WV-NW470S, WV-NW474SE - Panasonic Video Monitoring Service Manual (repair manual). Page 8

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Installing this heater unit enables the camera to operate under in a low-temperature environment of –30 °C (–22 °F). The heater turns on
automatically when the temperature inside the camera drops below +10 °C (50 °F) and turns off when it rises.
A small fan inside the unit will minimize condensation on the surface of the dome cover caused by changes in ambient temperature unless
temperatures change too rapidly. The fan will stop when there is no possibility of condensation.

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• This product should be installed and connected by qualified service personnel or system installers.
• Do not use the same 24 V AC power source supplying the power to the camera for the heater unit. Connect another 24 V AC power

source to the heater unit. If the same power source is used, turning the heater on and off may disturb the camera images.

• When servicing, pay attention to high temperature on the surface of the unit. Disconnect the harness and wait until it cools.
• When you install the camera in a low-temperature location and start operating it, it may take time (around 30 minutes) for the inside of

the camera to warm up. Cut power once then supply power again.

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1. Open the dome cover. (See "Disassembling Procedure for Adjustement"

on page 2-1.)

2. Place the heater unit in the camera and fix it with the supplied screw.
3. Insert the harness into the heater unit connector of the camera.
4. Fold the desiccant pack in half, and attach it with adhesive tape to point

"A" shown in the figure.
Note: Attach the desiccant pack so that it does not block ventilation holes

or hang over the top of the wall.

5. Attach the dome cover while paying attention not to pinch the harness

cable.

6. Connect the heater power cable of the camera. (See Connection.)

Adhesive tape

Fold

Supplied screw

Harness

Point "A" (wall)