Mounting and Wiring VMA1200 Series Controllers Technical Bulletin
14
Wiring the VMA
All field wiring, with the exception of the L
ON
W
ORKS
Network Bus,
must be kept in the same room with the controllers, to comply with
UL smoke control requirements. Refer to the
Metasys Smoke Control
Wiring Technical Bulletin (LIT-636331)
for details on smoke control
requirements.
Refer to the project engineering drawings for wiring details.
To wire the VMA:
1.
Disconnect all power to the VMA.
2.
Determine if spade lugs or removable 2- or 3- position screw
terminals or phone cable is to be used. See the
Variable Air
Volume Modular Assembly (VMA) 1200 Series Overview and
Engineering Guidelines Technical Bulletin (LIT-1162350)
for
screw terminal kit order number.
2-position Removable Screw Terminal Connector
Snapons
Figure 8: Optional Removable Screw Terminals, 2- or 3-position
(Accessory)
3.
Terminate wiring per engineering drawings.
Table 5: Terminations for Cooling Only Applications (VMA1210)
Name
Description
AI-1 *
Zone temperature
AI-2 *
Zone setpoint
BI-1 *
Temporary occupied (TE-6700 and TE-7000 [Europe only])
BI-2
Comfort (occupied)
BI-3
Window, off (shutdown)
Zone Bus *
Local communication bus
*
Connected through an 8-pin phone cable from the room sensor.
