Conspec Controls P2621-NO2/VC Bedieningshandleiding - Pagina 3

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III) LOCATION & MOUNTING

The P2621-NO2/VC can be used to monitor up to 10,000 square feet of undivided area.

It can be used as a self-contained, stand-alone control or as part of a multi sensor Control

system. If the airflow is not uniform or if the area to be monitored is unusual, then the

area by each unit should be appropriately reduced.

Select an appropriate mounting location in an area of heavy traffic flow, away from drafts

and where the vent holes on the bottom of the unit will not be blocked. Mount the unit

with four (4) screws using the external mounting feet provided. The unit should be at a

convenient height, typically five (5) feet above the floor.

IV) INSTALLATION & WIRING

After mounting the unit(s) as described above, connect the power and relay wires as

shown in INSTALLATION DIAGRAM page 9 of this manual. The power circuit and

Control circuit of the unit(s) must be wired with 18 AWG or heavier copper wire. A

multiple sensor installation requires only a simple series Connection of the fan Control

relays. This feature allows for maximum flexibility in system design and installation.

Zoned systems are easily created when several sets of fans need to be controlled

independently.

Be sure to turn OFF power to fan Control system and 24 VAC power supply

before wiring and Connections are made.

Open the enclosure using the provided hex-key. The Control card is mounted on

the inside of the enclosure door. A terminal block for electrical Connections is

located on the back panel of the monitor. The terminals are marked for power

input and relay Connections.

The wiring must enter the P2621-NO2/VC enclosure through the two (2)

electrical openings provided on the unit with conduit fittings.

Connect 24 VAC power supply to terminals T1 and T2 of the terminal block.

Each P2621 unit requires 12 watts of power for proper operation.

Connect the relay (Control) Contacts K1 and K2 in series with the coil of the

ventilation fan control, intermediate relay, or K1 and K2 of the next unit (for

multiple units configuration). NOTE: the P2621-NO2/VC must be wired so

that the fans are ON when the relay contacts K1 and K2 are open.

OPTIONAL ALARM RELAY- Connect the optional relay (alarm relay) Contacts

K3 and K4, if so equipped, as shown in Installation Diagram page 9 of this

manual.

Verify that the wiring to each unit is correct.