ENGLISH
RASC-6HNPE
RASC-8HNPE
External Static Pressure (Pa)
0
10
20
30
40
50
60
70
80
90
100
110
120
130
40
45
50
55
60
65
70
75
80
External Static Pressure (Pa)
0
10
20
30
40
50
60
70
80
90
100
110
120
130
100
105
110
115
120
125
130
135
140
Air flow (m³/min)
Air flow (m³/min)
RASC-10HNPE
?
N O T E
• When designing a duct, check to ensure that the Air volume is
within working range as indicated in the fan performance curves.
• If the Air volume is set outside working range, water carry-over
(drop in the ceiling or into the room), noise increase, damage to fan
motor (high temperature) or insufficient Cooling/Heating capacity
phenomena can occur.
External Static Pressure (Pa)
0
10
20
30
40
50
60
70
80
90
100
110
120
130
100
105
110
115
120
125
130
135
140
Air flow (m³/min)
7.4.1 Setting of the fan performance curves
In some installations, it may be necessary to adjust the fan
operation settings of RASC-(6/8/10)NPE units in order to
achieve an optimal performance of the fan unit. The correct
static pressure setting (Low / Medium / High) has to be selected
using the PSW and 7-segment display on the RASC PCB,
according to the pressure values below:
• RASC-(4/5)HP: No setting is required.
• RASC-(6/8)HP: Select the “Medium pressure setting (
f2
:
1
)”
for external static pressures higher than 50Pa.
• RASC-10HP: Select the most suitable static pressure
setting, depending on the installation conditions:
-
“Medium pressure setting (
f2
:
1
)”: For external static
pressures between 50 and 80 Pa.
-
“High pressure setting (
f2
:
2
)”: For external static
pressures higher than 80 Pa.
Default value: “Low pressure setting (
f2
:
0
)”
In order to do so, measure the fan motor current and set the
static pressure setting according to the following table. For
the measurement of the fan motor current, please refer to the
following drawing
UNITS INSTaLLaTIoN
PMML0399B rev.0 - 11/2015
9
