Slide 1: Welcome to the sixth AdaptAire webinar
Welcome to the sixh AdaptAire webinar webinar. 1
Slide 2: The sixth in The AdaptAire Basics series
This webinar is the sixth in The AdaptAire Basics series. series The AdaptAire Basics webinars are designed as a series of short presentations lasting 20 – 30 minutes. Each webinar will cover a different topic so you should schedule time to attend the remaining two. 2
Slide 3: Format of each webinar
The format for each webinar will be a short review of the previous webinar webinar, followed by the scheduled presentation, followed by a recap. We will end with time for questions. 3
Slide 4: Review of the last webinar: MDT-Expert control system
Let’s get started with a review of the our last webinar which covered the MDT-Expert control system. We learned the MDT-Expert remote user interface has an LCD display and an array of buttons that allow the user to adjust the discharge temperature setpoint, start and stop the unit, and provides syst
Slide 5: Discharge temperature control with 5 setpoints
We looked at how the system controls the discharge temperature with 5 setpoints shown here. 5
Slide 6: Freeze protection, energy savings, diagnostics, fault control
You heard that the control system provides freeze protection, energy savings, diagnostics, and fault control. We discussed the time clock scheduling function, and you learned why it’s necessary to select the days for 24 hour operation. Finally we discussed the versatility of the user configured outp
Slide 7: This webinar covers the MRT-Expert room temperature control system
This sixth webinar will cover the MRT-Expert room temperature control system. In the next few slides you’ll learn what it looks like. You’ll see how it works. You’ll get a taste of what it can do. And what it can’t do. Then you’ll hear what we can make it do that it doesn’t. 7
Slide 8: The MRT-Expert remote panel (BACview)
Pictured is the MRT-Expert remote panel. It’s made by Automated Logic and is called a BACview. As you can see, the BACview has a 4 line, 40 character liquid crystal display and an array of buttons. 8
Slide 9: MRT-Expert used on direct and indirect fired units
The MRT-Expert is used on all Applied Air direct and indirect fired units requiring room temperature control. This includes non-recirculating and recirculating units. Notice this MRT-Expert system is programmed for a direct fired recirculating heater. 9
Slide 10: BACview as a service tool
The BACview comes with a cord so it can be plugged into the local access port of any AdaptAire control module which makes it an excellent service tool. An MRT control system can be commissioned and serviced without a BACview, but upgrading to an MRT-Expert, which includes the BACview, will make comm
Slide 11: Hard wiring the BACview to the control module
The BACview can also be hard wired directly to the control module via a 4 conductor shielded cable run between the BACview connector plug and the RNET communication port on the control module. 11
Slide 12: Mounting the BACview up to 500 feet away
When hard wired, the BACview can be mounted up to 500’ from the unit where it will typically be mounted on a 2 gang electrical box. This requires removing the 4 cover mounting screws and the 4 stand offs. The back plate can then be fastened to the 2 gang box and the cover replaced. 12
Slide 13: The standby screen
Once the BACview is connected to the control module, the BACview will display the standby screen. This screen gives a general description of the unit as well as the current time, date and room air temperature. 13
Slide 14: Home screen and link buttons
Pressing any button navigates to the Home screen. Applied Air contact information is displayed here. Look closely on the right side of the display and you’ll see a small arrow pointing down. This indicates there is more information that isn’t currently displayed on the screen. Pressing the DOWN navi
Slide 15: Navigating menus and Hot Keys
To access other screens within the MRT-Expert menu, such as the Alarm screen, the user can drill down through the menu using the link buttons. Other screens can also be accessed using Hot Keys. Hot Keys are activated by pressing and holding the FN button and the pressing any numbered button. Each nu
Slide 16: Password protection
As I mentioned, the BACview can be mounted up to 500’ from the unit and is often mounted in an area accessible to many people. To prevent tampering with setpoints and other operational parameters the BACview is password protected. A user can LOGIN and enter the password. The default password is 0000
Slide 17: Review of what we've learned so far
Let’s take a quick break from learning new things and go over what we’ve learned so far. First, the MRT-Expert control system does modulating room temperature control. You know the MRT-Expert user interface is called the BACview. You know the BACview is a keypad display that can be mounted up to 500
Slide 18: Review: screens, buttons and passwords
You saw the standby screen shows the unit description, time, date, and current room air temperature while the Home screen displays Applied Air contact information. I talked about the various buttons and how they can be used to navigate through the screen menus. Finally, you learned the editable para
Slide 19: Unit modes: Off, Manual, Auto
After entering the password the user can access any editable screen. The MRT-Expert system allows the unit to be started and stopped from the BACview through the Unit Modes screen. There are three unit modes of operation. The unit is stopped when it is in the OFF mode. In the MANUAL mode the fan run
Slide 20: Damper control for recirculating units
For recirculating units the MRT-Expert system provides building pressure and manual damper control. Units with a mixing box also have mixed air temperature damper control as well. 20
Slide 21: Building pressure, manual and mixed air damper control
Units operating with building pressure damper control will have the dampers modulated to maintain the building pressure setpoint. If the building pressure is above the setpoint, the outside air dampers will close and the return air dampers will open until the setpoint is reached. If the building pre
Slide 22: Factory default setpoints and valid ranges
All units are shipped with factory default setpoints. Where possible, these setpoints are standardized from program to program. For example all control programs have a default heating economizer setpoint of 65°F. The default setpoints were chosen for several reasons including industry acceptance, pr
Slide 23: Room temperature control with 10 setpoints
The MRT-Expert system, as you would expect, controls the room air temperature. It was designed to mimic the room temperature controls of old that included a time clock, night setback thermostat and the Maxitrol Series 44 temperature control system. The system uses 10 setpoints: heating occupied and
Slide 24: Freeze protection
Just like all of the AdaptAire control systems, the MRT-Expert also provides freeze protection. If the discharge air temperature falls below the freeze stat setpoint for 3 continuous minutes, the fan will shut off. In the example shown here the setpoint is 45°. 24
Slide 25: Energy savings functions
The MRT-Expert has 2 energy savings functions that can save the customer money when heating and cooling are not required. These two modes disable the heating when the outside air temperature is above Heating Economizer setpoint and disable the cooling when the outside air temperature is below the Co
Slide 26: Fault control
Another function the MRT-Expert performs is fault control. The control module monitors all of the inputs and outputs. Should something function erroneously, the control module will take the appropriate action to insure the safe operation of the unit. An alarm light and audible alarm on the BACview w
Slide 27: Unit status screen
The MRT-Expert unit status screen gives the user a single place to observe the unit operation. With a glance the user can determine the fan and burner status and see which cooling stages are operating. The user can also check the room, outside air, discharge air, and mixed air temperatures. The scre
Slide 28: Clearing alarms and resetting counters
In the last to slides we discussed alarms and counters. Alarms can be manually cleared in one of two ways. They can be reset by a power interruption at the unit or using the BACview. The alarm, cycle, and runtime counters can also be reset from the unit reset screen. The user need only turn the rese
Slide 29: Time of day scheduling
The MRT-Expert control system provides time of day scheduling. The user can program up to 4 different daily schedules, 12 different holiday schedules and 2 override schedules. The daily schedules are ones that occur everyday. The holiday schedules are for specific dates and times and override the da
Slide 30: 24 hour operation scheduling
When 24 hour operation is desired, the user must choose the days for 24 hour operation. This allows the user to specify exactly which days the unit is to operate continually. For example a business may want to operate only 5 days per week with 24 hour operation but not Saturday or Sunday. The operat
Slide 31: User Configured Output
100% outside air units, using the MRT-Expert user interface, are provided with a unique feature called the User Configured Output. This control feature allows the system to take a 0-5VDC input signal and control a 0-10VDC output. The output is controlled around a user setpoint by a BACview selectabl
Slide 32: Example of the User Configured Output
Let’s look at an example of how this feature works. Again, I’ve used a simulation program to expand the display to view all of the setpoints at once once. I’ve I ve also added some plausible numbers for setpoints to demonstrate the functionality of this control feature. Suppose the user wishes to co
Slide 33: Another review of what we've learned
Let’s take a another break and go over what we’ve learned so far. You know the MRT-Expert user interface is called the BACview. You know the BACview is a keypad display that can be mounted up to 500’ from the unit or plugged directly into the control for use as a service tool. We discussed how the M
Slide 34: What the MRT-Expert cannot do and BAS integration
We’ve just seen what the AdaptAire MRT-Expert controls can do. Now let’s look at what they cannot do. There is not much the MRT-Expert system can’t do. Units using the MRT-Expert user interface system are among the easiest to integrate with a BAS BAS. BAS systems can send commands directly to the co
Slide 35: Contact your Applied Air application engineer
As you see, there are few functions that are not part of the AdaptAire MRT- Expert controls. If you have an application that doesn’t quite fit the control system, contact your Applied Air application engineer or technical service advisor for assistance. 35
Slide 36: Recap of this webinar
That’s an awful lot of information for one day so let’s recap what we learned in the this webinar. We learned the MRT-Expert remote user interface has an LCD display and an array of buttons that allow the user to adjust the room temperature setpoints, start and stop the unit, and provides system inf
Slide 37: Recap: damper control and setpoints
We talked about the 3 types of damper control. I mentioned that the minimum ventilation setpoint specifies the lowest percent of outside air the unit will deliver. We looked at how the system controls the room temperature with 10 setpoints. 37
Slide 38: Recap: protection, scheduling, user configured output
You heard that the control system provides freeze protection, energy savings, diagnostics, and fault control. We discussed the time clock scheduling function, and you learned why it’s necessary to select the days for 24 hour operation. Finally we discussed the versatility of the user configured outp
Slide 39: Conclusion and questions
This concludes the sixth AdaptAire webinar webinar. II’llll open the line for some questions questions. 39