Daikin BEV2, Installer'S Reference Manual

Page: 23 / 40

7 | Piping installation
Installer reference guide
23
BEV2N-A
CO₂ Conveni-Pack: BEV2 unit
4P677928-1 – 2021.10
▪ Keeping in mind the guidelines for:
- Pipe bending
- Brazing
- Using the stop valves
7.2.2 Precautions when connecting the refrigerant piping
INFORMATION
Also read the precautions and requirements in the following chapters:
▪
"2 General safety precautions" [
4
4]
▪
"7.1 Preparing refrigerant piping" [
4
21]
DANGER: RISK OF BURNING/SCALDING
CAUTION
NEVER bend high pressure piping! Bending can reduce the pipe thickness and thus
weaken the piping. ALWAYS use K65 fittings.
NOTICE
Take the following precautions on refrigerant piping into account:
▪
Avoid anything but the designated refrigerant to get mixed into the refrigerant
cycle (e.g. air).
▪
Only use R744 (CO₂) when adding refrigerant.
▪
Only use installation tools (e.g. manifold gauge set) that are exclusively used for
R744 (CO₂) installations to withstand the pressure and to prevent foreign
materials (e.g. mineral oils and moisture) from entering the system.
▪
Do NOT leave pipes unattended at the site. If you will finish the work in less than
1 month, tape the pipe ends or pinch the pipe (see figure below). Pipes that are
installed outdoors must be pinched, regardless of the duration of the works.
▪
Use caution when passing copper tubes through walls (see figure below).