WattMaster MG331-21-VAVCAV - Manual

Form: WMS-MG331-21-VAV-WMVAVController-01D.doc
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VAV System
Description
The VAV/CAV Controller Board is designed with
7 usable analog inputs, 2 analog outputs 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
WMVAV Controller by means of a modular cable.
The WMVAV Controller can be configured for
control of VAV Units (with or without VAVBOX
Controllers), Constant Volume Units and Air to Air
Heat Pump Units. Features include the following:
•
Up to 8 Stages Each of Cooling and Heating
(4 on board, 12 more with expansion boards)
• Selectable Control Sensor
• Fan Proving Interlock
• Wetbulb Control of Economizer Operation
•
Accepts Remote Occupied Signal
• Relief Pressure Control
• De-Humidification Capable
• Full Economizer Control
•
I.A.Q. Control with C0
2
Sensor Monitoring
•
Internal Trend Logging
• 7 Day, 2 Event per Day Scheduler Built In • 14 Day Holiday Scheduler Built In
•
Optimal Start Scheduling Built In
•
Override from Occupied to Unoccupied Mode
• Supply Air Reset Capability
• Accepts Remote HVAC Mode Selection
Most HVAC unit applications can be configured with the standard WMVAV Controller. If the application requires more inputs
and/or outputs, optional relay expansion boards are available from the factory to provide for additional analog, binary or digi-
tal inputs and outputs as required. These expansion boards are installed on either a 2 slot or 4 slot expansion base board
that connects to the WMVAV Controller board via a modular cable connection.
Mounting – Factory Installed
If purchased separately the WMVAV Controller is provided with an integral backplate and can be mounted in the HVAC unit
control panel or remotely located and wired to the HVAC unit.
RL Y1
D1
D2
D3
D4
D5
CX3
RAM EPROM
C3
C2
U6
PHILIPS
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
MC34064A
D13
C16
9936
VR2
7824CT
M
TB4
R27
C13
R10
VR1
C19 C18
NE5090NPB3192 0PS
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”
1.1”
.20 Dia.
Typ. of 4
Technical Data MG331-21-VAV Controller
Power 24 Volt AC Weight 1.5 lb.
Power Consumption 8 VA Maximum Network Connection RS-485
Operating Temp 10 ° F to 149 ° F Protocol HSI Open Protocol Token Passing
Operating Humidity 90% RH Non-Condensing Communications RS-485 - 9600 Baud
Inputs: Outputs:
Room Temperature Type III-10kohm sensor (1) Fan-ON/OFF
Supply Air Temperature Type III-10kohm sensor
Outside Air Temperature Type III-10kohm sensor
Static Pressure Sensor 0-5VDC
Humidity Sensor 4-20Ma
(4) User Configurable For :
Heating Or Cooling
Stages, Reversing Valve,
Warm-up Mode Box Com-
mand, Hot Gas Reheat
Control, Relief Fan Inter-
lock, Preheat Coil
(5) Relays - (2 Amp @ 24 VAC)
Remote Occupied Signal Binary Contact Economizer Analog Output 0-10 VDC
Fan Proof Of Flow Binary Contact VFD, Bypass or Inlet Vane
Control Analog Output 0-10 VDC
Three Year Warranty WattMaster reserves the right to change specifications without notice
MG331-21-VAVCAV
WMVAV Controller