WattMaster MUA II - Manual (Page 3)

Technical Guide 3
MUA II Controller
Features
The MUA II Controller Board is designed with 5 usable analog inputs
and 5 relay outputs. The controller’s 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 use 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
Controller Overview
• De-Humidifi cation Capable
• 7-Day, 2-Event-Per-Day Scheduler Built In
• 14-Day Holiday Scheduler Built In
• Internal Trend Logging
Most makeup air control confi gurations can be confi gured 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 the MUA 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.
Figure 1: MUA II Controller Dimensions
RL
Y1
D1
D2
D3
D4
D5
CX3
RAM EPROM
C3
C2
U6
CX6
C1
CX2 U2
U3
PAL
CX4
U4
TUC-5R PLUS
YS101816 REV. 2
V1
V2
V3
V5
V4
TB2
4
NETWORK
TOKEN
16
32
8
SW1
ADD
2
1
ADDRESS
V6
POWER
GND
24VAC
L1
D16
R6
C9
SC1
R1
1
U1
1
D13
C16
VR2
TB4
R27
C13
R10
VR1
C19 C18
U8
CX8 U9
X1
R7 D10
R13
D12
C7 CX10
U10
CX12
U12
U14
CX14
PJ3 PJ2
PJ1
EXPANSION
PRESSURE
SENSOR
T'STAT
C17 D15
R26
C20 R25
R24
R22
U15
CX13
U13
C15
R19
R15
C14
D18 D17
PU1
PU2
PU3
PU4
PU5
PU7
D6
D7
D8
D9
D11
D14
C12
C10 0-5 VDC 0-1 VDC JP1
C1
1
X2
GND
TB3
INPUTS
GND
GND
+VDC
AIN1
AIN2
AIN3
AIN4
AIN5
AOUT1
AOUT2
AIN7
RN4
1
RN5
RS-485
CX5
U5
R
TB1
SHLD
T
COMM
COMM
RN3
1
RN1
U1
CX1
1
LD6
COMM
PWR
LD7
LED1
LED2
LD9
LD8
R1
U7
RV1
VREF ADJ
R28
+VREF
5.11V
TEST POINT
EWDOG
D19
RN2
1
COM1-3
COM4-5
R5
R4
R3
R2
R1
RL
Y2
RL
Y3
RL
Y4
RL
Y5
CX15
(1 MEG)
HH
P1
C21
6.2“
6.6”
7.3”
6.7”
.20 Dia.
Typ. of 4