Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 2: OPERATION
OMM-0145_A99
• GF-218 • 9/18/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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of
157
Main Menu
→
Advanced Setup
→
BST Cascade
→
Operating Controls
→
Temperature Control
SH Proportional Band
DHW Proportional Band
Numeric Entry
Generates a fire rate based on the error that exists between the
setpoint temperature and the actual outlet temperature. If the
difference is less than the value of these parameters, the fire
rate will be less than 100%.
SH Integral Band
DHW Integral Band
Numeric Entry
Specifies the fraction of the output, due to setpoint error, to add
or subtract from the output each minute to move towards the
setpoint.
SH Derivative Band
DHW Derivative Band
Numeric Entry
This value responds to the rate of change of the setpoint error.
This is the time that this action advances the output.
Cascade Deadband Hi
Numeric Entry
These parameters define a temperature range within which the
plant Outlet Temperature can drift above and below the
Setpoint (0 to 25°F)
Cascade Deadband Lo
Numeric Entry
Other Temp Hi Limit
Numeric Entry
The highest temperature for each Application the plant will meet
(
Application
in Cascade Configuration =
Other
, 40 to 210°F)
Main Menu
→
Advanced Setup
→
BST Cascade
→
Operating Controls
→
Valve Configuration
Output Signal Type
Toggle
Select the output signal type of the selected output:
Current
or
Voltage
.
Control Mode
Select
Select
On/Off
,
Linear Modulation
or
Delta T Modulation
.
Valve Feedback
Enable/Disable
Choose
Enabled
or
Disabled
.
Valve Feedback Status
Read Only
Displays the selected valve’s current status (
Valve Feedback
=
Enabled
).
Valve Feedback Timer
Numeric Entry
The time to detect the
Valve Feedback Status
(30 to 240 sec,
Valve Feedback
=
Enabled
).
Open Vlv Control Signal
Select
Choose the signal that opens the valve:
0mA
,
4mA
or
20mA
.
Close Vlv Control Signal
Select
Choose the signal that closes the valve:
0mA
,
4mA
or
20mA
.
Min # Valves Open
Numeric Entry
Specify the minimum number of isolation valves that must stay
open at all times, including during plant standby (1 to 16,
Unit
Mode
in Cascade Configuration =
BST Manager
).
Main Menu
→
Advanced Setup
→
BST Cascade
→
Operating Controls
→
Reserve Unit Control
Reserve Unit Control
Enable/Disable
Enables/disables the Reserve Unit Control feature.
Reserve Relay Unit Addr
Numeric Entry
The address of the unit designated as the Reserve Unit (0 to
16,
Reserve Unit Control
=
Enabled
).
Enable System Threshold
Numeric Entry
The plant fire rate that activates (closes) the Reserve Unit to fire
(20% to 100%,
Reserve Unit Control
=
Enabled
).
Disable System Threshold
Numeric Entry
The plant fire rate that deactivates (opens) Reserve Unit (20%
to 90%,
Reserve Unit Control
=
Enabled
).
Main Menu
→
Advanced Setup
→
BST Cascade
→
Operating Controls
→
Setpoint Range
SH Setpt Low Limit
Other Setpt Low Limit
Numeric Entry
The setpoint’s
lower
limit (40 to 245°F,
Application
in
Application Configuration =
SH
or
Other
).
SH Setpt Hi Limit
Other Setpt Hi Limit
Numeric Entry
The setpoint’s
upper
limit (20 to 220°F,
Application
in
Application Configuration =
SH
or
Other
).
Setpoint Limiting
Enable/Disable
Enables/disables the Setpoint Limiting feature.
Setpoint Limit Band
Numeric Entry
The number of degrees
below
Setpt Hi Limit
the unit’s outlet
temperature must fall before the unit restarts (0°F to 10°F,
Setpoint Limiting
=
Enabled
).
Setback Schedule
Enable/Disable
Enables/disables the Setback Schedule feature.
Setback Start Time
Numeric Entry
The Setback period’s
start
time (
Setback Schedule
=
Enabled
).
Setback Stop Time
Numeric Entry
The Setback period’s
end
time (
Setback Schedule
=
Enabled
).
Main Menu
→
Advanced Setup
→
BST Cascade
→
Operating Controls
→
Lead/Lag
Lead/Lag Setting
Select
Select:
Run Hours
,
Unit Size
or
Select Lead Lag
.
Hours
Numeric Entry
The number of hours after which the Lead unit is rotated (25 to
225 hours,
Lead/Lag Setting
=
Run Hours
).
Lead Unit
Numeric Entry
Specify the address of the Lead unit (0 to 16,
(
Lead/Lag
Setting
=
Select Lead Lag
).
