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Related Manuals for AAON MUA II
Summary of Contents for AAON MUA II
- Page 1 FACTORY CONTROLS SYSTEM MUA II Controller Technical Guide...
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Page 2: Table Of Contents
Visit our web site at www.orioncontrols.com Form: AO-MUAII-TGD-01A Copyright 2002 WattMaster Controls, Inc. AAON is a registered trademark of AAON, Inc., Tulsa, OK. WattMaster Controls, Inc. assumes no responsibility for errors, or omissions. This document is subject to change without notice. -
Page 3: Controller Overview
2 slot or 4 slot expansion boards that plug • into the MUA II Controller by means of a modular cable. The MUA II Internal Trend Logging Controller is designed for used with Makeup Air HVAC units. Features •... - Page 4 0.28 2.12 5.96 4.73 5.40 8.29 9.52 8.96 4.00 2 Slot Expansion Base Board 0.28 2.12 4.24 4 Slot Expansion Base Board Figure 2: Expansion Base Boards Dimensions 1.67 4.24 4.00 Figure 3: Relay Expansion Board Dimensions MUA II Controller...
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Page 5: Controller Inputs And Outputs
For component locations of the inputs on the MUA II Controller see Figure 4. For wiring of inputs and outputs see Input #3: Remote Occupied Contact Figure 5 and 6. -
Page 6: Controller Installation & Wiring
These relays are available by using Relay Expansion boards connected This input is used for an Outdoor Air Humidity sensor that, combined to the MUA II controller. Relays can be configured in any order but we with the outdoor air temperature, is used to calculate a Dewpoint Tem- recommend that they be configured in the following order: perature for the purpose of dehumidification. -
Page 7: Expansion Board Installation & Wiring
Expansion Base Board must be set cor- The expansion boards are connected to the MUA II Controller with a rectly for proper operation. See Figure 6 for correct jumper settings modular cable. -
Page 8: Wiring Considerations
Relay Output #18 - Configurable (N.O. Dry Contact) Relay Output #19 - Configurable (N.O. Dry Contact) Relay Output #20 - Configurable (N.O. Dry Contact) Relay Output #21 - Configurable (N.O. Dry Contact) Common YS101790 4RLY IO BD. Figure 7: Expansion Board Wiring MUA II Controller... -
Page 9: Wiring Details
SupplyAir Temperature Sensor must be connected to the MHGRV II controller, not the For systems that are only using the MUA II controller and are not MUA II controller. If you have either of these supplied with The MODGAS II or MHGRV II controllers, the Supply... -
Page 10: Outside Air Temperature Sensor
Figure 10: Outside Air Temperature Sensor Wiring Remote Occupied Contact pied modes on the MUA II controller. This relay contact must be a dry contact and be wired as shown below. See Figure 11 below for detailed A Remote Occupied contact closure supplied from another Building wiring . -
Page 11: Outside Air Humidity Sensor
250 Ohm, 1/4 Watt, 1% resistor needs to be installed between “AIN 5” and “GND”. See Figure 12 for detailed wiring. If you want to install a humidity sensor onto the MUA II controller, it is important that you follow these instructions. There are 2 terminals Warning: It is very important to be certain that all wiring is labeled “H+”... -
Page 12: Start-Up & Commissioning
All MUA II controllers are equipped with address switches. If the of the boards. Expansion Boards must be wired in MUA II controller is to operate as a stand alone system (not connected such a way that power to both the expansion boards to any other controllers) the controller address switch should be set for and the controller are always powered together. -
Page 13: Initialization
The next step is programming the controller for your specific require- occur: ments. In order to configure and program the MUA II controller you must have a central operators interface or a personal computer with the On system powerup a 30 second start-up delay is performed where all Prism computer front end software installed. -
Page 14: Sequence Of Operations
Temperature Protect Mode Cool This mode occurs when the controller reads an OAT one Cooling The diagrams that follow depict the operational modes of the MUA II Deadband above the Supply Air Setpoint and a Dewpoint Tempera- controller. ture below the Dewpoint Setpoint. The migration table for this mode is shown below. - Page 15 1.) Unit Hot Gas Reheat This mode occurs when the controller reads an OAT between the Cool- Two kinds of Hot Gas Reheat are available with the MUA II ing and Heating Deadband from the Supply Air Setpoint, and a controller, ON/OFF Hot Gas Reheat control and Modulating Dewpoint reading below the Dewpoint Setpoint.
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Page 16: Initialization
Supply Temperature Setpoint. If the MODGAS II is connected Resets to the system, the MUA II board will send the Supply Temperature Setpoint to the MODGAS II in order to modulate to the desired Sup- Supply Temperature Reset from Space Temperature ply Temperature. -
Page 17: Scheduling
Technical Guide Sequence Of Operations Other Control Options the feature of viewing the current time the MUA II Controller is using, you must install a Personal Computer and the PRISM computer front Fan Proof Of Flow Switch end software. The MUA II controller can monitor a Fan Proof of Flow Switch contact closure on analog input #7. -
Page 18: Internal Trend Logging
When the MUA II controller is powered up the “PWR” LED should The MUA II controller is equipped with LEDs that can be used as very light up and stay on continuously. If it does not light up, check to be powerful troubleshooting tools. - Page 19 System Manager must be connected to a local communications loop Guide for more information or contact the factory for further assistance. either at the MUA II controller as shown in Figure 20 or to another controller on the same local communications loop. If you are using the...
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Page 20: Appendix
Use the voltage column to check sensors while connected to powered If the voltage is less than 0.05 VDC, the sensor or wiring is shorted. controllers. Read voltage with meter set on DC volts. Place the “-”(mi- MUA II Controller... - Page 21 Technical Guide OE265 Relative Humidity Transmitters – Humidity vs. Voltage Humidity Voltage Humidity Voltage Humidity Voltage Humidity Voltage Percentage Percentage Percentage Percentage Input Input Input Input (RH) (RH) (RH) (RH) (VDC) (VDC) (VDC) (VDC) 1.00 2.04 3.08 4.12 1.08 2.12 3.16 4.20 1.16...
- Page 22 Technical Guide Notes MUA II Controller...
- Page 23 Technical Guide Notes VAV/CAV Controller...
- Page 24 • WattMaster Controls Inc. 8500 NW River Park Drive Parkville, Mo. 64152 Phone (816) 505-1100 www.orioncontrols.com Fax (816) 505-1101 2425 So. Yukon Ave • Tulsa, OK 74107-2728 AAON, Inc. Ph: (918) 583-2266 • Fax: (918) 583-6094 AAON Part No. R08120...
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