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nuaire.co.uk 

029 2085 8400

30. 05. 19. Document Number  671924

Installation and Maintenance

MEV-X

 - Continuous Extract Unit

5.0 ELECTRICAL CONNECTION 

All electrical connections must be carried out by a qualified electrician.

If the supply cord is damaged, it must be replaced by the 
manufacturer, its service agent or similarly qualified persons in 
order to avoid a hazard.

If wall mounting to prevent potential water ingress the cable entry 
should be on the underside of the unit or replaced with a sealed cable 
gland, the unit must also be mounted square to prevent ingress around 
the PCB cover.

The supply cord should be run so the lowest point is below the cable 
entry grommet to prevent water ingress.

5.1 Examples of Typical Wiring Layouts

The below are examples of potential wiring layouts, alternatives 
are possible and may be required depending on the installation 
requirements. 

Electrical details:- 
Voltage: 230V 1ph 50Hz 
Consumption: 1.1 A

Note: The unit must be earthed.

The cable from the mains power supply should be connected to a fixed 
wiring installation via a fused isolator in accordance with current wiring 
regulations.

IMPORTANT

For good EMC practice, any sensor cable or switched live 

cables should not be placed within 50mm of, or on, the same 

metal cable tray as other cables.

O Y W B

L

L

SL

SUPPLY

WARNING

HIGH VOLTAGE

651616 A0

FAN

CTRL

N

1 2

Speed 2

230 V

Mains

Connection

Motor

Connections

Speed 3

N

SP1

SP2

SP3

IMPORTANT

All-pole disconnection from the mains as shown in the wiring 

diagram must be incorporated within the fixed wiring and shall 

have a minimum contact separation of 3mm in accordance 

with latest edition of the wiring regulations.

Figure 3. PCB

5.2 Mounting Hole Dimensions

136

269

Ø6.6

272

538

Figure 2. Mounting Hole Dimensions

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