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Class I Div 2 Wall & Remote Mount NFPA 496 Building Pressurization Units

Model WDP & RDP
Wall & Remote Mount NFPA 496
Building Pressurization Units

Standard Features

explosion-proof building pressurization units, hazardous location building pressurization units, classified area explosion proof building pressurization units

Indicators & Operators

All Bebco Whisper Drive™ Wall and Remote Mount Building Pressurization Units are furnished with a 4" diameter color-coded room
pressure indicator, and an array of indicator lights and control operators to start, control and monitor the unit's performance.

These devices are located above the discharge grille of Model WDP Units, and are provided with Model RDP Unit Remote
Control Stations that are intended for mounting on an interior or exterior wall of your pressurized room or building.

As listed below, the room pressure indicator displays the positive differential pressure between your room or building and the
surrounding external atmosphere, The indicators and control operators provide clear indication that the unit is running, allow
you to engage the primary fan, and to disable or engage the secondary fan in manual or automatic modes. The controls also
allow you to disable the alarm signal and provide clear indication of whether the alarm is active or if it has been bypassed.

Click this image to learn more!
System Control Features
Field-Adjustable Set Points & Delay Timers
Provides room pressure and alarm pressure settings, along with secondary fan and alarm activation timers

Room Pressure

Primary Fan
On Indicator:

Primary Fan
Control Switch:

Secondary Fan
Control Switch:

Alarm Engaged:

Alarm Signal
Bypass Switch:
4” Color Coded Differential Pressure Gauge
indicates room pressure at range of 20 feet

Green Indicator Light
illuminates when primary fan is engaged

On/Off Selector Switch
engages and disengages primary fan

Off/Manual/Automatic Selector Switch
disengages, manually engages or
automatically engages secondary fan

Red Indicator Light
illuminates when alarm signal is active
flashes when alarm signal is disabled

On/Off Selector Switch
enables or disables alarm signal

Bebco Environmental Controls Corporation
Physical Address: 4725 Lawndale Street, La Marque, Texas 77568
Mailing Address: P.O. Box 68 Hitchcock, Texas 77563
Phone: (844) 397-4822     |   Fax: (409) 935-5819
Office Hours:
 8 AM to 5 PM CST, Monday - Friday
Please visit this site for NFPA 496 UL Classified Enclosure Purging Systems:
Best Purging Systems Corporation

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