NOTES:
• Polarity must be observed for the RS485 connections.
• Ground the shield at any SHLD terminal in the I/O the Board.
• When mounting the Outdoor sensor, it must be located on the North side of the building
where an average outside air temperature is expected. The sensor must be shielded from
direct sunlight as well as impingement by the elements. The outdoor sensor may be
wired up to 200 feet (61m) from the boiler.
• There is no polarity to be observed. The ground for the shield is at the power supply
ground. The sensor end of the shield must be left free and ungrounded.
OPTION 4 Step 3 –DAISY CHAIN WIRING BETWEEN BOILERS
1. Connect the boilers in a daisy chain, as shown below.
Continued on next page
To Next Page
Loading...
