Handleiding
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12 Special requirements for R32 units
Installation and operation manual
19
BS4~12A14AJV1B9
VRV 5 branch selector unit
4P797565-1 – 2024.11
-
42.9
115
P
INTERNAL
[Pa]
-300
-250
-200
-150
-100
0
0
50
100
150
200
250
300
-50
AFR
OUT
[m³/h]
Note: These curves present the internal pressure of the BS unit
compared to an ambient pressure of 101325Pa.
Use the curve of the outlet pressure (P
OUT
) in function of the airflow
rate (AFR
OUT
) for the BS unit. With an airflow rate of 115 m³/h, the
resulting pressure drop generated by the BS unit is 47.5Pa.
-300
-250
-200
-150
-100
0
0
50
100
150
200
250
300
-50
P
OUT
[Pa]
AFR
OUT
[m³/h]
-
47.5
115
Use the curves, with instructions how to read them, of the
manufacturer of the components to find the pressure drop generated
by all components in the ductwork. A conversion of units might be
required. Beware that for ducting, the pressure drop from the
manufacturer might be given per unit length of ducting (units are for
example Pa/m). Multiply this value by the duct length to find the total
pressure drop.
AFR
[m³/h]
AFR
[m³/h]
ΔP
[Pa/m]
ΔP
[Pa]
115
1
115
8
Ducting Bends
EXAMPLE
Write down the pressure drop of each component in an overview
table. Sum up the pressure drops.
Nº Indication Type AFR [m³/h] Length [m] ∆P [Pa/m] ∆P [Pa]
1 a BS unit 115 - - 47.5
2 b Duct “ 5 1 5
3 c Bend “ - - 8
4 b Duct “ 10 1 10
5 c Bend “ - - 8
6 b Duct “ 2 1 2
7 d Expander “ - - 4
8 e Duct “ 6 0.5 3
9 f Reducer “ - - 6
10 b Duct “ 2 1 2
11 b Duct “ 1 1 1
12 g Non-return valve “ - - 11
13 b Duct “ 1 1 1
14 h Wall grill “ - - 15
Total pressure drop (sum of rows 1 to 14) 123.5
Select a fan with the required flow of 115m³/h and a total pressure
rise of 123.5Pa.
Note: For ease of installation, we recommend to use in-line duct
fans.
An online tool (VRV Xpress) is available to find the required pressure
capacity for selecting the correct fan size. Only use this online tool
for the calculation.
Field settings
One BS unit – one extraction fan
Code Description Value
[2-0]
(a)
Cluster indication 0 (default): disable
[2-4]
(b)
Safety measures 1 (default): enable
[2-7]
(b)
Ventilated enclosure 1 (default): enable
(a)
Set on ALL main PCBs (A1P, A2P and A3P) of the BS unit.
(b)
Set ONLY on the LEFTMOST main PCB (A1P) of the BS unit.
Note: For more information, see "16.1Making field settings"[436].
BS unit test run
Before BS unit operation, it is required to perform a test run that
simulates a refrigerant leak. See "17.2 BS unit test run" [4 40] for
more details.
Multiple BS units in parallel – one extraction fan
In this configuration, multiple parallel BS units are connected to a
single extraction fan. Each BS unit benefits from a direct airflow path
to the extraction fan. In case of a refrigerant leak in any BS unit, the
damper of that BS unit will open and allow direct air evacuation to
the extraction fan. The dampers of the other BS units remain closed.
a1
a2
a...
b c
a
#
BS unit #
b Ductwork
c Extraction fan
It is sufficient to connect the extraction fan circuit to only one BS unit
of the cluster (=BS units that belong to the same ductwork and
extraction fan) (see "15.5To connect the external outputs"[435]). If
in a cluster there are BS units that belong to different outdoor unit
systems, the fan circuit must be connected to one BS unit (in the
cluster) of each outdoor unit system.
Example
a
a
a
A
c e
c e
d e
e
f
b
a
a
A
c e
d e
d e
e
B
e
f
a BS unit belonging to outdoor unit A
b BS unit belonging to outdoor unit B
c Extraction fan output terminal – NOT connected
d Extraction fan output terminal – connected
e Interconnection wiring terminal
f Extraction fan
A Outdoor unit A
B Outdoor unit B
Interconnection wiring
Extraction fan output wiring
An online tool (VRV Xpress) is available to find the required pressure
capacity for selecting the correct fan size. Only use this online tool
for the calculation.
Bekijk gratis de handleiding van Daikin BS8A14AJV1B9, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | BS8A14AJV1B9 |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 8827 MB |
