28
6 COMMISSIONING
6.1 Setting Fan speed
Speed factory settings: speed 1 at 40%, speed 2 at 70% and speed 3 at 100%.
If necessary the speed of the unit can be adjusted during installation according to required ventilation rate.
Figure 6.a
below shows performance curve at different settings of the 0-10V signal to the motors. Airflow and consumption refer to the 2 motors.
Table 6.b
indicates the efficiency of the heat exchanger and of the condensation produced in different climatic conditions, to help the installer or the
designer of the ventilation system to decide if to connect one or both condensation drainages.
High production of condensation is the direct consequence of a high efficiency level as well as of the humidity rate.
Table 6.c
indicates the sound level at the different speed.
5.l
1
2
3
4
Operation
X
0
0
0
Single speed
X
1
0
0
Two speed
X
0
1
1
Variable speed through external domotic (BMS) system or ballast potentiometer
X
1
1
0
Three speed with SEL42M - SEL4W (Fig.5.g)
Dip switch
1
2 3 4
1
0
Fig. 6.a
Intake curve according to Reg. 1253/2014 (ErP).
Static Pressure - Pa
Air-flow - m
3
/h
0
50
100
150
200
250
300
350
400
450
500
0
20
40
60
80
100
120
140
160
180
200
220
A
B
C
D
E
F
G
A
B
C
D
E
F
G
TRIMMER V1- V2
X: Dip 1 switch is for factory setting only and it does not have to be changed.
