes under the term “appliances not
accessible to the general public”.
Refer to the connected indoor unit to know the climate class
(EN60335-2-89).
[EMC CHARACTERISTICS]
This system is a class A product. In a domestic environment this
product may cause radio interference in which case the user may be
required to take adequate measures.
[REFRIGERANT]
This System use R410A refrigerant.
CAUTION
This unit is already filled with a certain amount of R410A.
Never open liquid and gas shutoff valve until the step specified in
"9. CHECKS AFTER WORK COMPLETION" on page 16
.
• The refrigerant R410A requires that strict precautions be observed
for keeping the system clean, dry and tightly sealed.
Read the chapter
"6. REFRIGERANT PIPING" on page 6
carefully
and follow these procedures correctly.
A.Clean and dry
Strict measures must be taken to keep impurities (including SUNISO
oil and other mineral oils as well as moisture) out of the system.
B.Tightly sealed
Take care to keep the system tight when installing.
R410A contains no chlorine, does not destroy the ozone layer
and so does not reduce the earth’s protection against harmful
ultraviolet radiation. R410A will contribute only slightly to the
greenhouse effect if released into the atmosphere.
• Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state. If the refrigerant is
charged in a state of gas, its composition changes and the system
will not work properly.
Be sure to perform refrigerant replenishment.
Refer to
"9. CHECKS AFTER WORK COMPLETION" on page 16
the label of instructions on refrigerant replenishment on the cover
surface of the control box, and
"12-1 Calculation method" on page 19
Important information regarding the refrigerant used
This product contains fluorinated greenhouse gases. Do not vent
gases into the atmosphere.
Refrigerant type: R410A
Global warming potential (GWP) value: 2087.5
To fix the fluorinated greenhouse gases label
1.
Fill in the label as follows:
1
If a multilingual fluorinated greenhouse gases label is delivered
with the unit (see accessories), peel off the applicable language
and stick it on top of
1
.
2
Factory refrigerant charge: see unit name plate
3
Additional refrigerant amount charged
4
Total refrigerant charge
5 Greenhouse gas emissions
of the total refrigerant charge
expressed as tonnes CO
2
-equivalent
6
GWP = Global warming potential
CAUTION
In Europe, the
greenhouse gas emissions
of the total
refrigerant charge in the system (expressed as tonnes CO
2
-
equivalent) is used to determine the maintenance intervals.
Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP
value of the refrigerant × Total refrigerant charge [in kg] / 1000
2.
Fix the label on the inside of the outdoor unit near the gas and
liquid stop valves.
[DESIGN PRESSURE]
Since design pressure is 3.8 MPa or 38 bar (for R407C units :
3.3 MPa or 33 bar), the wall thickness of pipes should be more
carefully selected in accordance with the relevant local and national
regulations.
1-3 Disposal requirements
Dismantling of the unit, treatment of the refrigerant, of oil and of other
parts must be done in accordance with relevant local and national
legislation.
2
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
1
6
3
4
5
4PWEN74302-1D.book Page 2 Thursday, April 27, 2017 9:01 PM
