AERCO XPC GATEWAY Communications - Manual (Page 12)

GATEWAY COMMUNICATIONS MANUAL
12
Figure 1-2. AERCO XPC Gateway Installed in Enclosure
NOTE
If desired, the Gateway can always be wall-mounted, regardless of the
types of AERCO equipment being used. However, signaling wire
lengths must not exceed 50 feet for RS232 and 3000 feet for RS485
networks.
• Benchmark Series Boilers: XPC Gateway can be installed behind the front panel door of the
Benchmark below the Input/Output (I/O) Box.
• KC1000 Series Boilers or Heaters: XPC Gateway can be installed on the left side of the unit
above the Input/Output (I/O) Box.
• Boiler Management System (BMS/BMS II): XPC Gateway is normally mounted on a wall in
close proximity to the BMS.
• Indirect-Fired Heaters with ECS Control System: Gateway is normally wall-mounted.
• Modulex Boilers equipped with Boiler Control Modules (BCMs).
The Gateway is powered by 24 VAC, 50/60 Hz, single-phase, 20 VAC. Power and Input/Output
(I/O) signal connections are made via four grommetted cutouts (one on each side and two on
the bottom surface of the Gateway enclosure. I/O signal wiring is routed through the left-side and
bottom-left cutouts of the Gateway enclosure. Connection to the Lon module is accomplished via
the bottom-right cutout. Input power wiring (24 VAC, 50/60 Hz) and earth ground wire is routed
through the right-side cutout of the enclosure to minimize noise on the signal wiring.