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Normal Controls . . . |
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make an average burner waste even more fuel |
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make a great burner perform just average |
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Great Controls . . . |
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make an average burner perform just average |
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make a great burner perform great! |
Heating boilers are typically equipped with low cost OEM
controls. They don't sense how fast load changes occur. They don't sense how
rapidly the boiler pressure or temperature is moving toward or from the set
point. They are simply proportional - meaning they adjust the firing rate in
accordance with how far the pressure or temperature is from the set point.
They work - if merely heating a building means "work." But
if "work" means efficiently utilizing the fuel purchased these low cost OEM controls
normally don't "work."
Blesi-Evans prefers to supply controls that cost more up front
and save money in operation.
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P.I.D. operating and modulating control
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lets burner remain on low fire on start-up if
that is all that is needed (prevents short cycling)
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modulates air and fuel rate by reacting to the
rate of change and the magnitude of the steam pressure or water
temperature away from the set point.
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modbus interface
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Linkageless Burner Control |
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servomotor drive
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one motor on each driven device (air
/ fuel)
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each fuel has separate settings
for highest efficiency
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digital control and communication
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electronic control
- outstanding
annunciation
- individual control for each fuel
- P.I.D. control of water or steam
- alternate set point capability
- valve proving capability eliminates vent valve
and vent piping expense
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indicating and operating unit
- 4 row, clear text display
- all burner functions shown
- Modbus interface for remote indication or
operation
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fan speed control
- huge electrical savings
- power varies as the cube of the speed
- fan speed reduced as fuel input reduced
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Oxygen trim control
- allow -weishaupt-
burners to run where their design allows (LOW excess air)
- accurate control
- significant fuel savings
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See our technical article pages
for further discussions on the merits of PID control, oxygen trim and fan speed
control.
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