Orion MUA II User Manual
FACTORY CONTROLS SYSTEM
MUA II Controller
Technical Guide
Table Of Contents
Controller Overview ......................................................................................................................................... 3
Features ..................................................................................................................................................................................... 3
Controller Inputs and Outputs ......................................................................................................................... 5
General....................................................................................................................................................................................... 5
MUA II Controller Analog Inputs: ................................................................................................................................................. 5
Controller Installation & Wiring ....................................................................................................................... 6
General....................................................................................................................................................................................... 6
Controller Mounting .................................................................................................................................................................... 6
MUA Controller Relay Outputs.................................................................................................................................................... 6
Expansion Board Relay Outputs................................................................................................................................................ 6
Important Wiring Considerations .............................................................................................................................................. 6
Expansion Board Installation & Wiring ........................................................................................................... 7
Jumper Settings ......................................................................................................................................................................... 7
Wiring Considerations ............................................................................................................................................................... 8
Wiring Details ................................................................................................................................................... 9
Space Temperature Sensor ....................................................................................................................................................... 9
Supply Air Temperature Sensor ................................................................................................................................................. 9
Outside Air Temperature Sensor ............................................................................................................................................. 10
Remote Occupied Contact ....................................................................................................................................................... 10
Outside Air Humidity Sensor.....................................................................................................................................................11
Space Humidity Sensor ............................................................................................................................................................11
Fan Proof Of Flow Switch ..........................................................................................................................................................11
Start-up & Commissioning ............................................................................................................................ 12
Controller Addressing .............................................................................................................................................................. 12
Power Wiring ............................................................................................................................................................................ 12
Initialization:.............................................................................................................................................................................. 13
Programming The Controller ................................................................................................................................................... 13
Sequence Of Operations ............................................................................................................................... 14
MUA Operation Overview .......................................................................................................................................................... 14
MUA Modes............................................................................................................................................................................... 14
Initialization............................................................................................................................................................................... 16
MUA II Configuration & Setup ................................................................................................................................................... 16
Scheduling ............................................................................................................................................................................... 17
Force Modes or Overrides....................................................................................................... ................................................. 17
Internal Trend Logging ............................................................................................................................................................. 18
Troubleshooting ............................................................................................................................................. 18
Using LED’s To Verify Operation .............................................................................................................................................. 18
Appendix ........................................................................................................................................................ 20
WattMaster Controls Inc.
8500 NW River Park Drive · Parkville , MO 64152
Toll Free Phone: 866-918-1 100
PH: (816) 505-1100 · F AX: (816) 505-1 101 · E-mail: mail@wattmaster .com
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.
Controller Overview
Technical Guide
Features
The MUA II Controller Board is designed with 5 usable analog inputs,
and 5 relay outputs. The controllers input and output capabilities can
be expanded by use of either 2 slot or 4 slot expansion boards that plug
into the MUA II Controller by means of a modular cable. The MUA II
Controller is designed for used with Makeup Air HVAC units. Features
include the following:
• Up to 8 Stages of Cooling (4 on board, 4 more with
expansion board)
• Up to 8 Stages of Heating (4 on board, 4 more with
expansion board)
• External Modulating Heat
• Fan Proving Interlock
• Supply Air Setpoint Reset From Temperature Input
• Dewpoint Setpoint Reset From Humidity Input
• Accepts Remote Occupied Signal
• De-Humidification Capable
• 7 Day, 2 Event per Day Scheduler Built In
• 14 Day Holiday Scheduler Built In
• Internal Trend Logging
• Direct Connection With MODGAS II And REHEAT II
Controllers
Most makeup air control configurations can be configured with the
standard MUA II Controller. If the application requires more outputs,
optional relay expansion boards are available from the factory to provide
for additional relay outputs as required. These expansion boards are
installed on eithMUA II Controller board via a modular cable connection.
The available expansion board configurations allow for up to 16
additional binary (relay) outputs. The various expansion boards connect
to the expansion board base. Jumpers must be set according to the
board type installed. Up to 4 Relay Output Expansion Boards can be
installed on the expansion base board connected to the controller.
.20 Dia.
Typ. of 4
7.3”
C21
TB1
COMM
T
SHLD
R
CX5
LD6
COMM
LD7
PWR
LD8
LED1
LD9
LED2
R1
U7
RV1
VREFADJ
INPUTS
+VDC
AIN1
AIN2
AIN3
AIN4
AIN5
GND
GND
AOUT1
AOUT2
AIN7
GND
PJ1
TB3
PRESSURE
SENSOR
CX1
RN1
1
U5
RS-485
COMM
1
RN3
P1
+VREF
5.11V
TESTPOINT
EWDOG
RN5
C10
C12
C17
R26
EXPANSION
6.2“
U3
CX2
U2
U1
RAM
HH
U6
C1
R28
ADD
ADDRESS
1
2
4
PU1
8
D6
16
PU2
32
D7
TOKEN
PU3
NETWORK
D8
PU4
SW1
D9
PU5
D11
PU7
D14
D15
C20
PJ2
X2
0-1
0-5
VDC
VDC
JP1
U13
R15
C14
R19
CX13
U15
C15
R22
R24
R25
CX15
PJ3
EPROM
TUC-5RPLUS
YS101816REV. 2
U10
C11
U14
D17
CX3
(1MEG)
CX6
C2
C3
CX10
CX12
U12
CX14
D18
C18
T' STAT
D1
CX4
U4
RLY1
D2
RLY2
D3
PAL
1
RLY3
D4
RN2
RLY4
D5
X1
RLY5
1
RN4
U9
C7
D10
R7
L1
D13
D12
R13
SC1
D19
C19
VR1
VR2
CX8
R10
D16
COM1-3
COM4-5
R6
R11
R27
V6
C9
R1
R2
R3
R4
R5
U8
V1
V2
V3
V4
V5
U11
C13
C16
TB4
GND
POWER
24VAC
TB2
6.6”
6.7”
Figure 1: MUA II Controller Dimensions
MUA II Controller 3
Technical Guide
Controller Overview
2.12
TB2
TB1
C6
GND
24VAC-IN
PWR
LD1
R14
D3
VR2
VR3
4.73
VR4
VR5
VR6
R13
MC
7824CT
CX3
MC
7805ACT
MC
7812CT
MC
7824CT
MC
7824CT
2 Slot Expansion
Base Board
C1
C2 C3
C4 C5
4.24
GND
+24VDC-OUT
YS101780
4.00
4.00
0.28
TB2
TB1
GND
+24VDC-OUT
GND
24VAC-IN
PJ2
PJ1
R11
R9
D2D1 R8
R7
P1
U1
P82B715P
CX1
JP1
R1
R2
R3
U2
P2 JP2
LM358N
CX2
VR1
R10
R4
2 SLOT MODULAR I/O
R5
R6
R12
5.96
5.40
C8
VR2
VR3
VR4
VR5
VR6
9.52
VR7
VR8
LD1
PWR
R20
D3
7824CT
7805ACT
7812CT
7824CT
7824CT
7824CT
7824CT
4 SLOTMODULAR I/O BD.
YS101782
PJ2
PJ1
R17
R19
CX3
R15
D1
D2
C1
R13
R14
P1
U1
P82B715P
C2
C3
C4
C5
C6
C7
CX1
JP1
R1
R2
R3
U2
P2
LM358N
CX2
JP2
R5R4 R6
P3
JP3
R9R8R7
P4
VR1
R16
JP4
R10
R11
R12
R18
8.29
8.96
0.28
Figure 2: Expansion Base Boards Dimensions
V4
4RLY IO BD.
K4
YS101790
4.00
K3
K4
OMRON
24VDC
G5L-114P-PS
OMRON
24VDC
G5L-114P-PS
K3
RN1
1.67
UL 5A250VAC
CONTACT:
UL 5A250VAC
CONTACT:
K2
OMRON
24VDC
G5L-114P-PS
OMRON
24VDC
G5L-114P-PS
K1
2.12
4 Slot Expansion
Base Board
TB1
V1
UL 5A250VAC
CONTACT:
K1
UL 5A250VAC
CONTACT:
K2
4.24
4.24
Figure 3: Relay Expansion Board Dimensions
4
U3
CX3
PCF8574P
74HC04N
U2
CX2
AN
ID
U1
ULN2803A/
PHILIPS
TL
HA
CX1
P1
MUA II Controller
Technical Guide
RS-485
Communications
Loop Connection
RS-485
Communications
Driver Chip
Comm
LED
Power
LED
Diagnostic
Blink Code
LED
Pull-up Resistors
For Analog Inputs
Analog Input
And Output
Terminal Block
Pressure Sensor
(AIN6 Modular Connection)
Not
Used
Modular Service
Tool - Mini Din
Connector
C21
TB1
COMM
T
SHLD
R
CX5
LD6
COMM
LD7
PWR
LD8
LED1
LD9
LED2
R1
U7
RV1
VREF ADJ
INPUTS
+VDC
AIN1
AIN2
AIN3
AIN4
AIN5
GND
GND
AOUT1
AOUT2
AIN7
GND
PJ1
TB3
PRESSURE
SENSOR
Typical
Pin 1
Indicator
CX1
RN1
1
U1
U5
RS-485
COMM
1
RN3
P1
+VREF
5.11V
TEST POINT
EWDOG
RN5
C10
C12
D15
C17
C20
R26
EXPANSION
Mounting Hole
EPROM
RAM
Chip
Chip
ADD
1
2
4
8
16
32
TOKEN
NETWORK
VDC
JP1
PJ3
X2
R15
C14
R19
C15
R22
R24
R25
U3
EPROM
TUC-5R PLUS
YS101816 REV.2
C2
CX10
U10
C11
U12
CX14
U14
D17
T'STAT
(1 MEG)
C3
CX3
CX4
U4
PAL
1
RN2
CX6
X1
1
RN4
U9
C7
D10
CX12
D12
R13
SC1
D19
D18
C19
C18
VR1
CX2
U2
RAM
HH
U6
C1
R28
ADDRESS
PU1
D6
PU2
D7
PU3
D8
PU4
SW1
D9
PU5
D11
PU7
0-1
0-5
VDC
D14
U13
CX13
U15
CX15
PJ2
PAL
Chip
D1
RLY1
D2
RLY2
D3
V1
V2
V3
COM1-3
R1
R2
RLY3
D4
R3
R4
R5
RLY4
RLY5
R7
COM4-5
D5
CX8
L1
R10
D13
D16
TB2
V4
V5
U8
R6
C9
R11
U11
C13
C16
TB4
GND
R27
V6
POWER
24VAC
VR2
Typ o f 4
Mounting
Backplate
Relay Output
Terminal Block
Address Switch
EEPROM
24 VAC
Power Input
Expansion Board
(Modular Connection)
Figure 4: MUA II Controller Component Locations
Controller Inputs and Outputs
General
The following inputs and outputs are available on the MUA II controller
and/or the relay expansion boards that can be added to the main controller board expansion port. For component locations of the inputs on the
MUA II Controller see Figure 4. For wiring of inputs and outputs see
Figure 5 and 6.
MUA II Controller Analog Inputs:
Input #1: Reset Temperature Sensor
A space temperature sensor can be connected here and used for modulation of the Supply Air Setpoint. At a specified Space Temperature
Setpoint the Supply Air Setpoint will be reset towards the Maximum
Supply Air Temperature Setpoint
VAV/CAV Controller
Not Used
Real Time
Clock Chip
Input #2: Supply Air Temperature
The Supply Air Temperature sensor is connected to this input. This
sensor is used to control heating and cooling staging.
Input #3: Remote Occupied Contact
This input can be configured to monitor a contact closure from another
building automation system, that indicates that the equipment should be
operating in the occupied mode. If the remote occupied signal is being
monitored, you must program all the internal schedules to be zero for
both the start and stop times on every day of the week.
5
Technical Guide
Controller Inputs and Outputs
Input #4 - Outdoor Air Temperature
The Outdoor Air Temperature Sensor is connected to this input. The
Outdoor Air Temperature Sensor is used to initiate the heating, cooling
and vent modes of operation. It is also used in combination with the
outdoor air humidity to calculate the Dewpoint Temperature.
Input #5 - Outdoor Air Humidity
This input is used for an Outdoor Air Humidity sensor that, combined
with the outdoor air temperature, is used to calculate a Dewpoint Temperature for the purpose of dehumidification.
Input #6 - Not Used
Input #7 - Fan Proof of Flow Switch
or Reset Humidity Sensor
A Proof of Flow Switch that provides a contact closure whenever the
fan is moving air, can be monitored on this input. If this contact opens
while the fan is on, all heating and cooling is suspended. This is an
optional item. If a switch is installed, the user must configure the MUA
II to utilize the signal. If this option is not configured the unit will
default to reset humidity input. An indoor Humidity Sensor can be
installed on this input instead of the Proof of Flow Switch. This extra
Humidity Sensor is used to provide for reset of the Dewpoint setpoint
Relay Outputs
Relay #1 - Fan (Enable)
This is a non-configurable output.
Relay #2 - #5 Configurable Relays
These relays are located on the MUA Controller. Configuration order
and options are the same as for relays #6 -#21 as outlined in the information for these relays that follows.
Relay #6 – #21 Configurable Relays
These relays are available by using Relay Expansion boards connected
to the MUA II controller. Relays can be configured in any order but we
recommend that they be configured in the following order:
1. Heating (aux. heating) stages
2. Cooling (compressor) stages
3. Gas Reheat Control for De-Humidification
4. External Heat Enable
You can have up to 8 stages of Heating (aux. heating) and 8 stages of
Cooling (compressors) as well as individual relays assigned to options 3
and 4 above.
Analog Output
AOUT1
The MUA II controller has 1 Analog Output available. The usable output is located at terminal AOUT1and is used for controlling an external
heating device. Voltage ranges for this output are user configurable for
either a 0-10 VDC or 2-10 VDC signal.
Controller Installation & Wiring
General
Correct wiring of the MUA II controller is the most important factor in
the overall success of the controller installation process. In general most
MUA II controllers are factory installed and wired at the AAON
factory. It is also possible to purchase these controllers directly from
W attMaster Controls for installation in the field. Some of the following
information pertains to field wiring and may not apply to your installation since it was pre-wired at the factory. However, in the unlikely
event that troubleshooting of the controller is required, it is a good idea
to be familiar with the system wiring, no matter if it was factory or field
wired.
Controller Mounting
When the controller is to be field mounted, it is important to mount the
controller in a location that is free from extreme high or low temperatures, moisture dust and dirt. It is recommended that it be installed in
the HV AC unit control panel. If this is not practical, it should be mounted
in a separate control enclosure that is weathertight. Be careful not to
damage the electronic components when mounting the controller. Remove the controller from its backplate. Mark the control enclosure base
using the backplate as a template. Drill pilot holes in the enclosure base
and secure the backplate to it using sheet metal screws. Do not allow
metal shavings to fall onto the circuit board. Reattach the controller to
the backplate.
Important Wiring Considerations
Please carefully read and apply the following information when wiring
the MUA II controller. See Figure 5 for MUA II controller wiring
diagram.
1. All 24 VAC wiring must be connected so that all ground
wires remain common. Failure to follow this procedure
can result in damage to the controller and connected
devices.
2. All wiring is to be in accordance with local and national
electrical codes and specifications.
3. Minimum wire size for 24 VAC wiring should be 18 gauge.
4. Minimum wire size for all sensors should be 24 gauge.
Some sensors require 2 conductor wire and some require 3
conductor.
5. Be sure that all wiring connections are properly inserted
and tightened into the terminal blocks. Do not allow wire
strands to stick out and touch adjoining terminals which
could potentially cause a short circuit.
6
MUA II Controller
Technical Guide
6. When communication wiring is to be used to interconnect
controllers together or to connect to other
communication devices, all wiring must be minimum 18
gauge, 2 conductor, twisted pair with shield.
Connect To Next Controller And/Or
MiniLink PD On Local Loop
For Stand Alone Applications
Connect To System Manager
C21
CX1
RN1
All Comm Loop Wiring Is
Straight Thru
TtoT
RtoR
SHLD to SHLD
Analog Inputs
See Individual Sensor
Wiring Diagrams For
Detailed Sensor Wiring
0-10 VDC
0r 2-10 VDC
Connect To
External Heat
Device If Used
Local Loop RS-485
9600 Baud
+
_
1
T
SHLD
R
COMM
LD7
PWR
LED1
LD9
LED2
U7
+VDC
AIN1
AIN2
AIN3
AIN4
AIN5
GND
GND
AOUT1
AOUT2
AIN7
GND
PJ1
CX5
RV1
VREFADJ
U1
U5
RS-485
COMM
1
RN3
P1
+VREF
5.11V
TESTPOINT
EWDOG
RN5
C10
C12
C17
C20
R26
EXPANSION
HH
C1
R28
ADDRESS
PU1
D6
PU2
D7
PU3
D8
PU4
D9
PU5
D11
PU7
D14
U13
D15
PJ2
TB1
COMM
LD6
LD8
R1
INPUTS
TB3
PRESSURE
SENSOR
Note: All Temperature Sensors Must Be Thermistor Type III Which
Provide 10K Ohms Resistance @77 Deg. F
Figure 5: MUA II Controller Wiring
MUA II Controller
U3
CX2
U2
EPROM
RAM
TUC-5RPLUS
(1MEG)
YS101816REV. 2
U6
CX6
C2
PHILIPS
ADD
SW1
0-5
0-1
VDC
VDC
CX13
U15
CX15
1
2
4
8
16
32
TOKEN
NETWORK
JP1
PJ3
C3
CX10
U10
CX12
C11
X2
R15
U12
CX14
C14
R19
U14
C15
R22
R24
R25
D18
D17
C18
T' STAT
Connect To
Expansion Board
Base (When Used)
7. Before applying power to the MUA II controller, be sure
to recheck all wiring connections and terminations
thoroughly.
CX3
X1
D1
CX4
U4
RLY1
D2
RLY2
D3
PAL
1
RLY3
D4
RN2
RLY4
D5
RLY5
1
RN4
U9
C7
D10
R7
L1
D13
D12
R13
SC1
D19
C19
7824CT
M
VR1
VR2
R10
CX8
D16
COM1-3
COM4-5
R11
R27
V1
V2
R1
R2
R3
R4
R5
U8
NE5090NPB3192
0PS
R6
C9
9936
U11
MC34064A
C13
C16
GND
V6
POWER
24VAC
V3
TB2
V4
V5
TB4
R - 24VAC
G - Fan ON/OFF Only
Relay Output Dry Contacts
R2 Thru R5 May Be User Configured For
The Following:
1 - Heating (Aux. Heating)Stages
2 - Cooling (Compressor) Stages
3 - Gas Reheat Control For Dehumidification
4 - External Heat Enable
Note: Up To 16 More Relays Are Available
By Adding Relay Expansion Boards. All
Expansion Board Relay Outputs Are User
Configurable As Listed Above.
GND
24VAC
Required VA For
Transformer = 8VA
Warning:
24 VAC Must Be Connected So That All Ground
Wires Remain Common. Failure To Do So Will
Result In Damage To The Controllers.
Line Voltage
Expansion Board Installation & Wiring
Jumper Settings
The expansion boards are connected to the MUA II Controller with a
modular cable. Up to 2 Expansion Base Boards can be populated with
expansion boards to provide additional inputs and outputs. The expan-
4 Relay Output Expansion Board
K1
V1
Relay Outputs - 6 Through 21
N.O. Contact #6 - Configurable
N.O. Contact #7 - Configurable
N.O. Contact #8 - Configurable
N.O. Contact #9 - Configurable
Common
TB1
V4
4RLY IO BD.
UL 5A250VAC
CONTACT:
24VDC
G5L-114P-PS
OMRON
UL 5A250VAC
CONTACT:
24VDC
G5L-114P-PS
OMRON
K4
YS101790
Relays 6-9 Relays 10-13
Figure 6: Expansion Board Jumper Settings
VAV/CAV Controller
sion boards can be placed on the expansion base board in any order,
however, the jumpers on the Expansion Base Board must be set correctly for proper operation. See Figure 6 for correct jumper settings
and jumper locations.
K2
UL 5A250VAC
CONTACT:
K1
24VDC
G5L-114P-PS
OMRON
K2
UL 5A250VAC
CONTACT:
24VDC
G5L-114P-PS
K3
RN1
OMRON
K3
K4
Relays 14-17 Relays 18-21
CX1
P1
ULN2803A/
PHILIPS
TL
HA
AN
ID
U1
CX2
74HC04N
U2
PCF8574P
Address Jumpers
Jumpers
Under
Expansion
Board To Be
Set As Shown
7
Technical Guide
Expansion Board Installation & Wiring
Wiring Considerations
The expansion base boards must be connected to 24 VAC as shown in
the wiring diagram below. As noted below, the power requirement for a
Observe Polarity! All boards must be wired with GND-to-GND and 24VAC-to-24VAC.
Failure to observe polarity will result in damage to one or more of the boards. Expansion
Boards must be wired in such a way that power to both the expansion boards and the
controller are always powered together. Loss of power to the expansion board will cause the
controller to become inoperative until power is restored to the expansion board.
Relay Output #6 - Configurable (N.O. Dry Contact)
Relay Output #7 - Configurable (N.O. Dry Contact)
Relay Output #8 - Configurable (N.O. Dry Contact)
Relay Output #9 - Configurable (N.O. Dry Contact)
Common
two slot base board is 10 VA. A four slot base board requires 20 VA. Be
sure that the transformer used for powering the base boards meets these
minimums. See Figure 7 for complete wiring details.
WARNING!!
24VAC
POWER
INPUT
Connect to
MUA
Controller Board
24VAC
GND
4RLY IO BD.
YS101790
Relay Output #10 - Configurable (N.O. Dry Contact)
Relay Output #11 - Configurable (N.O. Dry Contact)
Relay Output #12 - Configurable (N.O. Dry Contact)
Relay Output #13 - Configurable (N.O. Dry Contact)
Relay Output #14 - Configurable (N.O. Dry Contact)
Relay Output #15 - Configurable (N.O. Dry Contact)
Relay Output #16 - Configurable (N.O. Dry Contact)
Relay Output #17 - Configurable (N.O. Dry Contact)
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)
Figure 7: Expansion Board Wiring
Common
Common
Common
4RLY IO BD.
4RLY IO BD.
4RLY IO BD.
YS101790
YS101790
YS101790
8
MUA II Controller
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