Johnson Controls VMA1200 Series, Mounting And Wiring Instruction, Page: 1 / 18

Technical Bulletin
Issue Date July 1, 2003
© 2003 Johnson Controls, Inc. www.johnsoncontrols.com
Code No. LIT-1162360 M-Tool Release 5.3
Mounting and Wiring VMA1200 Series Controllers
Mounting and Wiring VMA1200 Series Controllers............................2
Introduction......................................................................................................... 2
Key Concepts...................................................................................................... 3
VMA Position and Orientation ........................................................................................... 3
Determine and Set Damper Polarity ................................................................................. 3
Wiring and Cabling Precautions........................................................................................ 4
VMA Internal Schematic Diagram ..................................................................................... 6
Phone Jack Polarization.................................................................................................... 8
Detailed Procedures......................................................................................... 10
Preparing the VMA for Mounting..................................................................................... 10
Mounting the VMA........................................................................................................... 11
Setting the Damper Position ........................................................................................... 12
Wiring the VMA ............................................................................................................... 14
Connecting the L
ON
W
ORKS
Network Bus........................................................................ 15