AERCO BMK 1500-2000 - Manual (Page 126)

Benchmark 1500 - 2000 Boilers
CHAPTER 10. BOILER SEQUENCING TECHNOLOGY
Page 126 of 188 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0097_0D
Ph.: 800-526-0288
GF-142
10.3.6 Option 6 - Remote Setpoint with DIRECT WIRED Header Sensor AND
MODBUS Setpoint Drive
NOTE: Both Header Sensor AND the ProtoNode SSD Device must be wired. See the C-More Controller
User Manual, OMM-0032, GF-112 and ProtoNode User Manual, OMM-0080, GF-129 for more
information.
Step 1: Direct Wired Header Sensor Wiring
1. On the MASTER Unit, Connect the Header Temperature Sensor (AERCO PN 61040) to the Feed
Forward (FFWD) terminals on the P-1 Harness Via the terminal block labeled “Header Temp sensor”
in the I/O Box.
NOTES:
• The header sensor must be installed between 2 and 10 feet downstream of the LAST boiler in the
plant’s supply water header.
• Shielded pair 18 - 22 AWG cable is recommended for header sensor wiring. There is no polarity to
be observed. The ground for the shield is at the “SHLD” terminal in the I/O the Box. The sensor end
of the shield must be left free and ungrounded.
Step 2: Remote Setpoint with Network
1. Configure and Connect the SSD Device (ProtoNode) per the AERCO Manual (GF129).
Step 3: Configure ALL C-More Units
On ALL Boilers:
1. Go to the Configuration Menu and set the BST Menu item to Enabled.
2. Go to the BST Menu and set the BST Mode item to BST Slave (for now).
On Master only:
3. Go to the BST Setpoint item and enter the Failsafe Setpoint.
4. Go to the BST Setup Menu item and set to Enabled.
5. Go to the BST Setpoint Mode item and select Remote Setpoint.
6. Go to the Head Temp Source item and select FFWD Temp.
7. Go to the BST Remote Signal item and select Network.
When ALL C-More units have been configured:
8. Go to the BST Menu of the desired Master unit and set the BST Mode item to BST MASTER.
Temp Sensor PN 61040 Header Temp Sensor I/O Box