Calculate the total floor area.
(A
total
=
A
roomA
+A
roomB
)
See table 4: Look up the minimum bottom opening area for natural
ventilation with the adjacent room (A
nv-min
) for the given refrigerant charge,
the given floor area of room A (A
roomA
) [! NOT room A + room B !] and the
given release height (H1).
Calculate ΔH1: difference between the minimum release height
required (H1) and the release height without chimney.
See table 2: Look up the minimum release height (H1) for the
given floor area (A
total
)
and the given refrigerant charge.
Is it practically feasible to
create ventilation openings that comply
with A
nv-min
and with the "Conditions ventilation
openings" on previous page)?
See table 3:
For ΔH1: Can the maximum
chimney length be respected, and is the
chimney practically feasible?
See table 2: Do you
need a chimney or not?
(i.e. does table 2 result in a value or "(*)"?)
Yes
No
No
Yes
Needed
(i.e. table 2 results in a value)
Not needed
(i.e. table 2 results in "(*)")
Go to PATTERN 3
H1, ΔH1 A
nv
, A
nv-min
A B
A B
ΔH1
You can install the unit in room A if you create ventilation
openings. You do not need a chimney.
Ventilation openings must comply with A
nv-min
and with
"Conditions ventilation openings" on previous page).
2a
You can install the unit in room A if you install a chimney, and
create ventilation openings.
Chimney height = ΔH1.
Ventilation openings must comply with A
nv-min
and with
"Conditions ventilation openings" on previous page).
2b
A
nv
(≥A
nv-min
)
Min. 50%
of A
nv-min
A
nv
(≥A
nv-min
)
Min. 50%
of A
nv-min
Start PATTERN 2
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