Daikin REYA20A7Y1B handleiding
Handleiding
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13 Special requirements for R32 units
Installation and operation manual
20
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P684060-1C – 2024.10
The room area can be determined by projecting the walls, doors and
partitions to the floor and calculate the enclosed area. The area of
the smallest room being served by a port of the BS unit is used in
the next step to determine the maximum allowable indoor capacity
that can be connected to that port.
Spaces connected by only false ceilings, ductwork, or similar
connections shall not be considered a single space.
If the partition between two rooms on the same floor meets certain
requirements, then the rooms are considered as one room and the
areas of the rooms may be added up. In this way it is possible to
increase the A
min
value used to calculate the maximum allowed
charge.
One of the following two requirements must be met in order to add
up room areas:
▪ Rooms on the same floor that are connected with a permanent
opening that extends to the floor and is intended for people to
walk through can be considered as one room.
▪ Rooms on the same floor connected with openings that fulfil
following requirements can be considered as a single room. The
opening must consist out of two parts to allow for air circulation.
A
nvmin
≥
20
mm
≥
50%
A
nvmin
≤
100 mm
1500
mm
300
mm
200
mm
≥
20
mm
A
nvmin
Minimal natural ventilation area
For the lower opening:
▪ It is not an opening to the outside
▪ The opening cannot be closed
▪ The opening must be ≥0.012m² (A
nvmin
)
▪ The area of any openings above 300mm from the floor does not
count when determining A
nvmin
▪ At least 50% of A
nvmin
is less than 200mm above the floor
▪ The bottom of the lower opening is ≤100mm from the floor
▪ The height of the opening is ≥20mm
For the upper opening:
▪ It is not an opening to the outside
▪ The opening cannot be closed
▪ The opening must be ≥0.006m² (50% of A
nvmin
)
▪ The bottom of the upper opening must be ≥1500 mm above the
floor
▪ The height of the opening is ≥20mm
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.
NOTICE
Indoor units and the bottom of duct openings cannot be
installed lower than 1.8m from the lowest point of the floor,
except for floor standing indoor units (e.g. FXNA)
Step2 – Use the table below to determine the maximum total indoor
unit capacity (sum of all connected indoor units) that is allowed for a
single BS unit branch pipe port. In case a ducted indoor unit is
serving a different room than where it is installed, the restrictions of
the room area apply to both the indoor installation room as the
conditioned room separately. Supply and return air shall be directly
ducted to that room.
Area of
installed/
conditioned
room [m²]
Maximum total indoor unit capacity class
1 indoor unit
per branch
pipe port
(a)
2~5 indoor units per branch
pipe port
40m after 1
st
branch
(b)
90m after 1
st
branch
(c)
≤6 — — —
7 10 — —
8 15 — —
9 32 — —
10 32 — —
11 40 — —
12 40 — —
13 71 — —
14 80 — —
15 80 — —
20 80 32 —
25 140 40 25
30 200 63 50
35 200 71 71
40 250 100 100
≥45 250 140 140
(a)
One indoor unit connected to a single branch pipe port.
(b)
Two to five indoor units connected to a single branch pipe port,
40m after first refrigerant branch.
(c)
Two to five indoor units connected to a single branch pipe port,
90m after first refrigerant branch (size-up of liquid pipe, see
"15.1Preparing refrigerant piping"[425]).
Notes:
▪ The values in the table are under the assumption of worst case
indoor unit volume and 40 m piping between indoor and BS unit
and an installation height up to 2.2 m (bottom of indoor unit or
bottom of duct openings). In VRV Xpress it is possible to add
custom piping lengths, installation heights above 2.2 m and
custom indoor units which can lead to lower minimum room area
requirements.
▪ In case multiple indoor units are connected to the same branch
pipe port, the sum of the connected indoor unit capacity classes
needs to be equal or less than the value indicated in the table.
▪ In case indoor units connected to the same branch pipe port are
split over different rooms, the area of the smallest room needs to
be considered.
▪ Round down the derived values.
Step3 – In case there are any indoor units installed on the lowest
underground floor in the building, there is an extra requirement for
the maximum allowable charge: the installed/served room that has
the smallest area on the lowest underground floor determines the
maximum allowable charge of the entire system. Use the graph or
table (see "Figure 1" [4 2] at the beginning of this manual) to
determine the total refrigerant charge limit in the system.
Note: Round down the derived values.
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Productinformatie
| Merk | Daikin |
| Model | REYA20A7Y1B |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 10147 MB |
