SystemAir VR 300 ECV/B, Installation Description

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VR 300 ECV/B
Installation description
206552 (12-12-2012)
12
Systemair AB
Electrical connection
The unit
The VR 300 ECV/B units are supplied with apx. 1m cable and plug for 10A, 230V, single phased earthed
connection. The electrical connection to the cooker hood is done through connection plugs (
fig. 10 )
situated on the bottom plate of the unit. The 3 pole connection plug (pos. 1, fig. 10) is used for the mains
supply of the cooker hood light and the 4 pole connection plug is used for the speed control signal.
In case a cooker hood is not used and the speed control is done by an external speed regulator the 3
pole connection plug (pos 1,
fig. 10 ) is not used.
See also the wiring diagram, which is enclosed with the unit.
1
2
Fig. 10
Speed control
The VR 300 ECV/B (pos 1, fig. 11 ) can alternatively be controlled from a wall mounted 3 step speed
regulator (pos 2, fig. 11 ) or from a cooker hood where the speed control is integrated in cooker hood front.
If a separate 3-step speed regulator is used a 3-wire cable needs to be connected to the speed
regulator (
fig.12 ) At the end of that cable a 4 pole male plug, type Ensto NAC41SH.W can be
applied in order to fit the corresponding connector (Ensto NAC42SH.W) on the VR 300 ECV/B. Make sure
that the cable colors correspond to each other when the two connectors are joined.
Check the enclosed wiring diagram for more detailed information.
1
2
3
2
Position Description
1 Air handling unit VR 300 ECV/B
2 3-step speed regulator
3 Control signal connection plug
Fig. 11