S&P ECOWATT PLUS CRHB-CRVB 400-630 N Manuel D'utilisation page 23

5.2. CONSTANT AIRFLOW (CAV)
Operating mode where roof fan maintains constant airflow setpoint within the limits of the unit performance curve.
For verification or activation of CAV operation mode:
1. Microswitch S1.1 in ON position (see locations in section 4.2.).
2. Tube marked as "P" connected to right pressure tap of the terminal box. Tube mar-
ked as "V" connected to left tap.
3. Airflow setpoint adjustment using microswitch S1.2 and potentiometer S4. Table
below indicates the setpoint value (m³/h) depending on position and roof fan model:
Position Position
S1.2 S4
OFF 1
(factory (factory
default) default)
OFF 2
OFF 3
OFF 4
OFF 5
OFF 6
OFF 7
OFF 8
OFF 9
ON 1
ON 2
ON 3
ON 4
ON 5
ON 6
ON 7
ON 8
ON 9
5.3. VARIABLE AIRFLOW VOLUME (VAV)
Operating mode where fan performs a linear proportional regulation depending on up to three external analog inputs
AI1, AI2 and AI3 (see locations in section 4.2., terminals J7, J8 and J9). The inputs may be 0-10V or 4-20mA type. If more
than one analog input is installed, the control system will take as a reference the one that at each instant means a higher
speed value.
CAV operation mode
Full
CRHB-CRVB N ECOWATT PLUS
scale
400
10% 550
(factory (factory
default) default)
15% 825
20% 1.100
25% 1.375
30% 1.650
35% 1.925
40% 2.200
45% 2.475
50% 2.750
55% 3.025
60% 3.300
65% 3.575
70% 3.850
75% 4.125
80% 4.400
85% 4.675
90% 4.950
100% 5.500
Setpoint (m³/h)
CRHT-CRVT ECOWATT PLUS
450 450
600 650
(factory (factory (factory
default) default) default)
900 975 1.125
1.200 1.300 1.500
1.500 1.625 1.875
1.800 1.950 2.250
2.100 2.275 2.625
2.400 2.600 3.000
2.700 2.925 3.375
3.000 3.250 3.750
3.300 3.575 4.125
3.600 3.900 4.500
3.900 4.225 4.875
4.200 4.550 5.250
4.500 4.875 5.625
4.800 5.200 6.000
5.100 5.525 6.375
5.400 5.850 6.750
6.000 6.500 7.500
500 560 630
750 1250 1300
(factory (factory
default) default)
1.875 1.950
2.500 2.600
3.125 3.250
3.750 3.900
4.375 4.550
5.000 5.200
5.625 5.850
6.250 6.500
6.875 7.150
7.500 7.800
8.125 8.450
8.750 9.100
9.375 9.750
10.000 10.400
10.625 11.050
11.250 11.700
12.500 13.000
EN
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