Orion System SA Controller - Manual (Page 31)

SA Controller Technical Guide
Installation & Wiring
31
E-BUS Distribution Module Overview and Wiring
Figure 26: E-BUS Distribution Module Wiring Diagram
E-BUS Distribution Module
The E-BUS Distribution Module ( OE365-23-EBD-A) is a communica-
tions device that allows WattMaster-approved E-BUS Modules to be
connected to the SA Controller with I
2 C communications.
The E-BUS Distribution Module allows the following E-BUS Modules
to be connected to the SA Controller:
• Two Condenser Head Pressure Module ( OE370-23-HP2C)
• Water Source Heat Pump Protection Module
( OE334-23-WPM-A)
The E-BUS Modules are connected to the E-BUS Distribution Module
by HSSC Series Modular Cables that can be ordered in various lengths.
See Figure 26 for the E-BUS Distribution Module wiring and HSSC
cable length options.
All E-BUS Modules require a 24 VAC power connection with an ap-
propriate VA rating. The E-BUS Distribution Module can provide limited
power for E-BUS Communicating Sensors (limited to 400 mA total).
The E-BUS Distribution Module also provides terminal block connec-
tions for applications that require pulling multi-conductor wire through
conduit for applications requiring longer wire runs.
NOTE: The E-BUS Distribution Module contains no user-
serviceable parts. Contact qualifi ed technical personnel if your
module is not operating correctly.