Daikin ETBH16E9W Installer's Reference Manual page 98

8 | Piping installation
Installer reference guide
98
To install freeze protection valves
To protect the field piping against freezing, install the following parts:
a
a Automatic air intake
b Freeze protection valve (optional – field supply)
c Normally closed valves (recommended – field supply)
Part
An automatic air intake (for air supply) should be installed at the
a
highest point. For example, an automatic air purge.
Protection for the field piping.
b
▪ Install the freeze protection valves:
- At all lowest points of the field piping.
- In the coldest part of the field piping, away from heat sources.
- Vertically to allow water to flow out properly.
- >15 cm above the ground to prevent ice from blocking the
water exit. Make sure there are no obstructions.
- >10 cm away from other freeze protection valves.
▪ Prevent rain, snow and direct sunlight on the freeze protection
valves.
▪ Insulate the freeze protection valves in a similar way as the water
piping, but do NOT insulate the inlet and outlet (release) of these
valves.
▪ Do NOT make traps in the field piping.
c
b c
b
Description
>10 cm
>15 cm
EPRA14~18D + ETBH/X16E
Daikin Altherma 3 H HT W
4P644736-1D – 2023.10