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3 User safety instructions
Installation and operation manual
7
LREN8~12A + LRNUN5A
CO₂ ZEAS outdoor unit and capacity up unit
4P704141-1F – 2024.12
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
After charging refrigerant, keep the power supply and
operation switch of the outdoor unit ON to avoid a pressure
increase on the low pressure (suction piping) side and to
avoid pressure increase on the pressure side of the liquid
receiver.
CAUTION
A vacuumed system will be under triple point. To avoid
solid ice, ALWAYS start charging with R744 in vapour
state. When the triple point is reached (5.2 bar absolute
pressure or 4.2 bar gauge pressure), you may continue
charging with R744 in liquid state.
CAUTION
Do NOT charge liquid refrigerant directly to a gas line.
Liquid compression could cause compressor operation
failure.
Configuration (see "16Configuration"[440])
DANGER: RISK OF ELECTROCUTION
WARNING
If any part of system is already (accidentally) powered on,
setting [2-21] on the outdoor unit can be set to value1 to
open the expansion valves (Y1E, Y2E, Y7E, Y8E, Y15E).
Commissioning (see "17Commissioning"[442])
WARNING
Commissioning MUST be in accordance with the
instructions from this manual. See
"17Commissioning"[442].
CAUTION
Do NOT perform the test operation while working on
the indoor unit(s).
When performing the test operation, NOT ONLY the
outdoor unit, but the connected indoor unit will operate as
well. Working on an indoor unit while performing a test
operation is dangerous.
CAUTION
ALWAYS turn off the operation switch BEFORE turning off
the power supply.
CAUTION
After the refrigerant is fully charged, do NOT turn off the
operation switch and power supply of the outdoor unit. This
prevents the safety valve actuation due to an increase in
internal pressure under high ambient temperature
conditions.
When internal pressure rises, the outdoor unit can operate
by itself to reduce the internal pressure, even if no indoor
unit is operating.
For the user
3 User safety instructions
Always observe the following safety instructions and regulations.
3.1 General
WARNING
If you are NOT sure how to operate the
unit, contact your installer.
WARNING
This appliance can be used by children
aged from 8 years and above and
persons with reduced physical, sensory
or mental capabilities or lack of
experience and knowledge if they have
been given supervision or instruction
concerning use of the appliance in a
safe way and understand the hazards
involved.
Children SHALL NOT play with the
appliance.
Cleaning and user maintenance
SHALL NOT be made by children
without supervision.
WARNING
To prevent electrical shocks or fire:
▪ Do NOT rinse the unit.
▪ Do NOT operate the unit with wet
hands.
▪ Do NOT place any objects containing
water on the unit.
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Productinformatie
| Merk | Daikin |
| Model | LRNUN5AY1 |
| Categorie | Koelkast |
| Taal | Nederlands |
| Grootte | 8986 MB |
