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APPLICATION
The 75F® Pressure Sensor Package™ is designed to monitor the
differential pressure inside your building. Pressure in a building can be
created in several ways. Buildings are generally designed to exhaust
as much air as is being taken in, but circumstances often arise that
create a positive or negative pressure in a space. Typically, a building
should maintain a slightly positive pressure, +0.01 inches' water
column. 75F solutions can regulate the pressure differential when the
Pressure Sensor Package Solution is used in conjunction with a 75F®
Outside Air Optimization™ Package.
Fig. 1
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PRECAUTIONS
•
Failure to wire devices with the correct polarity when using a
shared transformer may result in damage to any device
powered by the shared transformer.
•
Do NOT mount the tubing so that the inside or outside tube
ends are in direct line of a breeze or draft.
•
Remove power before wiring. Never connect or disconnect
wiring with the power applied. Do not allow live wires to
touch the circuit boards.
INSTALLATION & OPERATION INSTRUCTIONS
75F® Pressure Sensor Package™
www.75f.io
888.590.8995 x2
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Summary of Contents for 75F A/DP2 Series
- Page 1 Typically, a building should maintain a slightly positive pressure, +0.01 inches’ water column. 75F solutions can regulate the pressure differential when the Pressure Sensor Package Solution is used in conjunction with a 75F® Outside Air Optimization™ Package. Fig. 1 PRECAUTIONS •...
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Page 2: Specifications
Install in accordance with all state and local codes. FEATURES • Monitoring of differential pressure between barometric and indoor pressure. • When used in conjunction with the 75F Outside Air Optimization Package, pressure control is possible. SPECIFICATIONS 75F Pressure Controller • Supply Voltage: 24VAC •... - Page 3 RTU where it will not impede any door opening and in no direct vacuum like the OA intake or near any exhaust port. WIRING Pickup Port Interior Pickup Port Exterior 24VAC 24VAC Fig.3 www.75f.io 888.590.8995 x2...
- Page 4 Powering the controller. Use 18/2AWG to run power from the 24VAC transformer to the 75F Smart Node as shown below. Wiring the A/DP2. Use 18/3AWG to run power from the 75F controller to the pressure sensor as shown in Fig.3. The power for the A/DP2 is internally connected so that the controller will power the A/DP2 pressure differential sensor.
- Page 5 Pressure Smart Node will read only “Pressure” until the CM and Tablet are reconnected. Now pair other modules or snap the Tablet back onto Pressure Smart Node will begin communicating over the 900Mhz channel. Once communicating over long range the Pressure Smart Node will display relevant information. www.75f.io 888.590.8995 x2...
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Page 6: Troubleshooting
Check that the value is not maxed out in either direction, +0.25wc or -0.25wc. To look at the summary page on the CCU tap on the 75F logo in the upper left 4 times and a new tab will appear titled Summary. - Page 7 Smart Node is powered. 75F TECHNICAL SUPPORT If you need more information, please visit www.75f.io/support. Here installers will find instructional videos, installation guides, and more. You can also call 888.590.8995 x2 if you need technical support.