Daikin VRV 5 BS4A14AJV1B Manual page 42

13 | Special requirements for R32 units
Installer and user reference guide
42
A
≤ 100 mm
A Minimal natural ventilation area
nvmin
For the lower opening:
- It is not an opening to the outside
- The opening cannot be closed
- The opening must be ≥0.012 m² (A
- The area of any openings above 300 mm from the floor does not count when
determining A
nvmin
- At least 50% of A
nvmin
- The bottom of the lower opening is ≤100 mm from the floor
- The height of the opening is ≥20 mm
For the upper opening:
- It is not an opening to the outside
- The opening cannot be closed
- The opening must be ≥0.006 m² (50% of A
- The bottom of the upper opening must be ≥1500 mm above the floor
- The height of the opening is ≥20 mm
Note: The requirement for the upper opening can be met by false ceilings,
ventilation ducts or similar arrangements that provide an airflow path between the
connected rooms.
Step 3 – Use the graphs or tables below to determine the required safety
measures for the BS unit.
nvmin
≥ 50% A
nvmin
)
nvmin
is less than 200 mm above the floor
nvmin
≥ 20 mm
≥ 20 mm
)
VRV 5 branch selector unit
4P695527-1 – 2022.02
BS4~12A14AJV1B