APC ACAC76128 Manual download pdf (Page 4)

Automatic Floor Pressurization Sensor for Uniflair CW — Installation4

Installing the sensors

To install the below-floor sensor:

1. Locate the mounting point for the sensor head, and route the tubing through the bottom of the unit

and underneath the floor tiles to this location.

Note: Avoid placing the positive pressure sensor head under the raised floor where the

airflow velocity is high: for example, directly beneath the unit. The recommended

position for the pressure sensor head is 3–4 m (10–13 ft) away from the unit.

2. Fasten the mounting clamp to a raised floor post.

3. Ensure that excess tubing is carefully secured. Avoid sharp bends or kinks in the tubing.

Sensor head clamps on raised floor post

The above-floor pressure sensor can be installed in the port located at the bottom right corner of the

Uniflair unit.

To install the above-floor pressure sensor to the Uniflair port:

1. Using a standard screwdriver, pry off the cover on the sensor port.

2. Route the tubing through the cooling unit, neatly coiling any excess tubing.

3. From inside the unit, attach the sensor head to the port, then fasten the fitting into the port from

outside the unit.

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APC ACAC76128 Manual Page 4