COMAIR Delta 52YF Manual - Página 4

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WIRING

WARNING:

THE UNIT AND ANCILLARY CONTROL EQUIPMENT MUST BE ISOLATED

FROM THE POWER SUPPLY DURING THE INSTALLATION / OR

MAINTENANCE. THIS UNIT MUST BE EARTHED.

To remove the cover, use a coin or similar; depress the retaining tabs via the slots in the side of

the unit.

With the power off, connect a suitable mains power cable from a switched, fused spur to the screw

terminal block. Use the cable clamps and clip provided to secure the lead.

Two mains voltage Live Switched (LS1 and LS2) connections are provided, and can be used to

trigger a change in speed. Common inputs would be from a bathroom lighting circuit. When

commissioning the unit, a delay on timer and an overrun timer can be selected and adjusted in the

software using the buttons and screen. See Commissioning section on page 5 of this document for

details.

The switched live output (230Vac) from any other switch or controller, (such as a simple latching

pullcord or push button switch, humidistat or PIR detector) can be connected to the LS terminal

instead of connecting to a lighting circuit.

Important: Use 4-core, low voltage, twisted pair, telecoms type cable for accessories. Accessories

are connected via the IO (Input Output) PCB; see the Low Voltage Connections diagram in the Main

fitting and wiring guide, downloadable on the website.

There are no delay-on or overrun timers with the volt-free connection as the controller should

determine when the fan is running at Boost or Normal speeds. Use the LS connection described

above if you want a timer.

Units showing

A: Main power connections

The LS1, LS2 and NS terminals are

electrically isolated.

Note: Neutral link between 2 & 6 should be removed if different

RCD protection circuits are used for mains power a & Live

Switch connections.

Note: Ensure all live & neutral are isolated before servicing.

This appliance incorporates an earth connection for functional purposes only

Connection

1 L

2 N

4 LS1

5 LS2

6 NS

7 N + NS

on the rating label incorporate an earth connection for functional purposes only.

on the rating label have a Protective Earth.

Description

Live (220-240Vac)

Neutral

Functional Earth

Protective Earth

Live Switched 1, (220-240Vac), isolated

Live Switched 2 (220-240Vac), isolated

Neutral Switched, isolated

Link Wire (Blue)