Benchmark 5000-6000 Boiler Installation & Startup Manual
SECTION 6:
BOILER SEQUENCING TECHNOLOGY
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6.3 BST Implementation Instruction
6.3.1 OPTION 1 - Constant Setpoint With Direct Wired Header Sensor
OPTION 1 - Constant Setpoint With Direct Wired Header Sensor Instructions
Step 1: Direct Wired Header Sensor Wiring
1.
On the MANAGER Unit, Connect the Header Temperature Sensor (P/N
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 (0.61 and 3.1m)
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: 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 Boiler Sequencing Menu and set the BST Mode item to
BST Client
(for now).
On MANAGER only:
3. Go to the BST Setpoint item and enter the desired Setpoint.
4. Go to the BST Setup menu item and set to
Enabled
.
5. Go to the BST Setpoint Mode item and select
Constant Setpoint
.
6. Go to the Head Temp Source item and select FFWD Temp.
When ALL C-More units have been configured:
7. Go to the Boiler Sequencing Menu of the Manager unit and set the BST Mode item to
BST
MANAGER
.
TEMP SENSOR P/N
61040
HEADER TEMP SENSOR I/O BOX
