Specifications

Riverside Hydronics
®
, LLC WWW.RIVERSIDEHYDRONICS.COM 34-151 06/2014
3220 Galvez Avenue - Fort Worth, Texas 76111 - Tel [phone] Page | 6
The OnTrac can utilize an external 4-20mA input from an
Energy Management System (EMS) or any other signal
source as a means of adjusting the set point. The Remote Set
Point menu on the OnTrac must be activated and set up
correctly in order to achieve the desired adjustment. See
Programming Manual 34-152 for details.
Connect the current input to the Remote Set terminals as
described in the illustration below.
• Connect the positive wire to the + terminal.
• Connect the negative wire to the – terminal.
• Connect the shield to the G terminal or the Earth Ground lug.
The Enable/Disable contacts can be used by a building management system to remotely enable and
disable the boiler system. The Remote Proving feature is provided to check the status of non-vital
system components. This must not be used for critical
operation or safety related proving circuits, as the boilers are
capable of autonomous operation, and all such proving needs
to be connected directly to each boiler. In the event that a
component does not operate, the OnTrac will disable all boilers
and indicate an alarm. These features are enabled by removing
the jumpers shown in the illustration below. See Programming
Manual 34-152 for details.
A typical use for the Remote Proving feature is to check for
water flow. When there is a call for heat the Remote
Equipment relay will activate equipment and the OnTrac® will
wait for the Remote Proving input to be energized. If the circuit
is not energized within the time allotted the boiler will be turned off.
Connect the Enable/Disable and Remote Proving circuit as follows:
• C1 – C2 Jumped, system is enabled. Open, system is disabled with no alarm.
• C2 – C3 Jumped, system is enabled. Open, system will shut down with alarm after delay.
W
IRING AN EXTERNAL SET POINT (
4
-20mA INPUT
)
W
IRING ENABLE/DISABLE & REMOTE PROVIN
G