Pelco C2494M User Manual

INSTALLATION

Spectra III™ EVS
In-Ceiling Back Box

C2494M (12/05)

Important Safety Instructions

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

9. Only use attachments/accessories specified by the manufacturer.

10. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid injury from tip-over.

11. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord
or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped.

12. Installation should be done only by qualified personnel and conform to all local codes.

13. Unless the unit is specifically marked as a NEMA Type 3, 3R, 3S, 4, 4X, 6, or 6P enclosure, it is designed for indoor use only and it must not be installed
where exposed to rain and moisture.

14. Use only installation methods and materials capable of supporting four times the maximum specified load.

15. Use stainless steel hardware to fasten the mount to outdoor surfaces.

16. To prevent damage from water leakage when installing a mount outdoors on a roof or wall, apply sealant around the bolt holes between the mount and
mounting surface.

17. CAUTION: These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock do not perform any servicing
other that contained in the operating instructions unless you are qualified to do so.

18. Only use replacement parts recommended by Pelco.

The product and/or manual may bear the following marks:

This symbol indicates that dangerous voltage constituting a risk of electric shock is present within this unit

This symbol indicates that there are important operating and maintenance instructions in the literature
accompanying this unit.

CAUTION:

RISK OF ELECTRIC SHOCK.

DO NOT OPEN.

2 C2494M (12/05)

Installation

Locate the center point of the mounting location and insert the compass

1

tool. Draw a circle.

Cut the circle out of the ceiling.

Attach the conduit fitting, safety chain bracket, and lock nut. Install a

2

safety chain/cable (not supplied) that will support up to 16 pounds
(7.3 kg).

Open the hinged door to the back box. Push the tab lock towards the

3

wall of the unit and lift the door open. Pull power, alarm/auxiliary, and
network cable into the back box.

The following are the recommended maximum distances for 24 VAC
applications and are calculated with a 10 percent voltage drop.
(Ten percent is generally the maximum allowable voltage drop for
AC-powered devices.)

Tot alVA20 AWG

(0.5 mm

36 79 ft

(24 m)

NOTE: Input power for the dome is 24 VAC only. Power consumption
is 36 VA per dome. Use a 24 VAC transformer with a minimum of
36 VA per dome.

2

)

18 AWG

(1.0 mm2)

125 ft
(38 m)

16 AWG

(1.5 mm2)

199 ft
(60 m)

14 AWG

(2.5 mm2)

316 ft
(96 m)

C2494M (12/05) 3