Daikin LREN8A7Y1B - Unit installation; Preparing the installation site

14 | Unit installation
Installer and user reference guide
56
LREN8~12A7 + LRNUN5A7
CO₂ ZEAS outdoor unit and capacity up unit
4P704142-1 – 2022.08
14 Unit installation
WARNING
▪ Install all necessary countermeasures in case of refrigerant leakage according to
standard EN378 (see "14.1.3 Additional installation site requirements for CO₂
refrigerant"[460]).
▪ 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
Fix the unit correctly. For instructions, see "14Unit installation"[456].
NOTICE
Adverse effects shall be considered. For example, danger of water collecting and
freezing in discharge pipes for pressure relief devices, accumulation of dirt and
debris, or blockage of the discharge pipes by solid CO
2
(R744).
INFORMATION
The installer is responsible for supplying the field supply components.
In this chapter
14.1 Preparing the installation site ................................................................................................................................................ 56
14.1.1 Installation site requirements of the outdoor unit ............................................................................................... 57
14.1.2 Additional installation site requirements of the outdoor unit in cold climates ................................................... 60
14.1.3 Additional installation site requirements for CO₂ refrigerant............................................................................... 60
14.2 Opening and closing the unit ................................................................................................................................................. 65
14.2.1 About opening the units ........................................................................................................................................ 65
14.2.2 To open the outdoor unit ...................................................................................................................................... 65
14.2.3 To open the electrical component box of the outdoor unit ................................................................................. 66
14.2.4 To close the outdoor unit....................................................................................................................................... 67
14.3 Mounting the outdoor unit .................................................................................................................................................... 68
14.3.1 About mounting the outdoor unit ......................................................................................................................... 68
14.3.2 Precautions when mounting the outdoor unit...................................................................................................... 68
14.3.3 To provide the installation structure ..................................................................................................................... 68
14.3.4 To install the outdoor unit ..................................................................................................................................... 70
14.3.5 To remove the transportation stay........................................................................................................................ 70
14.3.6 To provide drainage ............................................................................................................................................... 71
14.1 Preparing the installation site
Choose an installation location with sufficient space to transport the unit in and
out of the site.
Do NOT install the unit in places often used as work place. In case of construction
works (e.g. grinding works) where a lot of dust is created, the unit MUST be
covered.