Preferred FlexFit 110 - Firing Rate > Tuning; Draft Control > Basic; Draft Control > Tuning; Draft Control > Options

Parameter Documentation Sheet 4
FlexFit – Linkageless Control – Revision 1.0
PREFERRED
UTILITIES MFG CORPORATION
Parameter # Parameter Value Range Default
P4.1.4 Draft @ 20 mA, Xmtr Cal -25.000 to 25.000 -1.000
P4.1.5 Low Alarm SP, Draft -25.000 to 25.000 25.000
P4.1.6 Alarm Delay Sec, Draft 0 to 60 8
Draft Control > Tuning
P4.2.1 Proportional Band, Draft 0.200 to 15.000 0.600
P4.2.2 Deadband, Draft 0.010 to 0.500 0.030
P4.2.3 Filter Sec, Draft Xmtr 0.5 to 5.0 2.0
P4.2.4 Sec/90 Deg Damper Rate Limit, Draft 36 to 60 36
P4.2.5 Max Damper Deg. in Auto, Draft 20.00 to 200.00 100.00
P4.2.6 Min Damper Deg. in Auto, Draft -20.00 to 90.00 0.00
P4.2.7 Draft Feed Forward Option Disabled
P4.2.8 FeedForward Proportional Band 1.25 to 5.00 2.00
P4.2.9 Modulate Delay, Draft 0 to 60 0
P4.2.10 Cooldown Delay, Draft 0 to 900 0
P4.2.11 Draft FeedForward Fuel 1 Curve X Values See Boiler Oper-
ating Data Sheet
for curve values.
-30.00 to 200.00 -30.00
P4.2.12 Draft FeedForward Fuel 1 Curve Y Values -30.00 to 200.00 0.00
P4.2.13 Draft FeedForward Fuel 2 Curve X Values -30.00 to 200.00 -30.00
P4.2.14 Draft FeedForward Fuel 2 Curve Y Values -30.00 to 200.00 0.00
Draft Control > Options
P4.3.1 Adjustable Start Draft Option Disabled
P4.3.2 Adj Start Draft SP -5.000 to -0.100 -0.500
P4.3.3 Fuel 1 Adj Start Position 10.00 to 120.00 50.00
P4.3.4 Fuel 2 Adj Start Position 10.00 to 120.00 50.00
Button Sets
P5.1.1 Button Set 3 Disabled
P5.1.2 Button Set 4 Disabled
P5.1.3 Button Set 5 Disabled
Modbus
P6.1.1 Modbus Mode RTU
P6.1.2 Modbus Address 1 to 247 1
P6.1.3 Modbus Baudrate 38,400
P6.1.4 Modbus Parity None
P6.1.5 Modbus Comm Timeout (Sec) 2 to 255 10
Serial Number
P7.1.1 Serial Number 00000000 to FFFFFFFE
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