27
Rotation Schedule Adjustment
Description
Electrical Connection(s)
Programming Instructions
•
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)
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)
Base Load Rate Adjustment
Description
Electrical Connection(s)
Programming Instructions
•
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 (5
o
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%).
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)
Adjust Staging of Boilers
Description
Electrical Connection(s)
Programming Instructions
•
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
(5
o
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.
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
Summary of Contents for Valiant-FT II Series
Page 2: ...99 0419 Rev 00...
Page 40: ...36 PART 9 PIPING DIAGRAMS Figure 40 Single Boiler Hydronic Heating Zoned Piping...
Page 41: ...37 Figure 41 Multiple Boiler Hydronic Heating Zoned Piping...
Page 42: ...38 Figure 42 Single Boiler with DHW Tank Hydronic Heating Zoned Piping...
Page 43: ...39 PART 10 PARTS LIST...
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Page 60: ...56 PART 11 TUBING DIAGRAM...
Page 61: ...57 PART 12 WIRING DIAGRAM...
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