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Rotation Schedule Adjustment
Description
•
Standard rotation
schedule is based on
equalizing run time on
a 1-hour schedule
•
To vary the rotation to
a fixed schedule
based on (hours,
days)
Base Load Rate Adjustment
Description
•
Upon a call for heat
the lead boiler will fire
up to the specified
base load rate (80%).
If the temperature is
not within Error
o
threshold (5
F) of
setpoint after
Interstage delay (2
minutes) a lag boiler
will be brought online
and will also fire up to
the base load rate
specified.
•
Modulation of boilers
will only occur after all
boilers in the Lead
Lag system are firing
up to the specified
base load rate (80%).
Adjust Staging of Boilers
Description
•
Upon a call for heat
the lead boiler will
fire up to the
specified base load
rate (80%). If the
temperature is not
within Error threshold
o
(5
F) of setpoint after
Interstage delay (2
minutes) a lag boiler
will be brought online
and will also fire up
to the base load rate
specified.
•
This method will then
be repeated for the
next lag boiler, if
available.
Electrical Connection(s)
Electrical Connection(s)
Electrical Connection(s)
Programming Instructions
1)
Press
and
2)
Press [Lead Lag Master Configuration]
3)
Press [Advanced Settings >]
4)
Press the
to arrive at Algorithms
5)
Select Lead selection method: Sequence order
6)
Select Lag selection method: Sequence order
7)
Select Lead rotation time: (user defined)
Programming Instructions
1)
Press
and
2)
Press [Lead Lag Master Configuration]
3)
Press [Advanced Settings >]
4)
Press the
to arrive at Rate Allocation
5)
Select Base load common: (user defined)
Programming Instructions
1)
Press
and
2)
Press [Lead Lag Master Configuration]
3)
Press [Advanced Settings >]
4)
Press the
to arrive at Add Stage
5)
Select Error threshold
6)
Select Interstage delay
27
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