Moves up to 575 CFM!

Ceiling Grid Vent System

VS-CGVS

Your Price: $425.00

Retail Price:$455.00

Savings:$30.00(7%)

Ventilation system for drop ceilings

Questions about this item? Be the first to ask here.

> Basic Temp Controllers Standard

> Optional Controllers TC-ALT, ASC, AVC

> Very Aggressive, Up to 1000cfm

Product Versions *

Unit w/Basic Controllers Unit w/ALT 3 Fan Controller (+$60.00) Unit w/ASC Controller (+$195.00) Unit w/AVC Controller (+$75.00)

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Item Description
Features
Specifications
Installation Notes
Troubleshooting
Warranty
Documents

For Very Aggressively Venting Data Rooms or Closets or where Significant Ventilation is Required and Acoustical Drop Ceilings are Installed

The Ceiling Grid Vent System is more of a commercial or industrial product designed to aggressively vent air from equipment rooms or closets. The unit easily installs in a standard 2' x 2' acoustical ceiling grid and uses nine professional 120mm DC fans to aggressively vent up to 1000 CFM of air with the High Velocity version while the standard version is 575cfm (standard version is recommended in most applications). The fans are typically automated by using temperature controllers with various options available but the unit can also be ordered without controllers and set to run full time. The unit is customizable with the main options related to temperature controllers and the cfm of the fans. For example, one bank of fans can be the standard velocity fans while the 2nd bank the higher velocity.

The housing and fan bracket is constructed of lightweight aluminum and has an attractive white enamel finish (fan bracket is unfinished). The grid face features concealed hinges that allow for easy cleaning and service if necessary.

If noise is an issue, the fan speed can be adjusted to effectively lower fan noise. More advanced temperature controllers can also be used to automatically vary the speed of the fans or change the on and off set points if desired (review different options below).

The unit comes in versions with different control options, each unit includes the Ceiling Grid Housing, Fan Panel with 9 - 120mm Fans and 2 Power Supplies and control options as detailed below. The fans are divided into two banks of fans that are powered and controlled separately for redundancy and added versatility. Below are the different versions with the only difference being the way the units are controlled.

Different Control Options

Basic Controllers (VS-CGVS-BSC) - This option includes two Basic Controllers (TC-BSC), one set at 80°F and one at 90°F. These are on/off controllers meaning they turn the fans on at the set point and off approximately 2° or 3° below the set point.
Optional: Basic controllers with other set points can be used with options including 100° and 110°

Advanced LT Controllers (VS-CGVS-ALT) - This option includes an Advanced LT controller (TC-ALT-3FN) which is on/off, variable speed controller, and with this controller the fans are divided into 3 banks of fans and these banks are controlled with this unit. The controller independently turns the fans on at the set point and ramp up the speed of the fans as the temperature increases. The controller has 3 modes for 70°, 80°, 90°, 100°, and 110°. There is also an alarm at 115° or 125° and it can also be disabled.

Advanced System Controller (VS-CGVS-ASC) - This option includes the Dual Advanced System Controller which is fully programmable and includes triggers, contact closures on alarm... Typically this unit would be installed with equipment or on a shelf (it is not wall mounted)

Advanced Ventilation Controller (VS-CGVS-AVC) - This option includes the Advanced Ventilation Controller which is a high voltage controller and is used to control an outlet used to then power the Ceiling Grid System. An image of this is on the following page. This controller is on/off control with various features discussed in more detail on the next page.

New Addition. Also available is a AVC unit that is 12V DC versus the above high voltage format.

See 'Documents' for printable instructions as this is intended to provide some basic insights for the installation.

Installation is pretty straightforward as it primarily rests in the 2x2 grid of the acoustical drop ceiling. The installer must determine if the grid needs additional support for the weight of the unit. The unit is intended to exhaust air into the plenum space which if prefer to duct it a simple duct box should be made out of standard duct board.

Powering the Unit. Very generally since there are some options, the unit is powered by a standard outlet where the two power supplies (AC/DC Adapter) will be plugged into the outlet and the power supplies plugged into the unit ensuring to align Tip to + or + to +.

Fan Speed. Depending upon the power supply and if using the Basic Controllers, the fan speed can be adjusted by changing the voltage on the the power supply - 12V fixed power supply is included but variable voltage can be purchased separately. For other controllers, the AVC controller is On/Off Full Speed Only, the ALT and ASC controllers are On/Off and Variable Speed so the power supply should always be on 12V.

It should also be noted that the power supplies can also be located away from the fan unit and wires simply run to the fan unit. With this in mind, the outlet can also be controlled with a switch if the unit is not intended to be working full time but that is also the purpose of the controllers, to only turn the fans on when necessary. Also with this in mind, the controllers can also be installed remotely and even if it requires removing the controller/s from the fan unit. This would be done if it is desired to monitor and run the fans based on a the temperature somewhere other than at the unit of if desired to have access to the controllers without having to get to the unit. This would not apply to the Basic Controllers since those are a fixed setpoint but would apply to all other controllers.

Since there are several versions and some customized versions, the first thing to know is which model have and also it's intended function. Most units are designed to have 2 'banks' of fans and each bank turning on and off at different set points. The main difference in the units is how they are controlled, the Basic Controllers which are most common are cylindrical and mounted directly to the fan bracket with one end silver, the other end rubber wrap. These controllers turn the fans and on and off, they do not change the speed of the fans. Another option is the ALT controllers and these have programmable setpoints and are also typically mounted on the fan assemblies and identified as a rectangular box and should be labeled as well. These controllers have several setpoints that can be changed but one further thing to note is if it is a ALTv2, ALT, ALT-PRO, ALT-3FN. All versions turn fans on and off and also change the speed of the fans based on temperature. The AVC and ASC controllers are not mounted onto the fan assembly, the AVC is wall mounted and looks like a typical thermostat and the ASC is a 'component' (set top box) typically installed with other equipment or may be on a shelf. The AVC is a high voltage controller and should be wired to an outlet that is triggered by the controller and then powers the AC/DC adapters. The ASC looks more like a small stereo component and is fully programmable and also turns fans on and off and varies the speed of the fans.

The reason this is important is if have to contact us it is important for us to know the version you have. Newer units should also have a label indicating the model and features.

To Troubleshoot

If No Fans are Working or Only One Bank of Fans is Working (one bank is either 4 or 5 fans)

The most common failure is a power supply so testing that is the first step. Since the unit has 2 power supplies and if only one bank of fans is working, simply swap the power supplies or of course use a voltmeter to test. If the power supply is good then bypass the temperature controller which will require cutting the zip ties and releasing the wiring. Then you should be able to trace the wiring and instead of going from power supply to controller to fans simply go from power supply to fans but ensure the proper connection where on the connector ends Tip should align with + or it may be + to +. Reversing polarity will not damage fans but they will not work if reversed. If using a controller can also plug the power supply directly to the fan unit to easily determine if the controller may be the problem.

If Only One or Two Fans are Not Working

The fans are installed in pairs except for one of the fans of course (9 fans). If one fan out of a 2 fan assembly is not working then it is pretty straightforward that the fan or the wire has failed which either way means need a replacement. Now if 2 fans in the same assembly are not working then check the connection and ensure it's installed Tip to + or + to + and of course it's a long shot since presumably it was working previously but still a good 2 second check. You can also test it by using a power feed known to work (one from another fan assembly that is working) and plug in the non working assembly and see if it works. If it does not then the fan assembly has gone bad. If an assembly stops working but then starts again, there may be a short in the overmolding so if fans mysteriously start working, try different positions with the wiring just to confirm that this is the problem. If this occurs the assembly should still be replaced.

New Installations. If something is not working right out of the box simply check all of the connections. Every unit is thoroughly tested after assembly but just never know what could have happened during shipping. Ensure proper polarity (tip aligns with + or + to + on cable ends) and if it's a variable voltage power supply it's turned up to at least 7V. If still not working then go to the instructions on if no fans are working.

Noise Issues. If the unit is too loud then ensure the voltage is set to 7 or 9 volts if using a variable voltage power supply without a controller. For the most silent operation the TC-ALT or ASC controller should be used as it varies the fan speed based on temperature. If the noise appears to be from some sort of vibration, ensure fans are properly seated on the fan mounts as they should not be contacting the metal bracket.

Ceiling Grid Vent System

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