Mestek, Inc. · OTC:MCCK
Mestek — Technical Presentation
17 slides from Mestek's technical presentation
Slide 1: Welcome to the third AdaptAire webinar
Welcome to the third AdaptAire webinar webinar. 1
Slide 2: This webinar is the third in The AdaptAire Basics series
This webinar is the third 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 five. 2
Slide 3: The format for 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: Recap of the previous webinar: MDT control system
As I promised let’s get started with a recap of the previous webinar. In the 2nd webinar we learned the MDT control system is the most basic discharge temperature control system offer by Applied Air You know the remote user interface has 1 or 2 pots that control the unit and damper operations operat
Slide 5: MDT recap: limitations and configuration
I mentioned the MDT control system cannot do scheduling, change factory setpoints, or reset faults. You also heard that there is limited BAS control. Finally you learned that the unit can pretty much be configured to do most anything with a few minor modifications. 5
Slide 6: The MRT basic modulating room temperature interface
The MDT user interface is the basic modulating discharge temperature control, so it makes sense that the basic modulating room temperature interface is the MRT. The MRT and MDT have much in common. In the next few slides you’ll see how the MRT looks very much like the MDT. You’ll see that the that t
Slide 7: The basic MRT remote panel
Pictured is the basic MRT remote panel. It looks exactly like the MDT remote panel. In fact it is exactly the same remote panel that is used for the MDT remote. It fits on a 3 gang electrical box and can be mounted up to 500’ away from the unit. This remote is used for all of the different Applied A
Slide 8: MRT remote panel connectors and wiring
Just like the MDT, on the reverse side of the MRT remote panel there are 2 connectors. The first is the J1 connector. This is where the wiring between the unit control panel and the unit enable and damper control pots is terminated. The voltage to these terminals is 3VDC. The second green plug is th
Slide 9: Unit enable pot and recap of the MRT remote
Once the remote panel is wired to the main control panel, the unit enable pot need only be rotated slightly clockwise to start the fan. An important thing to remember with the basic remote user interface is that the unit is started by rotating the unit enable pot. You may recall the old style remote
Slide 10: The MRT system as basic DDC room temperature control
The MRT AdaptAire system is the most basic DDC room temperature control available from Applied Air. It was designed to mimic the room temperature controls of old. The old controls had a switch to start the fan. It had another to turn on the heat and a pot to adjust the room air temperature setpoint.
Slide 11: What else does the MRT do?
What else does the MRT do? The MRT control also provides freeze protection by shutting off the unit if the discharge temperature drops below 45°F for three continuous minutes. The MRT has 2 energy savings functions that can save the customer money when heating and cooling are not required. These two
Slide 12: What the AdaptAire MRT controls cannot do
We’ve just seen what the AdaptAire MRT controls can do. Now let’s look at what they cannot do. The MRT controls do not have a time clock function. Thus it cannot perform a night setback function. The MRT controls do not allow the user to change any of the factory programmed setpoints such as the hea
Slide 13: Adding items to do the can't-do functions
You’ve just heard about the limitations of the AdaptAire MRT controls, but by adding a few other items to the controls it is possible to do some of those previously mentioned CAN’T DO items. On a unit with MRT controls there are at least 2 ways to remotely start and stop using a switch or relay. One
Slide 14: Adding functions not part of the MRT controls
As you see, most any function that is not part of the AdaptAire MRT controls can be added. 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. 14
Slide 15: Recap of what we learned about the MRT
Let’s take a moment to digest everything we’ve discussed so far. We learned the MRT is the most basic room temperature control system and the remote user interface has 1 or 2 pots that control the unit and damper operation. We discussed the wiring for the remote and saw the plugs on the back back. Y
Slide 16: Recap: MRT limitations and workarounds
I mentioned the MRT control system cannot do scheduling, change factory setpoints, or reset faults. You also heard that there is limited BAS control. Finally you learned that the unit can pretty much be configured to do most anything with a few minor modifications. 16
Slide 17: This concludes the third AdaptAire webinar
This concludes the third AdaptAire webinar webinar. I’ll I ll open the line for some questions questions. 17