Bst (Boiler Sequencing Technology) Menu - Watts AERCO Benchmark OMM-0121 Operation And Maintenance Manual

Benchmark 750-3000 Boiler Operation & Maintenance Manual
SECTION 2: OPERATION

2.9 BST (Boiler Sequencing Technology) Menu

The BST menu must be enabled in order to be displayed and accessed. The BST Menu item,
located at the end of the Configuration menu (item 37 in Table 2-4), must be set to Enabled.
The BST menu contains all of the items required to configure, operate and monitor the
functionality of the BST System. There are over 50 items in this menu, and selecting any
particular item from the list, for inspection or modification, could be time consuming. As a result,
the BST menu has been segmented into FIVE logical groups based on functionality.
The five Item groups are:
1. BST Monitor Items
2. *BST SETUP MENU*
3. *OPERATE MENU*
4. *TEMP CTRL MENU*
5. *BST COMM MENU*
These displayed item groups are displayed in UPPER CASE letters, and are bounded by an
asterisk * in order to readily identify them within the item list.
The Items contained in group 1 (BST Monitor Items) are always displayed within the menu, as
these items are critical for proper system operation. Therefore, the BST Monitor Items Header
itself is not displayed.
The Items contained in groups 2-5 are not displayed unless that particular item group has been
enabled from the C-More keypad.
TABLE 2-9: BST Menu
MENU ITEM DISPLAY
1 BST Mode
2
BST Setpoint
3
Header Temp
4
BST Fire Rate
5
BST Ave Fire Rate
6 BST Outdoor Temp
7 Units Available
8 Units Ignited
9 BST Valve State
10
1 BST Comm Errors 8
11 1 BST Units 8
12 *BST SETUP MENU*
13 BST Setpoint Mode
14 BST Remote Signl
15 Head Temp Source
16 Mdbus Temp Units
OMM-0122_D • GF-206 • 5/9/2019
AVAILABLE CHOICES OR LIMIT
Minimum
Off BST Client
BST Setpt Lo Limit
Read Only – current Header temperature in °F
0
0
Read Only – current outdoor temperature in °F
0
0
0 (CLOSED)
0
0 – 8 (see * NOTE below)
Disabled
Remote
Constant Setpoint
Setpoint
0-20 mA/0-5
4-20 mA/1-5 VDC
Network
Degrees C or Degrees F
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Maximum
BST Manager
BST Setpt Hi Limit
100%
100%
8
8
1 (OPEN)
9
Enabled
Outdoor
Reset
Network
VDC
FFWD Temp
DEFAULT
Off
130°F (54.4°C)
N/A
Fire rate %
Avg Fire Rate %
N/A
Units Present
Units firing
0
0
0
Disabled
Constant Setpt
Network
FFWD Temp
Degrees C
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