Handleiding
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2 Specific installer safety instructions
Installation and operation manual
5
LREN8~12A + LRNUN5A
CO₂ ZEAS outdoor unit and capacity up unit
4P704141-1F – 2024.12
WARNING
▪ Install all necessary countermeasures in case of
refrigerant leakage according to standard EN378 (see
"12.1.3Additional installation site requirements for CO₂
refrigerant"[417]).
▪ Install a CO
2
leak detector (field supply) in every room
with refrigerant piping, showcases or blower coils, and -
if present - enable the function for refrigerant leak
detection (see the installation manual of the indoor
units).
WARNING
In case of mechanical ventilation, take care the ventilated
air is exhausted to the outdoor space and NOT into
another closed area.
WARNING
When using safety shut-off valves, make sure to install
measures such as a bypassing piping with a pressure relief
valve (from liquid pipe to gas pipe). When the safety shut-
off valves close and no measures are installed, increased
pressure may damage the liquid piping.
WARNING
Install the unit ONLY in locations where the doors of the
occupied space are NOT tight fitting.
CAUTION
Appliance NOT accessible to the general public, install it in
a secured area, protected from easy access.
The equipment meets the requirements for commercial
and light-industrial locations when professionally installed
and maintained.
CAUTION
This equipment is NOT intended for use in residential
locations and will NOT guarantee to provide adequate
protection to radio reception in such locations.
CAUTION
If the safety valve operates inside the unit, CO
2
gas may
concentrate inside the casing of the outdoor unit.
Therefore, you should ALWAYS take a distance for your
own safety. You can close the outdoor unit if your portable
CO
2
detector confirmed that the concentration of CO
2
is at
an acceptable level. For example, if 7kg CO
2
is released
inside the casing, it takes around 5 minutes until the
concentration of CO
2
is low enough.
Piping installation (see "13Piping installation"[421])
DANGER: RISK OF BURNING/SCALDING
WARNING
The unit contains small amounts of refrigerant R744.
WARNING
Any gas or oil remaining inside the stop valve may blow off
the spun piping.
If these instructions are NOT followed correctly it may
result in property damage or personal injury, which may be
serious depending on the circumstances.
WARNING
NEVER remove the spun piping by brazing.
Any gas or oil remaining inside the stop valve may blow off
the spun piping.
WARNING
When stop valves are closed during service, the pressure
of the closed circuit will increase due to high ambient
temperature. Make sure the pressure is kept below the
design pressure.
WARNING
ONLY connect the outdoor unit to showcases or blower
coils with a design pressure:
▪ At the high pressure side (liquid side) of 90bar gauge.
▪ At the low pressure side (gas side) of 60bar gauge (is
possible with safety valve at field gas piping).
WARNING
▪ ONLY use R744 (CO
2
) as refrigerant. Other substances
may cause explosions and accidents.
▪ When installing, charging refrigerant, maintaining or
performing service, ALWAYS use personal protective
equipment, such as safety shoes, safety gloves and
safety glasses.
▪ If the unit is installed indoors (for example, in a
machine room), ALWAYS use a portable CO
2
detector.
▪ If the front panel is open, ALWAYS beware of the
rotating fan. The fan will continue rotating for a while,
even after the power switch has been turned off.
WARNING
▪ Use K65 or equivalent piping for high-pressure
applications with a working pressure of 90bar gauge.
▪ Use K65 or equivalent unions and fittings approved for
a working pressure of 90bar gauge.
▪ ONLY brazing is allowed to connect pipes. No other
types of connections are allowed.
▪ Expanding pipes is NOT allowed.
WARNING
Serious injury and/or damage can result from the blow-off
of the liquid receiver safety valve (see "19.1 Piping
diagram: Outdoor unit"[448]):
▪ NEVER service the unit when the pressure at the liquid
receiver is higher than the set pressure of the liquid
receiver safety valve (90bar gauge ±3%). If this safety
valve releases refrigerant, it can cause serious injury
and/or damage.
▪ If the pressure > set pressure, ALWAYS discharge
from pressure relief devices before servicing.
▪ It is recommended to install and secure blow-off piping
to the safety valve.
▪ ONLY alter the safety valve if the refrigerant has been
removed.
WARNING
All installed safety valves MUST ventilate to the outdoor
space and NOT into a closed area.
Bekijk gratis de handleiding van Daikin LRNUN5AY1, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | LRNUN5AY1 |
| Categorie | Koelkast |
| Taal | Nederlands |
| Grootte | 8986 MB |
