2 slot expansion base board wiring, Component & system wiring 27 – WattMaster VAV User Manual
Page 27
Component & System Wiring
27
Notes:
1.)All Wiring To Be In Accordance With
Local And National Electrical Codes
and Specifications.
FILENAME
DATE:
B. Crews
DESCRIPTION:
PAGE
DRAWN BY:
Component Wiring Diagram
JOB NAME
03/24/04
VAV-2SlotExpBase.CDR
2 Slot Expansion Base Board
1 of 1
VR5
MC
7824CT
C6
TB2
VR3
7805ACT
R14
VR2
D3
7824CT
MC
MC
VR4
7812CT
MC
GND
+24VDC-OUT
GND
24VAC-IN
TB1
CX3
R13
PWR
LD1
C1
PJ2
R11
C2
C3
U1
PJ1
R9
R7
D2
D1
R8
P1
R1
CX1
R2
R3
JP1
2
SLO
TMODULAR
I/O
2
SL
O
TMODULAR
I/O
VR6
7824CT
MC
LM358N
YS101780
C4
C5
U2
VR1
R12
R6
CX2
R10
R4 R5
P2
JP2
Connect To Unit Controller Board
Transformer Load = 10VA
WARNING!!
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.
Line Voltage
24VAC
GND
Jumpers Must Be Set
According To Type Of
Expansion Board Used
See Expansion Board
Specific Wiring For
Jumper Settings
2 Slot Expansion Base Board Wiring