Orion System SA Controller - Manual (Page 5)

SA Controller Operator Interface
System Connections
5
Modular System Manager
As previously described, when you are connecting the Modular System
Manager to a Networked System, the Modular System Manager is con-
nected to the communications and power loop of the system via modular
cables. These cables simply plug into the System Manager board and to
any device with modular connectors on any local loop on the system.
Devices with modular connectors include the Power/Comm Distribution
Board, VAV/Zone Controller, and MiniLink Polling Device. By using
these plug-in connections, wiring errors are virtually eliminated and
system installation is fast and easy. See Figure 4 below for typical con-
nection information. See Figure 5 on page 6 for typical Power/Comm
board wiring and connection information.
Modular System Manager
Figure 4: Modular System Manager - Networked
When the System Manager is to be connected to a Stand Alone system,
a 12-foot cable with modular connectors on one end and stripped wire
ends on the other end is provided for this purpose. This is used to fa-
cilitate connecting communications and power wiring to the Modular
System Manager from a 24 VAC power source and to the HVAC unit
controller communication wiring terminals. See Figure 6 on page 7
for wiring details. If the supplied cable wire is not long enough for
your installation, a standard modular cable of the correct length can
be purchased through WattMaster and one of the modular connectors
can be cut off to allow for the transformer and communication terminal
wiring connections. It is recommended that you do not splice the com-
munications wire if at all possible. The transformer should be rated at
6 VA minimum power output.